chemistry letters · hideaki suzuki, hatsumi mori, jun-ichi 1,2-da yamaura, masaki matsuda,...

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

Vol.36 No.3 CMLTAGMarch, 2007 ISSN 0366-7022

Copyright � 2007 The Chemical Society of Japan

348 Applications of Single-site PhotocatalystsImplanted within the Silica Matrixes ofZeolite and Mesoporous Silica

Single-sitephotocatalyst

Charge transferexcited state

UV lightirradiation

Mn+

O2-O2-

O2-

O2-

M(n-1)+

O2-O2-

O2-

O-

Ultra-fine semiconductingphotocatalyst withquantum-size effect

UV lightirradiation Zeolite

Mesoporous silicaHiromi Yamashita and Kohsuke Mori

The tetrahedrally coordinated metal oxide (titanium, vanadium, chromium, and molybdenum oxides) moieties canbe implanted and isolated in the silica matrixes of microporous zeolite and mesoporous silica materials and named as‘‘single-site photocatalysts.’’ Under UV-light irradiation these single-site photocatalysts form the charge-transfer excitedstate, i.e., the excited electron–hole pair state which localizes quite near to each other as compared to the electron andhole produced in semiconducting materials, plays a significant role in various photocatalytic reactions. These single-sitephotocatalysts not only can promote photocatalytic reactions but also can be utilized to synthesis of functional materials.

Highlight Review

Letter

354 Vapor Switching of Photochromism of Meth-ylenebis{N-(3,5-di-tert-butylsalicylidene)ani-line} Crystals

NH

O

OHH2C

tBu

tBu standing in the atmosphere

exposure to CH3OH vapor orrecrystallization from CH3OH

UV light irradiation

standing in the dark

Methanol adduct

Photochrome2

Yellow Orange

Masatsugu Taneda, Hiroyuki Koyama, andToshio Kawato

C-44 Chemistry Letters Vol.36, No.3 (2007)

Copyright � 2007 The Chemical Society of Japan http://www.csj.jp/journals/chem-lett/

356 Inorganic–Organic Hybrid with 3D Supra-molecular Channel Assembled through C–H��O Interactions Based on the Decavana-date

Taohai Li, Jian Lu, Shuiying Gao, Feng Li, andRong Cao

Electronic Supporting Information

358 Measurement of DNA Mutations Caused bySeconds-period UV-irradiation

Non-sequencing, direct monitoring of DNA mutations.

In panel c, linear increase of DNA mutation (∆PaSS) can be observed depending on the UVdosage for three different states of in vivo (red) or in vitro (black) (close/far UV irradiation) DNA.Masae Futakami and Koichi Nishigaki

360 Fluorescent Calix[4]arene-appended SilicaNanotubes as Selective Chemosensor andAdsorbent for Pb2þ Ion

Tae Ho Kim, Jong Hwa Jung, Jung Kyu Choi,Yun Hee Choi, Soo Jin Lee, Moo Lyong Seo,and Jong Seung Kim


362 Dehydrogenative Condensation of (o-Boryl-phenyl)hydrosilane with Alcohols andAmines

Si MeMe

H

BMes Mes

δ–

δ+

R OH

SiMe2H

BMes2

ROH (×1.1)

THFroom temp.

SiMe2OR

BMes2– H2

Intramolecular electrophilicactivation of Si–H bond byortho boryl group

Atsushi Kawachi, Masatoshi Zaima, AtsushiTani, and Yohsuke Yamamoto


364 Amphiphilic Pyranines: ChromophoreWrapped in a Hydrophobic Alkyl Chainand Micelle Formation Induced by Complex-ation with Methylviologen

A critical micelle concentration of the amphiphilic pyranine POC16 was reduced ca. five ordersof magnitude by the addition of MV2+.

MV2+

POC16 [POC16 · MV2+]micellesRyo Sasaki and Shigeru Murata


Chemistry Letters Vol.36, No.3 (2007) C-45


366 Reduction of �,�-Unsaturated Ketoneswith Diphenylsilanes Bearing Several Sub-stituents on Their Phenyl Moiety Catalyzedby Rhodium–Phosphine Complexes

PhH2SiOSiHPhArOSiHPh2 O

1,2-Reduction 1,4-Reduction

O

H2SiPh2

Rh–Phosphine Rh–PhosphineDaisuke Imao, Miyuki Hayama, KohtaIshikawa, Tetsuo Ohta, and Yoshihiko Ito


368 Synthesis of Tricyclo[3.1.0.02;4]hexasilaneand Its Photochemical Isomerization to Tri-cyclo[2.2.0.02;5]hexasilane

SiR

R2SiRSi

RSi

SiR2SiR

R2SiSiR

RSi

RSi

SiR

SiR2hν

1 2R = t-BuMe2SiTakeaki Iwamoto, Kei Uchiyama, ChizukoKabuto, and Mitsuo Kira


370 Growth of �-Perylene Crystal

100 µm

ββ -phase

100 µm

α-phase

Perylenein Toluene

Slow Cooling

Rapid Cooling

Tomoaki Yago, Yoshiaki Tamaki, AkihiroFurube, and Ryuzi Katoh

372 Reversible Luminescence Modulation inPhotochromic Europium(III) Complex Hav-ing Triangle Terthiazole Ligands

Tetsuya Nakagawa, Kazuhiko Atsumi, TakuyaNakashima, Yasuchika Hasegawa, andTsuyoshi Kawai

374 Blue Luminescence from a Thin Film ofthe AlQ3/SiO2 Organic–Inorganic HybridMaterial

Hong-Yu Zeng, Wei-Min Huang, and Jian-LinShi




376 Efficient Conversion of NO2 into N2 and O2

in N2 or into N2O5 in Air by 172-nm Xe2Excimer Lamp at Atmospheric Pressure

172 nm Xe2 excimer lamp photolysis of NO2

in N2 and air at 1 atm

NO2

Major removal processes of NO2

NO3

N2 + O2

+ O3

(in N2)

N2O5

+ H2O HNO3(in air)

Masaharu Tsuji, Masashi Kawahara, MakotoSenda, and Kenji Noda


378 Scandium Ion-accelerated Scavenging Reac-tion of Cumylperoxyl Radical by a CyclicNitroxyl Radical via Electron Transfer

N

CONH2

O •

Sc

N

CONH2

O

CMe2OO

CMe2OO −

•

Sc

CP

+

++

3+

ElectronTransfer

3+

Ikuo Nakanishi, Kumiko Kawaguchi, KeiOhkubo, Tomonori Kawashima, SushmaManda, Hideko Kanazawa, Keizo Takeshita,Kazunori Anzai, Toshihiko Ozawa, ShunichiFukuzumi, and Nobuo Ikota


380 Noble Orientation Change with Tempera-ture in Nematic Liquid Crystalline Mixtures

The liquid crystalline molecules changed from being homeogeneously aligned with the glassplates to being homeotropically aligned perpendicular to the glass plates.

Yoshio Aoki, Takeyoshi Watabe, TakujiHirose, and Ken Ishikawa

382 Microwave-assisted Preparation of Bi2Te3Hollow Nanospheres

50 nm

Bi2Te3 hollow nanospheres with diameters of

50−100 nm have been successfully prepared

of water and ethylene glycol by a simple microwave

heating method at 150 °C for 30 min.

using TeO2, Bi(NO3)3, and HNO3 in mixed solvents

Ya Jiang, Ying-Jie Zhu, and Li-Dong Chen

384 Zn1�xMgxO Nanoparticles: SolvothermalSynthesis and Solid Solubility

Xiaoqing Qiu, Yanfeng Xue, Guangshe Li, andLiping Li




386 Photochemical and Redox Switching in aRing-closed Isomer of Thioindigo-extendedQuinone

S

S

t Bu

Ot Bu

O t Bu

t Bu

S

S

O

O

SS

O

t Bu

t BuO

t Bu

t Buhν

dark

+ 2 e

- 2 e

t Bu

t Bu

t Bu

t Bu

Hiroyuki Kurata, Sang Kim, KouzouMatsumoto, Takeshi Kawase, and Masaji Oda

388 DNA Conformational Switching by Use of anIntercalator and Its Receptor

Z-DNAZ-DNA

0 0.5 1.0

-8-6-4-20246

0 1 2 3C

D 2

95nm

/ mde

g

T/B C/T

+C8AS

B-DNA

+Tilorone

Tomoki Nishimura, Yoichi Takeda, NaohikoShimada, and Kazuo Sakurai


390 A New Superlattice of CyclohexanethiolSelf-assembled Monolayers on Au(111)Formed at a Low Solution Temperature

High-resolution scanning tunneling microscopy (STM) imaging revealed thatcyclohexanethiols (CHTs) on Au(111) form high-density self-assembled monolayers (SAMs)with a new (5 × 2√3)R35° superlattice at −20 °C. (a) High-resolution STM image and (b)structural model of the proposed superlattice for CHT SAMs on Au(111).

Seungwook Kwon, Youngdo Jeong, YoungilLee, and Jaegeun Noh

392 Morphological Control to Kneed GoldNanowire through Initial Mixing in PolyolProcess

Preheated ethyleneglycol

Formation of nucleus

Addition of portion of HAuCl4 and PVP solutions

Dropping of the residual solutions

Adequate control of droppingrate and reaction time

Morphological change to kneed nanowires

Morphological evolution of kneed gold nanowire

Evolution of nanorod or nanowire

Jong-Hee Lee, Kai Kamada, Naoya Enomoto,and Junichi Hojo


394 Photoinduced J-Aggregation of Photochro-mic Spironaphthooxazine in a Glass FormingOrganic Mixture

400 500 600 700

0.0

0.5

1.0

1.0 x 10-2 M25 K77 K150 K200 K

Abs

orba

nce

Wavelength/nm

400 500 600 700

0.0

0.2

0.4

0.6

1.0 x 10-5 M 200 K 150 K 77 K 25 K

Abs

orba

nce

Wavelength/nm

Tae-Wook Kang and In-Ja Lee




396 Microchip Electrophoresis for Detectionof Circle-to-Circle Amplification Productstowards Sensitive and Rapid DNA Analysis dsDNA C2CA

product

Klenow

PMMA Microchip

Microchipelectrophoresis

detection 3’ 5’

Padlock probe

Laili Mahmoudian, Jonas Melin, MohamadReza Mohamadi, Keiko Yamada, Michio Ohta,Noritada Kaji, Manabu Tokeshi, Mats Nilsson,and Yoshinobu Baba


398 Solution-phase 13CNMR Spectroscopy ofDetonation Nanodiamond

An aqueous colloidal solution of detonation nanodiamod exhibited broad resonance of diamodcarbons on the 13C NMR spectrum.

ppm

Naoki Komatsu, Naoki Kadota, TakahideKimura, and Eiji Osawa


400 DFT/Ab initio Study on the Pathways for theReaction of CH3SH with NO3 Radical

CH3SH

NO3

+ [CH3SH-ONO2]

H

H

O

O

H

N

H

O

S

CH3S

HNO3

+Tadafumi Uchimaru, Ahmed M. El-Nahas,Masaaki Sugie, Kazuaki Tokuhashi, and AkiraSekiya


402 Proton Migration in –N��H��O– Hydrogen-bonded Complex of (Chloranilic Acid)(1,2-Diazine)2 Studied by Dielectric Responseand Infrared Absorption Spectra

14

12

10

8

6

4

bε

3002001000Temperature / K

O

O O H

Cl

Cl

H O

N

N

N

N

CA1,2-DAHideaki Suzuki, Hatsumi Mori, Jun-ichi

Yamaura, Masaki Matsuda, Hiroyuki Tajima,and Tomoyuki Mochida

404 Enantiomeric Resolution of Chiral 1,8-An-thrylene Cyclic Tetramers with Acetyleneand Diacetylene Linkers

Enantiomers of the D2 symmetric macrocyclic compound consisting of anthracene andacetylene units were separated by spontaneous resolution.

Michio Goichi, Shingo Yamasaki, HiroakiMiyahara, Kan Wakamatsu, Haruo Akashi,and Shinji Toyota




406 Direct Electron Transfer of HemoglobinMolecules on Bare ITO Electrodes

Direct electron transfer of Hb molecules was foundat bare ITO electrodes by cyclic voltammetry. The

molecules on ITO electrode surface were electroactiveobtained results suggest that directly adsorbed Hb

species.

Yusuke Ayato, Takashi Itahashi, and NaokiMatsuda

408 An Efficient and Highly StereoselectiveMethod to Synthesize 3-(1-Hydroxyalkyl)-pyrrolidinone Ph N

OH OBut

PhSe hν, CH2Cl2

H2O2

THFPh N

OBut

H

+

3a 5a 6a

Ph

OH

N

OBut

H

4a

Ph N

OBut

H

H OH H OH

HHH

SePh

82%

Et2AlCl

12 1:Gao-Yan Lian, Jin-Di Yu, Hai-Feng Yang,Feng Lin, Qiang Gao, and Dan-Wei Zhang


410 Dibarium Magnesium Diphosphate YellowPhosphor Applied in InGaN-based LEDs

300 400 500 600 700 800

588 nm

373 nm

Rel

ativ

e In

tens

ity /

arb

unit

Wavelength / nm

A yellow phosphor Ba2Mg(PO4)2:Eu2+ was synthesized and bright yellow LED was fabricatedthrough combining an NUV InGaN chip ( em = 373 nm) with the phosphor. The results indicatethat Ba2Mg(PO4)2:Eu2+ is a good candidate phosphor applied in white LEDs.

λ

Zhanchao Wu, Menglian Gong, Jianxin Shi,Gang Wang, and Qiang Su

412 Unique Effects of 2,3,5,6,7,8-Hexasilabicyclo-[2.2.2]octan-1-yl Moiety on PhotophysicalProperties of �-Conjugated System

π-conjugated systemSi Si

SiSi

SiSi

λmaxε

f

red shift upup

π-conjugated system

Si = SiMe2

Φ

Masaki Shimizu, Tomoaki Kawaguchi,Katsunari Oda, and Tamejiro Hiyama

414 Preparation, Structural Characterization,and Reactivities of (Digermanyl)lithium.Its Application to the Synthesis of Bis(1,1-diphenyl-2,2,2-trimethyldigermanyl)plati-num(II)

Me3GeGeR2Ht-BuLi/THF

Me3GeGeR2LiR = Me (1a); Ph (1b)

cis-PtCl2(PMe2Ph)2 + 2 1b trans-Pt(Me3GeGePh2)2(PMe2Ph)22

Kunio Mochida, Satoshi Ogawa, Noriaki Naito,Abd El-Al Gaber, Yoko Usui, and MasatoNanjo




416 Fabrication of Superhydrophobic Surface onMagnesium Alloy

A stable superhydrophobic surface on

magnesium alloy substrate, with a water

contact angle of about 155 ± 1.6° and a

effective method.

sliding angle of less than 8°, showing

good superhydrophobicity, was

fabricated by means of a facile and cost-Jun Liang, Zhiguang Guo, Jian Fang, andJingcheng Hao


418 One-pot Synthesis of Main Chain-type Poly-rotaxane Containing Cyclodextrin Wheels

One-Pot

Polyrotaxane possessing cyclodextrin wheels was prepared in one pot through the initialthreading complexation of polytetrahydrofuran axle and -cyclodextrin wheel followed by theend-capping reaction of the terminal amino groups of the axle with a bulky isocyanate in water.

α

Takayuki Arai and Toshikazu Takata

420 The Aldol Type Reaction Catalyzed by Aryl-malonate Decarboxylase —A Decarboxylasecan Catalyze an Entirely Different Reaction,Aldol Reaction—

The catalytic promiscuity of AMDase was demonstrated using a well-designed substrate basedon the consideration of the reaction mechanism. As the reaction catalyzed by AMDase issupposed to proceed via an enolate intermediate, we expected that the enzyme promotes thealdol type reaction when an acceptor is properly arranged, which turned out to be true.

CHOCO2H

Arylmalonate decarboxylaseOH

CO2HCO2HCO2

Yosuke Terao, Kenji Miyamoto, and HiromichiOhta


422 A Facile Route to Mesoporous CarbonCatalyst Support Modified with MagneticNanoparticles

-4000 -2000 0 2000 4000

-6-4-202468

4K

300K

M (

emu/

g F

e@C

MK

3)

H (Oe)

Superparamagnetic Fe3O4 nanoparticles have been well dispersed on the external surface ofmesoporous carbon CMK-3. The mesoporous composite material can be used as a promisingcatalyst support.

Ye Tian, Guo-Dong Li, Qian Gao, Yang Xiu,Xin-Hao Li, and Jie-Sheng Chen


424 Photocatalytic Activity of RuO2-loadedPbxWO4 (x ¼ 0:2{1:1) for Water Decompo-sition

Haruhiko Kadowaki, Nobuo Saito, HiroshiNishiyama, Yoshiki Shimodaira, HisayoshiKobayashi, and Yasunobu Inoue



426 CeCl3 .7H2O/LiI: A Novel Reagent Systemfor the Synthesis of 4-Iodotetrahydropyransvia Prins Cyclization

OH

O

HO

I

CeCl3•7H2O/LiI

+DCE, 80 °C

J. S. Yadav, B. V. Subba Reddy, G. G. K. S.Narayana Kumar, and G. Madhusudhan Reddy

428 A Novel Route to Prepare ZnO Nanotubes byUsing Microwave Irradiation Method

Well crystallized zinc oxide nanoscale tubular structures have been prepared by using themicrowave irradiation method which does not need any templates, seeds, and surfactants. TheZnO nanotubes have regular polyhedral shapes, hollow cores with diameters of 100–200 nm,lengths 1–3 µm, and wall thicknesses of 10–40 nm.

Xiang-rong Kong, Yueqin Duan, Peng Peng,Chen Qiu, Liyan Wu, Lin Liu, and WenjunZheng

430 Photocatalytic Steam Reforming of Methaneover Platinum-loaded Semiconductors forHydrogen Production

Hydrogen can be produced from photoenergy (such as sunlight) and renewable resources(methane and water) by photocatalytic steam reforming of mathane (PSRM), wherephotoenergy can be stored as the chemical potential of hydrogen.

CH4 + 2 H2O

4 H2 + CO2

G∆ 298 K = 113 kJ/mol

Energy

PhotocatalystsPt/TiO2

Pt/NaTaO3:La

CH4 + 2 H2O ←4 H2 + CO2

hν

Hisao Yoshida, Satoru Kato, Kazuhisa Hirao,Jun-ichi Nishimoto, and Tadashi Hattori

432 Preparation of Bowl-like Hexagonal ZnONanostructures by a Template-assistedSolvent-thermal Route

Bowl-like ZnO nanostructures with hexagonal shape have been fabricated by a solvent-thermalsynthesis route with the assistance of ultrathin anodic aluminum oxide (AAO) template. TEM,ED, and HRTEM investigations confirm that the bowl-like ZnO structures are single-crystal.The room temperature photoluminescence investigations showed that the products possessed asharp near band-edge emission centered.

Aiwu Zhao, Jianbo Liang, Zhenglin Xiong, andYitai Qian

434 A Novel S-bridged PdII2HgII Metallacycleof D-Penicillaminate that Forms a UniqueSupramolecular Structure Combined withTetraamminepalladium(II)

Yusuke Hirai, Asako Igashira-Kamiyama,Tatsuya Kawamoto, and Takumi Konno




436 Hydrothermal Synthesis of Electrochemical-ly Active LiMnPO4

Electrochemically active LiMnPO4 was synthesized by a simple hydrothermal method.

0 20 40 60 80 100 1202

3

4

5

Capacity / mA h g -1

Vol

tage

/ V

Haisheng Fang, Liping Li, and Guangshe Li

438 Blue-emitting Type-II Semiconductor Nano-crystals with High Efficiency Prepared byAqueous Method

ZnSe

ZnSZnSe

CdSeZnSe

ZnSeZnSe

CdSe

ZnSZnCdSe

ZnSe

ZnSZnSeCdS

CdSeZnSe

ZnSeZnSe

CdSe

ZnSZnCdSeCdS

(i) (ii) (iii) (iv)

Four kinds of water-soluble NCs ((i)−(iv)) after post-preparative UV irradiation. Those with atype-II heterostructure and high luminescence in the blue region ((iii) and (iv)) were preparedby modifying the surface of ZnSe-based NCs using Cd and S ions.

Chunliang Li, Kazuhiro Nishikawa, MasanoriAndo, Hiroyuki Enomoto, and Norio Murase


440 RuO2-loaded Sr2þ-doped CeO2 with d0 Elec-tronic Configuration as a New Photocatalystfor Overall Water Splitting

Haruhiko Kadowaki, Nobuo Saito, HiroshiNishiyama, and Yasunobu Inoue

442 Synthesis and Growth of the Facet-tippedIn2O3 Nanowires

The novel structures of the facet-tipped In2O3 nanowires (FTIONs) were fabricated via achemical vapor deposition (CVD) process.

Yan Li, Chang H. Ye, Lei Yang, Cheng Wang,Chun R. Zheng, and Li D. Zhang

444 Formation of Mesoporous Silica from aLayered Polysilicate Makatite

Hiroaki Tamura, Dai Mochizuki, TatsuoKimura, and Kazuyuki Kuroda




446 A Solvent-free Synthesis of Zn–Al LayeredDouble Hydroxides

2θ / degree (Cu Kα)

ZnO

2h4h

8h

24h

5 15 25 35 45 55 65

006

101

015

012

018

110

113

Inte

nsity

/ cp

s

100

002

101

102

110

103

003

2x10

42x

103

We have demonstrated for the first time a

crystallized LDH phase without any

simple method for synthesis of Zn−Al layered double hydroxides, ZnAl−LDH without using any solvent. Phosphate

exchange capacity is 2.6 mmol/g, which is

88% of the theoretical anion exchange

capacity. The formation of a well

impurity is attained completely after 24 h.Ramesh Chitrakar, Satoko Tezuka, AkinariSonoda, Kohji Sakane, Kenta Ooi, and TakahiroHirotsu

448 Carbon-assisted Fabrication of Novel ATOStructures

Quadrilateral frame-like and ship-like ATO microstructures were produced by a carbon-assistedmethod using ATO nanoparticles and high-pure graphite as the source materials.

Zaiyin Huang, Chunfang Chai, Dankui Liao,Xuecai Tan, Jian Wu, Zeguang Zhou, andAiqun Yuan


450 Unexpected Spiro-benzoquinolines in the Re-action of N-(Arylidene)naphthalen-2-amine,Arylaldehyde, and 1,3-DimethylbarbituricAcid in Water

NH

N

NAr

Ar

O

O

OCH3

CH3

NH

N

NAr O

O

OCH3

CH3

Ar

+N

NO

O

O +

CH3

CH3

N = CHArH2O

TEBACArCHO +

A series of unexpected pyrimidine spiro-benzoquinolines were developed based on the reactionof N-(arylidene)naphthalen-2-amine, arylaldehyde, 1,3-dimethylbarbituric acid in aqueousmedia catalyzed by TEBAC. The structure of the product 4a was confirmed by X-ray diffractionstudies.

Xiang-Shan Wang, Mei-Mei Zhang, HongJiang, Chang-Sheng Yao, and Shu-Jiang Tu


452 Facile Synthesis of Novel MonodisperseLiquid-crystalline Oligomers Based onMichael Adducts from Millipede Cyanoace-tates

O

OO

O

O CN

O

O

O

O

CN

CN

OO

O

O CNO

O

OO

O

O CN

OO

O

O CNO

O

OO

O

ONC

O

O

O

O

NC

NC

OO

O

ONC O

O

OO

O

ONC

OO

O

ONC O

p -TsOH, toluene92%

C(CH2OH)4 C(CH2OCOCH2CN)4cyanoacetic acid

mesogenic acrylate, DBU, NMP, 93%

Sadahiro Nakanishi and Mitsuru Ueda


454 Synthesis and Characterization of a NovelMisfit-layered Copper Manganese Hydrox-ide Oxide

Yaohua Xu, Ruitao Chai, Lianxiang Yu,Shouhua Feng, Wenqin Pang, and NoriakiNakayama



456 A New Open-structured Titanophosphatewith Intersecting 12-Ring Channels

Yongnan Zhao, Yang Yang, Xiaoqin Yang, andWenjun Guo


458 Solvothermal Preparation and Characteriza-tion of Barium Titanate Nanocubes

Qiang Liu, Zhiying Yan, Guixiang Sun, andWenjun Zheng

460 Synthesis and Properties of Partially Over-lapped [3.n](3,9)Carbazolophanes

Cyanamide- and oxa-bridged carbazolophanes were synthesized and fluorescence of thesecarbazolophanes indicated monomeric emission.

NN

X

(CH2)n

350 4000

2

4

6

ε / 1

03 mol

−1 L

cm

−1

n = 4

350 4000

2

4

6

Wavelength / nm

n = 5

X = N-CN X = O

Keita Tani, Shinya Yamamoto, Koji Kubono,Kazushige Hori, Yasuo Tohda, HiroyukiTakemura, Yosuke Nakamura, Jun Nishimura,Hiroaki Benten, Hideo Ohkita, Shinzaburo Ito,and Masahide Yamamoto


462 Preparation of ZnO-core/NanoporousSilica-shell Particle and the Conversion toHollow Nanoporous Silica Particle

ZnO particle coated with thin nanoporous silica layer was prepared, and hollow nanoporoussilica particle was obtained by ZnO removal.

Makoto Ogawa, Daisuke Naito, and NaokiShimura

464 Preparation of Three-dimensionally orderedMacroporous SiO2 Membranes with Con-trollable Pore Size

SEM image of ordered macroporous SiO2 membranesmade with PMMA and silica suspension. The volumeratio of PMMA/SiO2 in starting materials is 90/10.

Kui Zhao, Yiqun Fan, and Nanping Xu



466 Plastic and Solid-state Dye-sensitized SolarCells Incorporating Single-wall CarbonNanotubes

A thin plastic solid-state dye-sensitized solar cell incorporates asoft conductor consisting of single-wall carbon nanotube andionic liquid. The first attempt to solidify the full-plastic cellusing the iodine-free conductor achieved a highest powerconversion efficiency of 2.3%.

e−

TiO2

hν

h+

e− I−

dye

carbon

Working electrode

EOIm+

Nobuyuki Ikeda and Tsutomu Miyasaka


468 Preparation of Eu(OH)3 and Eu2O3 Nano-rods through a Simple Method

Eu(OH)3 and Eu2O3 nanorods were prepared by a facile hydrothermal procedure. Theobtained hexagonal phase Eu(OH)3 nanorods have diameter of about 50 nm and lengthsranging from 100 to 800 nm. Eu2O3 nanorods were obtained from Eu(OH)3 by calcination.The Eu2O3 nanorods show a pure cubic phase and exhibit characteristic luminescence ofEu3+ ions at 616 nm.

Xuefeng Yang, Guiling Ning, and Yuan Lin


470 Asymmetric 1,4-Addition Reaction ofArylboronic Acid to Eneone Catalyzed byPalladium with Ferrocene-based PhosphineLigand

ArB(OH)2

O Fe

BrPPh2

CH3

HO

Ar

(S,Rp)+

Pd(dba)2, Cs2CO3,Toluene

Ar = C6H5, o -MeC6H4, m -MeC6H4, p -MeC6H4

25–71% ee

63–93% YieldYoshinori Suzuma, Tetsuya Yamamoto, TetsuoOhta, and Yoshihiko Ito

472 Oxidative Cleavage of Nitroalkenes withHydrogen Peroxide in EnvironmentallyAcceptable Solvents

RNO2

H2O2/OH-

bmimOTf R O

H

R'

R'O

H

+

Olga Bortolini, Antonio De Nino, MarcoFogagnolo, Giancarlo Fantin, LoredanaMariuolo, and Amedeo Tocci


474 Stereoselective Synthesis of Medium-sizedCyclic Compounds through the Intramolecu-lar Michael-type Reaction Utilizing Alkyne–Hexacarbonyldicobalt Complex Formation

R2

O

R1

O

R2

OTBS

R1

O

Co(CO)3

Co(CO)3

Co(CO)3

Co(CO)3

R2

O

R1

OTBS

Co(CO)3

Co(CO)3+

MeAlCl2

R3 R3 R3

( )n( )n( )n

single isomer single isomerKennichi Inaba, Jun Takaya, and NobuharuIwasawa




476 Synthesis of �-Amino Acid Derivatives byNickel(0)-mediated Sequential Addition ofCarbon Dioxide and Dibenzoyldiazene ontoUnsaturated Hydrocarbons

· ++Ni(0)

CO2H

CO2RR

NBzNHBz

R'R'

HClBz

NN

Bz

A stoichiometric amount of nickel(0) complex mediated the aminative carboxylation ofunsaturated hydrocarbons through oxidative cyclization with carbon dioxide followed byinsertion of dibenzoyldiazene into the carbon–nickel bond, giving β-amino acid derivatives.β

Masahiro Murakami, Naoki Ishida, andTomoya Miura

chemistry letters · hideaki suzuki, hatsumi mori, jun-ichi 1,2-da yamaura, masaki matsuda,...

Documents