November 16, 2011 Newsletter Volume: 006

In the quest to develop flexible plastic electronics, one of the stumbling blocks has been creating transistors with enough stability for them to function in a variety of environments while still maintaining the current needed to power the devices. Online in the journal Advanced Materials, researchers from the Georgia Institute of Technology describe a new method of combining top-gate organic field-effect transistors with a bilayer gate insulator. This allows the transistor to perform with incredible stability while exhibiting

ResearchTransistor for Plastic Electronics Exhibits the Best of Both Worlds

Heated AFM Tip Draws Ferroelectric Nanostructures Directly on Plastic New Publications

Research Capabilities

PeopleNew Faculty

John Reynolds Wins 2012 ACS Award in Applied Polymer Science

Five Georgia Tech Faculty Appointed Regents’ Professors

COPE Fellowship

Awards & Honors

Faculty & Management Directory

EventsFlexTech Alliance Quarterly Workshop on Hybrid Nanocomposites and Interfaces for Printed Electronics

6th Solvay~COPE Symposium on Organic Electronics

ICSM 2012

Georgia Tech-COPE Distinguished Lecture Series

Large-area Organic and Printed Electronics Conference (LOPE-C)

Event Lists

AnnouncementsPlextronics Joins the Industrial Affiliate Program

Georgia Tech Awarded IGERT on Nanostructured Materials for Energy Storage and Conversion

Staff: Sharon Lawrence Joins COPEas Program Manager

good current performance. In addition, the transistor can be mass produced in a regular atmosphere and can be created using lower temperatures, making it compatible with the plastic devices it will power.

The research team used an existing semiconductor and changed the gate dielectric because transistor performance depends not only on the semiconductor itself, but also on the interface between the semiconductor and the gate dielectric.

“Rather than using a single dielectric material, as many have done in the past,

©2011 The Center for Organic Photonics and Electronics Georgia Institute of Technology www.cope.gatech.edu

Transistor for Plastic Electronics Exhibits the Best of Both Worldsby David Terrasso, Communications & Marketing, Georgia Tech

Contents

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Researchers display Top-Gate Organic Field-Effect Transistors with Bilayer Gate Insulators. The devices conduct current and run at a voltage comparable to amorphous silicon and can be manufactured at temperatures in line with the capabilities of plastic substrates.

Photo: Rob Felt

we developed a bilayer gate dielectric,” said Bernard Kippelen, director of the Center for Organic Photonics and Electronics and a professor in Georgia Tech’s School of Electrical and Computer Engineering.

The bilayer dielectric is made of a fluorinated polymer known as CYTOP and a high-k metal-oxide layer created by atomic layer deposition. Used alone, each substance has its benefits and its drawbacks.

CYTOP is known to form few defects at the interface of the organic semiconductor, but it also has a very low dielectric constant, which requires an increase in drive voltage. The high-k metal-oxide uses low voltage, but doesn’t have good stability because of a high number of defects on the interface.

So, Kippelen and his team wondered what would happen if they combined the two substances in a bilayer. Would the drawbacks cancel each other out?

“When we started to do the test experiments, the results were stunning. We

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New FacultyZhiqun Lin, School of Materials Science and Engineering

Charles Ume, School of Mechanical Engineering

Jennifer Clark, School of Public Policy

Charles Ume serves as Professor and Director of the Advanced Electronic Packaging and Laser Processing Laboratory at the School of Mechanical Engineering.

Dr. Ume holds numerous patents and has published over 200 reviewed journal

Jennifer Clark is an Associate Professor in the School of Public Policy where she teaches courses in urban and regional economic development theory, analysis, and practice as well as research design and methods. Since 2007 she has directed the MSPP+MCRP dual degree program in the Schools of Public Policy and City and Regional Planning.

She earned a doctorate in City and Regional Planning from Cornell University and an MS in economic development and planning from the Hubert H. Humphrey Institute of Public Affairs at the University of Minnesota. She holds a BA from Wesleyan University in Middletown, CT.

Dr. Clark publishes research on the development and diffusion of regional policies (including cooperative research centers) and their effect on economic competitiveness. Her first book, Remaking

Regional Economies: Power, Labor, and Firm Strategies in the Knowledge Economy (with Susan Christopherson) included a case study of the optics, imaging, and photonics industry in Rochester, New York. The book won the Best Book Award from the Regional Studies Association in 2009.

Dr. Clark’s research focuses on regional economic development policy and specifically the actors and processes that shape agglomeration economies (industrial districts) and territorial innovation systems. Since the mid-1990s, she has studied the spatial and organizational dynamics of the optics, imaging, and photonics industry both in the US and internationally. She is a member of SPIE and will serve on the organization’s 2012 Engineering, Science, Technology Policy (ESTeP) Committee. She writes, consults, and speaks on the subject of national and regional development policies related to innovation, intellectual property, and manufacturing.

Dr. Clark’s Homepage bit.ly/voVGDX

articles and books since 1985. As a prolific researcher he has mentored dozens of advanced degree students and has won numerous awards for his research achievements. He received his Ph.D. in 1985 from the University of South Carolina in Mechanical Engineering, and has held the rank of Professor at Georgia Tech since 1999.

Dr. Ume has a track record of spinning off a successful commercial enterprise venture from his research project in the printed circuit board and chip warpage evaluations. He is Chairman of AkroMetrix, LLC, a company he founded in 1993 and Integris, LLC, a company he founded in 2007.

Dr. Ume’s research in the areas of automation, manufacturing and mechatronics involves the modeling of system behavior, and the development of intelligent machines for nondestructive evaluation of materials and for process monitoring and control. His major research thrusts are in the areas of electronic packaging and laser ultrasonics and real-time evaluation of weld quality.

Dr. Ume’s Homepage bit.ly/tfnQfD

Zhiqun Lin is an Associate Professor in the School of Materials Science and Engineering at the Georgia Institute of Technology. He received his BS degree in Materials Chemistry from Xiamen University, Fujian, China in 1995, his Masters degree in Macromolecular Science from Fudan University, Shanghai, China in 1998, and his PhD degree in Polymer Science and Engineering from UMass, Amherst in 2002.

Dr. Lin was a postdoctoral associate at University of Illinois at Urbana-Champaign. He joined the Department of Materials Science and Engineering at Iowa State University in 2004 and was promoted to Associate Professor in 2010. He moved to the Georgia Institute of Technology in 2011.

Dr. Lin’s research interests include solar cells, conjugated polymers, semiconductor organic/inorganic nanocomposites, multifunctional nanocrystals, block copolymers, multi-arm star-like functional block copolymers, polymer blends, hierarchical structure formation and assembly, surface and interfacial properties, phase equilibrium and phase separation kinetics. He is a recipient of an NSF Career Award and a 3M Non-tenured Faculty Award.

Dr Lin’s Nanostructured Functional Materials (NanoFM) Group Homepage nanofm.mse.gatech.edu

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Atlanta, GA (July 18, 2011) — Using a technique known as thermochemical nanolithography (TCNL), researchers have developed a new way to fabricate nanometer-scale ferroelectric structures directly on flexible plastic substrates that would be unable to withstand the processing temperatures normally required to create such nanostructures.

The technique, which uses a heated atomic force microscope (AFM) tip to produce patterns, could facilitate high-density, low-cost production of complex ferroelectric structures for energy harvesting arrays, sensors and actuators in nano-electromechanical systems (NEMS) and micro-electromechanical systems (MEMS). The research was reported July 15 in the journal Advanced Materials.

“We can directly create piezoelectric materials of the shape we want, where we want them, on flexible substrates for use in energy harvesting and other applications,” said Nazanin Bassiri-Gharb, co-author of the paper and an assistant professor in the School of Mechanical Engineering at the Georgia Institute of Technology. “This is the first time that structures like these have been directly grown with a CMOS-compatible process at such a small resolution. Not only have we been able to grow these ferroelectric structures at low substrate temperatures, but we have also been able to pattern them at very small scales.”

The research was sponsored by the National Science Foundation and the U.S. Department of Energy. In addition to the Georgia Tech researchers, the work also involved scientists from the University of Illinois Urbana-Champaign and the University of Nebraska Lincoln.

The researchers have produced wires approximately 30 nanometers wide and spheres with diameters of approximately 10 nanometers using the patterning technique. Spheres with potential application as ferroelectric memory were fabricated at densities exceeding 200 gigabytes per square inch -- currently the record for this perovskite-type ferroelectric material, said Suenne Kim, the paper’s first author and a postdoctoral fellow in laboratory of Professor Elisa Riedo in Georgia Tech’s School of Physics.

Ferroelectric materials are attractive because they exhibit charge-generating piezoelectric responses an order of magnitude larger than those of materials such as aluminum nitride or zinc oxide. The polarization of the materials can be easily and rapidly changed, giving them potential application as random access memory elements.

But the materials can be difficult to fabricate, requiring temperatures greater than 600 degrees Celsius for crystallization. Chemical etching techniques produce grain sizes as large as the nanoscale features researchers would like to produce, while physical etching processes damage

Heated AFM Tip Draws Ferroelectric Nanostructures Directly on Plasticby John Toon, Research News & Publications Office

the structures and reduce their attractive properties. Until now, these challenges required that ferroelectric structures be grown on a single-crystal substrate compatible with high temperatures, then transferred to a flexible substrate for use in energy-harvesting.

The thermochemical nanolithography process, which was developed at Georgia Tech in 2007, addresses those challenges by using extremely localized heating to form structures only where the resistively-heated AFM tip contacts a precursor material. A computer controls the AFM writing, allowing the researchers to create patterns of crystallized material where desired. To create energy-harvesting structures, for example, lines corresponding to ferroelectric nanowires can be drawn along the direction in which strain would be applied.

“The heat from the AFM tip crystallizes the amorphous precursor to make the structure,” Bassiri-Gharb explained. “The patterns are formed only where the crystallization occurs.”

To begin the fabrication, the sol-gel precursor material is first applied to a substrate with a standard spin-coating method, then briefly heated to approximately 250 degrees Celsius to drive off the organic solvents. The researchers have used polyimide, glass and silicon substrates, but in principle, any material able to withstand the 250-degree heating step could be used. Structures have been made from Pb(ZrTi)O3 -- known as PZT, and PbTiO3 -- known as PTO.

“We still heat the precursor at the temperatures required to crystallize the structure, but the heating is so localized that it does not affect the substrate,” explained Riedo.The heated AFM tips were provided by William King, a professor in the Department of Mechanical Science and Engineering at the University of Illinois at Urbana-Champaign.

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Image shows the topography (by atomic force microscopy) of a fer-roelectric PTO line array crystallized on a 360-nanometer thick pre-cursor film on polyimide. The scale bar corresponds to one micron. (Courtesy Suenne Kim)

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As a next step, the researchers plan to use arrays of AFM tips to produce larger patterned areas, and improve the heated AFM tips to operate for longer periods of time. The researchers also hope to understand the basic science behind ferroelectric materials, including properties at the nanoscale.

“We need to look at the growth thermodynamics of these ferroelectric materials,” said Bassiri-Gharb. “We also need to see how the properties change when you move from the bulk to the micron scale and then to the nanometer scale. We need to understand what really happens to the extrinsic and intrinsic responses of the materials at these small scales.”

Ultimately, arrays of AFM tips under computer control could produce complete devices, providing an alternative to current fabrication techniques.

“Thermochemical nanolithography is a very powerful nanofabrication technique that, through heating, is like a nanoscale pen that can create nanostructures useful in a variety of applications, including protein arrays, DNA arrays, and graphene-like nanowires,” Riedo explained. “We are really addressing the problem caused by the existing limitations of photolithography at these size scales. We can envision creating a full device based on the same fabrication technique without the requirements of costly clean rooms and vacuum-based equipment. We are moving toward a process in which multiple steps are done using the same tool to pattern at the small scale.”

In addition to those already mentioned, the research team included Yaser Bastani from the G.W. Woodruff School of Mechanical Engineering at Georgia Tech, Seth Marder and Kenneth Sandhage, both from Georgia Tech’s School of Chemistry and Biochemistry and School of Materials Science and Engineering, and Alexei Gruverman and Haidong Lu from the Department of Physics and Astronomy at the University of Nebraska-Lincoln.

Scanning electron microscope image shows a large PZT line array crystallized on a 240-nanometer thick precursor film on a platinized silicon wafer. (Courtesy of Yaser Bastani)

Plextronics Joins the Industrial Affiliates Program by Jason Martin, COPE

Atlanta (August 22, 2011) —Plextronics, an international technology company that specializes in printable organic electronics, has joined the Center for Organic Photonics at Georgia Tech as a member of the Center’s Industrial Affiliates Program.

Headquartered in Pittsburgh, PA, the company’s focus is on organic light emitting diodes (OLED) and organic solar technology, specifically the conductive inks and process technologies that enable those and other similar applications.

As a member of the program, Plextronics will connect to the faculty expertise and highly trained students and graduates of the Center as well as an international network of partners in the field of organic photonics and electronics. This includes insider information on the latest research and discoveries and invitations to exclusive events.

When asked about joining the program, Andy Hannah, President and Chief Executive Officer of Plextronics stated, “We look forward to sustaining collaborations with other industry leaders that are part of COPE’s Industrial Affiliates Program to bring forth the best in research and development of organic electronics.”

Bernard Kippelen, Director of the Center stated, “COPE is extremely pleased to count Plextronics among its Industrial Affiliates. Having a company like Plextronics with strong recognition in the emerging printed electronics industry join our Center speaks for the high quality of the science and engineering carried-out by our faculty and researchers.”

About the Industrial Affiliates Program

The Industrial Affiliates Program at the Georgia Tech–COPE is open to corporations of any size that have an interest in the field of organic photonics and electronics. The program provides corporations with an opportunity to engage some of the brightest talent in the field, gain access to exclusive information on the state-of-the-art research within COPE’s network, and receive timely news about the latest innovations at COPE. www.cope.gatech.edu/IAP

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Atlanta (August 31, 2011) —Georgia Tech has received a five-year Integrative Graduate Education and Research Training Program (IGERT) award from the National Science Foundation. The award supports the further development

of a multidisciplinary graduate training program of education and research in Nanostructured Materials for Energy Storage and Conversion (NESAC).

IGERT is an NSF-wide program intended to meet the challenges of educating U.S. Ph.D. scientists and engineers with the interdisciplinary background, deep knowledge in a chosen discipline, and the technical, professional, and personal skills needed for the career demands of the future. The program is intended to catalyze a cultural change in graduate education by establishing innovative new models for graduate education and training in a fertile environment for collaborative research that transcends traditional disciplinary boundaries.

The purpose of the program in Nanostructured Materials for Energy Storage and Conversion is to provide doctoral students with enhanced multidisciplinary training in the skills required for conducting research in energy science, technology and policy.

According to Professor Elsa Reichmanis who serves as the Principal Investigator on the project, “As we look to the development of any new energy-based technology, materials play a central role; they provide a focal point allowing those interested in a multitude of disciplines, covering almost all the science and engineering schools, to work together to design and develop the technologies that will meet our future energy needs. Our present focus relates to the design and development of nanostructured materials coupled with necessary policy-related research.”

The program training aims to address all the stages of needed technological developments, starting from materials, to the fabrication of devices, to the integration of devices into systems, and how energy policy and economics may impact each of these stages, thus affecting the advancement and adoption of new energy solutions.

A required component of the program is a set of four courses; first is an introductory seminar course, followed by a set of courses designed to provide participants with cross-disciplinary training in policy and technology. Next will be a set of studio courses designed to investigate and solve

problems in the area of energy and energy policy by teams of students. International collaborations, industrial and national laboratory internships, and personal development seminars will help to create ethical, responsible and capable leaders of the future.

Georgia Tech Awarded IGERT on Nanostructured Materials for Energy Storage and Conversion

In addition to Reichmanis, other faculty members affiliated with COPE that are participating in the project include: Michael Filler and Martha Grover from the School of Chemical and Biomolecular Engineering; Jean-Luc Bredas, Seth Marder, and Joseph Perry from the School of Chemistry and Biochemistry; Bernard Kippelen from the School of Electrical and Computer Engineering; and Baratunde Cola and Sam Graham (co-PI) from the School of Mechanical Engineering.

Other Georgia Tech schools represented in the program are the School of Industrial and Systems Engineering, School of History, Technology and Society, School of Materials Science and Engineering, School of Physics, and School of Public Policy.

Professors and students from neighboring HBCUs will also be involved in the IGERT’s research and educational activities.

“The teaming of researchers interested in policy with those grounded in technology provides Georgia Tech with a unique program that will effectively increase our footprint in energy-related research and education,” said Reichmanis. “Through the IGERT we will provide the necessary educational platform for our future leaders to be effective in our increasingly complex society.”

Overall, the program is expected to advance knowledge of the economics of energy choices and policy development with sophisticated technical awareness of alternative technologies.

More: www.nesac.gatech.edu

Professor Elsa Reichmanis (above) of the School of Chemical and Biomolecular Engineering is the Principal Investigator on a $3M 5-year long NSF IGERT Proposal titled, “Nanostructured Materials for Energy Storage and Conversion (NESAC)”. The program provides students with enhanced multidisciplinary training in the skills required for conducting research in energy science, technology and policy. Photo: Rob Felt

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ICSM 2012The International Conference on the Science and Technology of Synthetic Metals, ICSM-2012, will take place in Atlanta from July 8 - 13, 2012. ICSM, which usually attracts over 1,000 participants from all corners of the world, is the longest-running conference series in the field of conducting and semiconducting organic materials. It started in the mid-1970’s with the advent of highly electrically conducting molecular crystals and conjugated polymers (hence, the original reference to synthetic metals!). Over the years, it has become a premier venue for discussion of the latest developments in the areas of organic electronics and photonics, from synthesis to characterization, computational modeling, device fabrication, and real-world applications.

The co-chairs for ICSM 2012, Jean-Luc Brédas and Seth Marder, are pleased that the outside recognition of COPE has helped them bring ICSM back to the US for the first time since 1996 (the most recent editions took place in Montpellier, France, 1998; Bad Gastein, Austria, 2000; Shanghai, China, 2002; Wollongong, Australia, 2004; Dublin, Ireland, 2006; Porto de Galinhas, Brazil, 2008; and in Kyoto, Japan, 2010).

More: www.icsm2012.com

6th SOLVAY~COPE Symposium on Organic ElectronicsThe 6th Solvay~COPE Symposium on Organic Electronics is slated to take place on May 10-11, 2012 in Pittsburgh, PA. For the first time this annual event will be hosted by a corporation—Plextronics, Inc. of Pittsburgh. Previous events have been held in Atlanta (hosted by Georgia Tech), Leuven, Belgium (host by IMEC), and Beijing, China (hosted by Chinese Academy of Sciences).

The event is by invitation only and will gather around 150 people from both the academic world and companies active in the field of OLEDs, Printed transistors and OPV.

The academic speakers will include: Rick McCullough (Carnegie-Mellon); Tobin Marks (Northwestern); Zhenan Bao (Stanford); Ana Arias (Berkeley); and Natalie Stingelin-Stutzman (Imperial College London).

Additionally, John Reynolds and David Bucknall will be speaking as representatives of Georgia Tech-COPE.

Industry will be represented by speakers from companies that include: Eight19; Thinfilm; Polyera; Universal Display Corporation; Cambrios; Moser Baer; Plextronics; and Solvay.

Please remember to mark your calendars for May 10-11, 2012 and make sure to attend this 6th Solvay~COPE Symposium. While free, registration is required and will be open closer to the date of the event.

Follow the COPE twitter feed for updates. @gtcope

More: www.cope.gatech.edu/symposium

Atlanta (September 14, 2011) — The FlexTech Alliance, an organization exclusively devoted to fostering the growth, profitability and success of the electronic display and flexible, printed electronics supply chain, conducted a quarterly workshop at Georgia Tech.

Sponsored by COPE, the workshop discussed topics such as energy storage, tuning electrical properties of transparent conductors, and hybrid materials for encapsulation and packaging. The workshop included featured speakers that focused on the challenges of organic / inorganic interfaces.

The FlexTech Alliance regularly conducts workshops and webinars that cover the latest topics in flexible and printed electronics. Visit www.flextech.org/fe-flextech-events.aspx to view past and upcoming FlexTech events.

FlexTech Alliance Quarterly Workshop on Hybrid Nanocomposites and Interfaces for Printed Electronics

In addition, The FlexTech Alliance 2012 Flexible Electron-ics and Displays Conference and Exhibition will be taking place February 6-9, 2012 at the Arizona Grand Resort, Phoe-nix, AZ.

This event attracts over 450 registrants from more than 200 companies, universities, R&D labs, and government agencies. The conference will address global technical and business issues, and advancements impacting the flexible electronics and displays value and supply chains. Attendees are involved in technical, marketing, product development, manufactur-ing, executive and business planning functions.

Registration and More: www.flexconference.org

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John Reynolds Wins 2012 ACS Award in Applied Polymer Science

Congratulations to Dr. John Reynolds who received the 2012 ACS Award in Applied Polymer Science sponsored by Eastman Chemical Company. He will be honored at the Awards Ceremony on March 27, 2012, at the 243rd ACS National Meeting in San Diego, CA.

Dr. Reynolds will be joining

the School of Chemistry and Biochemistry and the Center for Organic Photonics and Electronics in January of 2012.

Dr. Reynolds comes from the University of Florida, where he has built an internationally recognized program in the synthesis of materials for organic electronics. He will be affiliated with the School of Chemistry and Biochemistry and the School and Materials Science and Engineering.

ACS 2012 National Award Winners http://bit.ly/nIZVHw

Five Georgia Tech Faculty Appointed Regents’ Professors by Liz Klipp, Georgia Tech Communications & Marketing

Atlanta (August 10, 2011) — The University System of Geor-gia Board of Regents today appointed three Georgia Tech faculty members as Regents’ Professors and two as Regents’ Researchers.

The three new Regents’ Professors at Georgia Tech are Mark Prausnitz, professor and director of the Center for Drug Design, Development and Delivery in the School of Chemical & Biomolecular Engineering; Seth Marder, professor in the School of Chemistry and Biochemistry and founding direc-tor of the Center for Organic Photonics and Electronics in the colleges of Engineering and Sciences; and Gary Schuster, Vasser Woolley Professor in the School of Chemistry and Biochemistry.

Two Regents’ Researchers appointed are Gisele Bennett, pro-fessor and director of the Electro-Optical Systems Laboratory in the Georgia Tech Research Institute; and Suzanne Eskin, principal research scientist in the Wallace H. Coulter Depart-ment of Biomedical Engineering at Georgia Tech and Emory University.

“We are immensely proud of our new Georgia Tech Regents’ Professors and Researchers,” said G. P. “Bud” Peterson, Geor-gia Tech’s president.  “They are conducting breakthrough research that is gaining national attention.  The fact that we have five Georgia Tech faculty members receiving this honor from the Board of Regents in one year is a reflection of the caliber of scholars we have at Tech.”

A Regents' Professorship and Regents’ Researcher title repre-sents the highest academic status bestowed by the Univer-sity System of Georgia. It is meant to recognize a substantial, significant and ongoing record of scholarly achievement that has earned high national esteem over a sustained period. 

Prausnitz has received international acclaim for his research on biophysical methods of drug delivery, which employ mi-croneedles, ultrasound, lasers, electric fields, heat, convective forces and other physical means to control the transport of drugs, proteins, genes and vaccines into and within the body.

Marder is focused on the development of materials with nonlinear optical properties, surface modification method-ologies, and organic molecules and polymers for photonic, display, and electronic applications. Marder is the Georgia Power Chair of Energy Efficiency and also a recipient of the Arthur C. Cope Scholar Award.

Schuster is a nationally known scholar and researcher with an extensive list of published articles on topics ranging from biochemistry through physical chemistry, as well as a number of scientific discoveries with commercial applications. He also held top leadership roles at Georgia Tech such as interim president, provost and dean of the College of Sciences.

Bennett has been praised for the programs she has built around automatic identification technologies using radio frequency identification and container security. Her research activities include the study of optical coherence imaging systems.

Eskin has contributed to research on vascular biology, cardio-vascular tissue engineering and gene expression of vascular cells. She studies the comparative effects of mechanical forces accompanying blood flow and pressure on the blood vessel wall.

The titles are awarded by the Board of Regents, which gov-erns the University System of Georgia, upon the unanimous recommendation of the president, the chief academic officer, the appropriate academic dean and three other faculty mem-bers named by the president, and upon the approval of the chancellor and the committee on academic affairs.

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This year’s reception took place in conjunction with presentations by faculty members who received Seed Research Grants from COPE in 2011.

• Martha Grover, “Automated Dynamic Coarse Graining in Polymer Molecular Dynamics”

• Baratunde Cola (presented by Virendra Singh), “Enhanced Thermal Transport in Polythiophene Nanostructures”

• Oliver Brand, “Assessment of Polymer Sorption Kinetics and Polymer Permeability Using Micromachined In-Plane Resonators”

2012 COPE Fellowship Applications will now be accepted for the 2012 COPE Fellowship. Students funded by this fellowship will receive a $5,000 award to his/her existing stipend.

COPE Fellowship

Students will have access to our network, meet peers from other departments and are encouraged to participate in various COPE activities such as the Distinguished Lecture Series and the COPE Open House.

The Fellowship is open to graduate students with a Bachelor’s degree by the time the award begins. Applicants should have a superior academic record as demonstrated by a GPA of 3.5 or higher. Only students who have been at Georgia Tech for at least two years, and engaged in research for at least one year, are eligible to apply.

You must be a COPE student member, however your Fellowship Application will be considered as an application for COPE membership.

Application Deadline: December 15More: http://bit.ly/vc12mLApply Online: http://bit.ly/uyi2XI

The 2011 COPE Fellows (from left) Xuxia Yao, Subodh Jagtap, Keith Carroll, and Sergio Paniagua.

Faculty Awards Jean-Luc Brédas• ElectedMemberoftheInternationalAcademyof

QuantumMolecularScience,July2011

Baratunde Cola• AwardedanNSFCareerAward

Martha Grover• AwardedtheComputingandSystems

Technology(CAST)OutstandingYoungResearcherAwardbytheAmericanInstituteofChemicalEngineers

Rigoberto Hernandez • AwardedtheVasserWooleyFacultyFellowship

Seth Marder• AppointedRegents’Professor

Elsa Reichmanis• AwardedtheDistinguishedServiceAwardbythe

ACSDivisionofPolymericMaterials:ScienceandEngineering

Gary Schuster• AppointedRegents’Professor

David Sherril• Elected as a Fellow of the American Chemical

Society

Vladimir Tsukruk• Elected as a Fellow of the Materials Research

Society

Special AnnouncementsChad Risko • ReceivedoneoftheBestPosterAwardsatthe

InternationalCenterforMaterialsResearchWork-shopon“EmergingMaterialsforThinFilmSolarCells”,August2011,SantaBarbara,California

The COPE Fellowship is awarded annually to 4 graduate students pursuing research in the field of organic photonics and electronics. Students present their research at the end of the year.

The 2011 COPE Fellowship Reception took place on November 15 at 1pm in Room 3201A of the Molecular Science and Engineering building where the recipients presented the results of their research.

• Keith Carroll (advisor Jennifer Curtis), “Controlled Chemical Patterns with ThermoChemical NanoLithography (TCNL)”

• Subodh Jagtap (advisor David Collard), “Design and Synthesis of Pi-Stacked Conjugated Oligomers and Polymers”

• Sergio Paniagua (advisor Seth Marder), “Surface Engineering of Oxide Particles and Flat Surfaces by Phosphonic Acids for Organic Electronic Applications”

• Xuxia Yao (advisor Mohan Srinivasarao), “Conducting Chromonics”

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Atlanta, GA (October 29, 2011)— The second year of the Georgia Tech-COPE Distinguished Lecture Series kicked-off during the month of October with two lectures; Dr. Mark Thompson, Professor of Chemistry at the University of Southern California and Dr. Ana Arias, an Acting Associate Professor at the Electrical Engineering and Computer Science Department at the University of California at Berkeley.

The Georgia Tech-COPE Distinguished Lecture Series

In his lecture titled, “Exciton Management in Organic Solar Cells”, Dr. Thompson discussed his research group’s work with porphyrinic materials and their photophysical properties, along with their use in organic photovoltaics.

In her lecture titled, “Building Electronics from Solution: Materials, Device Integration and Application Development”, Dr. Arias overviewed different applications on printed electronics and discussed the development of a flexible integrated blast dosimeter to illustrate and demonstrate the challenges and advantages of using solution-processed electronic materials for flexible and disposable applications.

Video recordings of both lectures are available for viewing on the COPE website or by visiting our Youtube page at youtube.com/gtcope.

The next lecture in the series will take place on Friday, February 17, 2012 at 4pm in MoSE G-011 where the invited speaker is John Rogers from Department of Materials Science and Engineering at the University of Illinois at Urbana-Champaign. Dr. Rogers is the Lee J. Flory-Founder Chair in Engineering and also holds joint appointments in the Departments of Chemistry, Bioengineering, Mechanical Science and Engineering, and Electrical and Computer Engineering. He currently serves as the Director of a Nanoscale Science and Engineering Center on nanomanufacturing, funded by the National Science Foundation.

Dr. Rogers is a winner of the 2009 MacArthur “genius award” and awarded the prestigious 2011 Lemelson-MIT Prize for outstanding inventor. A recent Business Week article titled, “John Rogers’s Bendable Microprocessors” highlights some of Rogers’ recent work in flexible electronics.

On Friday, March 30, 2012 the lecture series will welcome Takeo Someya from the University of Tokyo’s Department of Electric and Electronic Engineering. Professor Someya is one of the world’s leading experts in large-area organic electronics and circuits. Professor Someya’s “large-area sensor array” electronic thin film was featured in Time Magazine as one of its “Best Inventions of 2005”.

More: www.cope.gatech.edu/news/lecture

Sharon Lawrence Joins COPE as Program Manager Sharon Lawrence has joined COPE as Program Manager. Sharon has a wealth of experience and has worked in academia, federal government, private industry and corporate industry. In her previous position at Georgia Tech, she provided administrative management to nine professors and their laboratories.

Sharon earned her Bachelor of Arts degree in Business Education with a minor in Accounting. She is currently working on her Masters of Art degree in Counseling. Sharon is actively involved in the Toastmasters International organization. She served as the 2010-2011 president of the Georgia Tech Techmasters Club. While serving as president, Sharon assisted the club in reaching its goal of being awarded President’s Distinguished Club. Sharon is currently serving as an Area Governor for the Toastmasters International District 14.

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LOPE-C – Large-area Organic and Printed Electronics Convention – is the official annual conference and exhibition of the OE-A (Organic and Printed Electronics Association).

In its third year on the international stage, LOPE-C 2011 has successfully positioned itself as the central market place of a newly emerging basic industry, serving as the meeting platform of its industrial, scientific, energeering, investor and end-user communities. More than 1,150 fully registered attendees from 37 countries, gathered for 180 presentations in the 3-day conference featuring multi-track keynote, business, main technical scientific and poster sessions. Exceeding last years show floor area to accommodate 91 exhibitors, LOPE-C 2011 exceeded all expectations, introducing a host of new products and demonstrating advanced manufacturing equipment suited for mass production. In the review of international observers, LOPE-C figures as the gateway to a new era: of organic and printed electronics. The event is hosted by the OE-A, and organized by Messe München International.

LOPE-C 2012 will cover the latest commercial and technological achievements in organic, inorganic and printed devices, systems and materials. LOPE-C represents the entire industrial value chain – from academic research to R&D to production to commercialization to end-user cultivation.

In addition to the high-level business and technical conference with noted speakers from academia and industry, plus keynotes sessions and pre-conference seminars, LOPE-C 2012 will feature an industry exhibition providing a comprehensive overview to showcase the rapidly emerging products, services and global manufacturing capacities in organic and printed electronics.

When: June 19-21, 2012Where: ICM–International Congress Center, Munich, Germany

Registration and Info: www.lope-c.com

were expecting good stability, but not to the point of having no degradation in mobility for more than a year,” said Kippelen.

The team performed a battery of tests to see just how stable the bilayer was. They cycled the transistors 20,000 times. There was no degradation. They tested it under a continuous bias stress where they ran the highest possible current through it. There was no degradation. They even stuck it in a plasma chamber for five minutes. There was still no degradation.

The only time they saw any degradation was when they dropped it into acetone for an hour. There was some degradation, but the transistor was still operational.

No one was more surprised than Kippelen.

“I had always questioned the concept of having air-stable field-effect transistors, because I thought you would always have to combine the transistors with some barrier coating to protect them from oxygen and moisture. We’ve proven ourselves wrong through this work,” said Kippelen.

“By having the bilayer gate insulator we have two different degradation mechanisms that happen at the same time, but the effects are such that they compensate for one another,” explains Kippelen. “So if you use one it leads to a decrease of the current, if you use the other it leads to a shift of the thereshold voltage and over time to an increase of the current. But if you combine them, their effects cancel out.”

“This is an elegant way of solving the problem. So, rather than trying to remove each effect, we took two processes that complement one another and as a result you have a transistor that’s rock stable.”

The transistor conducts current and runs at a voltage comparable to amorphous silicon, the current industry standard used on glass substrates, but can be manufactured at temperatures below 150 °C, in line with the capabilities of plastic substrates. It can also be created in a regular atmosphere, making it easier to fabricate than other transistors.

Applications for these transistors include smart bandages, RFID tags, plastic solar cells, light emitters for smart cards - virtually any application where stable power and a flexible surface are needed.

In this paper the tests were performed on glass substrates. Next, the team plans on demonstrating the transistors on flexible plastic substrates. Then they will test the ability to manufacture the bilayer transistors with ink jet printing technologies.

Kippelen’s research team was comprised of Do Kyung Hwang, Canek Fuentes-Hernandez, Jungbae Kim, William J. Potscavage Jr. and Sung-Jin Kim.

The research was supported by Solvay, the Office of Naval Research and the National Science Foundation.

(Transistor for Plastic Electronics Exhibits the Best of Both Worlds, continued from page 1) Large-area, Organic

& Printed Electronics Conference

New PublicationsFlexible and stable solution-processed organic field-effect transistors. Hwang, D. K.; Fuentes-Hernandez, C.; Kim, J. B.; Potscavage, Jr., W. J. and Kippelen, B. ORGANIC ELECTRONICS 12, 1108-1113, (2011).

Highly stable, solution-processed, small molecule-polymer blend organic field-effect transistors (OFETs) with a top-gate geometry were demonstrated on a flexible polyethersulfone (PES) substrate. The top-gate dielectric was a bi-layer comprised of CYTOP and a high-k Al2O3 layer grown by atomic layer deposition (ALD). A solution processed 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene) and poly(triarylamine) (PTAA) blend was used as the organic semiconductor. TIPS-pentacene and PTAA blend OFETs with the CYTOP/Al2O3 bi-layer top gate dielectric showed an averaged saturation mobility value of 0.24 ± 0.08 cm2/Vs at operation voltages below 8 V. A constant direct-current bias stress test was carried out to examine their operational stability for 2 h. Under bias stress, neither significant change in mobility nor shift in the threshold voltage has been observed in these OFETs. To evaluate the real potential of these OFETs towards the development of circuit components commonly used in electronic applications, a resistive-load inverter was implemented by connecting an OFET to an external load resistor. Excellent stability of the transistor led to electrically stable inverters with negligible variations of the voltage transfer characteristics before and after bias stress. After the operational stability test, these OFETs were exposed to air and then were subjected to bending experiments. Even after exposure to air for 4 months and bending for 30 min, no significant changes in performance were observed in either a single transistor device or in a resistive-load inverter.

Origin of the Surprising Enhancement of Electrostatic Energies by Electron-Donating Substituents in Substituted Sandwich Benzene Dimers. Hohenstein, Edward G.; Duan, Jiana and Sherrill, C. David. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 133, 13244-13247, (2011).

Quadratically convergent algorithm for orbital optimization in the orbital-optimized coupled-cluster doubles method and in orbital-optimized second-order Moller-Plesset perturbation theory. Bozkaya, Ugur; Turney, Justin M.; Yamaguchi, Yukio; Schaefer, III, Henry F. and Sherrill, C. David. JOURNAL OF CHEMICAL PHYSICS 135, (2011).

Theoretical study of substitution effects on molecular reorganization energy in organic semiconductors. Geng, Hua; Niu, Yingli; Peng, Qian; Shuai, Zhigang; Coropceanu, Veaceslav and Bredas, Jean-Luc. JOURNAL OF CHEMICAL PHYSICS 135, (2011).

Design of Efficient Ambipolar Host Materials for Organic Blue Electrophosphorescence: Theoretical Characterization of Hosts Based on Carbazole Derivatives. Kim, Dongwook; Coropceanu, Veaceslav and Bredas, Jean-Luc. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 133, 17895-17900, (2011).

Passive all-optical polarization switch, binary logic gates, and digital processor. Zaghloul, Y. A.; Zaghloul, A. R. M.; Adibi, A. OPTICS EXPRESS 19, 20332-20346, (2011).

Direct Fabrication of Arbitrary-Shaped Ferroelectric Nanostructures on Plastic, Glass, and Silicon Substrates. Kim, Suenne; Bastani, Yaser; Lu, Haidong; King, William P.; Marder, Seth; Sandhage, Kenneth H.; Gruverman, Alexei; Riedo, Elisa and Bassiri-Gharb, Nazanin. ADVANCED MATERIALS 23, 3786+, (2011).

11

Printed Electronics USA www.bit.ly/tLtHR6

2012 Flex Flexible Electronics and Displays Conference and Exhibition www.flexconference.org

13th Annual Science & Engineering Technology Conference and DoD / Tech Exposition bit.ly/u8gZQb

6th Solvay~COPE Symposium on Organic Electronics bit.ly/sAno8l

LOPE-C 2012 Large-area, Organic & Printed Electronics Convention www.lope-c.com

Nov 30 - Dec 1Santa Clara, CA

February 6-9Phoenix, AZ

April 17-19 Charleston, SC

May 11-12Pittsburgh, PA

June 28-30Messe Munich,

Germany

Industry Events where COPE is participating

On Campus Events

Georgia Tech-COPE Distinguished Lecture Series: John Rogers

Georgia Tech-COPE Distinguished Lecture Series: Takao Someya

Georgia Tech-COPE Distinguished Lecture Series: Yasuhiro Koike

February 17MoSE Building

March 30MoSE Building

April 1MoSE Building

organized by COPE

Conferences & Meetings

2011 MRS Fall Meeting & Exhibitwww.mrs.org/fall2011

International Year of Chemistry (IYC2011) Closing Ceremonywww.chemistry2011.org/participate/events

International Symposium on Electronic/Optic Functional Moleculeshyxy.ecust.edu.cn/iseofm/

American Chemical Society Spring 2012 National Meeting www.acs.org

International Workshop on “Electronic processes at Interfaces to Organic Semiconductors: from Modelling to Devices” www.materianova.be/minotor

International Conference on Science and Technology of Synthetic Metals 2012 (ICSM 2012) www.icsm2012.com

Nov 28 - Dec 2Boston, MA

December 1Brussels, Belgium

March 11-13Shanghai, China

March 25-29San Diego, CA

May 29-31Mons, Belgium

July 8-13Atlanta, GA

where COPE is participating

12

High surface area, micro/mesoporous carbon particles with selectable 3-D biogenic morphologies for tailored catalysis, filtration, or adsorption. Bao, Zhihao; Song, Min-Kyu; Davis, Stanley C.; Cai, Ye; Liu, Meilin and Sandhage, Kenneth H. ENERGY & ENVIRONMENTAL SCIENCE 4, 3980-3984, (2011).

Hexaazatriphenylene (HAT) versus tri-HAT: The Bigger the Better?. Juarez, Rafael; Moreno Oliva, Maria; Ramos, Mar; Segura, Jose L.; Aleman, Carlos; Rodriguez-Ropero, Francisco; Curco, David; Montilla, Francisco; Coropceanu, Veaceslav; Bredas, Jean Luc; Qi, Yabing; Kahn, Antoine; Ruiz Delgado, M. Carmen; Casado, Juan and Lopez Navarrete, Juan T. CHEMISTRY-A EUROPEAN JOURNAL 17, 10312-10322, (2011).

Photo-induced charge transfer and nonlinear absorption in dyads composed of a two-photon-absorbing donor and a perylene diimide acceptor. Huang, Chun; Sartin, Matthew M.; Siegel, Nisan; Cozzuol, Matteo; Zhang, Yadong; Hales, Joel M.; Barlow, Stephen; Perry, Joseph W. and Marder, Seth R. JOURNAL OF MATERIALS CHEMISTRY 21, 16119-16128, (2011).

Structures of protonated benzene dimer and intermolecular interaction decomposition via symmetry-adapted perturbation theory. Jaeger, Heather M.; Schaefer, Henry F.; Hohenstein, Edward G. and Sherrill, C. David. COMPUTATIONAL AND THEORETICAL CHEMISTRY 973, 47-52, (2011).

Assembly and Characterization of Well-Defined High-Molecular-Weight Poly(p-phenylene) Polymer Brushes. Alonzo, Jose; Chen, Jihua; Messman, Jamie; Yu, Xiang; Hong, Kunlun; Deng, Suxiang; Swader, Onome; Dadmun, Mark; Ankner, John F.; Britt, Philip; Mays, Jimmy W.; Malagoli, Massimo; Sumpter, Bobby G.; Bredas, Jean-Luc and Kilbey, II, S. Michael. CHEMISTRY OF MATERIALS 23, 4367-4374, (2011).

Multiscale Modeling of Branch Length in Butyl Acrylate Solution Polymerization: Molecular Versus Continuum Kinetics. Rawlston, Jonathan A.; Schork, Francis Joseph and Grover, Martha A. MACROMOLECULAR THEORY AND SIMULATIONS 20, 645-659, (2011).

Homogeneous and homeotropic alignment of bent-core uniaxial and biaxial nematic liquid crystals. Yoon, HyungGuen; Kang, Shin-Woong; Lehmann, Matthias; Park, Jung Ok; Srinivasarao, Mohan and Kumar, Satyendra. SOFT MATTER 7, 8770-8775, (2011).

Direct Fabrication of Arbitrary-Shaped Ferroelectric Nanostructures on Plastic, Glass, and Silicon Substrates. Kim, Suenne; Bastani, Yaser; Lu, Haidong; King, William P.; Marder, Seth; Sandhage, Kenneth H.; Gruverman, Alexei; Riedo, Elisa and Bassiri-Gharb, Nazanin. ADVANCED MATERIALS 23, 3786+, (2011).

Truly Nonionic Polymer Shells for the Encapsulation of Living Cells. Carter, Jessica L.; Drachuk, Irina; Harbaugh, Svetlana; Kelley-Loughnane, Nancy; Stone, Morley and Tsukruk, Vladimir V. MACROMOLECULAR BIOSCIENCE 11, 1244-1253, (2011).

Accurate Interaction Energies for Problematic Dispersion-Bound Complexes: Homogeneous Dimers of NCCN, P(2), and PCCP. Hohenstein, Edward G.; Jaeger, Heather M.; Carrell, Emily J.; Tschumper, Gregory S. and Sherrill, C. David. JOURNAL OF CHEMICAL THEORY AND COMPUTATION 7, 2842-2851, (2011).

Roles of thermally-induced vertical phase segregation and crystallization on the photovoltaic performance of bulk heterojunction inverted polymer solar cells. Cheun, Hyeunseok; Berrigan, John D.; Zhou, Yinhua; Fenoll, Mathieu; Shim, Jaewon; Fuentes-Hernandez, Canek; Sandhage, Kenneth H. and Kippelen, Bernard. ENERGY & ENVIRONMENTAL SCIENCE 4, 3456-3460, (2011).

Polymers with Carbazole-Oxadiazole Side Chains as Ambipolar Hosts for Phosphorescent Light-Emitting Diodes. Zhang, Yadong; Zuniga, Carlos; Kim, Sung-Jin; Cai, Dengke; Barlow, Stephen; Salman, Seyhan; Coropceanu, Veaceslav; Bredas, Jean-Luc; Kippelen, Bernard and Marder, Seth. CHEMISTRY OF MATERIALS 23, 4002-4015, (2011).

Fullerene-Carbene Lewis Acid-Base Adducts. Li, Huaping; Risko, Chad; Seo, Jung Hwa; Campbell, Casey; Wu, Guang; Bredas, Jean-Luc and Bazan, Guillermo C. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 133, 12410-12413, (2011).

Direct Probing of Micromechanical Properties of Hydrogen-Bonded Layer-by-Layer Microcapsule Shells with Different Chemical Compositions. Lisunova, Milana O.; Drachuk, Irina; Shchepelina, Olga A.; Anderson, Kyle D. and Tsukruk, Vladimir V. LANGMUIR 27, 11157-11165, (2011).

Gold Nanoparticles Grown on Star-Shaped Block Copolymer Monolayers. Suntivich, Rattanon; Choi, Ikjun; Gupta, Maneesh K.; Tsitsilianis, Constantinos and Tsukruk, Vladimir V. LANGMUIR 27, 10730-10738, (2011).

Comment on Raman Scattering Study of Phase Biaxiality in a Thermotropic Bent-Core Nematic Liquid Crystal Reply. Park, Min Sang; Yoon, Beom-Jin; Park, Jung Ok; Kumar, Satyendra and Srinivasarao, Mohan. PHYSICAL REVIEW LETTERS 107, (2011).

Bias-stress effects in organic field-effect transistors based on self-assembled monolayer nanodielectrics. Colleaux, Florian; Ball, James M.; Woebkenberg, Paul H.; Hotchkiss, Peter J.; Marder, Seth R. and Anthopoulos, Thomas D. PHYSICAL CHEMISTRY CHEMICAL PHYSICS 13, 14387-14393, (2011).

Diffusional effects on the reversible excited-state proton transfer. From experiments to Brownian dynamics simulations. Popov, Alexander V.; Gould, Elizabeth-Ann; Salvitti, Michael A.; Hernandez, Rigoberto and Solntsev, Kyril M. PHYSICAL CHEMISTRY CHEMICAL PHYSICS 13, 14914-14927, (2011).

Effect of chemical structure on the crosslinking behavior of bismaleimides: Rheological study. Park, Jung Ok; Yoon, Beom-Jin and Srinivasarao, Mohan. JOURNAL OF NON-NEWTONIAN FLUID MECHANICS 166, 925-931, (2011).

N,N-Dihydrotetraazaheptacene: A Synthetic Strategy towards Larger Acenes with Ambient Stability. Appleton, Anthony L.; Barlow, Stephen; Marder, Seth R.; Hardcastle, Kenneth I. and Bunz, Uwe H. F. SYNLETT 1983-1986, (2011).

Stochastic Modeling and Simulation of Photopolymerization Process. Altun-Ciftcioglu, Gokcen A.; Ersoy-Mericboyu, Aysegul and Henderson, Clifford L. POLYMER ENGINEERING AND SCIENCE 51, 1710-1719, (2011).

Tunable Crystallinity in Regioregular Poly(3-Hexylthiophene) Thin Films and Its Impact on Field Effect Mobility. Aiyar, Avishek R.; Hong, Jung-Il; Nambiar, Rakesh; Collard, David M. and Reichmanis, Elsa. ADVANCED FUNCTIONAL MATERIALS 21, 2652-2659, (2011).

ITO-free large-area organic light-emitting diodes with an integrated metal grid. Choi, Seungkeun; Kim, Sung-Jin; Fuentes-Hernandez, Canek and Kippelen, Bernard. OPTICS EXPRESS 19, A793-A803, (2011).

Electro-thermo-mechanical modeling of GaN-based HFETs and MOSHFETs. Venkatachalam, A.; James, W. T. and Graham, S. SEMICONDUCTOR SCIENCE AND TECHNOLOGY 26, (2011).

Fully reconfigurable compact RF photonic filters using high-Q silicon microdisk resonators. Alipour, Payam; Eftekhar, Ali Asghar; Atabaki, Amir Hossein; Li, Qing; Yegnanarayanan, Siva; Madsen, Christi K. and Adibi, Ali. OPTICS EXPRESS 19, 15899-15907, (2011).

Steric Control of the Donor/Acceptor Interface: Implications in Organic Photovoltaic Charge Generation. Holcombe, Thomas W.; Norton, Joseph E.; Rivnay, Jonathan; Woo, Claire H.; Goris, Ludwig; Piliego, Claudia; Griffini, Gianmarco; Sellinger, Alan; Bredas, Jean-Luc; Salleo, Alberto and Frechet, Jean M. J. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 133, 12106-12114, (2011).

Solution-Processed Molecular Bis(Naphthalene Diimide) Derivatives with High Electron Mobility. Polander, Lauren E.; Tiwari, Shree P.; Pandey, Laxman; Seifried, Brian M.; Zhang, Qing; Barlow, Stephen; Risko, Chad; Bredas, Jean-Luc; Kippelen, Bernard and Marder, Seth R. CHEMISTRY OF MATERIALS 23, 3408-3410, (2011).

A Review of Carbon Nanotube Ensembles as Flexible Electronics and Advanced Packaging Materials. Kumar, Satish; Cola, Baratunde A.; Jackson, Roderick and Graham, Samuel. JOURNAL OF ELECTRONIC PACKAGING 133, (2011).

Palladium Thiolate Bonding of Carbon Nanotube Thermal Interfaces. Hodson, Stephen L.; Bhuvana, Thiruvelu; Cola, Baratunde A.; Xu, Xianfan; Kulkarni, G. U. and Fisher, Timothy S. JOURNAL OF ELECTRONIC PACKAGING 133, (2011).

Challenges of laser-cooling molecular ions. Nguyen, Jason H. V.; Viteri, C. Ricardo; Hohenstein, Edward G.; Sherrill, C. David; Brown, Kenneth R. and Odom, Brian. NEW JOURNAL OF PHYSICS 13, (2011).

13

pH-Controlled Exponential and Linear Growing Modes of Layer-by-Layer Assemblies of Star Polyelectrolytes. Choi, Ikjun; Suntivich, Rattanon; Pamper, Felix A.; Synatschke, Christopher V.; Mueller, Axel H. E. and Tsukruk, Vladimir V. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 133, 9592-9606, (2011).

A quantum-chemical perspective into low optical-gap polymers for highly-efficient organic solar cells. Risko, Chad; McGehee, Michael D. and Bredas, Jean-Luc. CHEMICAL SCIENCE 2, 1200-1218, (2011).

Optically Enhanced, Near-IR, Silver Cluster Emission Altered by Single Base Changes in the DNA Template. Petty, Jeffrey T.; Fan, Chaoyang; Story, Sandra P.; Sengupta, Bidisha; Sartin, Matthew; Hsiang, Jung-Cheng; Perry, Joseph W. and Dickson, Robert M. JOURNAL OF PHYSICAL CHEMISTRY B 115, 7996-8003, (2011).

High-efficiency blue-green electrophosphorescent light-emitting devices using a bis-sulfone as host in the emitting layer. Kim, Sung-Jin; Leroy, Julie; Zuniga, Carlos; Zhang, Yadong; Zhu, Lingyun; Sears, John S.; Barlow, Stephen; Bredas, Jean-Luc; Marder, Seth R. and Kippelen, Bernard. ORGANIC ELECTRONICS 12, 1314-1318, (2011).

Synthesis and Characterization of Fully Conjugated Donor-Acceptor-Donor Triblock Copolymers. Woody, Kathy B.; Leever, Benjamin J.; Durstock, Michael F. and Collard, David M. MACROMOLECULES 44, 4690-4698, (2011).

Label-free flow cytometry using multiplex coherent anti-Stokes Raman scattering (MCARS) for the analysis of biological specimens. Camp, Jr., Charles H.; Yegnanarayanan, Siva; Eftekhar, Ali A. and Adibi, Ali. OPTICS LETTERS 36, 2309-2311, (2011).

Conducting Channel Formation in Poly(3-hexylthiophene) Field Effect Transistors: Bulk to Interface. Park, Byoungnam; Aiyar, Avishek; Park, Min Sang; Srinivasarao, Mohan and Reichmanis, Elsa. JOURNAL OF PHYSICAL CHEMISTRY C 115, 11719-11726, (2011).

Modeling effects of oxygen inhibition in mask-based stereolithography. Jariwala, Amit S.; Ding, Fei; Boddapati, Aparna; Breedveld, Victor; Grover, Martha A.; Henderson, Clifford L. and Rosen, David W. RAPID PROTOTYPING JOURNAL 17, 168-175, (2011).

Vertically stacked complementary inverters with solution-processed organic semiconductors. Kim, J. B.; Fuentes-Hernandez, C.; Hwang, D. K.; Tiwari, S. P.; Potscavage, Jr., W. J. and Kippelen, B. ORGANIC ELECTRONICS 12, 1132-1136, (2011).

The nature of singlet excitons in oligoacene molecular crystals. Yamagata, H.; Norton, J.; Hontz, E.; Olivier, Y.; Beljonne, D.; Bredas, J. L.; Silbey, R. J. and Spano, F. C. JOURNAL OF CHEMICAL PHYSICS 134, (2011).

Simultaneous high-Q confinement and selective direct piezoelectric excitation of flexural and extensional lateral vibrations in a silicon phononic crystal slab resonator. Mohammadi, Saeed; Eftekhar, Ali A.; Pourabolghasem, Reza and Adibi, Ali. SENSORS AND ACTUATORS A-PHYSICAL 167, 524-530, (2011).

Ground-State Electronic Structure in Charge-Transfer Complexes Based on Carbazole and Diarylamine Donors. Winget, Paul and Bredas, Jean-Luc. JOURNAL OF PHYSICAL CHEMISTRY C 115, 10823-10835, (2011).

Electrical Contact Properties between the Accumulation Layer and Metal Electrodes in Ultrathin Poly(3-hexylthiophene)(P3HT) Field Effect Transistors. Park, Byoungnam; Aiyar, Avishek; Hong, Jung-il and Reichmanis, Elsa. ACS APPLIED MATERIALS & INTERFACES 3, 1574-1580, (2011).

Solvent Evaporation Induced Liquid Crystalline Phase in Poly(3-hexylthiophene). Park, Min S.; Aiyar, Avishek; Park, Jung O.; Reichmanis, Elsa and Srinivasarao, Mohan. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 133, 7244-7247, (2011).

Cell Surface Engineering with Polyelectrolyte Multilayer Thin Films. Wilson, John T.; Cui, Wanxing; Kozovskaya, Veronika; Kharlampieva, Eugenia; Pan, Di; Qu, Zheng; Krishnamurthy, Venkata R.; Mets, Joseph; Kumar, Vivek; Wen, Jing; Song, Yuhua; Tsukruk, Vladimir V. and Chaikof, Elliot L. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 133, 7054-7064, (2011).

Optics in Energy: the power of optical solutions. Kippelen, Bernard. OPTICS EXPRESS 18, A1-A2, (2010).

Protein-Enabled Layer-by-Layer Syntheses of Aligned, Porous-Wall, High-Aspect-Ratio TiO2 Nanotube Arrays. Berrigan, John D.; Kang, Tae-Sik; Cai, Ye; Deneault, James R.; Durstock, Michael F. and Sandhage, Kenneth H. ADVANCED FUNCTIONAL MATERIALS 21, 1693-1700, (2011).

The Energy Computation Paradox and ab initio Protein Folding. Faver, John C.; Benson, Mark L.; He, Xiao; Roberts, Benjamin P.; Wang, Bing; Marshall, Michael S.; Sherrill, C. David and Merz, Jr., Kenneth M. PLOS ONE 6, (2011).

Instrument an Off-Shelf CCD Imaging Sensor Into a Handheld Multispectral Video Camera. Yi, Dingrong; Kong, Linghua; Wang, Fengtao; Liu, Fuhan; Sprigle, Stephen and Adibi, Ali. IEEE PHOTONICS TECHNOLOGY LETTERS 23, 606-608, (2011).

pH-Triggered SERS via Modulated Plasmonic Coupling in Individual Bimetallic Nanocobs. Gupta, Maneesh K.; Chang, Sehoon; Singamaneni, Srikanth; Drummy, Lawrence F.; Gunawidjaja, Ray; Naik, Rajesh R. and Tsukruk, Vladimir V. SMALL 7, 1192-1198, (2011).

Energy levels, charge injection, charge recombination and dye regeneration dynamics for donor-acceptor pi-conjugated organic dyes in mesoscopic TiO2 sensitized solar cells. Planells, Miquel; Pelleja, Laia; Clifford, John N.; Pastore, Mariachiara; De Angelis, Filippo; Lopez, Nuria; Marder, Seth R. and Palomares, Emilio. ENERGY & ENVIRONMENTAL SCIENCE 4, 1820-1829, (2011).

Polydimethylsiloxane as a Macromolecular Additive for Enhanced Performance of Molecular Bulk Heterojunction Organic Solar Cells. Graham, Kenneth R.; Mei, Jianguo; Stalder, Romain; Shim, Jae Won; Cheun, Hyeunseok; Steffy, Fred; So, Franky; Kippelen, Bernard and Reynolds, John R. ACS APPLIED MATERIALS & INTERFACES 3, 1210-1215, (2011).

Self-Assembled Amphiphilic Diketopyrrolopyrrole-Based Oligothiophenes for Field-Effect Transistors and Solar Cells. Mei, Jianguo; Graham, Kenneth R.; Stalder, Romain; Tiwari, Shree Prakash; Cheun, Hyeunseok; Shim, Jaewon; Yoshio, Masafumi; Nuckolls, Colin; Kippelen, Bernard; Castellano, Ronald K. and Reynolds, John R. CHEMISTRY OF MATERIALS 23, 2285-2288, (2011).

Mass-Sensitive Detection of Gas-Phase Volatile Organics Using Disk Microresonators. Truax, Stuart B.; Demirci, Kemal. S.; Beardslee, Luke A.; Luzinova, Yulia; Hierlemann, Andreas; Mizaikoff, Boris; Brand, Oliver. ANALYTICAL CHEMISTRY 83, 3305-3311, (2011).

Instrument an Off-Shelf CCD Imaging Sensor Into a Handheld Multispectral Video Camera. Yi, Dingrong; Kong, Linghua; Wang, Fengtao; Liu, Fuhan; Sprigle, Stephen and Adibi, Ali. IEEE PHOTONICS TECHNOLOGY LETTERS 23, 606-608, (2011).

Deep in vivo two-photon imaging of blood vessels with a new dye encapsulated in pluronic nanomicelles. Maurin, Mathieu; Stephan, Olivier; Vial, Jean-Claude; Marder, Seth R. and van der Sanden, Boudewijn. JOURNAL OF BIOMEDICAL OPTICS 16, (2011).

STEP-GROWTH CONTROL IN TEMPLATE-DIRECTED POLYMERIZATION. Li, Xiaoyu; Hernandez, Andres F.; Grover, Martha A.; Hud, Nicholas V. and Lynn, David G. HETEROCYCLES 82, 1477+, (2011).

Perylene-3,4,9,10-tetracarboxylic Acid Diimides: Synthesis, Physical Properties, and Use in Organic Electronics. Huang, Chun; Barlow, Stephen and Marder, Seth R. JOURNAL OF ORGANIC CHEMISTRY 76, 2386-2407, (2011).

Energy-Level Alignment in 4 -Substituted Stilbene-4-thiolate Self-Assembled Monolayers on Gold. Malicki, Michal; Heimel, Georg; Guan, Ze-Lei; Ha, Sieu D.; Barlow, Stephen; Kahn, Antoine and Marder, Seth R. JOURNAL OF PHYSICAL CHEMISTRY C 115, 7487-7495, (2011).

Mono-and Dicarbonyl-Bridged Tricyclic Heterocyclic Acceptors: Synthesis and Electronic Properties. Getmanenko, Yulia A.; Risko, Chad; Tongwa, Paul; Kim, Eung-Gun; Li, Hong; Sandhu, Bhupinder; Timofeeva, Tatiana; Bredas, Jean-Luc and Marder, Seth R. JOURNAL OF ORGANIC CHEMISTRY 76, 2660-2671, (2011).

An improved dynamic Monte Carlo model coupled with Poisson equation to simulate the performance of organic photovoltaic devices. Meng, Lingyi; Wang, Dong; Li, Qikai; Yi, Yuanping; Bredas, Jean-Luc and Shuai, Zhigang. JOURNAL OF CHEMICAL PHYSICS 134, (2011).

Absorbing boundary conditions for low group velocity electromagnetic waves in photonic crystals. Askari, Murtaza; Momeni, Babak; Reinke, Charles M. and Adibi, Ali. APPLIED OPTICS 50, 1266-1271, (2011).

Thermally Induced Transformations of Amorphous Carbon Nanostructures Fabricated by Electron Beam Induced Deposition. Kulkarni, Dhaval D.; Rykaczewski, Konrad; Singamaneni, Srikanth; Kim, Songkil; Fedorov, Andrei G. and Tsukruk, Vladimir V. ACS APPLIED MATERIALS & INTERFACES 3, 710-720, (2011).

A Simple Method for Obtaining the Information of Orientation Distribution Using Polarized Raman Spectroscopy: Orientation Study of Structural Units in Poly(lactic acid). Park, Min Sang; Wong, Yee Shan; Park, Jung Ok; Venkatraman, Subbu S. and Srinivasarao, Mohan. MACROMOLECULES 44, 2120-2131, (2011).

Absence of Enhanced Diffusion in the Dynamics of a Thick Needle through Three-Dimensional Fixed Spherical Scatterers. Tucker, Ashley K. and Hernandez, Rigoberto. JOURNAL OF PHYSICAL CHEMISTRY B 115, 4412-4418, (2011).

Nonequilibrium heat flows through a nanorod sliding across a surface. Popov, Alexander V.; Viehman, Douglas C. and Hernandez, Rigoberto. JOURNAL OF CHEMICAL PHYSICS 134, (2011).

A new method for wideband characterization of resonator-based sensing platforms. Munir, Farasat; Wathen, Adam and Hunt, William D. REVIEW OF SCIENTIFIC INSTRUMENTS 82, (2011).

The effects of combined micron-submicron-scale surface roughness and nanoscale features on cell proliferation and differentiation. Gittens, Rolando A.; McLachlan, Taylor; Olivares-Navarrete, Rene; Cai, Ye; Berner, Simon; Tannenbaum, Rina; Schwartz, Zvi; Sandhage, Kenneth H. and Boyan, Barbara D. BIOMATERIALS 32, 3395-3403, (2011).

Optimization of a polymer top electrode for inverted semitransparent organic solar cells. Zhou, Yinhua; Cheun, Hyeunseok; Choi, Seungkeun; Fuentes-Hernandez, Canek and Kippelen, Bernard. ORGANIC ELECTRONICS 12, 827-831, (2011).

Synthesis and linear and nonlinear absorption properties of dendronised ruthenium(II) phthalocyanine and naphthalocyanine. Dasari, Raghunath R.; Sartin, Matthew M.; Cozzuol, Matteo; Barlow, Stephen; Perry, Joseph W. and Marder, Seth R. CHEMICAL COMMUNICATIONS 47, 4547-4549, (2011).

Synthesis of Electroactive Polystyrene Derivatives Para-Substituted with pi-Conjugated Oligothiophene via Postgrafting Functionalization. Hu, Zhaokang and Reichmanis, Elsa. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 49, 1155-1162, (2011).

Effect of positively charged backbone groups on radical cation migration and reaction in duplex DNA. Kanvah, Sriram and Schuster, Gary B. CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE 89, 326-330, (2011).

Dioxaborine- and Indole-Terminated Polymethines: Effects of Bridge Substitution on Absorption Spectra and Third-Order Polarizabilities. Matichak, Jonathan D.; Hales, Joel M.; Barlow, Stephen; Perry, Joseph W. and Marder, Seth R. JOURNAL OF PHYSICAL CHEMISTRY A 115, 2160-2168, (2011).

Dithienopyrrole-quinoxaline/pyridopyrazine donor-acceptor polymers: synthesis and electrochemical, optical, charge-transport, and photovoltaic properties. Zhang, Xuan; Shim, Jae Won; Tiwari, Shree Prakash; Zhang, Qing; Norton, Joseph E.; Wu, Pei-Tzu; Barlow, Stephen; Jenekhe, Samson A.; Kippelen, Bernard; Bredas, Jean-Luc and Marder, Seth R. JOURNAL OF MATERIALS CHEMISTRY 21, 4971-4982, (2011).

Raman Markers from Silver Nanowire Crossbars. Chang, Sehoon; Ko, Hyunhyub; Gunawidjaja, Ray and Tsukruk, Vladimir V. JOURNAL OF PHYSICAL CHEMISTRY C 115, 4387-4394, (2011).

Top-Gate Organic Field-Effect Transistors with High Environmental and Operational Stability. Hwang, Do Kyung; Fuentes-Hernandez, Canek; Kim, Jungbae; Potscavage, Jr., William J.; Kim, Sung-Jin and Kippelen, Bernard. ADVANCED MATERIALS 23, 1293+, (2011).

Multivalent Integrin-Specific Ligands Enhance Tissue Healing and Biomaterial Integration. Petrie, Timothy A.; Raynor, Jenny E.; Dumbauld, David W.; Lee, Ted T.; Jagtap, Subodh; Templeman, Kellie L.; Collard, David M. and Garcia, Andres J. SCIENCE TRANSLATIONAL MEDICINE 2, (2010).

Label-Free Raman Mapping of Surface Distribution of Protein A and IgG Biomolecules. Combs, Zachary A.; Chang, Sehoon; Clark, Tolecia; Singamaneni, Srikanth; Anderson, Kyle D. and Tsukruk, Vladimir V. LANGMUIR 27, 3198-3205, (2011).

Hydrogen-bonded LbL shells for living cell surface engineering. Kozlovskaya, Veronika; Harbaugh, Svetlana; Drachuk, Irina; Shchepelina, Olga; Kelley-Loughnane, Nancy; Stone, Morley and Tsukruk, Vladimir V. SOFT MATTER 7, 2364-2372, (2011).

Evaluating the Performance of DFT Functionals in Assessing the Interaction Energy and Ground-State Charge Transfer of Donor/Acceptor Complexes: Tetrathiafulvalene-Tetracyanoquinodimethane (TTF-TCNQ) as a Model Case. Sini, Gjergji; Sears, John S. and Bredas, Jean-Luc. JOURNAL OF CHEMICAL THEORY AND COMPUTATION 7, 602-609, (2011).

Three-beam interference lithography methodology. Stay, J. L.; Burrow, G. M. and Gaylord, T. K. REVIEW OF SCIENTIFIC INSTRUMENTS 82, (2011).

Formal Estimation of Errors in Computed Absolute Interaction Energies of Protein-Ligand Complexes. Faver, John C.; Benson, Mark L.; He, Xiao; Roberts, Benjamin P.; Wang, Bing; Marshall, Michael S.; Kennedy, Matthew R.; Sherrill, C. David and Merz, Jr., Kenneth M. JOURNAL OF CHEMICAL THEORY AND COMPUTATION 7, 790-797, (2011).

Density-functional approaches to noncovalent interactions: A comparison of dispersion corrections (DFT-D), exchange-hole dipole moment (XDM) theory, and specialized functionals. Burns, Lori A.; Vazquez-Mayagoitia, Alvaro; Sumpter, Bobby G. and Sherrill, C. David. JOURNAL OF CHEMICAL PHYSICS 134, (2011).

Comparison of positive tone versus negative tone resist pattern collapse bahavior. Yeh, Wei-Ming; Noga, David E.; Lawson, Richard A.; Tolbert, Laren M. and Henderson, Clifford L. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 28, C6S6-C6S11, (2010).

High sensitivity nonchemically amplified molecular resists based on photosensitive dissolution inhibitors. Lawson, Richard A.; Tolbert, Laren M. and Henderson, Clifford L. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 28, C6S12-C6S18, (2010).

Understanding the relationship between true and measured resist feature critical dimension and line edge roughness using a detailed scanning electron microscopy simulator. Lawson, Richard A. and Henderson, Clifford L. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 28, C6H34-C6H39, (2010).

Nonperturbative Chemical Modification of Graphene for Protein Micropatterning. Kodali, Vamsi K.; Scrimgeour, Jan; Kim, Suenne; Hankinson, John H.; Carroll, Keith M.; de Heer, Walt A.; Berger, Claire and Curtis, Jennifer E. LANGMUIR 27, 863-865, (2011).

Comparison of Sampling Strategies for Gaussian Process Models, with Application to Nanoparticle Dynamics. Hernandez, Andres F. and Grover, Martha A. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 50, 1379-1388, (2011).

High sensitivity nonchemically amplified molecular resists based on photosensitive dissolution inhibitors. Lawson, Richard A.; Tolbert, Laren M. and Henderson, Clifford L. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 28, C6S12-C6S18, (2010).

Characterization of ordered array of micropores in a polymer film. Song, Lulu; Sharma, Vivek; Park, Jung Ok; Srinivasarao, Mohan. SOFT MATTER 7, 1890-1896, (2011).

The bigger, the better: Ring-size effects of macrocyclic oligomeric Co(III)-salen catalysts. Liu, Yu; Rawlston, Jonathan; Swann, Andrew T.; Takatani, Tait; Sherrill, C. David; Ludovice, Peter J. and Weck, Marcus. CHEMICAL SCIENCE 2, 429-438, (2011).

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Steric Effects of the Initiator Substituent Position on the Externally Initiated Polymerization of 2-Bromo-5-iodo-3-hexylthiophene. Doubina, Natalia; Paniagua, Sergio A.; Soldatova, Alexandra V.; Jen, Alex K. Y.; Marder, Seth R. and Luscombe, Christine K. MACROMOLECULES 44, 512-520, (2011).

Approaches to Solution-Processed Multilayer Organic Light-Emitting Diodes Based on Cross-Linking. Zuniga, Carlos A.; Barlow, Stephen and Marder, Seth R. CHEMISTRY OF MATERIALS 23, 658-681, (2011).

Electrical and Optical Properties of ZnO Processed by Atomic Layer Deposition in Inverted Polymer Solar Cells. Cheun, Hyeunseok; Fuentes-Hernandez, Canek; Zhou, Yinhua; Potscavage, Jr., William J.; Kim, Sung-Jin; Shim, Jaewon; Dindar, Amir and Kippelen, Bernard. JOURNAL OF PHYSICAL CHEMISTRY C 114, 20713-20718, (2010).

Understanding the relationship between true and measured resist feature critical dimension and line edge roughness using a detailed scanning electron microscopy simulator. Lawson, Richard A. and Henderson, Clifford L. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 28, C6H34-C6H39, (2010).

Gel time prediction of multifunctional acrylates using a kinetics model. Boddapati, Aparna; Rahane, Santosh B.; Slopek, Ryan P.; Breedveld, Victor; Henderson, Clifford L. and Grover, Martha A. POLYMER 52, 866-873, (2011).

Electronic Processes at Organic-Organic Interfaces: Insight from Modeling and Implications for Opto-electronic Devices. Beljonne, David; Cornil, Jerome; Muccioli, Luca; Zannoni, Claudio; Bredas, Jean-Luc and Castet, Frederic. CHEMISTRY OF MATERIALS 23, 591-609, (2011).

Influence of Structural Dynamics on Polarization Energies in Anthracene Single Crystals. Martinelli, Nicolas G.; Ide, Julien; Sanchez-Carrera, Roel S.; Coropceanu, Veaceslav; Bredas, Jean-Luc; Ducasse, Laurent; Castet, Frederic; Cornil, Jerome and Beljonne, David. JOURNAL OF PHYSICAL CHEMISTRY C 114, 20678-20685, (2010).

Charge-Transport Properties of the Tetraphenylbis(indolo[1,2-a])quinoline and 5,7-Diphenylindolo[1,2-a]quinoline Crystals. Zhu, Lingyun; Kim, Eung-Gun; Yi, Yuanping; Ahmed, Eilaf; Jenekhe, Samson A.; Coropceanu, Veaceslav and Bredas, Jean-Luc. JOURNAL OF PHYSICAL CHEMISTRY C 114, 20401-20409, (2010).

Real-Time Multispectral Imager for Home-Based Health Care. Yi, Dingrong; Wang, Chao; Qi, Hairong; Kong, Linghua; Wang, Fengtao and Adibi, Ali. IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING 58, 736-740, (2011).

Biomimicry of optical microstructures of Papilio palinurus. Crne, Matija; Sharma, Vivek; Blair, John; Park, Jung Ok; Summers, Christopher J. and Srinivasarao, Mohan. EPL 93, (2011).

Efficient green OLED devices with an emissive layer comprised of phosphor-doped carbazole/bis-oxadiazole side-chain polymer blends. Kim, Sung-Jin; Zhang, Yadong; Zuniga, Carlos; Barlow, Stephen; Marder, Seth R. and Kippelen, Bernard. ORGANIC ELECTRONICS 12, 492-496, (2011).

Characterization of phosphonic acid binding to zinc oxide. Hotchkiss, Peter J.; Malicki, Michal; Giordano, Anthony J.; Armstrong, Neal R. and Marder, Seth R. JOURNAL OF MATERIALS CHEMISTRY 21, 3107-3112, (2011).

Trapped hybrid modes in solidly mounted resonators based on c-axis oriented hexagonal crystals. Wathen, Adam D.; Munir, Farasat and Hunt, William D. JOURNAL OF APPLIED PHYSICS 108, (2010).

Technique and Apparatus for Accurate Cross-Sectional Stress Profiling of Optical Fibers. Hutsel, Michael R.; Ingle, R. Reeve and Gaylord, Thomas K. IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT 60, 971-979, (2011).

Proximity Lithography in Sub-10 Micron Circuitry for Packaging Substrate. Wang, Fengtao; Liu, Fuhan; Kong, Linghua; Sundaram, Venky; Tummala, Rao R. and Adibi, Ali. IEEE TRANSACTIONS ON ADVANCED PACKAGING 33, 876-882, (2010).

Assessment of the Performance of DFT and DFT-D Methods for Describing Distance Dependence of Hydrogen-Bonded Interactions. Thanthiriwatte, Kanchana S.; Hohenstein, Edward G.; Burns, Lori A. and Sherrill, C. David. JOURNAL OF CHEMICAL THEORY AND COMPUTATION 7, 88-96, (2011).

Thin Film Assembly of Spider Silk-like Block Copolymers. Krishnaji, Sreevidhya T.; Huang, Wenwen; Rabotyagova, Olena; Kharlampieva, Eugenia; Choi, Ikjun; Tsukruk, Vladimir V.; Naik, Rajesh; Cebe, Peggy and Kaplan, David L. LANGMUIR 27, 1000-1008, (2011).

A comparative theoretical study of exciton-dissociation and charge-recombination processes in oligothiophene/fullerene and oligothiophene/perylenediimide complexes for organic solar cells. Yi, Yuanping; Coropceanu, Veaceslav and Bredas, Jean-Luc. JOURNAL OF MATERIALS CHEMISTRY 21, 1479-1486, (2011).

Vertically stacked hybrid organic-inorganic complementary inverters with low operating voltage on flexible substrates. Kim, J. B.; Fuentes-Hernandez, C.; Hwang, D. K.; Potscavage, Jr., W. J.; Cheun, H. and Kippelen, B. ORGANIC ELECTRONICS 12, 45-50, (2011).

External-Strain Induced Insulating Phase Transition in VO2 Nanobeam and Its Application as Flexible Strain Sensor. Hu, Bin; Ding, Yong; Chen, Wen; Kulkarni, Dhaval; Shen, Yue; Tsukruk, Vladimir V. and Wang, Zhong Lin. ADVANCED MATERIALS 22, 5134+, (2010).

Rylene and Related Diimides for Organic Electronics. Zhan, Xiaowei; Facchetti, Antonio; Barlow, Stephen; Marks, Tobin J.; Ratner, Mark A.; Wasielewski, Michael R. and Marder, Seth R. ADVANCED MATERIALS 23, 268-284, (2011).

Co-cross-linking Silk Matrices with Silica Nanostructures for Robust Ultrathin Nanocomposites. Kharlampieva, Eugenia; Kozlovskaya, Veronika; Wallet, Brett; Shevchenko, Valeriy V.; Naik, Rajesh R.; Vaia, Richard; Kaplan, David L. and Tsukruk, Vladimir V. ACS NANO 4, 7053-7063, (2010).

Synthesis and linear and nonlinear optical properties of metal-terminated bis(dioxaborine) polymethines. Lin, Hsin-Chieh; Kim, Hyeongeu; Barlow, Stephen; Hales, Joel M.; Perry, Joseph W. and Marder, Seth R. CHEMICAL COMMUNICATIONS 47, 782-784, (2011).

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Name Title Department Email Office Adibi, Ali Professor ECE ali.adibi@ece.gatech.edu BH 105Bidstrup Allen, Sue Ann Professor ChBE sue.allen@carnegie.gatech.edu ES&T 1370Brand, Oliver Associate Professor ECE oliver.brand@ece.gatech.edu MIRC 219Brédas, Jean-Luc Director of Intl. Programs, Regents’ Professor Chem & Biochem jean-luc.bredas@chemistry.gatech.edu MoSE 2100MBucknall, David Professor MSE david.bucknall@ptfe.gatech.edu MRDC 4503Chang, GK Professor ECE geekung.chang@ece.gatech.edu Centergy 5120Clark, Jennifer Associate Professor Public Policy jennifer.clark@gatech.edu DM Smith 218Cola, Baratunde Assistant Professor ME baratunde.cola@me.gatech.edu MRDC 2207Collard, David Professor Chem & Biochem david.collard@chemistry.gatech.edu MoSE 2100JCurtis, Jennifer Assistant Professor Physics jennifer.curtis@physics.gatech.edu MoSE G024Durgin, Gregory Assistant Professor ECE gregory.durgin@ece.gatech.edu   VL E511Filler, Michael Assistant Professor ChBE michael.filler@chbe.gatech.edu ES&T L1218Gaylord, Tom Regents’ Professor ECE tom.gaylord@ece.gatech.edu VL W419Graham, Samuel Associate Professor ME sam.graham@me.gatech.edu   Love 339Grover, Martha Associate Professor ChBE martha.grover@chbe.gatech.edu ES&T 1228Henderson, Cliff Associate Professor ChBE cliff.henderson@chbe.gatech.edu ES&T 1226Hernandez, Rigoberto Associate Professor Chem & Biochem rigoberto.hernandez@chemistry.gatech.edu MoSE 2100LHunt, Bill Professor ECE bill.hunt@ece.gatech.edu MIRC 221Kippelen, Bernard Director, Professor ECE kippelen@ece.gatech.edu   MoSE 4239Lawrence, Sharon Program Manager ECE sharon.lawrence@ece.gatech.edu MoSE 4100CLin, Zhiqun Associate Professor MSE zhiqun.lin@mse.gatech.edu MoSE 3100KMarder, Seth Associate Director, Regents’ Professor Chem & Biochem seth.marder@chemistry.gatech.edu   MoSE 1100MMartin, Jason Marketing Manager ECE jason.martin@chemistry.gatech.edu MoSE 4100CPerry, Joseph Associate Director, Professor Chem & Biochem joe.perry@chemistry.gatech.edu   MoSE G209BReichmanis, Elsa Professor ChBE elsa.reichmanis@chbe.gatech.edu ES&T 1230Riedo, Elisa Associate Professor Physics elisa.riedo@physics.gatech.edu   Howey N107Sandhage, Ken B. Mifflin Hood Professor MSE ken.sandhage@mse.gatech.edu MoSE 3100LSchuster, Gary Vasser Woolley Professor Chem & Biochem schuster@gatech.edu Boggs 1-35Sherrill, David Professor Chem & Biochem david.sherrill@chemistry.gatech.edu MoSE 2100NSrinivasarao, Mohan Professor Chem & Biochem mohan.srinivasarao@ptfe.gatech.edu MRDC 1 4506 Tolbert, Laren Regents’ Professor Chem & Biochem laren.tolbert@chemistry.gatech.edu MoSE 1100L Tsukruk, Vladimir Professor MSE vladimir@mse.gatech.edu MoSE 4100KUme, Charles Professor ME charles.ume@me.gatech.edu Marc 453Zhang, John Professor Chem & Biochem john.zhang@chemistry.gatech.edu MoSE 1100N

Directory (Management & Faculty)

Research CapabilitiesBroadband Transient Absorption Spectroscopy• Monitoring of transient changes in optical properties to provide

broadband spectral information (300 nm – 1.7 µm) and ultrafast temporal resolution (from milliseconds down to femtoseconds)

• Evaluation of the charge-transfer/recombination kinetics in potential photovoltaic materials

• Generation of non-linear absorption spectra of target organic materials that could be used in all-optical signal processing applications

Nonlinear Optical Spectroscopy • Femtosecond-pulsed Z-scan and degenerate four-wave mixing for

absolute determination of third-order optical nonlinearities• Determination of molecular nonlinearities as a function of chemical

structure variation

Microfabrication• Patterning of materials with true three-dimensional (3D) spatial

resolution including photonic crystals, microchannel and microfluidic devices, and biocompatible templates

Material Synthesis and Purification• Wet chemistry laboratory covering over 2000 sq ft, including 25

fume hoods, and containing state-of-the-art equipment

Physical, Chemical, and Optical Material Characterization• Gas chromatograph-mass spectrometry• High-pressure liquid chromatography-mass spectrometry• UV/VIS/NIR spectrophotometry

• Spectrofluorimetry• FT-IR spectrometry• Electrochemistry• Thermogravimetric analysis • Thermal analysis of materials using differential scanning calorimeter

(Q200, TA Instruments)• Gas permeation chromatography for the measurement of molecular

weights and molecular weight distributions of polymers

Surface Analysis• FT-IR characterization techniques that are surface-sensitive or

suitable for thin film analysis such as specular reflectance, diffuse reflectance, attenuated total reflectance, grazing angle specular reflectance

• Atomic Force Microscopy (AFM) using an Agilent 5600LS for the characterization of surface properties through a wide range of imaging techniques: topography in contact or tapping mode, scanning tunneling microscopy (STM), lateral force microscopy (LFM), electric force microscopy (EFM), Kelvin force microscopy, piezo-force microscopy, fluid immersed imaging, and for electrochemical microscopy of samples, and the system can be used as a nanolithography tool

• X-ray photoelectron spectrometry (XPS) using an Axis Ultra HSA, Kratos, characterized by high-energy resolution and high sensitivity, for the determination of elemental composition of surfaces with surface mapping capabilities and an integrated ultraviolet photoelectron spectroscopy (UPS) unit

16

Center for Organic Photonics & ElectronicsGeorgia Institute of Technology

Molecular Science & Engineering Building901 Atlantic Drive, Suite 4100C

Atlanta, GA 30332-0400

I hope that you will enjoy reading the latest edition of COPE’s newsletter. It is hard to believe that we are only a few weeks away from the end of this calendar year. The past year has been rich in various events involving our Center and its members. This newsletter only covers some highlights and shows the vibrant

Director’s Note

activity in the field of organic photonics and electronics on the campus of Georgia Tech, thanks to the relentless efforts from our staff, students, scientists, and faculty.

During 2011, the faculty membership of COPE has continued to grow and currently counts 32 faculty members from seven different schools. I am particularly happy to welcome one of our newest faculty, Jennifer Clark from the School of Public Policy, part of the Ivan Allen College of Liberal Arts. Her research and expertise on regional economic development will help COPE to transfer our technologies in printed electronics to the State of Georgia and contribute to future economic development in our region. With her contributions and those of the latest additions from the College of Engineering, COPE is striving to expand its expertise further down the value chain of printed electronics and integrate its recognized leadership in the synthesis of new multifunctional materials for organic photonics and electronics with aspects relating to process engineering and monitoring, and to pilot manufacturing.

The Spring was marked by the 5th Solvay-COPE symposium on organic electronics which was held again on our campus in Atlanta, after having been hosted by IMEC in Belgium in 2010 and by the Chinese Academy of Sciences the year before. The quality of the results presented during this meeting by speakers from academia and industry speaks for the rapid increase in the maturity of organic-based printed electronic technologies and their economic potential. Mark your calendars for the 2012 edition that will take place May 11-12 in Pittsburgh and be hosted by Plextronics, Inc.

Our faculty members continue to receive the highest honors and awards. I want to thank them for their outstanding scholarship and for contributing to the recognition of COPE as a hub for technology-driven research and a resource for industry in the

field of organic photonics and electronics. In particular, I want to congratulate Elsa Reichmanis for her leading role in the Integrative Graduate Education and Research (IGERT) program that was awarded to Georgia Tech by the National Science Foundation. The $3M 5-year program will support graduate students working in the areas of nanomaterials for energy storage and conversion.

Thank you also to Jean-Luc Brédas for a successful second year of the Georgia Tech-COPE Distinguished Lecture Series. We were fortunate to host Mark Thompson and Ana Claudia Arias, and are looking forward to the lectures of John Rogers and Takeo Someya. I invite you to check out the COPE (www.cope.gatech.edu) where you will find among other recent additions by Jason Martin, recordings of these seminars.

COPE is fortunate to count Sharon Lawrence as its new Program Manager. She brings a wealth of experience to the Center. If you have not done so yet, take a few moments to stop by COPE’s office (MoSE, room 4100 C) and meet her.

Sincerely,

Bernard KippelenDirector, COPE

cope.gatech.edu

Editors:

Content Coordinator: Design & Production:

Stephen Barlow, Jean-Luc Brédas, Veronique Brédas, Bernard Kippelen, Seth Marder, Jason Martin, Joe Perry, Mariacristina RumiSharon LawrenceJason Martin

Credits

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