-
Yoshiaki Matsuo, Kazuki Nakajima, Yosohiro Sugie
2009 Volume 38 Issue 12 Pages
1130-1131
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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Magadiite containing covalently attached pyrene chromophores at a high concentration was prepared by the reaction between silylated magadiite possessing amino groups and 1-pyrenebutanoic acid succinimidyl ester. The monomeric pyrene content without aggregation reached a very high value of 0.57 pyrene/nm
2 in the nanosheet state.
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Hiroto Yoshida, Yasuhiro Mimura, Joji Ohshita
2009 Volume 38 Issue 12 Pages
1132-1133
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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Supplementary material
A variety of chlorotriazines were found to undergo insertion of arynes at their carbon–chlorine bonds, leading to formation of triarylated triazines in a straightforward manner.
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Masashi Sonoyama, Takashi Kikukawa, Yasunori Yokoyama, Makoto Demura, ...
2009 Volume 38 Issue 12 Pages
1134-1135
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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The photocycle of bacteriorhodopsin (bR) reconstituted into dimyristoylphosphatidylcholine vesicles was investigated with transient visible absorption spectroscopy. The measured time-resolved difference spectra indicated that two substates of the M intermediate with almost the same absorption maximum were observed in the gel state, whereas the spectrum of M showed a splitting into an early and a late component shifted by approximately 15 nm in the liquid crystalline phase, suggesting disassembly of bR molecules induces remarkable structural changes around the retinal pocket of the late M intermediate responsible for switching protein conformation from a proton release form to a proton uptake form.
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Masatoshi Kawahata, Takatsugu Endo, Hiroko Seki, Keiko Nishikawa, Kent ...
2009 Volume 38 Issue 12 Pages
1136-1137
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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The crystal structure of an ionic liquid, 1-isopropyl-3-methylimidazolium bromide ([
i-C
3mim]Br), was studied using X-ray crystallographic analysis. The structures of three independent conformers of the isopropyl moiety were determined. Although the three conformers are classified into a group and their structures differ from the conformer described by Golovanov et al., the crystal structures are similar with respect to the inter-ionic interactions between [
i-C
3mim]
+ and Br
−. This polymorphic property of the ionic liquid is interpreted as arising because the enthalpy gain from the stronger Coulomb interactions determines a tight framework for the arrangement of Br
− and the more positive moiety of the imidazolium ring. Thus, the isopropyl moiety is able to occupy the space within the framework in various conformations.
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Wanhua Lei, Qianxiong Zhou, Zhaobo Li, Xuesong Wang, Baowen Zhang
2009 Volume 38 Issue 12 Pages
1138-1139
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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Supplementary material
Though both TiO
2 and ascorbic acid are noncytotoxic in the dark or under visible irradiation, ascorbic acid-modified TiO
2 nanoparticles were found to exhibit efficient DNA and cancer cell damage ability under visible light irradiation, opening a new pathway for developing highly efficient PDT sensitizers.
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Huijing Zhang, Yonggang Hu, Yongqian Wang, Ping Zhang, Jie Zhang
2009 Volume 38 Issue 12 Pages
1140-1141
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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A novel, eco-friendly, and stable homogeneous luminescent system for capillary zone electrophoresis (CE) detection was established, based on the chemiluminescence (CL) flash caused by mixing ferrate(VI) with luminol solution. It was found that the stable ferrate(VI) could be freshly electrogenerated in low-concentration NaOH solution for direct analytical application. To test this CL system, 8-hydroxyquinoline (HQ) was chosen as a model sample by CE detection.
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Xuefeng Zhou, Yunzhu Qian, Yang Bai, Xin Feng, Ning Gu, Xiaohua Lu
2009 Volume 38 Issue 12 Pages
1142-1143
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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Supplementary material
The effect of chemical heterogeneity on the adsorption of Methyl Orange (MO) in aqueous solutions was investigated by atomic force microscopy (AFM). On hydrophilic mica, a small number of disordered islands of Methyl Orange were formed. However, after deposition of self-assembled monolayers (SAMs) of octadecyltrichlorosilane (OTS) on mica, MO molecules adsorbed extensively and selectively on the hydrophobic OTS SAMs. Most importantly, the MO molecules on hydrophobic domains were highly ordered and almost perpendicular to the OTS surface.
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Zhenjun Chang, Ying Fang, Qinghua Zhang, Dajun Chen
2009 Volume 38 Issue 12 Pages
1144-1145
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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Supplementary material
We have developed a facile and efficient methodology to prepare iron phthalocyanine-coated nanofibers by combining electrospinning and Cu(I)-catalyzed 1,3-dipolar Huisgen cycloaddition of azides and alkynes.
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Hiroyuki Matsumoto, Mikihiko Matsuoka, Kiyoshi Yoshino, Tatsuyuki Iwas ...
2009 Volume 38 Issue 12 Pages
1146-1147
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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We have been investigating the mechanism of surface oxidation on thin silver film under ultraviolet lamp processing to achieve high-resolution active oxygen monitoring utilizing a quartz crystal microbalance (QCM). In this study, real-time silver oxidation behavior was measured by the QCM. The oxidation mechanism is discussed here based on the results of surface analyses by X-ray diffraction (XRD) and scanning transmission electron microscopy (STEM).
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Kazuyuki Nishio, Toshiaki Kondo, Hideki Masuda
2009 Volume 38 Issue 12 Pages
1148-1149
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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Supplementary material
The anodization of purple gold (AuAl
2) in oxalic acid at low voltage (5 V) generated uniformly sized Au nanoparticles on the substrate. The surface of the sample showed a characteristic color after the anodization, which originated from the localized surface plasmon (LSP) of Au nanoparticles. The samples with Au nanoparticles could be applied as a substrate for the measurement of surface-enhanced Raman scattering of molecules.
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Hiroshi Chishima, Mitsuo Koshi, Kenichi Tonokura
2009 Volume 38 Issue 12 Pages
1150-1151
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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Supplementary material
Pressure dependence of vinylperoxyl radical formation in the reaction of the vinyl radical with molecular oxygen has been studied using a laser photolysis/cavity ring-down spectroscopy technique. The absorption spectra of vinyl radical and the product in the reaction were measured in the same spectral range from 439 to 465 nm. Varying the third body carrier gas of Ar from 10 to 120 Torr had obvious effect on the production of the vinylperoxyl radical.
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Hidetomo Imase, Ken Tanaka
2009 Volume 38 Issue 12 Pages
1152-1153
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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Supplementary material
A cationic gold(I)/PPh
3 complex catalyzes cycloisomerizations of bicyclic
N-alkenyl alkynylamides leading to tricyclic 2-pyridone derivatives at room temperature in good yields. The bicyclic
N-alkenyl alkynylamides are readily prepared starting from commercially available 2-substituted cycloalkanones.
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Liangbin Xiong, Minglu Ouyang, Lili Yan, Jialin Li, Mingqiang Qiu, Yin ...
2009 Volume 38 Issue 12 Pages
1154-1155
Published: December 05, 2009
Released on J-STAGE: October 31, 2009
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Supplementary material
Ti
3+ in TiO
2/Cu
2O bilayer film is demonstrated to show energy storage ability. UV–vis absorption spectrum and XPS characterization are carried out to confirm that there are Ti
3+ ions formed and that more than 74% Ti
4+ ions are reduced to Ti
3+ ions after visible-light irradiation. More than 10
−2 C cm
−2 electrons are detected in the bilayer film as determined by H
2 evolution. This study provides a new way to harvest and store excess energy from solar light in the daytime.
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Yukiumi Kita, Taro Udagawa, Masanori Tachikawa
2009 Volume 38 Issue 12 Pages
1156-1157
Published: December 05, 2009
Released on J-STAGE: November 07, 2009
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We have theoretically analyzed the nuclear quantum effect on the nuclear magnetic shielding (σ) and molecular magnetic susceptibility (χ) of H
3O
2− and N
2H
7+ systems with a new implementation combined with the multicomponent density functional theory and the gauge-including atomic orbital or continuous set of gauge transformation techniques. Our method easily reproduces the “deshielding” effect of σ on hydrogen atoms and clearly indicates the existence of the H/D isotope effect on χ in H
3O
2− and N
2H
7+ systems.
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Donghong Li, Dong Wang, Junlin Diao, Jianchang Liu
2009 Volume 38 Issue 12 Pages
1158-1159
Published: December 05, 2009
Released on J-STAGE: November 07, 2009
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Supplementary material
A folate–porphyrin conjugate
1 has been synthesized and characterized. The cellular uptake of conjugate
1 by Hela cells was about 35 times higher than that of precursor porphyrin
3 after 24 h of incubation and can be inhibited competitively by free folic acid. Moreover, conjugate
1 exhibited much lower dark cytotoxicity against Hela cells in vitro but significant photocytotoxicity with 86.4% cell growth inhibition ratio after irradiation.
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Takeo Suga, Shunya Takeuchi, Takanori Ozaki, Miki Sakata, Kenichi Oyai ...
2009 Volume 38 Issue 12 Pages
1160-1161
Published: December 05, 2009
Released on J-STAGE: November 07, 2009
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Supplementary material
Two redox-active poly(oxoammonium salt)s were synthesized via chemical oxidation of a TEMPO-substituted polymer, or conventional radical polymerization of the oxoammonium monomer, respectively. The diode-structured thin film device composed of poly(oxoammonium salt) with radical conc. of 6–43% exhibited a resistive switching behavior (ON–OFF ratio >10
3), in contrast to the radical-free poly(oxoammonium salt), which revealed that the coexistence of radical/oxoammonium salts contributed to a significant change in
I–
V characteristics.
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Hyun-Seog Roh, Youshick Jung, Kee Young Koo, Un Ho Jung, Yong-Seog Seo ...
2009 Volume 38 Issue 12 Pages
1162-1163
Published: December 05, 2009
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Ni/γ-Al
2O
3 catalysts (Ni content = 52 wt %) have been designed by a homogeneous precipitation method using urea as a precipitation agent for direct internal reforming in a molten carbonate fuel cell. Concentrations of precursor and urea have been systematically varied to develop highly active and KOH-resistant catalyst. Compared with the commercial catalyst, the developed catalyst exhibits strong stability against KOH as well as very high activity.
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Wihatmoko Waskitoaji, Tsuyoshi Hyakutake, Junji Kato, Masahiro Watanab ...
2009 Volume 38 Issue 12 Pages
1164-1165
Published: December 05, 2009
Released on J-STAGE: November 07, 2009
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Supplementary material
Luminescent oxygen sensory polymer coatings composed of platinum tetrakis(pentafluorophenyl)porpholactone and -porphyrin with poly(trimethylsilylpropyne) were prepared. Two luminescence peaks at 750 and 650 nm from the coating ascribed to the porpholactone and the porphyrin, respectively, were efficiently quenched with oxygen and were separately monitored to allow the simultaneous measurement of oxygen partial pressure distribution upon two planar surfaces.
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Sensuke Ogoshi, Akira Nishimura, Toshifumi Haba, Masato Ohashi
2009 Volume 38 Issue 12 Pages
1166-1167
Published: December 05, 2009
Released on J-STAGE: November 07, 2009
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Supplementary material
In the presence of a catalytic amount of Ni(cod)
2 and PCy
3, the reaction of (
E)-1-phenylbut-2-en-1-one (
1a) with ethylene occurred to give three-component addition products, 1,6-enone
2a and 1,5-diketone
4a. The reaction of an enone with two ethylenes gave
2a. The reaction of two enones with an ethylene gave
4a. On the other hand, 2-methyl-1-phenylprop-2-en-1-one (
1b) reacted with two ethylenes selectively to give a mixture of
2b and
3b. The reaction might proceed via oxidative cyclization of an enone and an ethylene with nickel(0).
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Asako Igashira-Kamiyama, Masayuki Saito, Takumi Konno
2009 Volume 38 Issue 12 Pages
1168-1169
Published: December 05, 2009
Released on J-STAGE: November 07, 2009
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Supplementary material
Treatment of dicyandiamide, 2-aminoethanethiol hydrochloride, and NiCl
2·6H
2O in water gave an S-bridged dinickel(II) complex, [Ni
2(L)
2]Cl
2 ([
1]Cl
2), which contains novel tridentate-N,N,S iminothiolate ligands with a biguanide moiety (L
−). Another S-bridged complex containing L
−, [Co{Co(L)
2}
3]
6+ ([
2]Cl
6), which has the first example of a hexol S-bridged structure, was obtained by the stepwise reaction of [
1]Cl
2 with Na
4edta and CoCl
2·6H
2O in water.
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Eiji Asato, Shoji Miyazato, Haruka Tohma, Satoshi Takara, Makoto Tadok ...
2009 Volume 38 Issue 12 Pages
1170-1171
Published: December 05, 2009
Released on J-STAGE: November 07, 2009
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Supplementary material
The reaction of Zn(ClO
4)
2·6H
2O with TPA and H
4THBQ in methanol gave air-sensitive crystalline powder [Zn
2(μ-H
2THBQ)(TPA)
2](ClO
4)
2 (
1). An equimolar reaction of
1 with 1,4-benzoquinone (BQ) in acetonitrile under Ar atmosphere quantitatively produced 1,4-hydroquinone and [Zn
2(μ-RHOD)(TPA)
2](ClO
4)
2 (
2) as a result of the 2H
+, 2e proton-coupled electron-transfer (PCET) reaction.
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Qihua Zeng, Pei He, Xinguo Zhang, Hongbin Liang, Menglian Gong, Qiang ...
2009 Volume 38 Issue 12 Pages
1172-1173
Published: December 05, 2009
Released on J-STAGE: November 07, 2009
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M
9Gd
2W
4O
24:Eu
3+ (M
2+=Ca
2+ and Sr
2+) phosphors were prepared by solid-state reaction, and the phosphors show intense red emission under 395 and 465 nm excitations, which matched the emission wavelength of a near-UV (NUV) chip and a blue chip, respectively. Bright white LEDs were fabricated, and the performances of the LEDs demonstrate that the tetra-tungstate phosphors are suitable for application to NUV and blue InGaN-based WLEDs.
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Tomoya Miura, Takeharu Toyoshima, Yoshiteru Ito, Masahiro Murakami
2009 Volume 38 Issue 12 Pages
1174-1175
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
The palladium-catalyzed reactions of 2-(alkynyl)aryl isocyanates with thiols and alcohols caused cyclization to give stereodefined 3-alkylideneoxindoles incorporating sulfanyl and alkoxy groups on the alkylidene unit, respectively.
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Yoshihiro Ogaki, Yu Shinozuka, Moriaki Hatakeyama, Takayoshi Hara, Nob ...
2009 Volume 38 Issue 12 Pages
1176-1177
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
Bamboo biomass was hydrolyzed by using sulfonated allophane catalyst and hemicellulose in bamboo was preferentially decomposed to xylose and xylo-oligosaccharides in the range from 130 to 160 °C.
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Hiroe Satoh, Harumi Kaga, Toyoji Kakuchi, Toshifumi Satoh, Kenji Takah ...
2009 Volume 38 Issue 12 Pages
1178-1179
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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It is found that the dehydration of glucose to anhydroglucose, such as 1,6-anhydro-β-
D-glucopyranose and 1,6-anhydro-β-
D-glucofuranose, proceeds very effectively in hydrophobic ionic liquids, for example ionic liquid
N,
N-diethyl-
N-(2-methoxyethyl)-
N-methylammonium bis(trifluoromethanesulfonyl)amide, without any catalysts at high temperature. On the other hand, addition of a small amount of an ionic liquid with chloride anion reduces the yield of the anhydroglucose significantly.
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Akira Tsubouchi, Hiroko Matsuda, Takashiro Kira, Takeshi Takeda
2009 Volume 38 Issue 12 Pages
1180-1181
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
(
Z)-Di-
t-butoxymethylsilyl enol ethers were stereoselectively produced by the copper(I)
t-butoxide-promoted cross-coupling of
o-(dimethylphenylsilyl)phenyl ketones with organic halides. The reaction proceeds via the formation of arylcopper species generated by silyl migration to enolate oxygen, accompanied by substitution of
t-butoxy on silicon.
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Ling-jun Li, Xin-hai Li, Zhi-xing Wang, Ling Wu, Jun-chao Zheng, Hao Y ...
2009 Volume 38 Issue 12 Pages
1182-1183
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
Nickel laterite lixivium is purified by fast phosphate coprecipitation. ICP analysis confirms that Ni, Co, Mn recovery rates are 88.83, 92.66, 93.48%, respectively, and all iron is removed as FePO
4·
xH
2O precursor with trace Al, Mg, Ni, and Mn elements. To evaluate the structure and electrochemical performance of FePO
4·
xH
2O, metal-doped LiFePO
4 is prepared from the as-prepared precursor. It is noted that the metal-doped LiFePO
4 exhibits well-crystallized structure, homogeneous distribution, and excellent electrochemical properties.
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Akifumi Kikuchi, Akimitsu Ishihara, Koichi Matsuzawa, Shigenori Mitsus ...
2009 Volume 38 Issue 12 Pages
1184-1185
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Tantalum-based compounds prepared by reactive sputtering with heating were evaluated as novel non-platinum cathodes for polymer electrolyte fuel cells. Effects of species of target, TaC and TaN, and the oxygen partial pressure on catalytic activity for the oxygen reduction reaction (ORR) were investigated. We found that TaC target was more useful than TaN to prepare specimens with high ORR activity. In addition, the existence of an appropriate amount of O
2 was needed with the TaC target to obtain superior catalytic activity for the ORR. XRD and TOF-SIMS analysis suggested that crystalline structure of TaON (monoclinic) and carbon on the surface might affect the catalytic activity for the ORR.
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Shunsuke Fujie, Kouichi Matsumoto, Seiji Suga, Jun-ichi Yoshida
2009 Volume 38 Issue 12 Pages
1186-1187
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
The reaction of alkenes and alkynes with ArS(ArSSAr)
+BF
4−, which was generated and accumulated by the low-temperature anodic oxidation of ArSSAr in Bu
4NBF
4/CH
2Cl
2, led to the addition of an ArS group and fluoride across the carbon–carbon multiple bond to give thiofluorinated compounds in good yields.
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Shohei Sase, Yohei Aoki, Noriaki Abe, Kei Goto
2009 Volume 38 Issue 12 Pages
1188-1189
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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A primary alkyl steric protection group bearing a cavity-shaped framework, a BpqCH
2 group, was developed. A sulfenyl iodide with the BpqCH
2 group was successfully synthesized and unambiguously characterized by X-ray crystallographic analysis. The sulfenyl iodide showed remarkable stability both in the solid state and in solution, demonstrating that the BpqCH
2 group is promising for kinetic stabilization of primary alkyl substituted reactive species.
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Satoaki Ikeuchi, Yasuhisa Yamamura, Minoru Mitsumi, Koshiro Toriumi, H ...
2009 Volume 38 Issue 12 Pages
1190-1191
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
The title compound newly synthesized shows a quite different physical properties from similar compounds having shorter alkyl chains in alkyl dithiocarboxylato ligands. This finding demonstrates an important role of ligands and their dynamics in designing physical properties of inorganic complexes.
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Nobu Kato, Takanobu Sanji, Masato Tanaka
2009 Volume 38 Issue 12 Pages
1192-1193
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
When wrapped with amylose, oligo(
p-phenylenevinylene) exists in a state that is isolated from the external environment, thereby hampering the π–π interactions and displaying an intense blue emission arising from the chiral conformation of the main chain.
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Shigekazu Ito, Taro Momozaki, Yuta Kishimoto, Jiro Abe, Fumiyasu Iwaho ...
2009 Volume 38 Issue 12 Pages
1194-1195
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
31P NMR data of a 1,4-diphosphafulvene (alkylidene-2,3-dihydro-1
H-1,3-diphosphole) and a 3,4-dihydro-1,3,4-triphosphacyclopenta[
a]indene, bearing two or three chemically inequivalent phosphorus nuclei, were promising to be applicable for solution
31P NMR quantum information processing, and demonstrations including implementation of the Deutsch–Jozsa algorithm with
31P nuclei were examined.
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Hisako Hashimoto, Takeshi Tsubota, Tetsuya Fukuda, Hiromi Tobita
2009 Volume 38 Issue 12 Pages
1196-1197
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
A neutral germylene tungsten complex with W–H and Ge–H bonds was prepared by the reaction of an acetonitrile(methyl)tungsten complex with trihydrogermane at room temperature. X-ray crystal structure analysis and IR study revealed that there is a weak but significant interligand interaction between the germylene and hydrido ligands. The germylene complex reacted with nitriles and ketones to give hydrogermylation products in high yields.
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Nobumitsu Niina, Hiroto Kudo, Tadatomi Nishikubo
2009 Volume 38 Issue 12 Pages
1198-1199
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
We succeeded in the synthesis of new noria-like macrocycles by condensation of 3-alkoxyphenol as A
2 type monomers, and pentanedial as B
4 type monomer. These condensation reactions were performed using several acids as catalysts in ethanol and CHCl
3. It was found that these reactions proceeded by DCC to afford soluble polymers, oligomers, and noria-like ladder macrocycles. As the result, the selective synthesis of the targeted noria-like macrocycles was achieved successfully in high yields.
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Noriyuki Asakura, Ryohei Goto, Toshiaki Kamachi, Ichiro Okura
2009 Volume 38 Issue 12 Pages
1200-1201
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Viologen-linked porphyrins are a typical compound for photoinduced electron-transfer models via the photoexcited singlet state. The singlet-state electron transfer, however, does not occur in water, because solvent cage formation, which is motion of solvent molecules during electron transfer, is slow in the case of water. In order to boost the solvent cage formation of water and achieve the electron transfer via the singlet state in water, viologen-linked hydrophobic porphyrin was prepared.
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Tsutomu Ohzuku, Mitsuyasu Imazaki, Naoya Tsukamoto, Kingo Ariyoshi
2009 Volume 38 Issue 12 Pages
1202-1203
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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A 2.5-V battery consisting of lithium titanium oxide (LTO) and lithium aluminum manganese oxide (LAMO) having spinel-framework structures was examined from 1 to 3 V at 55 °C. After several trials on capacity retention at high temperatures, we have succeeded to show that the rechargeable capacity is retained at greater than 80% even after 3600 cycles at 55 °C by applying cellulose nonwoven cloth as a separator, satisfying requirement for 12-V automobile applications.
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Katsukiyo Miura, Hiroyuki Izumi, Hidenori Kinoshita, Junji Ichikawa, A ...
2009 Volume 38 Issue 12 Pages
1204-1205
Published: December 05, 2009
Released on J-STAGE: November 21, 2009
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Supplementary material
Catalytic use of PtCl
2 and AgX (X=OTf and SbF
6) has been found to effectively promote the intermolecular ene reaction of acetals and the tandem acetalization–ene reaction of aldehydes under solvent-free conditions.
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