chemistry letters · 2013-02-05 · 2 fixation with aziridine to 2-oxazolidinone the hybrid...

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

Vol.34 No.1 CMLTAGJanuary, 2005 ISSN 0366-7022

Copyright � 2005 The Chemical Society of Japan

Highlight Review

2 A Key Role of Orbital Interaction in theMain Group Element-containing �-ElectronSystems

Si

silole

B

dibenzoborole

Si

Si

bis-silicon-bridgedstilbene

R' R'

R R

R'

R'R'

R' R'

R R

R

R

Shigehiro Yamaguchi and Kohei Tamao

Various types of main group element-containing �-electron systems have been synthesized using silole, dibenzoborole, or bis-silicon-bridged stilbeneas the key building units. In these �-electron systems, the orbital interaction between the main group element moiety and the �-conjugated framework, suchas p�–�* and �*–�* conjugation, plays a crucial role in determining their characteristic electronic structures and makes them promising materials for appli-cations in organic electronics and optoelectronics.

8 Mesoscopic Solar Cells for Electricity andHydrogen Production from Sunlight

I3-

3I-

TiO2

3I-/I3-

hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννννν

N

NN

N

NN N

Ru

N

OHOO

OO

C

CC

O

OHO

S

SS

e-

e-

hhννννννννIon Diffusion

DyeEVB

ECB

S+/S

S+/S*

Michael Gratzel

The quality of human life depends to a large degree on the availability of energy sources. The present annual worldwide energy consumption has alreadyattained a level of over 400 exajoules and is expected to further augment steeply from the increase in world population and the rising demand of energy in thedeveloping countries. This implies enhanced depletion of fossil fuel reserves leading to further aggravation of the environmental pollution. Quality of life onearth is threatened unless renewable energy resources can be developed in the near future. Chemistry is expected to make important contributions to identifyenvironmentally friendly solutions of the energy problem. One attractive strategy discussed in this article is the development of systems that mimic naturalphotosynthesis in the conversion solar energy. The task to be accomplished by these systems is to harvest sunlight and convert it to electricity or drive an uphillchemical reaction. Learning from the concepts used by green plants, we have developed a molecular photovoltaic device whose overall efficiency for solarenergy conversion to electricity has already attained 11%. The system is based on the sensitization of nanocrystalline oxide films by charge-transfer sensitizers.The underlying fundamental processes of light trapping by the sensitizer, heterogeneous electron transfer from the electronically excited chromophore into theconduction band of the semiconductor oxide and the percolative migration of the injected electrons through the mesoporous film to the collector electrode, willbe described below in detail. The low cost and ease of production of the new cell should benefit large scale applications. These systems will undoubtedlypromote the acceptance of renewable energy technologies, not least by setting new standards of convenience and economy. The nanocrystalline semiconductorjunctions developed first for dye sensitized solar cells have meanwhile found a realm of other applications ranging from electrochromic and electroluminescentdisplays to high power lithium insertion batteries. They are also used in tandem cells for the cleavage of water into hydrogen and oxygen by sunlight.

C-2 Chemistry Letters Vol.34, No.1 (2005)

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

Letter

14 ANew Hydrothermal Route to Prism-shapedCuSeO3.2H2O Single Crystals Prism-shaped CuSeO3⋅2H2O

single crystals with sizes of0.64–0.77 × 0.45–0.67 × 0.26–0.33 mm were successfullysynthesized via a newhydrothermal method in aqueousammonia at 180 ˚C. The doublecrystal X-ray diffraction rockingcurve shows that the singlecrystals have high quality.

Jianhua Cui, Fan Guo, and Xinzheng Liu

16 An Efficient Dye-sensitized Photoelectro-chemical Solar Cell Made from CaCO3-coated TiO2 Nanoporous Film

A simple approach for the synthesisof an ultrathin over layer of CaCO3

on TiO2 is reported.Photosensitization of resultant

(thiocyanato)-N,N′-bis(4-carboxylato-4′-carboxylic acid-2,2′-bipyridine)

film by tetrabutylammonium cis-di

ruthenate(II) achieved powerconversion efficiency over 9.3%under illumination of AM 1.5simulated sunlight (95mW cm-2).

0

1

2

3

4

5

0 200 400 600 800 1000

Voltage/mV

Cur

rent

Den

sity

/mA

with thin layer

without thin layer

Nobuhiro Okada, Subbian Karuppuchamy, andMasaaki Kurihara

18 Coordination of a Water Molecule to aSquare-pyramidal N2S3-type Co(III) Com-plex Directed to an Active Site of NitrileHydratase

A novel square-pyramidal N2S3-type Co(III) complex with a vacant site was synthesized as an activecenter model of nitrile hydratase. The complex showed a peculiar coordination only for a water molecule.although not for the other organic solvents.

Co1 N2

O4O5

O6S1O1

O2O3

N1

S2

S3

OH2

Co1 N2

O4O5

O6S1O1

O2O3

N1

S2

S3

in aqueous solution

in organic solvents

Tomohiro Ozawa, Tomohiro Ikeda, TakumaYano, Hidekazu Arii, Syuhei Yamaguchi,Yasuhiro Funahashi, Koichiro Jitsukawa, andHideki Masuda

20 Single Crystal Ni5Zn21 Nanowire ArraysFabricated by Electrodeposition in AnodicAlumina Membranes

Chong Jia, Weifeng Liu, Bei Zhang, ChuanguiJin, Lianzeng Yao, Weili Cai, and Xiaoguang Li

22 Chlorophyll Chemiluminescence Emittedby Chlorin Ring Cleavage with Acetonitrileand Hydrogen Peroxide

CH3CN, OH-

H2O2

Mg

N

NN

O

C2H5

CH=CH2

C

H3C

H3C

H2C

H2C

COC20H39O

OOCH3

CH3α

γ

βδ

85

11

4

3

10

7 6

12

2

1

9

14

13

15

1716

18

6420Time/min

6420Time/min

Decompositionproducts

Chlorophyll a

+ hv

CL signal

18 ng/mLChlorophyll a

Blank

N

Toshimasa Nagoshi and Shukuro Igarashi

Chemistry Letters Vol.34, No.1 (2005) C-3


24 Preparation of Fast Proton-Conducting ZincMetaphosphate Hydrogel and Its PotentialApplication to Electric Double-layer Capaci-tors

-5

0

5

0 1

Cur

rent

/ µA

Voltage / V

CPZP

A

hydration

low self-discharge rate and a fast charge/discharge capability,

as

window

hydrogel, ZP: zinc metaphosphate hydrogel).

0.5

novel zinc metaphosphate hydrogel, prepared via

of zinc metaphosphate glass powders, exhibited a

well as an electrochemical stability over potentialthe

from 0 to 1 V (CP: calcium metaphosphate

Yusuke Daiko, Takafumi Akamatsu, ToshihiroKasuga, and Masayuki Nogami

26 Additional RNA–Protein Interactions Facili-tate in vitro Selection by Ribosome Display

Additional RNA–peptide interactions facilitate selections based on ribosomedisplay. The noncovalent but strong interactions exploited here provide a simpleand effective strategy for selection of functional proteins from large libraries.

Atsushi Inoue, Shinya Y. Sawata, SatoshiFujita, and Kazunari Taira

28 A One-pot Synthesis of Terminal Alkynesfrom anti-3-Aryl-2,3-dibromopropanoicAcids under Microwave Irradiation

ArCO2H

Br

Br

Et3N /DMF DBUArBr

Ar

1 2 3

Yield:87-99%

MW0.5-1.0 min

MW1.0 min

Chunxiang Kuang, Hisanori Senboku, andMasao Tokuda

30 Synthesis and Formation Mechanism ofSilver Nanowires by a Templateless andSeedless Method

Silver nanowires with lengths up to ≈ 10 µm

nontemplate, seedless method in theabsence of a surfactant or polymer to

addition of external seeding nanocrystallites.

studies provided a clear evidence for the

can be obtained in large quantities via

control nanoparticle evolution, and without

The transmission electron microscopy

formation process of silver nanowires.Qitao Zhao, Jianrong Qiu, Chongjun Zhao,Lisong Hou, and Congshan Zhu

32 Monooxygen-containing Analogue ofBDH-TTP, DHOT-TTP [2-(1,3-Dithiolan-2-ylidene)-5-(1,3-oxathiolan-2-ylidene)-1,3,4,6-tetrathiapentalene], and Its Metallic AuI2Salt

Donor arrangement in the metallic α-(DHOT-TTP)2(AuI2)0.87 salt.

S

SS

S S

SO

SDHOT-TTP

Jun-ichi Yamada, Ken-ichi Kunigita, HirokiAkutsu, Shin’ichi Nakatsuji, and KoichiKikuchi



34 Reductive Adsorption of Gold(III) by Cross-linked Lignophenol

Adsorption of Au(III) ions on Crosslinked lignophenol isaccompanied by the formation of elemental gold particles.

Durga Parajuli, Katsutoshi Inoue, MasayukiKuriyama, Masamitsu Funaoka, and KenjiroMakino

36 The Intramolecular Electron Transfer be-tween the Type 1 Cu and the Type 2 Cu ina Mutant of Hyphomicrobium Nitrite Reduc-tase

Shinnichiro Suzuki, Takehiko Maetani, KazuyaYamaguchi, Kazuo Kobayashi, and SeiichiTagawa

38 Change in Conformation of J-aggregate 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin(H2TPPS) by Addition of Nonionic Surfac-tant (Triton X-100)

Drastic conformational change of J-aggregate of (H4TPPS)n (a)was observed by addition of nonionic surfactant (Triton X-100)(b).

-50-40-30-20-10

01020304050

300 350 400 450 500 550 600

bba

a

Nattakarn Wangfuengkanagul and MasaakiTabata

40 Schizophyllan Can Act as a One-dimensionalHost to Construct Poly(diacetylene) Nanofib-ers

Teruaki Hasegawa, Shuichi Haraguchi,Munenori Numata, Tomohisa Fujisawa, ChunLi, Kenji Kaneko, Kazuo Sakurai, and SeijiShinkai

42 Alkali-guided Synthesis of Polyaniline Hol-low Microspheres

Polyaniline hollow microspheres with conductivity of 9.7 × 10− 3 S/cm weresynthesized with alkali-guided method. The alkali (NaOH)-guided oxidationof aniline with ammonium peroxydisulfate as well as doping sulfate anion

300 400 500 600 700 8000.0

0.5

1.0

1.5

Abs

orpt

ion

Wavelength/nm

AB

onto polyaniline.

Xing Wang, Na Liu, Xue Yan, Wanjin Zhang,and Yen Wei



44 Monooxomolybdenum(IV) Complex withExtremely Bulky Dithiolate Ligands — Ac-celeration of O-atom Transfer by DistortedSquare Pyramidal Conformation

Koji Baba, Taka-aki Okamura, HitoshiYamamoto, Tetsuo Yamamoto, Mitsuo Ohama,and Norikazu Ueyama

46 Helical Aggregate of Oleic Acid and ItsDynamics in Water at pH 8

Masako Ishimaru, Taro Toyota, KatsutoTakakura, Tadashi Sugawara, and YokoSugawara

48 Effect of Sm Addition on Ni–MgO Catalystsfor the Synthesis of Carbon Nanotubes viaMethane Decomposition

Ke Li, Gongxuan Lu, Weiping Wang,Jianzhong Li, and Jianfu Liu

50 A Thermal Reduction–Nitridation Route toNanocrystalline Chromium Nitride (CrN)

400 OC CrCl3 + NH4Cl + 4 Na CrN + 4 NaCl + 2 H2

Nanocrystalline chromium nitride (CrN) was successfully synthesized

in an autoclave at 400 °C.

Jianhua Ma and Yihong Du

52 A Room Temperature Self-sacrificingTemplate Route to Ag2Te Fibers

Ag2Te fibers are successfullysynthesized by using Te fibersas self-sacrificing template inan aqueous solution at roomtemperature.

Li Mu, Junxi Wan, Dekun Ma, Rui Zhang,Weichao Yu, and Yitai Qian



54 Water Splitting into H2 and O2 overCs2Nb4O11 Photocatalyst

Crystal structure of Cs2Nb4O11 Photocatalytic water splitting overpretreated NiO (0.2 wt %)/Cs2Nb4O11

0

500

1000

1500

2000

2500

0 2 4 6 8 10 12

Am

ount

s of

pro

duct

s /

µm

ol

Time / h

H2

O2

inner irradiation reaction cell made of Pyrex,400-W high-pressuremercury lamp.

NbO6 NbO4 Cs+

Yugo Miseki, Hideki Kato, and Akihiko Kudo

56 Facile Synthesis of Polycyclic AromaticHydrocarbons via a Trisaryne Equivalent

SiMe3

OTf

SiMe3

OTf

Me3Si

TfO

F

Junnai Ikadai, Hiroto Yoshida, Joji Ohshita, andAtsutaka Kunai

58 Preparation of Spherical Particles withQuartz Single Crystal

Particles contain a small amount of TiO2

and CaO in SiO2

20 30 40

2θ / degree

α -quartz.

0.5µm

Minahiro Okabayashi, Kenji Miyazaki, ToshioKono, Miyoko Tanaka, and Yumio Toda

60 Effective scCO2-ionic Liquid ReactionSystem Based on Symmetric AliphaticAmmonium Salts for the Rapid CO2 Fixationwith Aziridine to 2-Oxazolidinone

The hybrid reaction system composed of supercritical carbon dioxide and roomtemperature ionic liquid based on symmetric tetraalkyl ammonium salts can effectivelypromote the carbon dioxide fixation from aziridine to 2-oxazolidinone in the presence ofiodine in high yield of 98% within 5 min. The TOF value under this condition is 254times larger than that using conventional organic solvent.

NH

Me scCO2-IL

Cat.: I2HN O

O

Me

5 minYield: 98%Select.: 100%

N

R

R

R

R

R = nC8H17

NSO2CF3

SO2CF3

[TOA]+ [TFSI]-

IL =

Hajime Kawanami, Hajime Matsumoto, andYutaka Ikushima

62 Thiocyanate-selective PVC MembraneElectrode Based on Tricoordinate SchiffBase Copper(II) Complex

CH N C

Cu OH3C C

O

O

ON

CH3

CH3

Structures of dimethylaminobenzaldehyde-(o-aminobenzoic acid)copper(II) complex [Cu(II)-DMABABA].

Jian-Yuan Dai, Ya-Qin Chai, Ruo Yuan, Yi-SenZhang, Yan Liu, Xia Zhong, and Dian-PingTang



64 One Pot Synthesis of Photochromic MaleicAnhydride Derivatives O

N

O O O

N

O O

400 nm

>500 nm

Tadatsugu Yamaguchi and Masahiro Irie

66 Enhanced Efficiency and Regioselectivity ofIntramolecular (2�þ 2�) Photocycloaddi-tion of 1-Cyanonaphthalene Derivative UsingMicroreactors

CN

O

NC

O

O

CN

+hν

in out

7 cm

2 cm

Hajime Maeda, Hirofumi Mukae, and KazuhikoMizuno

68 Bis(ethylenedioxy)-1,4,5,8-tetraselenanaph-thalene: The First Example of Tetraselena-naphthalene

O

O Br

Br O

O Se-Li+

Se-Li+ Se

Se Se

Se

O

OO

O

Br

Br

Br

Br

LiCl

HOMO of BEDO-TSeN (HF/6-31G*)

BEDO-TSeN

X-ray structure of BEDO-TSeNRyoji Watanabe, Yoshihiro Miyake, YoshiyukiKuwatani, and Masahiko Iyoda

70 Temperature Dependence on the ActivationEnergy of Dechlorination in ThermalDegradation of Polyvinylchloride

-20

-15

-10

-5

0

1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0

lnk

/min

.-1

1000 / T / K min.-1

400 300 200 100 80130160250

17.1 kJ/mol

116.5 kJ/molin O2

vacuum

Temperature/°C

The activation energy of dechlorination between80 and 280 °C was 116.5 kJ/mol. On the other hand,

When graphite powder, which has a high heat

it was 17.1 kJ/mol over 280 °C. This indicates thatthe dechlorination is controlled by the chemicalreaction between 80 and 280 °C, but is controlled bythe mass transfer and heat trasfer, as well, over 280 °C.

conductivity, was mixed with PVC powder, theapparent rate constant increased up to 1.45 times compared with pure PVC powder. This clearly indicates that the dechlronation is controlled by the heat transfer at temperatures over 280 °C.

Toshiaki Yoshioka, Nobuo Saitoh, andAkitsugu Okuwaki

72 A New Method for the Lactonization of !-Hydroxy Carboxylic Acids with Di-2-thienylCarbonate by the Promotion of DMAP andIodine 2-DTC (1.0 equiv.)

O O

O

SSI2 (2−4 equiv.)

HO OH

O OO

CH3CN, rt, 15 min.

n n toluene reflux

DMAP (0.05 equiv.)(1.0 equiv.)

58−92%

10 h

HO O

O

nS

−CO2 O S

+

O S

+

Yoshiaki Oohashi, Kentarou Fukumoto, andTeruaki Mukaiyama



74 Preparation of Tetrahedral Pt NanoparticlesHaving {111g Facet on Their Surface

0.225 nm

{100} and {111} facets are typical formetal clusters having FCC structure. Inthis paper we report a novel preparationmethod of tetrahedral Pt nanoparticles,whose surface is controlled {111}, byusing a thermosensitive capping polymer[poly(N-ethylacrylamide)].

Akane Miyazaki, Shuichiro Yoshida, YoshioNakano, and Ioan Balint

76 Asymmetric Synthesis of Axially Chiralcis-Arylmethylenebicyclo[3.3.0]octanes Using�-Thio- and �-Selenoorganolithium Com-pounds PhX Li

Ar

X = S, SeAr = Ph, p-TolR = H, Me

(S )-bis(oxazoline) iPrR

R

OO

O

R

R

O

OHOPhX

Ar(S )

endo-(S )

X = S, Ar = Ph:dr >98:2-88:1298-99%ee

R

R

OAr

98%ee

Libo Wang, Shuichi Nakamura, Norio Shibata,and Takeshi Toru

78 Activation of Urea as a Leaving Group inSubstitution Reactions of FormamidineUreas

N NH

HR1 + HN

R2

O

NHR3

OHR4

N NR2

O

NHR3

HR1

R4 NH2

NH2

OHR4

N NR2

O

NHR3

HR4

+ R1 NH2

David D. Dıaz, Warren G. Lewis, and M. G.Finn

80 Selective Extraction of Silver Ion withProton-Switchable Calix[4]arene

Hirotaka Higuchi, Takashi Matsufuji, TatsuyaOshima, Keisuke Ohto, Katsutoshi Inoue,Tsermaa Tsend-Ayush, and Karsten Gloe

82 A Novel Patterning Method of Low-resistivi-ty Metals

Chang-Ho Noh, Hae-Jung Son, Jin-Young Kim,Ok-Chae Hwang, Ki-Yong Song, T. V. Byk,V. G. Sokolov, and Jin-Baek Kim



84 Lewis Base-catalyzed anti-Selective Man-nich-type Reaction between TrimethylsilylEnolates and Aldimines

Ph H

NTs

Ph

OSiMe3

Ph

HN

Ph

OTs

DMF, –45 °C+

H+

quant.anti : syn = 96 : 4

PhCO2Nn-Bu4(10 mol%)

Eiki Takahashi, Hidehiko Fujisawa, andTeruaki Mukaiyama

86 Simplified Synthesis of Cobalt FerriteNanotubes Using Sol–Gel Method

SEM image of cobalt ferrite nanotube arrays.

G. B. Ji, H. L. Su, S. L. Tang, Y. W. Du, andB. L. Xu

88 Lithium Acetate-catalyzed Trifluoromethyl-ation of Carbonyl Compounds with (Tri-fluoromethyl)trimethylsilane

Me

O

O2N

Me

O2N

F3C OSiMe3

Me3SiCF3

(1.2 equiv.)+

AcOLi (5 mol%)

DMF , 0 °C to rt.

1 h95 % yield

Teruaki Mukaiyama, Yoshikazu Kawano, andHidehiko Fujisawa

90 A Novel Gallium/Samarium-mediated Cou-pling of Epoxides with Allyl Halides in Aque-ous Media and Synthesis of Homoallylic Al-cohols O

R

Ga or Sm/Bu4NBr

OHR

1 2X

DMF-H2O

Mukut Gohain and Dipak Prajapati

92 Surfactant-dependent Photoluminescence ofCdTe Nanocrystals in Aqueous Solution

0

10

20

30

40

50

60

70

0.5 1.0 1.5 2.0 2.5 3.0Mole ratio of TGA

PL

eff

icie

ncy

/ %

Green (550nm)Red (640nm)

O

OHHSThioglycolic acid (TGA)

Photoluminescence efficiency

of CdTe nanocrystals prepared

Cd2+ for green- and red-emittingregions.

by aqueous method was

investigated functionaas of

molar ratio of TGA to

Chunliang Li and Norio Murase



94 An Approach towards Nano-size Crystals ofPoly(acrylic acid): Polymerization UsingLayered Double Hydroxides as Template

A new approach has been proposed and was

hydroxides (LDHs) followed by exchange of

shown to be a feasible method to producenanosized polymer crystals poly(acrylic acid) (PAA). The new approachinvolves in situ polymerization of acrylicacid in the interlayers of a layered double

the polymer anion for carbonate. The key isthe use of LDHs as a template.

of

Ge Wang, Fuli Cai, Lichun Si, Zhiqiang Wang,and Xue Duan

96 Sonochemical Synthesis of Inorganic–Organ-ic Hybrid Nanocomposite Based on GoldNanoparticles and Polypyrrole

Polypyrrole

Au

Pyrrole+

NaAuCl4.2H2O Sonication ))))))

100 nm

NaAuCl4.2H2O

solutionAu-NPs Au-NPs/PPy

Jong-Eun Park, Mahito Atobe, and ToshioFuchigami

98 A Highly Selective and Sensitive FluorescentChemosensor for Fe3þ in PhysiologicalAqueous Solution A novel fluorescent chemosensor 1

has been synthesized for sensing Fe3+.The selective fluorescence enhancementwas observed upon binding Fe3+ atphysiological conditions, whereas othermetal ions, such as Li+, Na+, K+, Mg2+,Ca2+, Cu2+, Zn2+, Co2+, Ni2+, Mn2+, Hg2+,and Pb2+ produced no effect.

O O

OO

NO

OO

OO

OO

ON

NH

O

1Jun Hua and Yan-Guang Wang

100 An Improved Approach for Synthesis ofPositively Charged Silver Nanoparticles

The schematic model for Ag NPs capped by CTAB molecules in the solution (A) and dry sample(B) (in TGA process).

Zhenming Sui, Xiao Chen, Luyan Wang,Yongcun Chai, Chunjie Yang, and Jikuan Zhao

102 Copper(II) Triflate Immobilized in[bmim]BF4 Ionic liquid: An Efficient Reac-tion Medium for Michael Addition of �-Ketoesters to Acceptor-activated Alkenes

O

CO2RR2

O

R1

O O

CO2R

1 2 3

+

Cu(OTf)2

[Bmim] BF4, rt

R2

R1

J. S. Yadav, B. V. S. Reddy, Gakul Baishya, andA. Venkat Narsaiah



104 A Helical Supramolecular Polymer Formedby Host–Guest Interactions

Cyclodextrin Derivative Water-solubleHelical Supramolecular PolymerMasahiko Miyauchi and Akira Harada

106 One-pot Synthesis of Substituted Quinolinesby Iridium-catalyzed Three-component Cou-pling Reaction

NH2

HO

R3

R1N R2

R3

R1+ +

[Ir(cod)Cl]2 (5.0 mol %)

DMSO, 90 oC, 17 hR2CHO

Takeyuki Igarashi, Takashi Inada, TadaoSekioka, Takayuki Nakajima, and Isao Shimizu

108 Highly Efficient Ni–Ce–O Mixed OxideCatalysts via Gel-coprecipitation of OxalatePrecursors for Catalytic Combustion ofMethane

1 876542 3

405

410

415

420

425

430

1.0

1.2

1.4

1.6

1.8

2.0

T 50 /

oC

Molar ratio of Ni/Ce

Mic

rost

rain

εN

iO /%

Nan Yi, Yong Cao, Yong-Mei Liu, Wei-LinDai, He-Yong He, and Kang-Nian Fan

110 Lyophilization of Lipase Together with IonicCompounds Generates Highly Enantioselec-tive and Solvent-sensitive Lipase in OrganicSolvents

For lipase-catalyzed esterifications, the E value of lipase lyophilized in the presence of Na2HPO4

varies profoundly from 50 for n-hexane to 500 for isopropyl ether.

Lipase lyophilizedwith Na2HPO4

Native lipase

100

200

300

400

500

1.5 2.5 3.5 4.5Dielectric constant of solvent /ε

E v

alue(R,S)

R-preference

Lipase

Et O CHCH3

CO2H

H

Organic solvent

Et O CCH3

CO2Bu

n-BuOH

Shin-ichi Ueji, Shu-ichi Mori, Hiromi Yumoto,Naomi Hiroshima, and Yasuhito Ebara

112 Fabrication of Silver Nanowires by SelectiveElectroless Plating of DNA Stretched Usingthe LB Method

Yuichi Hashimoto, Yasutaka Matsuo, andKuniharu Ijiro



114 Highly Dispersed Gold Nanowires within thePore Channels of Mesoporous Silica ThinFilms Prepared From Organic–InorganicHybrid Films Functionalized with BasicMoieties

Combined a surface modification scheme with a neutralization reaction, accompanied withreduction precedure, highly dispersed gold nanowires within the pore channels of mesoporous silicafilms were prepared from organic–inorganic hybrid films functionalized with basic moieties.

o

oo

ooo

oo

o

sisi

si

sisi

si

oo

oo

oH

Base

Base

Base

Base

Base

Base

acid

acid

acid

acid

acid

acid

Acid=HAuCl4

Base=RNH2

CalcinationUnder H2

Jinlou Gu, Jianlin Shi, Zile Hua, LiangmingXiong, Lingxia Zhang, and Lei Li

116 Parallel �-sheet as a Novel Template forPolymerization of Diacetylene

The parallel β-sheet motif which is one of the secondary structures of polypeptide wassuccessfully applied as a novel template for polymerization of diacetylene.

Takeshi Mori, Kenji Shimoyama, YouichiFukawa, Keiji Minagawa, and Masami Tanaka

118 A Novel Route to Octahedral In2O3 ParticlesExhibiting Near Band Emission

A novel solvothermal route combined withcalcination was successfully established tosynthesize octahedral In2O3 particles, whichexhibit near band emission. Interesting shapetransformation from amorphous sphere towell-shaped octahedron was found.

Wu Zhang, Zhen Huang, Ting Li, Qun Tang,Dekun Ma, and Yitai Qian

120 One-step Synthesis of Single-crystallineCdSe Nanorods via �-Ray Irradiation

Qingchun Zhao, Wenming Chen, and QingrenZhu

122 Single Crystal Trigonal Selenium NanoplatesConverted from Selenium Nanoparticles

The single crystal trigonal selenium nanoplates

have

the trigonal selenium nanoparticles in a solid–

solution–solid process under assistance of

ethylenediamine. 500nm500nm

50nm

been fromdirectlypreparedsuccessfully

Haoyong Yin, Zhude Xu, Huahui Bao, JingyiBai, and Yifan Zheng

chemistry letters · 2013-02-05 · 2 fixation with aziridine to 2-oxazolidinone the hybrid...

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