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Chemistry Letters http://www.csj.jp/journals/chem-lett/ Vol.40 No.5 CMLTAG May, 2011 ISSN 0366-7022 Copyright © 2011 The Chemical Society of Japan Highlight Review 428 Organic Charge-transfer Salts and the Com- ponent Molecules in Organic Transistors Takehiko Mori doi:10.1246/cl.2011.428 Electron donors and acceptors such as tetrathiafulvalene (TTF) and tetracyanoquinodimethane (TCNQ), which have been long known as components of organic metals, act as p- and n-channel organic semiconductors in organic eld-eect transistors. High performance, good thin-film properties, and long-term stability have been achieved on the basisof appropriate molecular design. In addition, their charge-transfer complexes work as the active layers as well as the conducting electrode materials showing low contact resistance. Letter 435 Fabrication of Silica Nanomaterials Reect- ing Morphological Transition of DNA Medi- ated by a Silane-appended IonicLiquid Sol-gel transcription [TMOSmim][Cl] TMOS DNA Si O O O O - + N Si O O O N Cl + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + An ionic liquid incorporating an alkoxysilane group mediates the transcription of DNA into silica gel, and worm-like, rod-shaped, toroidal, or linearly fibrous silica structures are created from the same DNA template through the morphological transition of DNA induced by the ionic liquid. Kojiro Shimojo,* Hisayoshi Mitamura, Tsuyoshi Mouri, and Hirochika Naganawa doi:10.1246/cl.2011.435 Electronic Supporting Information
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Page 1: Chemistry Letters · 2013-02-05 · 438 Rapid Access to an Orthogonally Protected Lewis X Derivative: An Important Building Block for Synthesisof Lewis Antigens OH O OH HO O OH O

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

Vol.40 No.5 CMLTAGMay, 2011 ISSN 0366-7022

Copyright © 2011 The Chemical Society of Japan

Highlight Review

428 Organic Charge-transfer Salts and the Com-ponent Molecules in Organic Transistors

Takehiko Moridoi:10.1246/cl.2011.428

Electron donors and acceptors such as tetrathiafulvalene (TTF) and tetracyanoquinodimethane (TCNQ), which have been longknown as components of organic metals, act as p- and n-channel organic semiconductors in organic field-effect transistors. Highperformance, good thin-film properties, and long-term stability have been achieved on the basis of appropriate molecular design. Inaddition, their charge-transfer complexes work as the active layers as well as the conducting electrode materials showing low contactresistance.

Letter

435 Fabrication of Silica Nanomaterials Reflect-ing Morphological Transition of DNA Medi-ated by a Silane-appended Ionic Liquid

Sol-geltranscription

[TMOSmim][Cl] TMOS

DNA

Si

O

O

O O

+ N Si O

O

O

N

Cl

++

++++++++

++++++++

++

++++++++

++++++++

+

An ionic liquid incorporating an alkoxysilane group mediates the transcription of DNA into silica gel, and worm-like, rod-shaped, toroidal, or linearly fibrous silica structures are created from the same DNA template through the morphological transition of DNA induced by the ionic liquid.

Kojiro Shimojo,* Hisayoshi Mitamura,Tsuyoshi Mouri, and Hirochika Naganawadoi:10.1246/cl.2011.435Electronic Supporting Information

Page 2: Chemistry Letters · 2013-02-05 · 438 Rapid Access to an Orthogonally Protected Lewis X Derivative: An Important Building Block for Synthesisof Lewis Antigens OH O OH HO O OH O

438 Rapid Access to an Orthogonally ProtectedLewis X Derivative: An Important BuildingBlock for Synthesis of Lewis Antigens

OH

O

OHOHO

OHOHO

HOOH

OH

BnO

H3C

OBn

O SPhOBn

OO

BzOOH

O

OOO

NPhth

OTBDMS

OMP

PhBnO

H3COBn

OOBn

1Masashi Ohmae,* Junko Takada, HiroakiMurakami, and Shunsaku Kimuradoi:10.1246/cl.2011.438Electronic Supporting Information

440 Selective Transformation of N-(Propargylic)-hydroxylamines into 4-Isoxazolines and Acyl-aziridines Promoted by Metal Salts

R1

N

R2

OHBnBnN O

R2R1

AgBF4 (0.1 equiv)

CH2Cl2, rt

R1

N

R2

OHBnBnN O

R2R1

AgBF4 (0.2 equiv)CuCl (1.0 equiv)

BnN

R1 R2

O

CH2Cl2, rtNorihiro Wada, Kentaro Kaneko, YutakaUkaji,* and Katsuhiko Inomata*doi:10.1246/cl.2011.440

443 Preparation of Crystalline Tungsten OxideNanorods with Enhanced PhotocatalyticActivity under Visible Light Irradiation

Masahiro Sadakane,* Naoya Tamura, NaokoKanome, Sadanobu Sumiya, Ryu Abe, andTsuneji Sanodoi:10.1246/cl.2011.443Electronic Supporting Information

446 Ion Formation Processes in Laser Ablationof Multicomponent Inorganic Particles Rel-evant to Single Particle Laser Analysis ofAtmospheric Aerosols +

-

+ -

+ -

+

-

+ -

+ -

Probe laser pulse

(1) X + nhν X+ + e-

(2) X + e- X-

YZ + e- Y- + Z

Collisions in the plume

+

-

The energetically preferred ions are dominant. Dissociative electron attachment processes take place.

Ammonium salts

Particle

+ -

+ -

+

-

The energetically preferred ions are not necessarily dominant due to the complexity of subsequent reaction processes.

Sodium salts

+ -

+ -

(1) Primary photo-ionization to form positive ion and electron(2) Subsequent electron capture to form negative ion

Akihiro Yabushita,* Takashi Kinugawa,Masahiro Narukawa, Kenshi Takahashi,Masahiro Kawasaki, and Yutaka Matsumidoi:10.1246/cl.2011.446

449 Reaction of 2-(Aminomethyl)pyridine withSelenium Dioxide: Synthesis and Structureof Selenium-bridged Imidazo[1,5-a]pyridineDerivatives

NNN

Se NN N

NNN

SeSe NN N

and/orN

NH2

SeO2

Osamu Niyomura,* Yoshimi Yamaguchi,Souhei Tamura, Mao Minoura, and YoshihisaOkamotodoi:10.1246/cl.2011.449Electronic Supporting Information

Chemistry Letters Vol.40, No.5 (2011)C-44

http://www.csj.jp/journals/chem-lett/Copyright © 2011 The Chemical Society of Japan

Page 3: Chemistry Letters · 2013-02-05 · 438 Rapid Access to an Orthogonally Protected Lewis X Derivative: An Important Building Block for Synthesisof Lewis Antigens OH O OH HO O OH O

452 Novel Molecular Conductors Based onCyclopenteno-TTP Showing Strong Self-aggregation

Masataka Nishiwaki, Ken-ichi Nakamura,Takashi Shirahata,* and Yohji Misaki*doi:10.1246/cl.2011.452Electronic Supporting Information

455 A Möbius Aromatic Pd(II) Complex of[28]Hexaphyrin(2.1.1.0.1.1)

Kohei Moriya, Tomoki Yoneda, Shohei Saito,and Atsuhiro Osuka*doi:10.1246/cl.2011.455Electronic Supporting Information

458 Preparation of Thin-film Hydroxyapatite/Polymer Hybrids Thin-film hydroxyapatite (HAP)/

chitosan hybrids have been prepared from a supersaturated HAP solution by the addition of an acidic polymer. The HAP crystals strongly interact with the chitosan matrix. TEM observation reveals that block-shaped HAP crystals have grown in the matrix developing along the c axis similar to the crystals in bone.

Tatsuya Nishimura,* Hirotaka Imai, Yuya Oaki,Takeshi Sakamoto, and Takashi Kato*doi:10.1246/cl.2011.458Electronic Supporting Information

461 Remarkable Long-term Stability of Cera-some as an Organic­Inorganic Hybrid Nano-container for Water-soluble Macromolecules

Takahiro Kawataki, Kazuma Yasuhara,* andJun-ichi Kikuchi*doi:10.1246/cl.2011.461Electronic Supporting Information

464 Condensation Reaction of Phenols with 1,5-Pentanedial for Synthesis of Noria-like Lad-der-cyclic Oligomer by Dynamic CovalentChemistry Mechanism

HO OH

HO

HO

HOOH

OH

OH

HO

HO OH

OH

OHHO

OHHO OH

HOHO OH

HO

HO OH

OH

R

R

R

R

R

R

R R

RR

R R

noriaMR (R = CH3)noriaPY (R = OH)

Condensation reaction of 2-methylresorcinol and pyrogallol with 1,5-pentanedial [CH2(CH2CHO)2] in the presence of concentrated HCl in ethanol at 80 °C for 48 h proceeded according to a dynamic covalent chemistry (DCC) mechanism to afford the noria-like ladder-cyclic oligomers noriaMR and noriaPY, respectively.

Hiroyuki Seki, Shingo Kuwabara, Hiroto Kudo,and Tadatomi Nishikubo*doi:10.1246/cl.2011.464Electronic Supporting Information

Chemistry Letters Vol.40, No.5 (2011) C-45

http://www.csj.jp/journals/chem-lett/Copyright © 2011 The Chemical Society of Japan

Page 4: Chemistry Letters · 2013-02-05 · 438 Rapid Access to an Orthogonally Protected Lewis X Derivative: An Important Building Block for Synthesisof Lewis Antigens OH O OH HO O OH O

467 Synthesis and Properties of 1,3-Dithiole[4]-dendralenes, in Which Two Thiophene RingsAre Inserted

−2e

+2e

−2e

+2e

R1R1

R1 R1

SSSR2R2

SS

R2R2

SS

SS

SSR1R1

SSR2R2

S

SS

R1R1

SS

R2 R2

S

R1R1R2 R2

SS SS

S

R1 R1 R2R2S S

3Bd2+3Bd4+3Bd R1= Me

R2 = CO2Me

S SSS

Type I Type IType II

Masataka Nishiwaki, Mami Tezuka, TakashiShirahata, and Yohji Misaki*doi:10.1246/cl.2011.467Electronic Supporting Information

470 Different Chiral Selective Recognition/Extraction of (n,m)Single-walled CarbonNanotubes Using Copolymers Carrying aCarbazole or Fluorene Moiety

Selective extraction of

single-walled carbon nanotubes

S S S

S

N

N N n

S

SN N n

Hiroaki Ozawa, Tsuyohiko Fujigaya, SuheeSong, Hongsuk Suh, and Naotoshi Nakashima*doi:10.1246/cl.2011.470Electronic Supporting Information

473 Photoinduced Surface-relief-grating Forma-tion Using a Mixed Film of 4-[Bis(4-methyl-phenyl)amino]azobenzene and 4,4¤,4¤¤-Tris[3-methylphenyl(phenyl)amino]triphenylamine

N

N

N

N

NN

BMAB

m-MTDATA

N

Hideyuki Nakanodoi:10.1246/cl.2011.473

476 Molecular Dynamics Simulation for Irrever-sibility of Green Fluorescent Protein beforeand after Photoactivation

Hydrogen-bonding networks around a chromophore in (A) green fluorescent protein (GFP) and (B) the GFP after photoactivation (RsFP). The irreversible feature of photoactivation arises from the difference of hydrogen-bonding network in GFP and RsFP.

Jun Koseki, Yukiumi Kita, and MasanoriTachikawa*doi:10.1246/cl.2011.476

478 Formation Mechanism of C2+ in a Gas

Chromatography Coupled to Time-of-flightMass Spectrometry

The presence of several inorganic compounds induced the degradation of poly(tetrafluoroethylene) into C2

+ in different abundances in a gas chromatography coupled to time-of-flight mass spectrometry. A probable formation mechanism of C2

+ was proposed. The finding is significant and useful to exploit such a method generating molecular C2 ions in laboratory conditions.

30.999CF+

42.999C2F+C2

+

24.000 49.997

30.999CF+

CF2+

C2F3+

80.994C2F2

+

61.998

C C

F

F

F

Fn

Mang Wang, Le Xin Song,* Zheng Dang,Lin Hong Zhu, and Jun Yangdoi:10.1246/cl.2011.478

Chemistry Letters Vol.40, No.5 (2011)C-46

http://www.csj.jp/journals/chem-lett/Copyright © 2011 The Chemical Society of Japan

Page 5: Chemistry Letters · 2013-02-05 · 438 Rapid Access to an Orthogonally Protected Lewis X Derivative: An Important Building Block for Synthesisof Lewis Antigens OH O OH HO O OH O

480 Oxidation of Carbon Monoxide with Silver-exchanged Mordenite Containing Cobalt inFramework Sites

Norihito Hiyoshi,* Takuji Ikeda, and MasanaoKatodoi:10.1246/cl.2011.480

482 Recognition of Photoresponsive PolymerTargets by Protein Fused with cis-FormAzobenzene-binding Peptide

The Trp–His–Thr–Leu–Pro–Asn–Ala sequence, which recognizes preferentially cis-form azobenzene groups, was used as a ligand to immobilize green fluorescent protein (GFP) onto the polymer film surfaces containing cis-form azobenzene groups.

Jing Chen, Takeshi Serizawa,* and MakotoKomiyamadoi:10.1246/cl.2011.482Electronic Supporting Information

484 Silica Sulfuric Acid-promoted Deacylation of¡-Bromo-¢-diketones

R1 R1

O O

Br R2R1 R2

O

Br

SSA

DCE, 1 hTadashi Aoyama,* Sho Kubota, Toshio Takido,and Mitsuo Kodomaridoi:10.1246/cl.2011.484Electronic Supporting Information

486 Ion Transport across Planar Bilayer LipidMembrane Driven by D-Fructose Dehydro-genase-catalyzed Electron Transport

TCNQ·−

TCNQCl– K+

W1 W2BLM

FDHD-fructose

5-keto-D-fructose

[Fe(CN)6]3–

Cl–

Cl–Cl–

Cl–

Cl–

Cl–K+

K+

K+

K+

K+K+

K+

[Fe(CN)6]4–

Cl–

K+

K+

K+

K+

Electron transport catalyzed by a membrane-bound enzyme, D-fructose dehydrogenase (FDH), from one aqueous phase (W1) containing D-fructose to another one (W2) containing [Fe(CN)6]

3− across a planar bilayer lipid membrane (BLM) containing 7,7,8,8-tetracyanoquinodimethane (TCNQ) was investigated electrochemically. We found that the ion transport across the BLM was driven at the same time by the electromotive force generated by the electron transport.

Keisuke Sasakura, Osamu Shirai,* Kei Hichiri,Maiko Goda-Tsutsumi, Seiya Tsujimura, andKenji Kanodoi:10.1246/cl.2011.486

489 Ruthenium-catalyzed Formation of TertiaryAmines from Nitriles and Alcohols

CNR + R1 CH2OHRuCl3/dppf

150 °CN

R1

RR1

R1

R1

R1

+

major minor

N

A ruthenium-catalyzed tertiary-amine formation was developed using the borrowing hydrogen strategy. Various tertiary amines were obtained efficiently from nitriles and primary alcohols. Two possible pathways were found for the tertiary-amine formation under RuCl3/dppf catalytic conditions. The nitriles mainly act as a nitrogen source in this kind of transformation.

Saiwen Liu, Ru Chen, and Guo-Jun Deng*doi:10.1246/cl.2011.489Electronic Supporting Information

Chemistry Letters Vol.40, No.5 (2011) C-47

http://www.csj.jp/journals/chem-lett/Copyright © 2011 The Chemical Society of Japan

Page 6: Chemistry Letters · 2013-02-05 · 438 Rapid Access to an Orthogonally Protected Lewis X Derivative: An Important Building Block for Synthesisof Lewis Antigens OH O OH HO O OH O

492 Iron-catalyzed Pinacol Coupling of ArylKetones with a Phenyltitanium Reagent:A New Type of Catalytic Reaction

Ar

O

R

HO OH

R RAr Ar

[Fe(acac)3] (1 mol%)

THF, 20 °C+ [PhTi(Oi-Pr)3] + Ph−Ph

R = aryl, alkyl 56−93%Ar = aryl then 1M HCl(aq)

A reaction of aryl ketones with phenyltitanium triisopropoxide ([PhTi(Oi-Pr)3]) in the presence of [Fe(acac)3] as a catalyst (1 mol %) gave the corresponding pinacols in high yields. The catalytic cycle of this process involves an iron-catalyzed disproportionation of [PhTi(Oi-Pr)3] into biphenyl and a low-valent titanium species.

Tamio Hayashi* and Keigo Sasakidoi:10.1246/cl.2011.492Electronic Supporting Information

495 Vanadium-catalyzed Atmospheric Oxidationof Benzyl Alcohols Using Water as Solvent

R1 R2

OH VOSO4 (5 mol%), 4,4'-tBubpy (10 mol%)

H2O, O2 or air (0.1 MPa), 90 oC R1 R2

O

Shintaro Kodama, Suguru Hashidate, AkihiroNomoto, Shigenobu Yano, Michio Ueshima,and Akiya Ogawa*doi:10.1246/cl.2011.495Electronic Supporting Information

498 Synthesis of Red-emitting (Gd, Ca, Eu)2-W2O9 Phosphors

The red emission intensity of these phosphors was successfully enhanced by the Ca2+ doping into the (Gd1–yEuy)2W2O9 lattice. The maximum emission intensity was obtained for (Gd0.58Ca0.02Eu0.40)2W2O8.98, and the emission intensities were 15.2 and 29.1 times higher than those of a commercial (Y0.98Eu0.02)2O2S phosphor under the excitation wavelengths of 394 and 464 nm, respectively.

Sun Woog Kim, Toshiyuki Masui, andNobuhito Imanaka*doi:10.1246/cl.2011.498Electronic Supporting Information

501 Multi-shaped Gold Nanoparticles Synthe-sized Using an Amino-terminated Poly(ethyl-ene oxide)­Poly(propylene oxide) Block Co-polymer in Aqueous Solutions

[AuCl4]- + CH3[OCH2CH2]33[OCH2CH(CH3)]10NH2 (SURFONAMINE L-207) in water

Gold Nanoparticles

Toshio Sakai,* Mai Ishigaki, Tomohiko Okada,and Shozi Mishimadoi:10.1246/cl.2011.501Electronic Supporting Information

504 Evidence of CO2 Chemisorption at HighTemperature in Lithium Gallate (Li5GaO4)

100

100

110

120

130

140

Temperature/°C

Wei

ght p

erce

ntag

e/%

Superficialabsorption

Bulkabsorption

2Li5GaO4+4CO2 4Li2CO3+2LiGaO2

900800700600500400300200

Tatiana Ávalos-Rendón and Heriberto Pfeiffer*doi:10.1246/cl.2011.504Electronic Supporting Information

Chemistry Letters Vol.40, No.5 (2011)C-48

http://www.csj.jp/journals/chem-lett/Copyright © 2011 The Chemical Society of Japan

Page 7: Chemistry Letters · 2013-02-05 · 438 Rapid Access to an Orthogonally Protected Lewis X Derivative: An Important Building Block for Synthesisof Lewis Antigens OH O OH HO O OH O

506 Ionic Liquid-accelerated Allylation of Car-bonyl Compounds with a Catalytic Amountof Indium Generated from In Situ Reductionof InCl3 with Aluminum

R1 R2

O+ Br

InCl3 (10 mol%)Al(0) (160 mol%)

bmim•PF6-H2O (5 : 2)0.5 h

R1

OH

R2

Tsunehisa Hirashita,* Yuki Sato, Dai Yamada,Fusako Takahashi, and Shuki Arakidoi:10.1246/cl.2011.506

508 A Novel Peptide Array Using a PhageDisplay System for Protein Detection

A novel peptide array for protein detection system is described, based on the phage display system. The binding strength and specificity of the antibodies against immobilized phage-displayed peptides were the same as against freed peptides. Therefore, phage-displayed peptides can be used for ligands of a protein-detecting peptide array.

Toshiki Sawada, Kojiro Ishiguro, TsuyoshiTakahashi, and Hisakazu Mihara*doi:10.1246/cl.2011.508Electronic Supporting Information

510 Dye-sensitized Solar Cells Based on NovelDiphenylpyran Derivatives

0

2

4

6

8

0 0.1 0.2 0.3 0.4 0.5 0.6

Cu

rren

t d

ensi

ty /

mA

cm

-2

Potential / V

3a

3b

3c

3d

3d: Highest efficiency = 2.9 %

Diphenylpyran derivatives are prepared and used as sensitizers of DSSCs for the first time.

Altan Bolag, Jun-ichi Nishida, Kohjiro Hara,and Yoshiro Yamashita*doi:10.1246/cl.2011.510Electronic Supporting Information

512 A Highly Efficient Cu/Al(OH)3 Catalyst forthe Hydration of Acrylonitrile to Acrylamide

A highly efficient, easily filterable Cu/Al(OH)3 catalyst for the hydration of acrylonitrile to acrylamide has been synthesized by reducing a particle size-controlled malachite phase-free Cu/Al hydrotalcite. The stability of the Cu/Al(OH)3 catalyst under aqueous reaction conditions was further improved by treatment with H3PO4.

+ H2O CONH2

Cu/Al(OH)3CN

70 °CShinichiro Ichikawa,* Satoru Miyazoe, andOsamu Matsuokadoi:10.1246/cl.2011.512Electronic Supporting Information

515 A Mononuclear Peracetatoiron(III) Com-plex: Structural and Spectroscopic Charac-terization, and Oxidation Reactivity

[Fe(6Me2-BPP)(CH3C(O)O2)]+ (2)

A mononuclear peracetatoiron(III) complex [Fe(6Me2-BPP)(CH3C(O)O2)]

+ (2) with a tripodal

ligand (6Me2-BPP) was prepared, which is the first example of a structurally and spectroscopically well-defined non-heme type peracetatoiron(III) complex and shows modest oxidation ability toward triphenyl phosphine, some olefins, and the tertiary C–H bond of adamantane.

Xi Zhang, Hideki Furutachi,* Tomonori Tojo,Tomohiro Tsugawa, Shuhei Fujinami, TakeshiSakurai, and Masatatsu Suzukidoi:10.1246/cl.2011.515Electronic Supporting Information

Chemistry Letters Vol.40, No.5 (2011) C-49

http://www.csj.jp/journals/chem-lett/Copyright © 2011 The Chemical Society of Japan

Page 8: Chemistry Letters · 2013-02-05 · 438 Rapid Access to an Orthogonally Protected Lewis X Derivative: An Important Building Block for Synthesisof Lewis Antigens OH O OH HO O OH O

518 Asymmetric Vinylogous Michael Reaction of¡,¢-Unsaturated Aldehyde with Buteno-4-lactone

R O O

O

R

O

OOMeOH, LiOAc, rt.

NaBH4

MeOH R

OH

OO

+

18 examples, up to 98% ee

NH

Ph

OTMSPh

(10 mol%)

The asymmetric vinylogous Michael reactions of -unsaturated aldehydes with -butenolide were efficiently catalyzed by the Jørgensen−Hayashi catalyst and LiOAc. The desired products were obtained in satisfactory yields with excellent enantioselectivities and moderate diastereoselectivities.

α,β γ

Xiaoyan Luo, Zhiqiang Zhou, Feng Yu, Xin Li,Xinmiao Liang, and Jinxing Ye*doi:10.1246/cl.2011.518Electronic Supporting Information

521 Stereoselective One-pot 1,4-Elimination andthe [1,2]-Wittig Rearrangement of (E)-¤-(Arylmethoxy or 3-Silyl-2-propynyloxy)-sub-stituted Allylic Sulfones

O

Ts

RHOR

E /Z, up to 1/99

CSii -Pr3)(R = aromatic, C

O R

t-BuOK(2.0 equiv)

LDA(2.2–2.5 equiv)

Susumu Horii, Isao Ishimaru, Yutaka Ukaji,*and Katsuhiko Inomata*doi:10.1246/cl.2011.521

524 Synthesis and Crystal Structure ofCubic Perovskite-type BaMoxTi1¹xO3 withx µ 0.175

Kunimitsu Kataoka,* Norihito Kijima, HiroshiHayakawa, Ken-ichi Ohshima, and JunjiAkimotodoi:10.1246/cl.2011.524

527 Layered Nb2O5­WOx Sheet Catalyst Com-posed of Nanofibers That Are Active inFriedel­Crafts Reactions

(COOH)2

Post treatment of Nb2O5−WOx fibers with an aqueous solution of oxalic acid resulted in the formation of nanosheet oxides with a layer-by-layer structure in which bundles of fibers were assembled.

Kazu Okumura,* Soichiro Ishida, TakuyaTomiyama, and Miki Niwadoi:10.1246/cl.2011.527Electronic Supporting Information

530 Rapid Electroformation of Giant Vesicles A small amount of an electrolyte makes electroformation of giant vesicles proceedconsiderably faster.

Yukihisa Okumura* and Koji Uritadoi:10.1246/cl.2011.530

Chemistry Letters Vol.40, No.5 (2011)C-50

http://www.csj.jp/journals/chem-lett/Copyright © 2011 The Chemical Society of Japan

Page 9: Chemistry Letters · 2013-02-05 · 438 Rapid Access to an Orthogonally Protected Lewis X Derivative: An Important Building Block for Synthesisof Lewis Antigens OH O OH HO O OH O

533 Confocal Viviperception of a TransparentMedaka Fish (Oryzias latipes) Using Func-tionalized Mesoporous Silica Nanoparticles(MSNs)

Direct observation of biodistribution of fluorescent mesoporous silica nanoparticles in see-through medaka fish has been achieved by fluorescent confocal microscopy without tissue dissection.

Wen-Chi Lin, Chun-Wei Chiang, Chen-YuHong, Pei-Jen Chen,* and Kevin C.-W. Wu*doi:10.1246/cl.2011.533

536 Self-limiting Deposition of N-(3-Trimethoxy-silylpropyl)ethylenediaminetriacetic Acid forthe Production of Aqueous-stable Iron OxideNanoparticles

OH2+OH2+

OH2+

OH2+

OH2+OH2+

H2O+

Fe2O3FeCl2+FeCl3+NH4OHHeat

HNO3Fe(NO3)3

OH2+OH2+

OH2+

OH2+

OH2+OH2+

H2O+

H2O+

Fe2O3 Fe2O3+ Fe2O3

pH 2.3

pH 2.3pH 11.7 R-Si-O-

pH 4-9 R-Si-OH Deposition/Condensation

Window

pH 11 R-Si-O-

Dialyze against water,

particles stable at

neutral pH

pH 2.3 pH 11Rapid pH Change

No Reaction No Reaction

Unstable at neutral pH

without functionalziation

Presented is a method for the instantaneous surface functionalization of iron oxide nanoparticles (IOP) utilizing N-(3-trimethoxysilylpropyl)ethylenediaminetriacetic acid as a stabilizing group. Basic silane ligands are rapidly mixed with acid-stabilized iron oxide nanoparticles resulting in a rapid pH shift. The pH passes through neutral promoting silane condensation on the iron oxide surface but is rapid enough to prevent aggregation. Carboxysilane iron oxide particle (CSIOP) is stable at neutral pH and exhibits no aggregation while bare IOP aggregate substantially.

H2O+

Jason Steiner and Sadik Esenerdoi:10.1246/cl.2011.536

538 Facile Evaluation of Interactions betweenCarbon Nanotubes and Phthalocyanines Us-ing Silica Spheres Coated with Ultrathin-layers of Single-walled Carbon Nanotubes

A simple and versatile method to evaluate the interactions between four different phthalocyanine dyes and carbon nanotube surfaces using silica spheres coated with ultrathin-layers of single-walled carbon nanotubes is described.

JongTae Yoo, Tsuyohiko Fujigaya,* andNaotoshi Nakashima*doi:10.1246/cl.2011.538Electronic Supporting Information

540 High-yield Synthesis of Boron Nitride Nano-tubes by Annealing Fe3BO6

Boron nitride nanotubes were synthesized in high yield via chemical vapor deposition method by annealing Fe3BO6 under NH3 atmosphere at 1100 °C. The XRD and FTIR spectra indicate the products are high pure hexagonal phase of BN. SEM, TEM, and HRTEM were used for observing the morphology of the products. The possible chemical reactions and growth mechanism are also proposed.

Jie Li, Laiping Zhang, Yunle Gu,* QiongliQian, Jilin Wang, Guowei Zhao, and Xinye Pandoi:10.1246/cl.2011.540

542 Tin­Tungsten Mixed Oxide as EfficientHeterogeneous Catalyst for Conversion ofSaccharides to Furan Derivatives O

HO O

O

O

HMF

furfural

hexose

pentose

Sn–W oxide

Sn–W oxideKazuya Yamaguchi, Tomoaki Sakurada,Yoshiyuki Ogasawara, and Noritaka Mizuno*doi:10.1246/cl.2011.542Electronic Supporting Information

Chemistry Letters Vol.40, No.5 (2011) C-51

http://www.csj.jp/journals/chem-lett/Copyright © 2011 The Chemical Society of Japan

Page 10: Chemistry Letters · 2013-02-05 · 438 Rapid Access to an Orthogonally Protected Lewis X Derivative: An Important Building Block for Synthesisof Lewis Antigens OH O OH HO O OH O

544 Single-crystal Copper­Phthalocyanine Nano-rods Self-assembled by a Solvent Evapora-tion Method

Single-crystal β-phase CuPc nanorods were prepared on a Si substrate by a solvent evaporation method. The formation of CuPc nanorods was insensitive to the solvents and substrates. In addition, a good p–n junction was formed between CuPc nanorod and Si substrate.

β

Yan Xiao, Yan Li, Meng Zhang, Feng-XiaWang, and Ge-Bo Pan*doi:10.1246/cl.2011.544

Chemistry Letters Vol.40, No.5 (2011)C-52

http://www.csj.jp/journals/chem-lett/Copyright © 2011 The Chemical Society of Japan


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