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Hiroshi Fujii, Tetsuhiko Yoshimura, Hitoshi Kamada
1996 Volume 25 Issue 8 Pages
581-582
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A binuclear complex,
1, involving copper and heme complexes is synthesized and characterized by paramagnetic
1H-NMR, FAB mass, and ESR spectroscopies. These measurements indicate a fairly weak magnetic interaction between iron and copper ions when a bridege ligand is absent.
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Makoto Negishi, Kiyoshi Kanie, Tomiki Ikeda, Tamejiro Hiyama
1996 Volume 25 Issue 8 Pages
583-584
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Photochromic antiferroelectric liquid crystals containing a diazene moiety were synthesized for the first time, and their photochemical switching behaviors were studied.
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Keiji Kobayashi
1996 Volume 25 Issue 8 Pages
585-586
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The purpose of this work is to clarify the relationship between some of the properties of MOS (metal, oxide, silicon) capacitors passivated by Ba(PO
3)
2-Al(PO
3)
3-B
2O
3 glasses and the hydroxyl contents of the glasses. When substitution of Al(PO
3)
3 for Ba(PO
3)
2 progressively decreased the OH
− absorption intensity, the C-V (capacitance-voltage) curve shift, ΔV
G in the MOS capacitors decreased.
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Yasushi Yokoyama, Toshiya Sagisaka, Yukitami Mizuno, Yayoi Yokoyama
1996 Volume 25 Issue 8 Pages
587-588
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While the introduction of a methoxy group to C-5 of the indole ring of the indolylfulgide caused a large bathochromic shift of the absorption maximum of its colored form, introduction of a methoxy group to C-6 resulted in enlargement of the molar absorption coefficient of the colored form. The 5,6-dimethoxy-substituted indolylfulgide has both properties.
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Nobuhiro Takano, Yutaka Kawakami, Noboru Takeno
1996 Volume 25 Issue 8 Pages
589-590
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The catalytic polymer film electrode which was coated with poly[
N-(5-hydroxypentyl) pyrrole] film on carbon materials and incorporated palladium metal microparticles in film was prepared. By use of the electrode the electrocatalytic hydrogenation of acetylenes in organic solvent-HCl buffer solution led to the efficient formation of ethanes in high current efficiencies.
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Keiji Nagai, Tomokazu Iyoda, Akira Fujishima, Kazuhito Hashimoto
1996 Volume 25 Issue 8 Pages
591-592
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Magnetic properties of one-dimensional charge transfer complex between manganese
meso-tetraphenylporphyrin (MnTPP) and tetracyanoethylene (TCNE) were investigated as its plate crystals. Strong magnetocrystalline anisotropy was observed in the field and the temperature dependences of magnetization. Magnetic phase transition was observed as 24 K and 27 K under 0.5 T of magnetic field along a- and b-axes, and c-axis, respectively. Either temperature was higher than that (18 K) of powder sample reported previously.
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Hiroyuki Higuchi, Makoto Takeuchi, Juro Ojima
1996 Volume 25 Issue 8 Pages
593-594
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Mono-, di-, and trimetallic Pd(II) complexes of the etheno-bridge porphyrin trimer
1 were prepared. It was found that the metalation of
1 first occurred in the inner porphyrin ring. The trimetallic Pd(II) trimer
6 exibited splitting of the Soret band and complete disappearance of the weak bands ranging from 600 to 1000 nm unlike the corresponding free-base and Ni(II) porphyrin trimers.
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Jun’ichi Uenishi, Atsushi Sohma, Osamu Yonemitsu
1996 Volume 25 Issue 8 Pages
595-596
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SnCl
4 mediated C-glycosidation reactions of ethyl 2-deoxy-4-thioribofuranoside with silylated nucleophiles were described. α-Anomer was the major product formed in the reactions. The stereochemical course was found to be similar to that of ethyl 2-deoxyribofuranoside.
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Fumihiko Hasumi, Chitoku Teshima, Ichiro Okura
1996 Volume 25 Issue 8 Pages
597-598
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Xylitol synthesis by reduction of xylulose was performed by the combination of NADH regeneration system and xylulose reductase. The conversion of xylulose to xylitol was 98% after 34 h and the turnover number of NAD was 1017.
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Naoya Takeda, Takamitsu Imai, Makoto Irisawa, Jun Sumaoka, Morio Yashi ...
1996 Volume 25 Issue 8 Pages
599-600
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The most active catalysts for DNA hydrolysis so far have been obtained by using the synergetic cooperation of the cerium(IV) ion with the praseodymium(III) ion. The pseudo first-order rate constant for the hydrolysis of thymidylyl(3′-5′)thymidine by the 2:1 combination is 10 times as great as that by the cerium(IV) ion.
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Masami Yonemura, Yukiko Matsumura, Masaaki Ohba, Hisashi Okawa, David ...
1996 Volume 25 Issue 8 Pages
601-602
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Phenol-based dinucleating macrocycles possessing two dissimilar N(amine)
2O
2 and N(imine)
2O
2 metal-binding sites, sharing two phenolic oxygens, have been obtained as mononuclear Cu(II) complexes, capable of incorporating a second metal ion to provide homo- and hetero-dinuclear complexes.
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Zhen-He Wang, Takuji Hirose, Kazuhisa Hiratani, Yanyan Yang, Kazuyuki ...
1996 Volume 25 Issue 8 Pages
603-604
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The structural characterization of a dithiaphenanthrolinophane was performed. The stable structure in the crystalline state was found to be different from that in solution. The intermolecular face-to-face and edge-to-face π-π interactions of the aromatic rings play important roles in stabilization of the crystalline state conformation.
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Tadashi Mizutani, Akihiko Tobisawa, Hisanobu Ogoshi
1996 Volume 25 Issue 8 Pages
605-606
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Amphiphilic prophyrins having a poly(ethylene oxide) chain were prepared. The transfer rates of the amphiphilic porphyrin from benzene to water were biphasic and were accelerated by lowering temperature or by the addition of SDS. Kinetic data suggest that (1) conformational changes of the amphiphilic prophyrin to a polar form give rise to the faster rate at low temperature, and (2) adsorption to the interface leads to the biphasic kinetics.
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Akio Katsuki, Ryoko Tokunaga, Shin-ichi Watanabe, Yoshifumi Tanimoto
1996 Volume 25 Issue 8 Pages
607-608
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The crystal growth of benzophenone was observed under high magnetic fields. In the presence of a magnetic field (8 T) the benzophenone crystal, which was diamagnetic, aligned in such a way that its crystal
c-axis was perpendicular to the direction of the magnetic field. This phenomenon seemed attributable to the anisotropic diamagnetic susceptibility of the crystal.
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Kentaro Okuma, Gen Koda, Seiji Okumura, Atsuyoshi Ohno
1996 Volume 25 Issue 8 Pages
609-610
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The reaction of selenobenzophenones with alkyllithiums or Grignard Reagents exclusively affords symmetrical tetraarylethylenes as selenophilic products. The reaction might proceed through episelenide (selenirane) intermediates.
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Masakazu Yoshikawa, Jun-ichiro Izumi, Toshio Kitao
1996 Volume 25 Issue 8 Pages
611-612
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Molecularly imprinted polymeric membranes, bearing tetrapeptide derivative H-Asp(OcHex)-Ile-Asp(OcHex)-Glu(OBzl)-CH
2-, recognized N-α-acetyl-
L-tryptophan from recemic N-α-acetyltryptophans. Electrodialysis of racemic N-α-acetyltryptophans gave permselectivity toward
L-isomer, reflecting adsorption selectivity.
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Ken-ichi Okamoto, Norimitsu Yasugi, Takashi Kawabata, Kazuhiro Tanaka, ...
1996 Volume 25 Issue 8 Pages
613-614
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Amine-modified polyimide membranes were prepared by immersing methyl-brominated polyimide membranes into aqueous amine solutions. They displayed high performance for CO
2/N
2 separation especially in the presence of water vapor; for example, permeability to CO
2 of 36 Barrer and separation factor of 81 at 2 atm, 298 K and relative humidity of 75%.
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Shigeru Otsuka, Kiyoshi Saito, Ken-ichi Morita
1996 Volume 25 Issue 8 Pages
615-616
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When polyaniline powder was added to water superoxide generated. The formation of superoxide was confirmed by using ESR, amperometry and enzyme techniques.
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Jun Kawakami, Yuko Komai, Shoei Ito
1996 Volume 25 Issue 8 Pages
617-618
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1,
n -Bis(1-naphthylcarboxy)oxaalkanes (
1NPnN, n = 1, 2, 3, 4, 5, 6) as fluorescent sensors by excimer emission for metal ions were synthesized, and the complexation of
1NPnN with alkali and alkaline earth metal ions in acetonitrile was investigated. Alkaline earth metal cations suppress or enhance the fluorescence remarkably, depending on the cation size and the length of polyether chain.
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Mitsuru Ito, Tadanobu Sato, Ken Sakai, Taro Tsubomura
1996 Volume 25 Issue 8 Pages
619-620
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A new triple-decker type rubidium(I) complex containing 18-membered macrocyclic ligands has been synthesized and characterized by X-ray crystallography. Linear stacks of the triple-decker units have been revealed in the crystal.
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Jun-ichi Yamaguchi, Masaaki Ueki
1996 Volume 25 Issue 8 Pages
621-622
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Treatment of
L-
N-protected 2-amino-5-bromopentanoic acid ester, which was prepared from protected
L-glutamic acid, with sodium hydride in tetrahydrofuran (THF) proceeded to give the corresponding protected
L-proline in high yield. On the other hand, the reaction of 2-aminobutyric acid derivative with sodium hydride gave the 1-aminocyclopropane-1-carboxylic acid derivative.
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De-Kui Qing, Kiminori Itoh, Masayuki Murabayashi
1996 Volume 25 Issue 8 Pages
623-624
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A coupling wave optical waveguide sensor was proposed, and realized by combining the ion-exchange and the sol-gel methods. The new optical waveguide (OWG) sensor is based on a stacked slab optical waveguide codirectional coupler, and proved to be advantageous over conventional OWG sensors. A gas sensor fabricated as an example easily detected 5 ppm H
2S.
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Xingjiang Liu, Toshiyuki Momma, Tetsuya Osaka
1996 Volume 25 Issue 8 Pages
625-626
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Isotropic high density graphite (HDG) was used as the polarizable electrode of electric double layer capacitors (EDLC) with a solid electrolyte consisting of PEO/LiClO
4([EO]/[Li
+] = 8:1) at 80 °C or with a gel electrolyte consisting of PEO/PC/LiClO
4([EO]/[PC]/[Li
+] = 8:8:1) at room temperature. The all-solid state capacitor with HDG electrodes works satisfactorily as a EDLC with a relatively high capacitance, as well as the EDLC with gel electrolyte PEO/PC/LiClO
4. These EDLCs with solid polymer electrolyte PEO/LiClO
4 and gel electrolyte PEO/PC/LiClO
4 show good charge/discharge behavior when charged to 1.5 V at 80 °C and 20 °C, respectively.
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Kohji Watanabe, Koki Tanaka, Masami Hasebe
1996 Volume 25 Issue 8 Pages
627-628
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An ESR spectrum was observed for brownish rings formed at the surface of quartz crucible used in Cz-Si crystal growth. A signal assignable to the E′-center has been detected in the brownish ring. This result is explained by the dissolution of oxygen atoms of vitreous quartz crucible into liquid silicon.
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Teruaki Mukaiyama, Hiromi Uchiro, Noriyuki Hirano, Tatsuya Ishikawa
1996 Volume 25 Issue 8 Pages
629-630
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Stereoselective C-glycosylation of 2-deoxyribose derivatives having 3-
O-thiocarbamoyl directing group with carbon nucleophiles was successfully carried out by using SiCl(OTf)
3 as an activator. Several 2-deoxy-β-C-ribofuranosides which can be easily converted to 2′-deoxy-C-nucleosides were obtained in good yields with high stereoselectivities.
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Yasuyuki Hoshino, Masakazu Iwamoto
1996 Volume 25 Issue 8 Pages
631-632
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The titled absorption band was attributable to ν
sym of a dicarbonyl species adsorbed on a Cu
+ ion. The monocarbonyl species at 2158 cm
−1 and the dicarbonyl species at 2177 and 2151 cm
−1 have reversibly changed each other dependent on the partial pressure of CO.
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Shinsei Sayama, Yutaka Inamura
1996 Volume 25 Issue 8 Pages
633-634
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The reagent NaBH
4-SbBr
3 was found to be chemoselective for the reductive debromination of aromatic α-bromo carbonyl compounds and 2,3-dibromo-1,4-butanediones.
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P. Kumar, K. C. Gupta
1996 Volume 25 Issue 8 Pages
635-636
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Simple and high yielding methods for the synthesis and deprotection of S-trityl and S-acylhexanols and appropriately protected 2′-deoxynucleosides in solvent and dry media conditions are described which occur under mild conditions using microwave irradiation.
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Hiroshi Yoshida, Takeshi Tanaka, Hiroatsu Matsuura
1996 Volume 25 Issue 8 Pages
637-638
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The gas-phase infrared spectra of 1,2-dimethoxyethane measured at various temperatures gave a value of 0.31 ± 0.04 kcal mol
−1 for the energy difference between the
trans–gauche–gauche′ and
trans–trans–trans conformers, the latter being more stable. This value is in good agreement with the results of high-level
ab initio calculations. The present experimental finding gives definitive evidence for the importance of an intramolecular 1,5-CH···O interaction in the stabilization of the
trans–gauche–gauche′ conformer in the gas phase.
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Hitoshi Tamiaki, Takayuki Kubota, Rikuhei Tanikaga
1996 Volume 25 Issue 8 Pages
639-640
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Zinc complexes of cyclotetrapyrroles possessing 3
1-hydroxyl and 13
1-keto carbonyl groups were prepared. The electronic and circular dichroism absorption spectra showed that these compounds self-aggregated in less polar organic solvents to form oligomers, which are good models for natural aggregates of bacteriochlorophyll-
d in photosynthetic antennae.
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Yasuo Nakao, Chikako Mori, Wasuke Mori, Takeshi Sakurai, Keiji Matsumo ...
1996 Volume 25 Issue 8 Pages
641-642
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The dinuclear nickel(II) complexes [Ni
2(L
1)(OAc)(MeOH)
2](ClO
4)
2·H
2O·MeOH
1 and [Ni
2(L
1)(OAc)(H
2O)
2](ClO
4)
2 2 (HL
1 =
N,
N,
N′,
N′-tetrakis[(1-ethyl-2-benzimidazolyl)methyl]-2-hydroxy-1,3-diaminopropane) were prepared. The complex
1 turns to
2 upon exposure to the air. The crystal structure of
1 and the magnetic and spectroscopic properties of
2 were determined.
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Wu Feng, Takashi Sumiyoshi, Yuichiro Yamashita, Toshihiko Shindo, Sada ...
1996 Volume 25 Issue 8 Pages
643-644
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The photochemistry of π-complexes of the chlorine atom with a series of methyl- and ethyl-substituted benzenes has been investigated using combined pulse radiolysis-laser flash photolysis techniques. Direct photolysis of π-complexes in carbon tetrachloride causes photobleaching by intramolecular hydrogen abstraction with quantum yields of 0.05–0.15 depending on the substituents but not on the positions of them.
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Kyoko Takai, Keisuke Umakoshi, Yoichi Sasaki
1996 Volume 25 Issue 8 Pages
645-646
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A mixed-metal trinuclear complex, (Pr
4N)
2[MoO(WS
4)
2], has been prepared for the first time in pure form and characterized by several physical methods, including X-ray crystallography.
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Hitomi Suzuki, Tadashi Mori
1996 Volume 25 Issue 8 Pages
647-648
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Ozone-mediated reaction of bicumene with nitrogen dioxide in dichloromethane at low temperature results in almost complete mesolytic cleavage of the hydrocarbon, accompanied by little or no nuclear nitration, in accordance with operation of the electron transfer process involving the nitrogen trioxide as initial electrophile.
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Nagavelli Prabhakar Reddy, Nami Choi, Shigeru Shimada, Masato Tanaka
1996 Volume 25 Issue 8 Pages
649-650
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[1]Silaferrocenophanes (
1) underwent dimerization reaction in the presence of palladium-trialkylphosphine complexes. A mechanistically-related [2]platinasilaferrocenophane complex was formed when
1 was treated with Pt(PEt
3)
3.
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Takeshi Sakurai, Junya Takahashi, Hong-wei Huang
1996 Volume 25 Issue 8 Pages
651-652
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The azide-treated laccase and ascorbate oxidase gave the asymmetric stretching bands (
va) at 2056 and 2054 cm
−1 in the FT-IR spectra, respectively.
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Tetsuya Osaka, Kako Ogasawara, Takehumi Okumura, Shinichi Komaba
1996 Volume 25 Issue 8 Pages
653-654
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By using electrolpolymerized poly(N-vinylcarbazole) (PVCz) as a hole injecting film on porous n-silicon (PS), an all-solid state multicolor EL device on the basis of PS was able to be fabricated. The electroluminescence (EL) from the PVCz/PS device under forward bias was enhanced as compared with the device without PVCz film. An EL peak-shift of this device was observed with an increase in applied forward bias.
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Takayoshi Fujii, Hiroki Kusanagi, Naomichi Furukawa
1996 Volume 25 Issue 8 Pages
655-656
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4,8,10-Trithiadibenzo[
cd,ij]azulene 8-oxides were prepared and their photolysis provided a convenient procedure to yield the corresponding aldehydes and ketones together with 4,8,9-trithiacyclopenta[
def]phenanthrene.
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Véronique Rosilio, Geneviéve Albrecht, Adam Baszkin, Yuk ...
1996 Volume 25 Issue 8 Pages
657-658
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Monolayers of poly(ethylene oxide)-bearing lipids and their mixed monolayers with dimyristoylphosphatidylcholine at the air-water interface was investigated using surface pressure measurements. The surface pressure-area relationship revealed that the poly(ethylene oxide) moiety length significantly affected the interaction among the lipid molecules. This study provided a precise picture of the lipid membrane-water interface.
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Yoriko Sonoda, Yasuzo Suzuki
1996 Volume 25 Issue 8 Pages
659-660
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trans,trans,trans-1,6-Bis(
p-formylphenyl)-1,3,5-hexatriene underwent stereoselective photoisomerization to give its
cis,trans,trans isomer regardless of the solvent polarity. Quantum yields of
trans,trans,trans-to-
cis,trans,trans isomerization decreased dramatically with decreasing solvent polarity, whereas those of the reverse reaction gradually increased. This led to the
cis,trans,trans-to-
trans,trans,trans ‘one-way’ isomerization in nonpolar solvents.
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Hiroaki Yonemura, Kei Ohishi, Taku Matsuo
1996 Volume 25 Issue 8 Pages
661-662
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Modified electrodes were fabricated by depositing a monolayer containing porphyrin-viologen linked compound on ITO electrodes by Langmuir-Blodgett method. Visible light irradiation on the modified electrodes afforded stable anodic photocurrents. The photocurrents clearly increased in the presence of magnetic fields. The magnetic field effects on photocurrents, as observed for the first time, are ascribed to the contribution of triplet radical pairs.
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Yumiko Kobayashi, Noriharu Nagao, Seichi Okeya, Yutaka Fukuda
1996 Volume 25 Issue 8 Pages
663-664
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[Pd
2(hfac)
2(μ-MeO)
2] (
1) (hfac
− = 1,1,1,5,5,5-hexafluoro-2,4-pentanedionate) reacts with 1,1,2,2-tetraacetylethanediide (H
2taet) to give a dinuclear mixed ligand complex [Pd
2(taet)(hfac)
2] (
2) having bridging taet
2− ligand. The terminal hfac
− ligands in the dinuclear complex [Pd
2(taet)(hfac)
2] (
2) are replaced easily by acac
− to obtain [Pd
2(taet)(acac)
2] (
3) (acac
− = 2,4-pentanedionate). The structures of the two complexes obtained were determined by X-ray analysis.
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Katsumi Chikama, Kiyoharu Nakatani, Noboru Kitamura
1996 Volume 25 Issue 8 Pages
665-666
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An electron transfer (ET) reaction between ferrocene in a single oil droplet and hexacyanoferrate (III) in the surrounding water phase was investigated by laser trapping, spectroscopic, and electrochemical techniques. A droplet-size dependence of the ET reaction was studied as a function of a Galvani potential difference (Δ
0WΦ) between the droplet and water phases. The ET rate was shown to be highly dependent on Δ
0WΦ.
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Atsushi Aoki, Masakazu Nakaya, Tokuji Miyashita
1996 Volume 25 Issue 8 Pages
667-668
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Langmuir-Blodgett (LB) films of copolymer (
1) consisting of
N-dodecylacrylamide (DDA), and cross-linkable group,
N-ω-acryloylundecyl-4-vinylpyridinium salt has been prepared. On UV irradiation, the cross-linking reaction occurs efficiently giving uniform two dimensional cross-linked polymer LB films with a high stability against solvents. The photolithographic property of the LB film are applicable to a new type of high resolution negative photoresists.
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Sunggak Kim, Jung Yun Do, Kwang Min Lim
1996 Volume 25 Issue 8 Pages
669-670
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1,5-Ph
3Ge and 1,6-Bu
3Sn group transfer from enoxy oxygen to alkoxy oxygen are observed in radical reaction of keto epoxides and keto oxetanes, respectively.
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Kiyoshi Honda, Ichiro Yoshii, Seiichi Inoue
1996 Volume 25 Issue 8 Pages
671-672
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Highly stereoselective elongation of a functionalized
E isoprene unit on the
Z terminal methyl of prenol was achieved by the
N-ylide rearrangement of
N-tiglyl-β-methallyldimethyl ammonium salt. (
E,
Z)-Rearrangement product was converted into 13-
cis-retinol
via useful conjugated triene isoprenoid synthon.
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Iwao Mogi, Hiroshi Kikuya, Kazuo Watanabe, Satoshi Awaji, Mitsuhiro Mo ...
1996 Volume 25 Issue 8 Pages
673-674
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In order to investigate the magnetic field effects on chemical feedback systems, the oscillation behavior of the anodic currents of a zinc electrode was studied in an 8 mol dm
−3 NaOH aqueous solution under magnetic fields using a liquid-helium-free large-bore superconducting magnet.
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Mayumi Murata, Masaaki Kojima, Masakazu Kita, Setsuo Kashino, Yuzo Yos ...
1996 Volume 25 Issue 8 Pages
675-676
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A stable sulfonato complex, [Co{OS(O)
2CH
2CH
2NH
2-
O,
N}(en)
2]
2+, was prepared upon oxidation of [Co{OS(O)CH
2CH
2NH
2-
O,
N}(en)
2]
2+ in acid media. This sulfonato complex was resolved by SP-Sephadex column chromatography (eluent: 0.1 mol dm
−3 Na
2[Sb
2{(+)-tartrate}
2]). The absolute configuration of the slower eluted (−)
589-isomer was determined to be Δ by the X-ray method.
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Nobuko Komatsuzaki, Mitsunari Uno, Hidetoshi Kikuchi, Shigetoshi Takah ...
1996 Volume 25 Issue 8 Pages
677-678
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The first enantiomerically pure planar-chiral cyclopentadienyl-ruthenium complexes, [Cp
nRu(benzene)]PF
6, were synthesized (Cp
nH; unsymmetricaly trisubstituted cyclopentadiene), and by a photo reaction with CH
3CN converted to [Cp
nRu(CH
3CN)
3]PF
6, which was transformed into planar-chiral [Cp
nRu(arene)]PF
6 by a ligand exchange reaction.
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Takakazu Yamamoto, Bang-Lin Lee, Yutaka Saitoh, Tetsushi Inoue
1996 Volume 25 Issue 8 Pages
679-680
Published: 1996
Released on J-STAGE: March 01, 2006
JOURNAL
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Dichroism of photoluminescence PL of linear poly(2,3-di-
p-tolylquinoxaline-5,8-diyl) indicates that the PL has a transition moment along the direction of the polymer main chain and an energy transfer takes place in the polymer. Poly(phenanthroline-3,8-diyl) and poly(pyridine-2,5-diyl) give analogous results and show a strong tendency to give excimer-type emission in both PL and electroluminescence.
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