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Page from Carter Group Website - UMass For online viewing only – do not print, copy or redistribute Copyright Carter 2005
For Online Review Only
Kenneth CarterUMASS 2005
BiopatternedSurfaces
Carter Research GroupUniversity of Massachusetts
Page from Carter Group Website - UMass For online viewing only – do not print, copy or redistribute Copyright Carter 2005
For Online Review Only
Kenneth CarterUMASS 2005
NanoMolding – embed functionality into feature- use LFRP to incorporate functionality
NanoMolding – embed functionality into feature- use LFRP to incorporate functionality
Protein chipsProtein chips
Biopatterned Surfaces
Page from Carter Group Website - UMass For online viewing only – do not print, copy or redistribute Copyright Carter 2005
For Online Review Only
Kenneth CarterUMASS 2005
B B B B B
B B B B BB
B
Biotin patterned surfaceStreptavidin
Incubation in aq. soln. of avidin
Wash away excess avidin and incubate with a biotin
conjugate of the biomolecule
BBiotinylated Biomolecule( e.g., peptides, DNA, or
proteins )
B B B B BB
B B B BB BSurface patterned withbiomolecules
=
=
• Qi, K.; Wooley, K. L.; Jhaveri, S. B.; Sogah, D. Y.; Beinhoff, M.; Malkoch, M.; Carter, K. R.; Hawker, C. J. PMSE Prep., 2004, 91133-134.
• Hawker, C. J.; Wooley, K. L.; Carter, K. R.; Sogah, D. Y.; Qi, K.; Jhaveri, S. B.; Beinhoff, M.; Malkoch, M. PMSE Prep., 2004, 90, 279.
Biopatterned Surfaces
Page from Carter Group Website - UMass For online viewing only – do not print, copy or redistribute Copyright Carter 2005
For Online Review Only
Kenneth CarterUMASS 2005O N
X
O N
.+
O N
X
.
.+ O N.
120o C
120o C
Exchange between nitroxides
Alkoxyamine within crosslinked polymer
Alkoxyamine within crosslinked polymer
( Large excess )
( very small %) O
Functional groupexchanged onto
the growing brush ends
Functional groupexchanged onto
the growing brush ends
Nitroxide Exchange:- Based on equilibrium between dormant alkoxyamine and active nitroxide
Added ‘free’ functional alkoxyamine in solution
Added ‘free’ functional alkoxyamine in solution
PolyO N
X
Functionality via Nitroxide Exchange
Page from Carter Group Website - UMass For online viewing only – do not print, copy or redistribute Copyright Carter 2005
For Online Review Only
Kenneth CarterUMASS 2005
O N
X
Polymerize brushes in the presence of functional
alkoxyamine
Polymerize brushes in the presence of functional
alkoxyamine
X= Desired Functional Groupto be introduced on the surface
X XXXX X
XX
XX
XXX XXXX X
XX
XX
XX
X XXXX X
XX
XX
XX
Exchanged Functional groupExchanged Functional group Polymer brushes – control solvationPolymer brushes – control solvation
Embedded Alkoxyamine InitiatorsEmbedded Alkoxyamine Initiators
Functionality via Nitroxide Exchange
Page from Carter Group Website - UMass For online viewing only – do not print, copy or redistribute Copyright Carter 2005
For Online Review Only
Kenneth CarterUMASS 2005
Example: Biotinylated Surfaces
Example 1: Biotin - A Biological Ligand
• Biotin functionality is covalently attached to the “nitroxide”part of the alkoxyamine
O N
OH
O N
Br
NaN3
DMF
O N
N3
O N
NH2
LiAlH4
THF
Biotin-NHS esterO N
NH
OS
NH NH
O
PPh3
DMF, Et3N
CBr4
HH
• Qi, K.; Wooley, K. L.; Jhaveri, S. B.; Sogah, D. Y.; Beinhoff, M.; Malkoch, M.; Carter, K. R.; Hawker, C. J. PMSE Prep., 2004, 91 133-134.
• Hawker, C. J.; Wooley, K. L.; Carter, K. R.; Sogah, D. Y.; Qi, K.; Jhaveri, S. B.; Beinhoff, M.; Malkoch, M. PMSE Prep., 2004, 90, 279.
Page from Carter Group Website - UMass For online viewing only – do not print, copy or redistribute Copyright Carter 2005
For Online Review Only
Kenneth CarterUMASS 2005
B BBBBB
BB
BB
BBB BBBBB
BB
BB
BB B BBBBB
BB
BB
BB
125o C
DMF
Silicon / Quartz substrate
O NO NMe2 .O N
NH
OS
NH NH
O
HH
1.168.75 KSilicon1
PDIMnSub.Run#
Alexa Flor labelledstreptavidin
10 mM HEPES buffer
Scale bar = 100um
PDMA no Biotin
Biotinylated PDMA
Bioresponsive Surfaces
• Qi, K.; Wooley, K. L.; Jhaveri, S. B.; Sogah, D. Y.; Beinhoff, M.; Malkoch, M.; Carter, K. R.; Hawker, C. J. PMSE Prep., 2004, 91 133-134.
• Hawker, C. J.; Wooley, K. L.; Carter, K. R.; Sogah, D. Y.; Qi, K.; Jhaveri, S. B.; Beinhoff, M.; Malkoch, M. PMSE Prep., 2004, 90, 279.
Page from Carter Group Website - UMass For online viewing only – do not print, copy or redistribute Copyright Carter 2005
For Online Review Only
Kenneth CarterUMASS 2005
Scale bar = 100um
40 um
Selective attachment of labeled streptavadin!
Individual 100 nm lines could not be resolved due to limitations of confocal
microsxopy
Selective attachment of labeled streptavadin!
Individual 100 nm lines could not be resolved due to limitations of confocal
microsxopy
100 um
Fluorescence Images
Qi, K.; Wooley, K. L.; Jhaveri, S. B.; Sogah, D. Y.; Beinhoff, M.; Malkoch, M.; Carter, K. R.; Hawker, C. J., Manuscript in Preparation, 2005
Page from Carter Group Website - UMass For online viewing only – do not print, copy or redistribute Copyright Carter 2005
For Online Review Only
Kenneth CarterUMASS 2005
IgE / Dinitrophenol Interactions
(1) First IgETreatment
(2) DNP-BSA HaptenDetachment Treatments
10 um10 um
40 um
10 um
(3) Second IgETreatment
10 um
Qi, K.; Wooley, K. L.; Jhaveri, S. B.; Sogah, D. Y.; Beinhoff, M.; Malkoch, M.; Carter, K. R.; Hawker, C. J., Manuscript in Preparation, 2005