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Yoshihito Kunugi, Kazuo Takimiya, Kazuo Yamashita, Yoshio Aso, Tetsuo ...
2002 Volume 31 Issue 10 Pages
958-959
Published: 2002
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Two isomeric di(2-thienyl)naphthodithiophenes,
anti- and
syn-DThNDTs, have been investigated as active materials of organic field-effect transistors (FETs). Field-effect mobilities of 2–3×10
−4 cm
2 V
−1 s
−1 were obtained for the
anti-DThNDT film, while no obvious FET function was observed with the
syn-DThNDT film.
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Hiroshi Tsuno, Hiroyuki Kagi, Tasuku Akagi
2002 Volume 31 Issue 10 Pages
960-961
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The formation of calcium carbonate from a supersaturated solution doped with trace lanthanum was studied at various temperatures. At a temperature of around 50 °C, more than 80% of calcium carbonate precipitated from 5 μmol kg
−1 LaCl
3, 15 mmol kg
−1 CaCl
2-NaHCO
3 solution was vaterite while from a lanthanum-free solution calcium carbonate precipitated exclusively as calcite.
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Hiroyuki Morioka, Tsunehisa Kimura, Ryoichi Aogaki
2002 Volume 31 Issue 10 Pages
962-963
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A perchlorate-doped polypyrrole was processed by repeated redox cycles in a 0.1 M NaClO
4 aqueous solution under a magnetic field applied parallel to the faradic current. The film that was initially isotropic underwent magnetic alignment. X-ray measurement revealed that the polypyrrole layered structures were aligned perpendicular to the electrode surface.
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Tetsushi Yamamoto, Yuji Wada, Hengbo Yin, Takao Sakata, Hirotaro Mori, ...
2002 Volume 31 Issue 10 Pages
964-965
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Anatase TiO
2 nanocrystallites have been prepared in 1,4-butanediol, 1,5-pentanediol or 1,6-hexanediol under microwave irradiation by the polyol method. It is demonstrated that the crystallite size less than 10 nm can be controlled by changing the quantity of added water.
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Kuninobu Kasuga, Tadaaki Akita, Noriyuki Matsuura, Makoto Handa, Tamot ...
2002 Volume 31 Issue 10 Pages
966-967
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The title complexes acted as sensitizers for photooxidation in irradiation with visible light in aerated dimethyl sulfoxide. The reaction proceeded via a singlet-oxygen pathway. The oxidation rate decreased with increasing the number of dendrimer generation.
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Mamoru Fujitsuka, Hongxia Luo, Yasujiro Murata, Noriyuki Kato, Osamu I ...
2002 Volume 31 Issue 10 Pages
968-969
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Photoexcitation dynamics of a pyrene-C
60 dyad molecule has been investigated. From the excitation spectrum and fluorescence lifetime measurements, effective energy transfer processes from the singlet excited pyrene-moiety were confirmed both in polar and nonpolar solvents. The transient absorption suggested that the triplet excited C
60 was generated effectively upon excitation of the pyrene-moiety via the singlet energy transfer and the intersystem crossing process.
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Mutsuyoshi Matsumoto, Ken-ichi Tanaka, Reiko Azumi, Yukishige Kondo, N ...
2002 Volume 31 Issue 10 Pages
970-971
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Mixed Langmuir–Blodgett (LB) films of arachidic acid (AA) and perfluorotetradecanoic acid (PA) took phase-separated structures with the monolayer domains of AA buried in the monolayer of PA. When two monolayers of AA were transferred on the 1/1 mixed LB films of AA and PA, AA was transferred only on the domains of AA in the mixed LB films.
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Takeru Iwamura, Junji Hirayama, Jun-ichi Iwamura
2002 Volume 31 Issue 10 Pages
972-973
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Polychlorinated aromatic compounds such as polychlorinated dibenzo-
p-dioxins, and dibenzofurans were successfully and quantitatively recovered using a steam distillation-azeotropy system without the complex procedures.
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Chia-Wen Wu, Jie-Bin Pang, Makoto Kuwabara
2002 Volume 31 Issue 10 Pages
974-975
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The phase transformation from lamellar to 2-dimensional (2D) hexagonal structure has been observed in mesostructured silica thin films, synthesized using a self-assembly triblock copolymer (EO
20PO
70EO
20, P123) as a template, during heat treatment under water vapor hydrothermal conditions.
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Takashi Yanagishita, Kazuyuki Nishio, Masashi Nakao, Akira Fujishima, ...
2002 Volume 31 Issue 10 Pages
976-977
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Highly ordered arrays of diamond cylinders with square and triangular cross sections were prepared by CVD synthesis using anodic porous alumina templates with modified pore shapes. The CVD synthesis of diamond was carried out using a microwave enhanced CVD apparatus using alumina templates. By removing the alumina template in concentrated phosphoric acid, an ordered array of cylinders with a uniform size and shape was obtained. The obtained diamond cylinders could be isolated, and yielded the shape- and size-controlled diamond particles.
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Tharathon Mongkhonsi, Surangkana Umpo, Pongsakorn Thongsang
2002 Volume 31 Issue 10 Pages
978-979
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Phthalic anhydride and maleic anhydride could be completely oxidised to CO
2 and H
2O over Co-Mg-O/Al
2O
3 and V-Mg-O/TiO
2 catalysts. Experimental results showed that the cobalt and vanadium oxide catalysts promoted with MgO had superior combustion activity than the unpromoted catalysts.
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Asako Kamiyama, Takashi Kajiwara, Tasuku Ito
2002 Volume 31 Issue 10 Pages
980-981
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A novel cage complex [Cu
6Cl(MeO)
2(pz)
9] (
1) was synthesized via a chloride ion template reaction and structurally characterized. In
1, two trinuclear units, {Cu
3(MeO)(pz)
3}
2+, are linked by three pyrazolate ligands, six copper(II) ions form a trigonal prism, and a chloride ion is located at the center of the cage.
1 shows rather strong antiferromagnetic coupling between the copper(II) ions through the MeO
− and pyrazolate ligands.
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An-Wu Xu
2002 Volume 31 Issue 10 Pages
982-983
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Hierarchically ordered mesostructured silica was prepared using the mixture of silicone surfactant and P123 as the template. Hexagonal nanopores were built in layered silica walls to form complex mesostructures. The lamellar mesophase and hexagonal nanopores in the walls were independently templated from silicone surfactant and P123.
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Junsheng Yu, Yasuhiko Shirota
2002 Volume 31 Issue 10 Pages
984-985
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A new and better generation of red-fluorescent dyes based on a chromene-2-ylidene moiety, [7-diethylamino-3-(2-thienyl)chromen-2-ylidene]-2,2-dicyanovinylamine (ACY) and {10-(2-thienyl)-2,3,6,7-tetrahydro-1H,5H-chromeno[8,7,6-ij]quinolizin-11-ylidene}-2,2-dicyanovinylamine (CQY), has been designed and synthesized, and has been proven to function as excellent red-emitting dopants in high-performance red-emitting organic electroluminescent devices.
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Yoshinori Takano, Hitomi Masuda, Takeo Kaneko, Kensei Kobayashi
2002 Volume 31 Issue 10 Pages
986-987
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Formation of amino acids from mixtures of methanol, ammonia and water in various phases by γ-rays and UV irradiation were quantitatively verified. A wide variety of amino acids were detected in every hydrosate of the product. Each G-value (the number of formed molecules per deposit energy of 100 eV) was around 10
−2 order, which was independent from the phase of the starting materials and kind of the energy.
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Qihua Zhao, Haifang Li, Xiaofeng Wang, Zhida Chen
2002 Volume 31 Issue 10 Pages
988-989
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Treatment of 1,4-bis(imidazole-1-ylmethyl)benzene (bix) with Co(OAc)
2 in organic/inorganic solution gives the complex [Co(bix)
3]·2OH·CH
3OH·3H
2O (
1), which forms an open three-dimensional framework. The specific channels in
1 occupied by solvent molecules, indicate that
1 might be an attractive functional microporous solid materials.
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Kanna Takagi, Tsutomu Ishiwatari
2002 Volume 31 Issue 10 Pages
990-991
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Here we show a new method for arranging Au nanoparticles along polymer chains. The method contains a polymer complex formation between a thiolated poly(ethylene oxide) chain bound on the Au surface and the added polymers. When poly(acrylic acid) was added, the Au particles formed a network arrangement. The Au particles lined up excellently when a rigid chondroitin sulfate c sodium salt was added to the solution.
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Youngbaek Kim, Eunsun Jung, Mison Yim
2002 Volume 31 Issue 10 Pages
992-993
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Self-hydrolyzing inorganic precursors underwent interface selective sol-gel polymerization at different interfaces between water and templates. This interface sol-gel polymerization was applied to fabricating discrete materials by encapsulating various materials with silica, titania, iron oxide and alumina.
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Kazuhiro Sayama, Jan Augustynski, Hironori Arakawa
2002 Volume 31 Issue 10 Pages
994-995
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Carbonate ions cause a net increase of the saturation photocurrent as well as the occurrence of a stepwise photocurrent/potential (I/V) characteristic for the photooxidation of water at a nanocrystalline TiO
2 photoanode deposited on the conducting glass.
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Junji Ichikawa, Terunobu Saitoh, Tomoyuki Tada, Teruaki Mukaiyama
2002 Volume 31 Issue 10 Pages
996-997
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A convenient method for carbon extension of acetals and aldehydes has been established consisting of combining a ketenedithioacetal
1 and nucleophiles such as alkyl- and alkynylmetal, metal enolate, and hydride. Acetals and aldehydes react with
1 in the presence of TMSOTf, and the successive addition of nucleophiles affords the corresponding β-alkoxy and β-siloxy dithioacetals in good yields.
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Junfang Guo, Lianshe Fu, Huanrong Li, Youxuan Zheng, Fengyi Liu, Qingg ...
2002 Volume 31 Issue 10 Pages
998-999
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The crystal structure of Sm(HTH)
3Phen [HTH: 4,4,5,5,6,6,6-heptafluoro-1-(2-thienyl)-1,3-hexanedione, Phen: 1,10-Phenanthroline] has been determined by single crystal X-ray diffraction and the coordination geometry of Sm atom is a dodecahedron. The complex can give the characteristic luminescence of Sm
3+ upon UV excitation.
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Toshiaki Yoshimura, Takayoshi Fujii, Huagang Dai
2002 Volume 31 Issue 10 Pages
1000-1001
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Dinuclear complex [CuCl
2(μ-NSPh
3)]
2 (
2) and mononuclear complex [CuCl
2(Ph
3SN)
2] (
3) were obtained concurrently by a reaction of CuCl
2 with triphenyl-λ
6-sulfanenitrile (
1) in acetonitrile. They were characterized by elemental analysis, IR and NMR spectroscopy, and their molecular structures were determined by X-ray crystallographic analysis.
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Kazuyuki Takahashi, Hiroaki Tanioka, Hiroyuki Fueno, Yohji Misaki, Kaz ...
2002 Volume 31 Issue 10 Pages
1002-1003
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New families of extended tris-fused TTFs, in which aromatic rings are inserted, have been synthesized. Cyclic voltammetry and theoretical calculation of them indicate electronic structure of the furan and thiophene derivatives may be regarded as tris-fused TTFs, whereas the benzene derivative as a dimeric (2-methylidene-1,3-dithiolo[4,5-
d])-TTF.
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Ohki Sato, Yuji Okada, Takashi Shirahata, Kazuko Takahashi, Josuke Tsu ...
2002 Volume 31 Issue 10 Pages
1004-1005
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N,
N′-Dicyano-
p-acepleiadylenequinonediimine (DCNAPQ-DI) and its 1,2-dibromo derivative (Br
2-DCNAPQDI), a new family of acepleiadylene-based DCNQI type electron acceptors have been synthesized. Br
2-DCNAPQDI exhibiting the first half-wave reduction potential of −0.03 V vs SCE afforded a fairly high conducting Cu salt.
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Hitoshi Kumagai, Masaaki Ohba, Katsuya Inoue, Hisashi Okawa
2002 Volume 31 Issue 10 Pages
1006-1007
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Reaction between Co(II) ion and 4-phenoxybenzoate (L) under hydrothermal conditions gives a one-dimensional coordination polymer, [Co
2L
4]. [Co
2L
4] consists of dinuclear motifs of pseudo octahedral {CoO
6} and tetrahedral {CoO
4} linked through μ-carboxylate ligands. The temperature dependence of magnetic susceptibility revealed the presence of ferromagnetic interaction between the adjacent tetrahedral Co(II) and octahedral Co(II) ions.
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Yuning Chang, Qun Xu
2002 Volume 31 Issue 10 Pages
1008-1009
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In this study we focus on the influence of the absorbed supercritical (SC) CO
2 on the surface aggregation structure of the substrate polymer, nylon1212. Both virgin and treated nylon1212 were measured or observed with wide-angle X-ray diffraction (WAXD), micropolariscope and SEM. A novel phenomenon, SC CO
2-induced epitaxy (crystalline overgrowth) was discovered and the mechanism is deduced.
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Seiji Kosemura
2002 Volume 31 Issue 10 Pages
1010-1011
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Hydroxamic acids (4-hydroxy-1,4-benzoxazin-3-ones) and 4-methylthio-3-butenyl isothiocyanate as repellents against earthworms, have been isolated from UV-B damaged maize (
Zea mays L.) seedlings and roots of Japanese radish (
Raphanus sativus L.).
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Li-Jun Wang, Chang-Wen Guo, Xi-Dan Huang, Quan-Zhi Li
2002 Volume 31 Issue 10 Pages
1012-1013
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High Si-containing SAPO-11 molecular sieve with enhanced SAPO domain has been successfully synthesized with diethylamine template by modified hydrothermal method. The sample was characterized with XRD, EDX, N
2 adsorption, SEM,
29Si MAS NMR, NH
3-TPD. Bifunctional hydroconversion of
n-dodecane on Pd/SAPO-11 catalyst showed high hydroisomer conversion and selectivity compared with the results of catalyst prepared by the normal method. The enhanced SAPO domain improves the catalytic results.
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Guo Dong, Pang Ke-Liang, Duan Chun-Ying, Zhao Yong-Gang, Meng Qing-Jin
2002 Volume 31 Issue 10 Pages
1014-1015
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Novel triple-stranded binuclear helical complexes of silver(I) with various coordination modes are generated from the simple imine-based rigid ligand L (pyridylmethylketazine) via self-assembly in the presence of concentrate silver salts upon crystallization.
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Masayuki Nihei, Norihisa Hoshino, Tasuku Ito, Hiroki Oshio
2002 Volume 31 Issue 10 Pages
1016-1017
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Reactions of MnCl
2·4H
2O with 2-(5-bromo salicylideneamino)-1-propanol (H
2(5-Br-sap)) under aerobic conditions and with 2-salicylideneamino-1-propanol (H
2(sap)) under strict anaerobiosis yielded tri and tetranuclear manganese complexesof [Mn
III3(μ
3-O)(5-Br-sap)
3(H
2O)
3]Cl·5.5H
2O (
1) and [Mn
II4(sap)
4(MeOH)
4]·2H
2O (
2), respectively; the magnetic susceptibility measurements revealed intramolecular antiferromagnetic interactions being operative in both compounds, of which exchange coupling constant for
2 was estimated to be −1.6 cm
−1 (
H=−2
JΣ
Si·
Sj).
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Takuya Nakashima, Nobuo Kimizuka
2002 Volume 31 Issue 10 Pages
1018-1019
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Dialkyldimethylammonium amphiphiles form stable bilayer membranes in the ether-containing ionic liquids. Dark field optical microscopy indicates the formation of vesicles above the phase transition temperature.
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Jong Wook Bae, Jae Sung Lee, Kyung Hee Lee, Eun Joo Jang
2002 Volume 31 Issue 10 Pages
1020-1021
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Liquid-phase hydrodechlorination of CCl
4 over supported Pd or Pt catalysts in the presence of C
2H
5OH gave not only the selective synthesis of CHCl
3, but also conversion of C
2H
5OH to diethyl carbonate (DEC) and 1,1-diethoxyethane (acetal; DEE).
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Seiya Tsujimura, Kenji Kano, Tokuji Ikeda
2002 Volume 31 Issue 10 Pages
1022-1023
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A new redox polymer containing Os (
E °′=−0.15 V vs Ag|AgCl) was designed and synthesized as an efficient mediator of diaphorase-catalyzed electrochemical oxidation of NADH and as a support to immobilize enzyme(s) on electrode surfaces. The electrochemical characteristics of the polymer and its application to biosensors and bioanodes of biofuel cells are briefed.
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Ye-Yan Qin, Yuan-Gen Yao, Yao Kang, Zhao-Ji Li, Yu-Biao Chen
2002 Volume 31 Issue 10 Pages
1024-1025
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A neutral molybdenum cluster Mo
3(μ
3-S)(μ-O)
3(DTP)
4(H
2O) (DTP=diethyl dithiophosphate) is rationally synthesized and structurally characterized. Its molecules are linked via hydrogen bonding and supramolecular interactions, leading to an infinite one-dimensional chain structure.
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Sadamu Nagahama, Akikazu Matsumoto
2002 Volume 31 Issue 10 Pages
1026-1027
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The topochemical polymerization of the 1,3-diene compounds such as the ammonium and ester derivatives of the muconic and sorbic acids is induced by heating without any irradiation in the crystalline state.
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M. Jasim Uddin, Susumu Kokubo, Katsuhiro Ueda, Kiyotake Suenaga, Daisu ...
2002 Volume 31 Issue 10 Pages
1028-1029
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Two unique cytotoxic diterpene alkaloids, haterumaimides J and K, were isolated from the ascidian
Lissoclinum sp. Their structures were elucidated by an extensive analysis of spectral data. Haterumaimides J and K showed potent cytotoxicity against P388 cells, with IC
50 values of 0.23 ng/mL and 0.45 ng/mL, respectively.
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Genta Harada, Hiromi Sakurai, Michio M. Matsushita, Akira Izuoka, Tada ...
2002 Volume 31 Issue 10 Pages
1030-1031
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π-Radical thiol-derivatized gold nano-particles with the average diameter of 4.1 nm were isolated, and about one hundred π-radical ligands were found to be chemisorbed on the nano-particle. The solid sample of the nano-particles showed an extremely broadened ESR signal with the peak-to-peak derivative line width (Δ
Hpp) of 30 mT at 300 K.
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Yasuo Yokoyama, Shuichi Takizawa, Masato Nanjo, Kunio Mochida
2002 Volume 31 Issue 10 Pages
1032-1033
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Alcohols, amines, and thiols protected with a
p-cyanobenzyl group can be easily and quantitatively deprotected using triethylgermyl sodium under mild conditions.
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Shuo Wei, Jun Lu, Liling Zeng, Weichao Yu, Yitai Qian
2002 Volume 31 Issue 10 Pages
1034-1035
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Pure InP nanocrystals were synthesized in aqueous ammonia (potassium stearate, 0.01 mol·L
−1) at 170 °C for 12 h. The X-ray diffraction pattern was of the cubic phase with lattice constant
a=5.8523±5×10
−4 Å. The secondary particles with 180 nm consisting of fine InP NCs with 15 nm in size were found from the transmission electron microscope images. The optimal reaction conditions were searched, and a possible reaction mechanism was discussed.
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N. Ren, Y. Tang, Y. J. Wang, S. H. Hu, A. G. Dong, W. M. Hua, Y. H. Yu ...
2002 Volume 31 Issue 10 Pages
1036-1037
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Mesoporous zirconium phosphate-phenylphosphonate has been prepared in the presence of cetyltrimethylammonium bromide as the template. The phenyl groups on the pore wall could be easily sulphonated or brominated to endow the sample with more functionalities.
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Partha P. Baruah, Sunil Gadhwal, Dipak Prajapati, Jagir S. Sandhu
2002 Volume 31 Issue 10 Pages
1038-1039
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Various substituted 3,4-dihydropyrimidin-2(1
H)-ones were synthesised in one-pot reaction of aldehydes, β-ketoesters and urea using LiBr in tetrahydrofuran in excellent yields without any side reactions as observed by Biginelli and others.
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Miyuki Ishizaki, Hiroshi Satoh, Osamu Hoshino
2002 Volume 31 Issue 10 Pages
1040-1041
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Intramolecular Pauson-Khand reaction of various 2-aryl-1-hepten-6-ynes and its aza-derivative (acyclic
exo-methylene compounds) efficiently produced 1-aryl-bicyclo[3.3.0] octenones and azaoctenone bearing quaternary carbon center in good yields. The reaction of 1,7-enynes was also investigated.
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Toshiyuki Hamura, Nobuyuki Kawano, Shinsuke Tsuji, Takashi Matsumoto, ...
2002 Volume 31 Issue 10 Pages
1042-1043
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Various functionalized cyclooctadienones are accessible in high yields by the reaction of alkenylcyclobutenones with alkenyllithiums.
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Daisuke Yoshioka, Masahiro Mikuriya, Makoto Handa
2002 Volume 31 Issue 10 Pages
1044-1045
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The three-dimensional coordination polymers, [{Ru
2(piv)
4}
3(H
2O)M(CN)
6] [M=Fe (
1) and Co (
2), Hpiv = pivalic acid], have been synthesized and characterized by X-ray crystallography, electronic spectroscopy and magnetic susceptibility measurement.
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Masaaki Ohba, Takashi Iwamoto, Hisashi Okawa
2002 Volume 31 Issue 10 Pages
1046-1047
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Two-dimensional cyanide-bridged M
IIINi
II bimetallic assembies, [Ni(1,1-dmen)
2]
2[M(CN)
6]tfs·3.5H
2O (M=Fe (
1), Co (
2); 1,1-dmen = 1,1-dimethylethylenediamine, tfs
− = trifluoromethanesulfonate ion), have been prepared. Each compound forms a 2-D grid structure extended by the M-CN-Ni linkages. Compound
1 shows a ferromagnetic ordering below
Tc of 8.9 K based on a ferromagnetic interaction between low-spin Fe
III and high-spin Ni
II. MCD spectra for
1 show a strong Faraday ellipticity at ∼470 nm associated with the LMCT band of the Fe–CN bond. Its intensity increases with lowering temperature due to ferromagnetic ordering over the lattice. Compound
2 is paramagnetic and shows no remarkable Faraday effect.
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Hideki Fujiwara, Emiko Fujiwara, Hayao Kobayashi
2002 Volume 31 Issue 10 Pages
1048-1049
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Synthesis, structure and physical properties of novel π-electron donors containing a TTF moiety and a PROXYL radical within a single molecule designed for the development of magnetic conductors are reported. We also clarified the physical properties of the iodine complex of the ethylenedithio derivative.
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Masayasu Iida, Shiho Ohkawa, Hua Er, Norie Asaoka, Hisao Yoshikawa
2002 Volume 31 Issue 10 Pages
1050-1051
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Palladium(0) nanoparticles were obtained in high densities from a novel type reverse micelle (or W/O microemulsion) of bis(
N-octylethylenediamine)palladium(II) chloride (=[Pd(oct-en)
2]Cl
2)/water/chloroform (=CHCl
3). The shape of the nanoparticles was largely affected by the phase of the additive, sodium boron hydride (=NaBH
4) reductant, and by the replacement of a small amount of water with methanol.
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Li-Juan Zhang, Ji-Qing Xu, Zhan Shi, Xiao-Li Zhao, Tie-Gang Wang
2002 Volume 31 Issue 10 Pages
1052-1053
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This novel crystal structure of the coordination polymers {[M(μ
8-bta)
1/2(μ
2-C
2O
4)
1/2]·(H
2O)
4}
n (
1: M=Co
III;
2: M=Fe
III; bta = benzene-1,2,4,5-tetracarboxylate) is based on both bta and oxalate as bridging ligands and contains helical chains composed of left-handed and right-handed helices interlaced in pairs.
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-
Masaaki Ichinohe, Yuichi Hayata, Akira Sekiguchi
2002 Volume 31 Issue 10 Pages
1054-1055
Published: 2002
Released on J-STAGE: October 05, 2002
JOURNAL
RESTRICTED ACCESS
The reaction of bis[bis(trimethylsilyl)methyl]germylene with tris(4-
tert-butylphenyl)methylium TPFPB
− in toluene produced an unexpected germyl cation, {[(Me
3Si)
2CH]Me
2Si}{[(4-
tert-BuC
6H
4)
3C]Me
2Si}-HCMe
2Ge
+, which was formed through several consecutive rearrangements of the methyl, bis(trimethylsilyl)methyl, and triarylmethyl groups.
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-
Debao Wang, Dabin Yu, Mingwang Shao, Weichao Yu, Yitai Qian
2002 Volume 31 Issue 10 Pages
1056-1057
Published: 2002
Released on J-STAGE: October 05, 2002
JOURNAL
RESTRICTED ACCESS
Crystalline Sb
2Se
3 nanowires with a typical width of 30 nm and length up to 8 μm were synthesized through the reaction between SbCl
3 and elemental selenium with sodium sulfite as reducing reagent in diethylene glycol solution. The composition of the products was identified using EDX and XPS. The possible reaction mechanism was also discussed.
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