Chemistry Letters...464 Selective Extraction of Endohedral Metallofullerenes Using a Mixed Solvent of Triethylamine and Acetone A mixed solvent of triethylamine and acetone was used

Chemistry Lettershttp://www.csj.jp/journals/chem-lett/

Vol.34 No.4 CMLTAGApril, 2005 ISSN 0366-7022

Copyright � 2005 The Chemical Society of Japan

454 Iminium Alkaloids from Marine Inverte-brates: Structure, Biological Activity, andBiogenesis

MeMe

HNCOO–

OHO O

O

O

Me

OMe

OH

H

Pinnatoxin A

+HN

OSO3–

OH

H

H

H

Me

Symbioimine

O

Me

OMe

N+

Me

O

Me

MeCOOH

Norzoanthamine hydrochloride

Cl–

Masaki Kita and Daisuke Uemura

The discovery of new natural products frequently triggers a breakthrough in basic sciences. This review features marineiminium alkaloids, which control biologically and physiologically intriguing phenomena. Pinnatoxins, potent shellfish poi-sons purified from the Okinawan bivalve Pinna muricata, activate Ca2þ channels. Norzoanthamine hydrochloride, isolatedfrom the colonial zoanthid Zoanthus sp., suppresses decreases in bone weight and strength in ovariectomized mice. Symbio-imine, an amphoteric iminium metabolite from the dinoflagellate Symbiodinium sp., inhibits osteoclast differentiation. Thelatter two compounds are good candidates for antiosteoporotic drugs.

Highlight Review

Letter

460 Kinetic Study of Dehydrogenation betweenH–Siloxane and Ti–OH on TiO2

TiO2 Ti–OH

TiO2Ti O Si CH3

O

O

CH3

CH3

H3C Si CH3

H3C Si CH3

Ti

H2O

H-O

H O-HH

SiH

k(free)

k(H2O)

Decreasing nucleophilicity of TiOH group by hydration

k(free) >> k(H2O)

H–O :

Si +

–δ

–δ

δ

The solid-liquid reaction between titanium dioxide (TiO2) and H-siloxane involved twodehydrogenation condensation; one between Ti-OH groups and Si-H groups, and theother between hydrated Ti-OH groups and Si-H groups.

H3C Si

CH3

CH3

O Si O Si

CH3

CH3

CH3

H

CH3 H–O :

Ti–O–Si H2+

Ti–O–Si H2+Ti H

+δ

Akira Nakabayashi, Junko N. Kondo,Michikazu Hara, and Kazunari Domen

C-56 Chemistry Letters Vol.34, No.4 (2005)

Copyright � 2005 The Chemical Society of Japan http://www.csj.jp/journals/chem-lett/

462 Templated Synthesis of Mesoscopic TubeSilicates Using Aqueous Mixtures of Naph-thalenediol and Ammonium Surfactants

Rod-like aggregates are formed from the

mixture of CTAB and 2,3-DHN in pure

water, and they act as templates for

directing the sol−gel synthesis of tube

structures.100 nm

Munetoshi Isayama, Kazuko Nomiyama,Tadatsugu Yamaguchi, and Nobuo Kimizuka

464 Selective Extraction of EndohedralMetallofullerenes Using a Mixed Solvent ofTriethylamine and Acetone

A mixed solvent of triethylamine andacetone was used to extract endohedralmetallofullerenes from raw soot. Theefficiency of extraction was investigated byextracting Ce-containing metallofullerenes,Ce@C82 and Ce2@C80. The resultantextract contained little or no emptyfullerenes, that is, the Ce-matallofullereneswere selectively extracted.

Takeshi Kodama, Korenari Higashi, TakafumiIchikawa, Shinzo Suzuki, Hiroyuki Nishikawa,Isao Ikemoto, Koichi Kikuchi, and YohjiAchiba

466 Stereoselective Tandem Aldol-TishchenkoReaction with Acylsilanes

LDA

R2 SiMe3

OHO R2

OR2CHO

(2.5 equiv.)

SiMe3

OR1

R1

SiMe3

OLi

R1

Mitsunori Honda, Ryota Iwamoto, YoshieNogami, and Masahito Segi

468 Lewis Base-catalyzed DiastereoselectiveMannich-type Reaction between Ketene SilylAcetals and Chiral Sulfinimines

OMe

OSiMe3 S

O

p-Tol

Ph

NH

OMe

O

THF, −78 °C24 hPh H

NS p-Tol

OAcONn-Bu4

(1 mol%)

+

d.r. = 96:4 quant.

Eiki Takahashi, Hidehiko Fujisawa, ToshiharuYanai, and Teruaki Mukaiyama

470 Application of Organocerium Reagents forthe Efficient Conversion of Z-�,�-Unsaturat-ed Weinreb Amides to Z-�,�-UnsaturatedKetones

PO

NOMe

2) R1CHO (2)

O

R2OR2O

R1

O

NOMe

1) base, THF, -78 °C

31b: R2=o-tolyl

1c: R2=CF3CH2

R1

O

R3

R3Li, CeCl3 THF

4

Satoshi Kojima, Tsugihiko Hidaka, and AtsushiYamakawa

Chemistry Letters Vol.34, No.4 (2005) C-57


472 A Novel Modification for Silicalite-1 withHigh Stability and Selectivity in Vapor PhaseBeckmann Rearrangement of Cyclohexa-none Oxime

We report a novel modification for zeolite silicalite-1 with hydrofluoric acid solution,which exhibited remarkable improvements in stability and selectivity for Beckmannrearrangement of cyclohexanone oxime to caprolactam.

5 10 15 20 25 30 35 40 45 50 55

65

70

75

80

85

90

95

100

FS-1

NS-1

S-1

Co

nve

rsio

n /

%

Time on stream / h

Weichuan Tao, Dongsen Mao, Jianchao Xia,Qingling Chen, and Ying Hu

474 Synthesis of Box-shaped Pentaporphyrinwith Cobalt(II) Porphyrin in the Center;Reversible O2 Binding in the Box

N

NN

NN

N

N

N

Co

Rh

Rh

Rh

Rh

N

OO

=Rh NN

N

N RhCl

Keirei Uruma, Kiyoshi Tsuge, Yoichi Sasaki,and Taira Imamura

Electronic Supporting Information

476 Laser-induced Structural Conversions of Sil-ver Nanoparticles in Pure Water —Influenceof Laser Intensity—

Takeshi Tsuji, Takanori Higuchi, and MasaharuTsuji

478 Reaction of (4-Nitorophenyl)nitrene withMolecular Oxygen in Low-temperature Ma-trices: First IR Detection and Photochemis-try of Aryl Nitroso Oxide

ArNO2

O2 / 50 K

>590 nm / -O2

>415 nmAr N Ar N

OO

Ar NOO

ArNO+

+ O (3P)

cis trans

First IR Detection of Aryl Nitroso Oxide

(Ar = 4-nitrophenyl)

Hiroshi Inui, Masatoshi Irisawa, and ShigeroOishi


480 New Method for Preparation of IsolableN-tert-Alkoxyarylaminyl Radicals

Ph

NPhO R80 °C, 0.5−4 h

in benzeneNO

Ph

Ph N NR

R

R = C(Me2)COOMe, C(Me)(CN)CH2CHMe2, C(Me)(CN)CH2C(Me2)OMe

+

Stable N-tert-alkoxyarylaminyls were prepared by the reaction of2,4-diphenyl-6-tert-butylnitrosobenzene with azo compounds. They could beisolated in 18−49% yields, after column chromatography.

Yozo Miura and Yoshikazu Muranaka




482 Synthesis of Fine Mg1�xCaxFe2O4 FerritePowder Having High Heat Ability underAC Magnetic Field

Fine Mg1-xCaxFe2O4 ferrite powders for localthermal coagulation therapy were synthesizedby a reverse coprecipitation method. Thefigure shows the typical results for heatability under an AC magnetic field (370 kHz,4 kA/m). The enhancement of temperature(∆T) was improved by the partial Ca2+

substitution. This material has the best heatability in reported materials.

0

20

40

60

80

100

120

0 5 10 15 20

∆ T

/o C

Time/min.

Mg0.5

Ca0.5

Fe2O

4

Mg0.3

Ca0.7

Fe2O

4

MgFe2O

4

Hiromichi Aono, Hideyuki Hirazawa, TakayukiOchi, Takashi Naohara, Kensaku Mori,Yasumasa Hattori, Tsunehiro Maehara,Hiroyuki Kikkawa, and Yuji Watanabe

484 Stilbene-extended Trithienylmethano-phanes: A Novel C3-Symmetric Cage Mole-cule Capable of Accommodating an OrganicMolecule As Well As Three Silver(I) Ions

S

S

R

S

S

S

R

S

S

S

R

S

S

S

R

S

Ag+

Ag+ Ag+

AgOTf

Hiroyuki Kurata, Kenji Haruki, and Masaji Oda

486 The First Isolation of 1,3-Diaza-2-sila-4-cy-clopentene Radical Cation Salt: The X-rayStructure and Electronic Properties

Shintaro Ishida, Tohru Nishinaga, and KoichiKomatsu


488 Degradation of p-Chlorophenol by �-Radiol-ysis: Radiolytic Intermediates and Theoreti-cal Calculations

Three transition states (TS1-3) and a

prereaction complex (PC) related to

TS3 were found through a Density

Functional Theory (DFT) study on

the reaction between hydroxyl radical

and p-CP molecule. This indicates

that the main p-CP degradation

pathway was the formation of

4-chlorocatechol.

Shao-Yang Liu, You-Peng Chen, Han-Qing Yu,and Qian-Rong Li

490 Microenvironments in Faujasite-type Fe–AlZeolites Probed by Europium Luminescence

Europium photoluminescence spectrain water (a) and in Eu3+-exchangedhydrated faijasite (b).

Yasushi Nakamura, Masatoshi Hasaegawa, andKazuko Katsuki



492 Photochromic and Fluorescence Propertiesof a Hemiindigo in the Presence of BovineSerum Albumin

The hemiindigo derivative having a pyrrole ring exhibited photochromic and thermochromicproperties in the presence of bovine serum albumin (BSA) in phosphate buffer solution.

K∆∆

hν

hνFluorescence

hν

hν

NH

O

NH

hν NH

O NH

∆

BSA

Masashi Ikegami and Tatsuo Arai

494 Preparation of Organic Light-emittingField-effect Transistors with AsymmetricElectrodes

Tomo Sakanoue, Eiichi Fujiwara, Ryo Yamada,and Hirokazu Tada

496 Efficient Decomposition of NO2 into N2 andO2 by 193-nm ArF Laser in N2 Atmosphere 193 nm ArF laser photolysis of NO2 in N2 at 1 atm

NO2

Major final products

NO + O2

N2 + O2

High NO2 concentration

Low NO2 concentration

Masaharu Tsuji, Kenji Noda, Hiroshi Sako,Taro Hamagami, and Takeshi Tsuji

498 Synthesis, Structure, and Fluxional Behaviorof �1-O-Enolatoiron(II) Complexes Derivedfrom 1,3-Dicarbonyl Compounds

PEt2

Et2P Fe

PEt2Et2P

N NR1

O

R2

O

− N2

H

FeP P

P P

O R1

O

R2

−

+Et2 Et2

Et2 Et2

1a: R1 = R2 = Me (59%)1b: R1 = R2 = OMe (71%)1c: R1 = Me, R2 = OMe (80%)

Sayori Kiyota, Jun-ichi Tamuki, NobuyukiKomine, Masafumi Hirano, and SanshiroKomiya


500 A High Voltage Dye-sensitized Solar Cellusing a Nanoporous NiO Photocathode

electolyte

Powergeneration

Powergeneration

photoanode photocathode

TiO2/Dye1 NiO/Dye2

Akihiko Nakasa, Hisanao Usami, SeiichiSumikura, Satoshi Hasegawa, Toshiki Koyama,and Eiji Suzuki



502 Thermal Stability of the Hydration Structureof Short-chain Poly(oxyethylene) in CarbonTetrachloride: An Infrared SpectroscopicObservation of the Breakdown of HydrogenBonds

O O

O

OH H

Bidentate H-bonded

O O

O

OH

H

Monodentate H-bonded

Temperature

Unbonded

O O

O

OHH

Md. Ruhul Matin, Shaheda A. Wahab, YukiteruKatsumoto, Hiroatsu Matsuura, and KeiichiOhno

504 Ruthenium-catalyzed Hydrative Dimeriza-tion of Allenes

•

OR

RR

O

+ R

Ru3(CO)12 (2 mol%, Ru)CF3COOH (10 mol%)

iPrOH - H2OH H

H

H

Shinichi Saito, Naotomo Dobashi, and YasuoWakatsuki

506 Energies of Low-lying Excited States andReactivity of Giant Polycyclic AromaticHydrocarbons with a Hole Inside

By studying the lowest singlet and triplet

excitations of series of large polycyclic aromatic

hydrocarbons (PAHs) by means of ZINDO and

MO/8E methods, there appear blue shifts for

those holed PAHs, in contrast to the ordinary

π-conjugated systems with simple red shifts. In

all investigated PAHs the even-layered holed

PAHs show higher aromatic character. In

addition, there is larger global softness in this

kind of widely delocalized π-systems from

reactivity indices.

20 30 40 50 60 70 80 90 1000.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

ω

S0-S

1

Number of Six-Membered Rings

Exc

itatio

n E

nerg

ies

/ eV

0.04

0.06

0.08

0.10

0.12

0.14

0.16

Rea

ctiv

ity in

dex

ω /a

.u.

Xia Yang, Balazs Hajgato, Megumi Yamada,and Koichi Ohno

508 Optical Properties of Long-range-ordered,High-density Gold Nanodot Arrays PreparedUsing Anodic Porous Alumina

Highly ordered Au nanodot array 200 nm

Au nanodot

Futoshi Matsumoto, Masahiro Ishikawa,Kazuyuki Nishio, and Hideki Masuda

510 Wet Chemical Synthesis of Ag NanowiresArray at Room Temperature

reduction of AgNO3 by NaBH4 solutions

and their arrays.

A new simple and rapid method to prepare

silver nanowires arrays by direct chemical

at process,reported.room temperature was In the

no adscititious seeds and stabilizers were needed.

The controlto andpresent method was easy

andlow-cost, can be extended to prepare 1D

nanostructureorganic cable-likeinorganicand

Ju Weigang, Zhang Xiaohong, and Wu Shikang



512 Preparation of Nanostructured Li1:4Al0:4-Ti1:6(PO4)3 Glass-Ceramics by a CitrateProcess

Nanostructured Li1.4Al0.4Ti1.6(PO4)3 glass-

ceramics were obtained for the first time by

heat-treating its precursor powders which were

successfully synthesized by a citrate process. The

FESEM image of the specimen heat-treated at

900 °C for 6 h showed that the specimen was very

dense, and the grain size was uniform with average

size under 100 nm.Xiaoxiong Xu, Zhaoyin Wen, Zhonghua Gu,Xiaohe Xu, and Zuxiang Lin

514 Stereoselective Synthesis of trans-3,4-Dihy-dropyran-2-ones by Phenoxide ion-catalyzedTandemMichael Addition and Lactonization

R3OPh

OSiMe3Bu4NOPh

R1

O

R2

OR1 O

R2

+(cat.)

R3

OR1 O

R2R3+

trans cis

Takashi Tozawa, Yoshinobu Yamane, andTeruaki Mukaiyama

516 A Stable Hexagonal Mesoporous Alumino-phosphate Assembled from Preformed Alu-minophosphate Precursors

Assembly Calcination

Assembly of preformed

aluminophosphate precursors

with surfactant of CTAB

Hexagonal arrays

of mesopores

Thermally stable mesoporous

aluminophosphate containing

zeolite-like connectivity

+

Kaifeng Lin, Lifeng Wang, Zhenhua Sun, QingYang, Yan Di, Daliang Zhang, Dazhen Jiang,and Feng-Shou Xiao

518 Synthesis and Characterization of Water-Soluble Multi-walled Carbon NanotubesFunctionalized with Polycystine

heat lamp.

Water-soluble multi-walled carbon

nanotubes functionalized(MWNTs)

with achievedpolycystine byare

solid-state reactionpolycondensation

under the irradiation of the infrared

Tao Wang, Guang-Chao Zhao, and Xian-WenWei

520 Surface Conductivity in Methyl-monolayer/Si Heterojunction Structure in the Presenceof Water

I d/ m

A

Vd / V

-2.0

-1.6

-1.2

-0.8

-0.4

00 -0.2 -0.4 -0.6 -0.8 -1.0

gm : 2.8 x 10-3 A/V

in presence of water

V = 0 V

V = 0.2 V

V = 0.4V

V = 0.6 V

g

g

g

g

Daisuke Niwa, Hiroshi Fukunaga, TakayukiHomma, and Tetsuya Osaka



522 The High Thermoelectric Properties of Con-ducting Polyaniline with Special Submicron-fibre Structure

Conducting polyaniline withspecial submicron-fibre structurewas prepared and it exhibited20 times higher thermoelectricpower factor at 300 K thanthe sample with general grainstructure.

Qin Yao, Lidong Chen, Xiaochuan Xu, andChunfen Wang

524 Small-angle X-ray Scattering from Multi-walled Carbon Nanotubes (CNTs) Dispersedin Polymeric Matrix

10-4

10-2

100

102

104

I(q)

/a.u

.

0.12 3 4 5 6 7 8 9

12 3

q/nm−1

experiment

theory

r

410

ρ

Toru Inada, Hiroyasu Masunaga, ShinichiKawasaki, Masahiro Yamada, Kana Kobori,and Kazuo Sakurai


526 Hydrothermal Synthesis and StructuralCharacterization of a Manganese(II) WireMade Up of Octahedral and Square Pyrami-dal Mn(II) Ions

Hydrothermal reaction between Mn(II) ion and acidα-phenylcinnamic α-phenylcinnamate).yields 1D-chain complex, [Mn5L8(OH)2] (L =

[Mn5L8(OH)2] consists of incomplete double cuboidal motifs in whichoctahedral {MnO6} and square pyramidal {MnO5} Mn(II) ions linked

motifs are linked by octahedral Mn(II) ions to form 1D-chain structure.µ-carboxylate ligands. The double cuboidalµ3-hydroxide and through

Hitoshi Kumagai, Motoko Akita-Tanaka,Satoshi Kawata, and Katsuya Inoue

528 Stereospecific Electrochemical Carboxyla-tion of �-Bromostyrene by Use of Nickel(II)Catalyst

0.1 MBu4NBF4-DMF

(E )-1

PhBr

Ph

Br(Z )-1

PtCO2

from (E )-1 71%, E/Z=99/1from (Z )-1 78%, E/Z=1/99

Ph

CO2H

PhCO2H

(E )-2+

(Z )-2

Mg

"20 mol% NiBr2 bpy"

3F/mol, 10 mA/cm2, -10°C

Chunxiang Kuang, Qing Yang, HisanoriSenboku, and Masao Tokuda

530 Reductive Coupling of Aryl Bromides UsingCat. Pd/TDAE System in Ionic Liquids

Ar ArAr Brcat. PdCl2(PhCN)2, TDAE

BdmimBF4 or BdmimTf2N60 °C

22

1

Manabu Kuroboshi, Toshiyuki Takeda, RyotaMotoki, and Hideo Tanaka



532 Ultrastable Steroidal Nanotube Formed inOrganic Solvents

Jong Hwa Jung, Soo Jin Lee, Sung-Hwan Han,Seiji Shinkai, and Toshimi Shimizu

534 Stepwise Preparation of Linear �-Conjuga-ted Bis(terpyridine)metal Polymer Chains atGold Surface

Katsuhiko Kanaizuka, Masaki Murata,Yoshihiko Nishimori, Ichiro Mori, KazuyukiNishio, Hideki Masuda, and Hiroshi Nishihara

536 Low-Temperature Synthesis of c Axis Ori-ented Submicrometer-scale ZnO Cones

20 40 60 800

400

800

1200

1600

(002

)(1

00)

(101

)

(102

)

(110

)

(103

)

Rel

ativ

e In

tens

ity /

A.U

.

Two Theta / deg

(004

)

R. S. Mane, Seung Jae Roh, and Sung-HwanHan

538 [3+2] Cycloaddition Reactions of Cyclopro-pylmethylsilanes and �-Keto Aldehydes:Trans- and Cis-selective Formation of 2-Silylmethyltetrahydrofurans R1

3SiR2

HO

O

CH2Cl2

OR1

3Si R2

O

1.5 equiv.

+1.2 equiv. SnCl 4

0 °C; 43 - 90%, trans only

−78 °C; 54% - Quant., cis : trans = 7 : 3R = aryl and alkoxy groups2

Kohei Fuchibe, Yuji Aoki, and TakahikoAkiyama

540 MUSASHI: NMR Pulse Width Determina-tion Method by Nonlinear Least SquareCurve Fitting

1H- NMR Nutation Experiment

Curve Fitting by MUSASHI

τ90 (90° pulse width) = 7.10µs

Fitting Result

−70

0

70

0 10 20 30 40Pulse Width / µs

Inte

nsity

/ ar

bitr

ary

unit

Pulse Width / µs

2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42

Tomomitsu Kurimoto, Katsuo Asakura,Chiharu Yamasaki, and Nobuaki Nemoto



542 Formation of Self-assembled TubularStructures by Mixing Cyclodextrin andPolymers without Solvents

Akira Harada, Miyuko Okada, and YoshinoriKawaguchi


544 Decomposition of Monolayer Coverage onGold Nanoparticles by UV/ozone Treatment

TEM image demonstrates that the UV/ozone process only affects adsorbedsurface species and not move the distributions of gold nanoparticles.

UV/O3

40 nm

2-Dimentional monolayers of Au nanoparticles, covered with cationic dichainsurfactant on the whole surface, were treated with UV/ozone.

Shufeng Pang, Yousuke Kurosawa, TakeshiKondo, and Takeshi Kawai

546 Perhydroxylation of Chiral CycloheptatrieneRing through Stepwise Oxidation underRegio- and Stereocontrol

O O

O

O

OOO

O

CHO

OHC

or

OOO

O

HO

OMe

OOO

O

O O X

XX = H or OH

1

2 3

oxidation from back oxidation from front

Takashi Sugimura, Masami Kagawa, NaokoOhuchi, Aya Inoue, and Tadashi Okuyama

548 Monodisperse SiO2/TiO2 Core-shell Colloi-dal Spheres: Synthesis and Ordered Self-as-sembling

SiO2

TiO2

Self-assembling

Renxiao Liu, Peng Dong, and Sheng-Li Chen

550 Synthesis of 3,4-Disubstituted Quinolin-2(1H)-ones via Palladium-catalyzed Regiose-lective Cross-coupling Reactions of 3-Bromo-4-trifloxyquinolin-2(1H)-one with Arylboro-nic Acids

Palladium-catalyzed regioselective cross-coupling reactions of 3-bromo-4-trifloxy-quinolin-2(1H)-one with arylboronic acids provide an efficient and practical routefor the synthesis of 3,4-disubstituted quinolin-2(1H)-ones.

N O

CH3

Br

OTf

N O

CH3

Ar2Ar1

1) [Pd], Ar1B(OH)2, RT

2) [Pd], Ar2B(OH)2, 60°CJie Wu, Liang Zhang, and Xiaoyu Sun




552 Effect of Corona Poling during Film CastingProcess of Photorefractive Polymers

The new film fabrication technique, corona poling, was examined during the film castingprocess to educe an uniaxial orientation of non-linear optic (NLO) compounds in thephotorefractive polymer film.

2. Corona charging

3. Evaporation of solvent

V

heater

V8 kV

+ +++

+ ++

+++

heater

Corona Charger Spacer

1. Cast of solution

Eched ITO Electrode

NLO

4. Hot Press Press

heater

Shin-ya Tanaka, Norio Nagayama, and MasaakiYokoyama

554 Molecular Design of Squaraine Dyes forEfficient Far-red and Near-IR Sensitizationof Solar Cells

The introduction of short carboxyl anchoring groups into anilino-squaraines resulted in a muchimproved photosensitization on nanocrystalline TiO2 electrode over far-red/near-IR region, yieldinga maximum monochromatic incident photon-to-current conversion efficiency of 73% at 670 nm.

400 500 600 700 8000

10

20

30

40

50

60

70

80

90

100

IPC

E

Wavelength/nm

SQ1 SQ2 SQ4 SQ3

Unefficient

CB

SQ4+

SQ4*

SQ2+

SQ2*

I3-I-

Efficient

Fast SlowSQ2

SQ4

TiO2Chao Li, Weibo Wang, Xuesong Wang,Baowen Zhang, and Yi Cao


556 Controlled Synthesis of SnO2 Hollow Micro-spheres via a Facile Template-free Hydro-thermal Route

Hollow rutile-like SnO2

microspheres were synthesizedvia a facile template-freehydrothermal method at 160 °Cfor 5−28 h.

Weiping Shao, Zhenghua Wang, YuanguangZhang, Jianhua Cui, Weichao Yu, and YitaiQian

558 Cooperative Reorientation of Dichroic DyesDispersed in Photo-cross-linkable PolymerLiquid Crystal and Application to LinearPolarizer

Linear polarizer was fabricated from aphoto-cross-linkable polymer liquid crystal(PLC) film doped with a dichroic dye basedon a large cooperative photoinduced

with orthogonal polarization direction wasdemonstrated.

reorientation using linearly polarized UVlight. By adjusting the reorientation directionusing a photomask, a patterned polarizer

Nobuhiro Kawatsuki and Keita Fujio

560 Vesicle–Micelle Transition of N-Acyl Phenyl-alaninate Salt in Very Dilute AqueousSolution

O-O

NH

O

O OH

HN

O

acid-soap dimer

ionic(major)

nonionic(minor)

hydrogen bond

π −π interaction

micelle

vesicle

concentrationAkio Ohta, Kumiko Tani-i, Aoi Hoshiba,Tsuyoshi Asakawa, and Shigeyoshi Miyagishi



562 Formation of Single-wall Carbon Nanotubesby Using Porous Glass

100 150 200 250 300 350

Inte

nsity

/ ar

b.un

its

Raman shift / cm−1

Diameter / nm1.60 1.21 1.02 0.800.96

16 nm

10 nm

6 nm

Single-wall carbon nanotubes (SWNTs) were

by controlling the condition of phase separation. By

increases from 6 to 10 nm and 16 nm. On the other

under the same ambient temperature.

prepared by several kinds of porous glass, withdifferent inner pore size, each of which was prepared

applying alcohol CCVD technique, it was found thatthe yield of SWNTs was enhanced when the pore size

hand, the diameter distribution of SWNTs wasinvariant in all porous glasses under investigation,

Yosuke Aoki, Shinzo Suzuki, Shingo Okubo,Hiromichi Kataura, Hiroshi Nagasawa, andYohji Achiba

564 Controlled Synthesis of Novel Flower-shapedBaCrO4 Crystals

Well-defined BaCrO4 flowers arefabricated for the first time via a facilePSMA-mediated precipitation reaction

ambient temperature.of BaCrO4 from aqueous solution at

Shengwei Liu, Jiaguo Yu, Bei Cheng, andQingjie Zhang


566 ANew Sol–Gel Route to Synthesize YPO4:Tbas a Green-emitting Phosphor for the PlasmaDisplay Panels

This work adopts a novel and low-cost sol–gel route to synthesize Tb3+-doped YPO4 as agreen-emitting phosphor for the plasma display panel (PDP). The phosphor obtained by thisroute shows improved luminescence performance in vacuum ultraviolet (VUV) excitation,compared with that obtained by a solid-state reaction.

450 500 550 600 650

sol-gel route

solid state reaction

Inte

nsity

/ a.

u.

Wavelength / nm150 200 250

sol-gel route

solid state reaction

Inte

nsity

/ a.

u.

Wavelength / nm

Weihua Di, Xiaojun Wang, Baojiu Chen, andXiaoxia Zhao

568 Synthesis of MCM-48 Single Crystals withCube Morphology

MCM-48 single crystals with cube morphologyhave been synthesized by using the ternary

rate of the hydrolysis of Si source.surfactant templating route and controlling the

Lingdong Kong, Su Liu, Xuewu Yan, QuanzhiLi, and Heyong He

570 Preparation of Chiral Poly(dipyridylamine).Its Metal Complex-controlled Steric Struc-ture, and Its Light Emitting Properties

N N

N

n

*

coordination sitesfor Cu2+ and Ni2+

A new polyaniline derivative with pyridyl coordinationsites and a chiral side chain was prepared. CD spectrasuggest formation of helix, whose structure wascontrolled by the coordination with metal ions. Thepolymer showed a PL component with a rather long lifetime of 700 ms.

Masaki Horie, Isao Yamaguchi, AkitoshiTanimoto, and Takakazu Yamamoto



572 Dye-sensitized Solar Cells with an ExtremelyThin Liquid Film as the Redox ElectronMediator

Schematic diagram showing the construction of a dye-sensitized solar cell with anextremely thin redox electrolytic film.

Thin liquid film redox mediator

Conducting glass substrate

Graphite layer

Dye-coated TiO2 film

G. R. Asoka Kumara, Shoji Kaneko, AkinoriKonno, Masayuki Okuya, and KirthiTennakone

574 Photochromic Cyan Dyes of Fulgide Deriva-tives in Polymer Film

1.5

1.0

0.5

0.0

Abs

orba

nce

800700600500400300Wavelength / nm

Photochromic polymer films dopedwith 3–4 wt% fulgide derivatives ascyan dyes exhibit high fatigue

UV

VIS

resistances as well as good colorproperty suitable for rewritable colordisplay or printing materials.

Ryoka Matsushima, Yoshiro Ito, Ken-ichiYamashita, Kanako Yamamoto, and YoshiumiKouno

576 Aldol Condensation in Water Using Poly-ethylene Glycol 400

ArCHO Ar'COCH3 CH CHCOAr'Ar+

PEG400NaOH

H2O

O

nn = 1, 0

O

n

ArAr2 ArCHO +

PEG400NaOH

H2OKiyoshi Tanemura, Tsuneo Suzuki, YokoNishida, and Takaaki Horaguchi


578 Synthesis and Structure of a Molecular Met-al Propeller with Three Leaves, a Tetranu-clear Silver(I) Cluster Formed by 2-Mercap-tobenzoate and Triphenylphosphine Ligands A propeller-type Ag4 cluster is

constructed with an axis ofAg4… 3-S1 (C3 axis) and threeµ

µ µleaves of Ag( 3-S)( 2-S)P unitsaround the axis.Ryusuke Noguchi, Akihiro Hara, Akiyoshi

Sugie, Sawako Tanabe, and Kenji Nomiya


580 Highly Aqueous-dispersible Carbon BlackGrafted with SAS and AA Copolymers nCH2 = CH

COOH

+ mCH2 = CH

CH2SO3Na

+CB

CB

COOH CH2SO3 Na

Schematic ReactionTransmission for suspension of modified CB,higher transmission means lower dispersibility

0 40 80 120 160 2000

20

40

60

80

100

AA+SAS-grafted

AA-grafted

ungrafted

Tran

smis

sio

n/%

Time /min

Jian-Yi Zhao and Cheng-Yang Wang



582 Reaction of Dilithiosilane R2SiLi2 and Dili-thiogermane R2GeLi2 (R = SiMetBu2) withMesBCl2 (Mes = 2,4,6-trimethylphenyl):Evidence for the Formation of SilaboreneR2Si=BMes and Germaborene R2Ge=BMes

MesBCl2E

tBu2MeSi SiMe tBu2

Li Li

E = Si , Ge

BEtBu2MeSi

tBu2MeSiMes

O

BEO

tBu2MeSi

tBu2MeSiMes

Norio Nakata, Rika Izumi, Vladimir Ya. Lee,Masaaki Ichinohe, and Akira Sekiguchi

584 Catalyst-free Gas-phase Epoxidation ofAlkenes

The epoxidation of a series of alkenes (butadiene, styrene, cyclohexene, allyl acetate, methylmethacrylate, and allyl alcohol) in the gas phase in the absence of a catalyst is described.

(NO2)O3 + NO2 N(V)-oxide + O2

R3

R2

R4

R1

R3

R2

R4

R1

ON(V)-oxide + + xNO2 (2)

(1)

selectivity to the epoxide up to 97%Torsten Berndt and Olaf Boge

586 Excess Oxygen in 12CaO.7Al2O3 Studied byThermogravimetric Analysis

Katsuro Hayashi, Masahiro Hirano, and HideoHosono

588 Lewis Base-catalyzed [2,3]-Wittig Rear-rangement of Silyl Enolates Generated from�-Allyloxy Ketones

DMF, rt, 1 h

OSiMe3

OO

OHH+

LiN

O

93% Yield

(20 mol%)

Yoshinori Sato, Hidehiko Fujisawa, andTeruaki Mukaiyama

590 Hexagonal Ring Submicro- and Nanocrystalsof a La–Hexacyanoferrate CoordinationPolymer

200 nm

Hexagonal disk crystals of a La–hexacyanoferrate coordination polymerwere obtained by reversed micelletechnique. The {001} surface capping ofthe surfactants leads to the hexagonaldisk shape evolution with the completelydeveloped {001} surface. The hexagonaldisks are changed into hexagonal ringsthrough spontaneous and anisotropicsurface etching along the [001] directionfrom both sides of the hexagonal disk.

Nobuyuki Kondo, Masato Kurihara, MamiYamada, Mikio Miyake, Masahiko Nishijima,Tetsu Ohsuna, Fujio Mizukami, and MasatomiSakamoto



592 Preparation, Characterization, and Electro-luminescence Characteristics of �-Diimine-type Platinum(II) Complexes with Perfluori-nated Phenyl Groups as Ligands

Jun-ichi Nishida, Akihiro Maruyama, TakeshiIwata, and Yoshiro Yamashita


594 Chlorotrimethylsilane as a Mild and Effec-tive Source of Acid Catalyst in ReductiveBenzylation

R OHTMSCl R OTMS

CHOCH OR

CH2 OR

TMSOHEt3SiH

+

HCl+ Cl-

Minoru Izumi and Koichi Fukase

596 Control of Pore Size in Mesoporous Silicaby Incremental Surface Modification UsingTetramethyl Orthosilicate

Si Si Si

O OO O

OHOH

MeO–Si–OMe

OMe

OMe

Si Si Si

O OO O

OO

Si Si Si

O OO O

OO

MeO–Si–OMe

MeO

Si

OMe

OMe

MeO

Si

HO

Si

OH

OOO

TMOS H2ORyohei Ishimaru, Yusuke Shibasaki, MichikazuHara, Mitsuru Ueda, Kazunari Domen, andJunko N. Kondo

598 White-emitting Long-lasting PhosphorSr2SiO4:Dy

3þA white-emitting afterglowphosphor Sr2(1-x)Dy2xSiO4 is reportedin this letter. Long-lastingphosphorescence from Dy3+ wasobserved with the naked eye formore than 1 h in the dark clearlyeven after the short UV light hasbeen removed.

400 500 600 700

Phosphorescence

For 10 min

For 5 min

For 2 min

Inte

nsity

/a.u

.

Wavelength/nmJinyong Kuang and Yingliang Liu

600 Fabrication of Ferroelectric Self-assembledFluorinated Polyether Monolayer on Hydro-gen-terminated Si(111) Surface

Takashi Okano, Hirofumi Inari, TakahiroIshizaki, Nagahiro Saito, Wataru Sakamoto,and Osamu Takai



602 Hydrothermal Synthesis and Structure ofZero-dimensional Organic–inorganic Perov-skites

200 250 300 350 400 450 500 550 600

2-D0-D

Abs

orba

nce

/ a. u

.

Wavelength / nm 0-D

Yuko Takeoka, Keisuke Asai, MasahiroRikukawa, and Kohei Sanui

604 Lewis Base-catalyzed DiastereoselectiveStrecker-type Reaction between Trimethyl-silyl Cyanide and Chiral Sulfinimines

Me3SiCNDMF−THF (2:1)

−78 °C

H+N

Hi-Pr

Sp-Tol HN

CNi-Pr

Sp-Tol

+(1.2 equiv.)

1

AcONn-Bu4 (5 mol%)

quant.

2 (Ss,R)

82% d.e.

O O

Eiki Takahashi, Hidehiko Fujisawa, ToshiharuYanai, and Teruaki Mukaiyama

606 A New and Facile Route for the Synthesisof Thiocarbamates from Aniline, CarbonMonoxide, and Thiols Mediated by Selenium

NH2 + RSHSe COEt3N

NHCOSR ++ + H2Se

H2Se 1/2 O2 H2O++ Se

Xiaopeng Zhang and Shiwei Lu


608 Optically Transparent Thin Film of LayeredNiobate (K4Nb6O17) Intercalated withTris(2,20-bipyridyl)ruthenium(II)

Optically Transparent [Ru(bpy)32+]xK4-2xNb6O17 Thin Film

Zhiwei Tong, Shinsuke Takagi, HiroshiTachibana, Katsuhiko Takagi, and Haruo Inoue

610 Structural Control of Mesoporous Silica by aBicontinuous Microemulsion-aided Process

OilWater

Mesoporous silicaBicontinuous microemulsion

Sol-gel reaction Mesopores

Silica wall

Isamu Moriguchi, Yuki Shono, HiromiTachikawa, Hirotoshi Yamada, Tetsuichi Kudo,Yasutake Teraoka, and Taisei Nishimi



612 Crystal Engineering with [Mo36O112-(H2O)16]

8� Anion as Nanosized BuildingBlock

Kazuo Eda and Yuichi Iriki


614 Lithium Acetate-catalyzed Crossed AldolReaction between Aldehydes and Trimethyl-silyl Enolates Generated from Other Alde-hydes

90 − 91% yield

H

OSiMe3

Ar H

O

DMF or DMF−H2O

NaBH4

Ar H

Me3SiO O

Ar OH

HO

+

(1.4 equiv.)

AcOLi (10 mol%)

Ar = 4-NCC6H4

1N HCl aq

rt.

−45 °C

Yoshikazu Kawano, Hidehiko Fujisawa, andTeruaki Mukaiyama

616 Preparation of Visible Light-responsive TiO2

Thin Film Photocatalysts by an RF Magne-tron Sputtering Deposition Method andTheir Photocatalytic Reactivity

UV−vis spectra of TiO2 thin films prepared on quartzsubstrates by a radio-frequency magnetron sputteringdeposition method at various substrate temperatures.

100

0

50

200 400 600 800

Wavelength / nm

Tran

smitt

ance

/ %

473K

673K

873K

Visible light-responsive TiO2 (Vis-TiO2) thin

the O/Ti ratio from surface (O/Ti = 2.00)

solution under visible light irradiation.

films were successfully developed by aradio-frequency (RF) magnetron sputteringdeposition method. These Vis-TiO2 thinfilms exhibited a declined composition of

to bottom (O/Ti = 1.93), enabling theabsorption of visible light. Pt-loaded Vis-TiO2

was, thus, found to decompose waterinvolving methanol or a 0.05 M silver nitrate

Masaaki Kitano, Masato Takeuchi, MasayaMatsuoka, John M. Thomas, and MasakazuAnpo

618 Host to Guest Energy Transfer in a Self-assembled Supramolecular Nanocage Ob-served by Picosecond Fluorescence Quench-ing

acridineLPd 46 ⊃Haruko Hosoi, Shoichi Yamaguchi, and TaheiTahara

620 Structure and Magnetic Properties of a Hon-eycomb-like Copper(II) Complex Containing4-Aminopyrimidine and Methoxide Bridges

Keita Osanai, Takayuki Ishida, and TakashiNogami


Documents

Chemistry Letters...464 Selective Extraction of Endohedral Metallofullerenes Using a Mixed Solvent of Triethylamine and Acetone A mixed solvent of triethylamine and acetone was used