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Masaaki Saito, Toshinobu Miyata, Akinori Murakami, Shinichiro Nakamura ...
2004 Volume 33 Issue 7 Pages
786-787
Published: 2004
Released on J-STAGE: May 31, 2004
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An IR spectral difference of the isomers of a photochromic diarylethene derivative was successfully observed by a near field microscope. The near-field detection can be used for non-destructive readout of high-density photochromic recording of the derivative.
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Takuya Masuda, Kohei Uosaki
2004 Volume 33 Issue 7 Pages
788-789
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An organic monolayer with a functional group of electron mediation capability, viologen, was constructed on a hydrogen-terminated Si(111) surface via Si–C bond by photochemical attachment of 4-vinylbenzyl chloride followed by a surface quarternization reaction with 1-methyl-4-(4-pyridyl)pyridinium iodide. Furthermore, Pt particles were deposited on the monolayer by ion exchange reaction with PtCl
42− followed by reduction by hydrogen gas. The mediation of electron transfer by viologen moieties was proved and electrochemical hydrogen evolution reaction rates were enhanced after the Pt deposition.
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Satoru Sasaki, Sumio Aisawa, Hidetoshi Hirahara, Akira Sasaki, Eiichi ...
2004 Volume 33 Issue 7 Pages
790-791
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The synthesis of the
p-sulfonate[4]calixarene (CS4)/M
2+–Al layered double hydroxides (Mg–Al and Zn–Al/CS4/LDHs) has been investigated as well as their adsorption behavior of benzyl alcohol (BA) in aqueous solution. The CS4/LDHs were easily synthesized by the conventional coprecipitation method. The basal spacing of the CS4/LDHs was expanded to 1.33 (Mg–Al) and 1.61 nm (Zn–Al), which indicates that CS4 cavity axis was oriented vertically (Mg–Al) and parallel (Zn–Al) to the LDH basal layer, respectively. In particular, the Zn–Al/CS4/LDH was found to have 2 types of micro pore, the CS4 cavity and the intermolecular space. The adsorption of BA to the CS4/LDH was influenced by the amount and orientation of CS4 ion in the interlayer of the LDHs.
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Hidenobu Shiroishi, Yusuke Ayato, Keiji Kunimatsu, Tatsuhiro Okada
2004 Volume 33 Issue 7 Pages
792-793
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Methanol oxidation on platinum has been suppressed and selective oxygen reduction was achieved in sulfuric acid – methanol aqueous solution by adding organic ligands or their complexes which have pyridyl structures.
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Masahide Tominaga, Takahiro Kusukawa, Shigeru Sakamoto, Kentaro Yamagu ...
2004 Volume 33 Issue 7 Pages
794-795
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Upon complexation with Pd(II) ion, desymmetrized chelating ligand, 6-methyl-2,2′-bipyridine (
1), gives only anti Pd·(
1)
22+ complex. This regioselective complexation is applied to complementary multicomplexation of liner molecular strands: namely, a strand containing two methyl-substituted 2,2′-bipyridine units is selectively complexed on Pd(II) with its counterpart strand in which methyl groups are complementarily substituted.
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Hiroyuki Tonami, Hiroshi Uyama, Ritsuko Nagahata, Shiro Kobayashi
2004 Volume 33 Issue 7 Pages
796-797
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In the horseradish peroxidase (HRP)-catalyzed oxidation of guaiacol (
1), trimeric products, and diastereomers of biphenoquinones have been newly identified. The oxidation product was analyzed by HPLC, liquid chromatography electrospray ionization mass spectrometry (LC-ESIMS), and
1H NMR spectroscopy.
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Eiji Ohmae, Kazumasa Kubota, Kaoru Nakasone, Chiaki Kato, Kunihiko Gek ...
2004 Volume 33 Issue 7 Pages
798-799
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A new dihydrofolate reductase (svDHFR) was purified from a deep-sea bacterium,
Shewanella violacea strain DSS12, isolated from the Ryukyu Trench (5110 m). In contrast with
E. coli DHFR, the enzyme activity of svDHFR increased with increasing hydrostatic pressure up to 100 MPa, suggesting that the enzyme kinetics and structural fluctuation of svDHFR are adapted to a high-pressure environment.
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Junji Shibata, Hisao Yoshida, Atsushi Satsuma, Tadashi Hattori
2004 Volume 33 Issue 7 Pages
800-801
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The co-existence of both CO and H
2 and the use of Na-zeolite supports leads to effective NO reduction below 500 K for the SCR of NO over low loaded (0.5 wt %) Ir catalyst, which was attributed to the formation of metallic iridium species.
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Te-Wen Kuo, Chien-Yueh Tung, Yung-Chan Lin, Shyue-Ming Jang
2004 Volume 33 Issue 7 Pages
802-803
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The nanometer-sized zinc sulfide (ZnS) as a blue-emitting phosphor was prepared in a water-in-supercritical CO
2 microemulsion. The nanoparticles were characterized by XRD, TEM, and PL. XRD analysis shows that the average crystalline size of ZnS nanometer-scale samples is about 2–3 nm. Emission intensity of the ZnS nanophosphors obtained by the process is higher than that micrometer-sized ZnS.
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Baojun Yang, Hanmei Hu, Cun Li, Xiaogang Yang, Qiaowei Li, Yitai Qian
2004 Volume 33 Issue 7 Pages
804-805
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A one-step low-temperature alcohol–water thermal route has been developed to synthesize single-crystal γ-Mn
3O
4 nanorods with diameters of 50–120 nm, and lengths of up to several tens micrometers. high-resolution transmission electron microscopic observations show that the axial direction of the as-prepared nanorods is perpendicular to the normal direction of the (101) lattice planes of the tetragonal γ-Mn
3O
4.
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Yoshiyuki Watabe, Ken Hosoya, Nobuo Tanaka, Takuya Kubo, Takuya Kondo, ...
2004 Volume 33 Issue 7 Pages
806-807
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Uniformly sized molecularly imprinted polymers (MIPs) for bisphenol A (BPA) with immobilized intervals of functional monomers utilizing 4,4′-methylenebisphenol as a pseudo template have been prepared. The MIPs through surface modification for the removal of interference showed significant selectivity for BPA retention and removal performance for interference in actual environmental water samples as the HPLC stationary phase compared to those of ordinary MIPs. These MIPs were employed as pretreatment media of column switching HPLC.
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Kun Qiao, Chiaki Yokoyama
2004 Volume 33 Issue 7 Pages
808-809
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Nitration of simple aromatic compounds with 62% nitric acid is successfully carried out under solvent-free condition in a biphasic mode in the presence of the Brønsted acidic ionic liquids; the only by-product is water and ionic liquids are capable of being reused without any separation.
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Futoshi Fujimura, Makoto Fukuda, Junji Sugiyama, Tomoyuki Morita, Shun ...
2004 Volume 33 Issue 7 Pages
810-811
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A novel cyclic dimer composed of chiral
L-β-homoalanine was synthesized, and the formation of molecular assembly in water was investigated. The cyclic dimer was found to spontaneously form a spherical assembly with diameter of 40–100 nm in water. The cyclic dimer takes a boat conformation with
cis-amide configuration, and forms intermolecular hydrogen bondings in the assembly. The assembling property of the cyclic dimer of β-amino acid is distinct from that of α-amino acid.
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Hideki Masuda, Hiromi Hogi, Kazuyuki Nishio, Futoshi Matsumoto
2004 Volume 33 Issue 7 Pages
812-813
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An ordered array of ferritin, in which the arrangement of ferritin coincided with the arrangement of Au disks, was prepared on Au nanodisk arrays fabricated on a highly ordered anodic porous alumina substrate. Selective adsorption of ferritin onto the Au disk by controlling the modification time and ferritin concentration in the modification solution was confirmed by scanning electron microscopy.
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Shuusuke Suzuki, Yasuchika Yonezawa, Chung-gi Shin
2004 Volume 33 Issue 7 Pages
814-815
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Useful synthesis of the main Fragment A–C–D segment constructing a thiostrepton-type macrocyclic antibiotic, thiocilline I, was first achieved by coupling of the 2,3,6-polythiazolesubstituted pyridine skeleton (Fragment A–C) with Fragment D.
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Atsushi Asano, Miho Shimizu, Takuzo Kurotsu
2004 Volume 33 Issue 7 Pages
816-817
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The relation between
T1H values of PVA/montmorillonite-clay nanocomposites and an iron content in a few different kinds of montmorillonite clays is examined. The
T1H values for PVA in the PVA/montmorillonite-clay nanocomposites decreased drastically with the amount of the montmorillonite clay, and the decrement depends on the iron content in the montmorillonite clay.
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Seung-Taek Myung, Myung-Hoon Lee, Sang-Ho Park, Yang-Kook Sun
2004 Volume 33 Issue 7 Pages
818-819
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In attempt to synthesize layered Li[Ni
0.5Mn
0.5]O
2, a hydrothermal method has been employed. First, the spherical powder precursor, [Ni
0.5Mn
0.5](OH)
2, was prepared via a coprecipitation. Then, the precursor was hydrothermally reacted with an excess amount of LiOH aqueous solution at 170 °C for 4 days. From X-ray diffraction investigation, it was found that the hydrothermally prepared powders showed the layered Li[Ni
0.5Mn
0.5]O
2 having α-NaFeO
2 structure (space group:
). The as-prepared powders delivered the initial discharge of about 104 mAh g
−1. Further calcination of the hydrothermally prepared powders at 800 °C resulted in the well-ordered layered structure, indicating increase in the crystallinity. Subsequently, the resulting discharge capacity was also improved, 142 mAh g
−1 by applying a current density of 20 mA g
−1 (1/8C) and the capacity retention was relatively good during cycling.
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Hajime Kawanami, Yutaka Ikushima, Nagao Kobayashi
2004 Volume 33 Issue 7 Pages
820-821
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Metallophthalocyanines having alkoxy groups have been found to dissolve in dense carbon dioxide in the presence of small amount of cosolvent such as methanol or pyridine. The pressure dependence of the absorption maximum of these phthalocyanines can be used as an indicator for measuring solvent polarity.
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Yujun Zhu, Jing Li, Xiangguang Yang, Yue Wu
2004 Volume 33 Issue 7 Pages
822-823
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The product selectivity can be controlled by adding acetic acid in feed over vanadium phosphate (VPO) in gas phase oxidative dehydrogenation (ODH), in which cyclohexane and cyclohexene are oxidized to cyclohexene and 1,3-cyclohexadiene (1,3-CHD), respectively, at almost 100% selectivity. This approach is also an efficient method to capture the very unstable intermediates in the mechanism study.
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Takashi Ooi, Kumiko Morimoto, Kanae Doda, Keiji Maruoka
2004 Volume 33 Issue 7 Pages
824-825
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Unique relationship between the catalyst structure and regio- and stereoselectivity in the chiral quaternary ammonium bifluoride–catalyzed asymmetric addition of silyl nitronates to α,β-unsaturated aldehydes has been reported.
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Huaming Yang, Xiangchao Zhang, Aidong Tang, Guanzhou Qiu
2004 Volume 33 Issue 7 Pages
826-827
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Cobalt ferrite (CoFe
2O
4) nanoparticles have been prepared by chemical coprecipitation, mechanical milling and subsequent thermal treatment. Sodium chloride was added as a diluent during mechanical milling to avoid agglomeration of the particles. Thermal treatment of the as-milled powder at 600 °C produces well-crystallized CoFe
2O
4 nanoparticles with an average crystal size of 22.5 nm. The mechanism of nanoparticle growth was discussed.
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Jinlou Gu, Jianlin Shi, Hangrong Chen, Liangming Xiong, Weihua Shen, M ...
2004 Volume 33 Issue 7 Pages
828-829
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The high-density CdS nanowire arrays, which are the negative replica of the parent mesoporous thin films with a stoichiometric composition, have been synthesized through a newly developed periodic pulse electrodeposition route.
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Rui Luo, Xia Sun, Lifeng Yan, Wenming Chen
2004 Volume 33 Issue 7 Pages
830-831
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Dendritic NiS
2 nanostructures are successfully synthesized for the first time via the reaction between NiCl
2·6H
2O and CS
2 in poly(MMA-
co-EA) gel using γ irradiation.
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Keiya Mizutani, Hideki Yorimitsu, Koichiro Oshima
2004 Volume 33 Issue 7 Pages
832-833
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Treatment of cinnamyl methyl ether with phenylmagnesium bromide in ether in the presence of CoCl
2[1,5-bis(diphenylphosphino)pentane] affords 1,3-diphenylpropene in good yield. Similar allylic substitution reaction with trimethylsilylmethylmagnesium chloride proceeded smoothly to yield homoallylsilanes. α,β-Unsaturated aldehyde acetal also underwent allylic substitution.
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Guang Qian, Rui Zhao, Dong Ji, Gaomeng Lu, Yanxing Qi, Jishuan Suo
2004 Volume 33 Issue 7 Pages
834-835
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A highly efficient, mild, and simple procedure has been described for the oxidation of aldehydes to corresponding esters in alcohols with S·SnO
2/SBA-1 as catalyst and H
2O
2 as the oxidant, and the catalytic systems can be used in the preparation of a broad range of esters. Oxidation of aldehydes to corresponding esters utilizing H
2O
2 as the oxidant without any metal catalyst is also reported.
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Wei Nie, Lijia An, Bingzheng Jiang, Xiang-Ling Ji
2004 Volume 33 Issue 7 Pages
836-837
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A simple, productive, low-cost route has been developed to synthesize the high-quality 1-D nanorods of CdE (E = Se, Te) with 3–8 nm in diameter and 5–40 nm in length using myristic acid as a complexing agent. Moreover, the reaction is performed under mild conditions and relatively low temperatures. The X-ray powder diffraction patterns confirmed the CdE nanorods with wurtzite structure.
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Chau-Nan Chen, Hong-Ping Lin, Chih-Pin Tsai, Chin-Yuan Tang
2004 Volume 33 Issue 7 Pages
838-839
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The mesoporous silica submicron-spheres (80–200 nm) with a small dispersion in diameter (< 10%) as the building blocks of the artificial mesoporous silica opals have been synthesized using quaternary ammonium surfactant as template in an aqueous solution of suitable polarity at near neutral condition of pH = 7.0–9.0.
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Eui-Chul Kang, Atsuhiko Ogura, Kazunori Kataoka, Yukio Nagasaki
2004 Volume 33 Issue 7 Pages
840-841
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We describe the synthesis of water-soluble PEGylated semiconductor nanocrystals and the characterization of their optical properties and colloidal stability by fluorescence and UV spectrometers. The fluorescence intensity of PEGylated CdSe/ZnS in PBS buffer was observed to be 75% of the initial values of conventional CdSe/ZnS in chloroform. The PEGylated CdSe/ZnS exhibited higher fluorescence intensity than PEGylated CdSe and CdSe/CdS in PBS buffer. The colloidal stability of PEGylated QDs in PBS buffer was estimated by transmittance as a function of time at 37 °C. The PEGylated CdSe/ZnS showed a colloidal stable dispersion in PBS buffer during 24 h.
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Ji K. Zhao, Xiao Chen, Li Y. Jiao, Yong C. Chai, Guo D. Zhang, Jie Liu
2004 Volume 33 Issue 7 Pages
842-843
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A simple method for electrochemical deposition of lamellar platinum nanostructure templated by lyotropic liquid crystal phase is developed. Small-angle X-ray scattering and transmission electron microscopy are used to characterize the template and deposit, respectively. Results indicate that the deposition potential and electrolyte concentration have great effects on the morphology of the product.
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Michinori Takeshita, Takehiko Yamato
2004 Volume 33 Issue 7 Pages
844-845
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Chiral [2.2]metacyclophan-1-ene undergoes an enantiospecific photochromic reaction along with a photoreversible optical rotation change at the wavelength where both photoisomers never absorb. This enables us to carry out a non-destructive read-out of the photomemory made by the photochromic [2.2]metacyclophan-1-ene.
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Mitsuru Yamamoto, Koichiro Oshima, Seijiro Matsubara
2004 Volume 33 Issue 7 Pages
846-847
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Organophosphonium salt was converted into deuterium labelled ones under hydrothermal condition in the presence of molecular sieves. The hydrothermal condition can be obtained by either heating D
2O in an autoclave or irradiating with microwave to D
2O in a sealed vial.
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Kiyoshi Tanaka, Kazuto Taguchi, Satoru Iwata, Takayuki Irie
2004 Volume 33 Issue 7 Pages
848-849
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Benzoyl-substituted hemithioindigo
1 has a novel type of photochromic behavior based on the formation of the photoinduced [2+4] cycloadduct; that is, irradiation of
1 produces the cycloadduct
2 with all
trans-configurations between the adjacent carbonyl moieties; this is completely dissociated back to
1 on heating.
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Lili Zhou, Xiaohong Zhang, Shikang Wu
2004 Volume 33 Issue 7 Pages
850-851
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Hydrazone derivatives
2,
3,
5,
6 with H-bond donor and color-reporting chromophore were synthesized to be used as chemosensors for selective detecting anionic species via naked eye and absorption spectroscopy. The results revealed that these compounds exhibited good selectivity to fluoride anion (F
−). In order to clarify the mechanism of interaction between anionic species and sensors, compound
4 was synthesized for comparative study.
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Xiaohe Liu, Guanzhou Qiu, Junwei Wang, Yadong Li
2004 Volume 33 Issue 7 Pages
852-853
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Hollow submicrometer spheres of nickel selenides have been successfully prepared via sodium dodecyl sulfate (SDS)-assisted hydrothermal reduction route in which aqueous hydrazine was used as a reducing agent and the surfactant SDS was used as a structure-directing agent.
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Takahide Fukuyama, Yoshitaka Uenoyama, Shinya Oguri, Noboru Otsuka, Il ...
2004 Volume 33 Issue 7 Pages
854-855
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The radical carbonylation of 1,5-enynes
1a and
1b using TTMSS as radical mediator gave the predicted carbonylative cyclization products
2a and
2b, respectively, in poor yields. The isolation and characterization of reaction byproducts by X-ray crystallographic analysis suggest that the poor chain propagation can be attributed to the formation of long-lived 3-silyl-1-siloxyallyl radicals, produced by the addition of a (TMS)
3Si radical onto the O–C double bond of the initially formed cyclopentanones.
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Chi Yang, Wing-Tak Wong
2004 Volume 33 Issue 7 Pages
856-857
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In guanidinium hexacarboxylate,
H·G
6·2H
2O (
2, G = C(NH
2)
3, the guanidinium cations and the side pyridinecarboxylate rings are self-assembled
via multiple H-bonds into zigzag-like ribbons which located between the hexahost
H core plane layers. The H-bonds graph set present in the
zigzag ribbons are
R22(8),
R21(6),
R22(10),
R12(6),
R24(12),
R53(10),
R86(24), and
R84(24).
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Nobuyuki Komine, Shin-ichi Tanaka, Susumu Tsutsuminai, Yoshifumi Akaha ...
2004 Volume 33 Issue 7 Pages
858-859
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Heterodinuclear organopalladium–cobalt complex having a 2,2′-bipyridine ligand (bpy)AcPd–Co(CO)
4 catalyzes copolymerization of unsubstituted and both
C- and
N-monosubstituted aziridines, such as aziridine, 2-methylaziridine, and
N-ethylaziridiene, and CO (3–6 MPa) in THF at 100 °C for 6 h.
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Masaru Aoyagi, Hiroyuki Minamikawa, Toshimi Shimizu
2004 Volume 33 Issue 7 Pages
860-861
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The monolayer formation consisting of an amphiphilic terpyridine ligand and a biphenyl template on aqueous solution of a palladium complex was examined with varying the mixing ratios. Templated self-assembly resulted into a stable monolayer of a box-shaped host–guest complex at air–water interface.
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Hiroaki Isago, Yutaka Kagaya, Akiyuki Matsushita
2004 Volume 33 Issue 7 Pages
862-863
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Position of the main optical absorption band (Q-band) in electronic spectra of some
trans-[M(Pc)L
2]
k (Pc = substituted or unsubstituted phthalocyaninate, M = Co(III), L = CN
−,
k = −1; M = Sn(IV), L = Cl
−,
k = 0; M = Sb(V), L = Cl
−,
k = +1) complexes depends only on the refractive index of the solvents, indicating that interaction of the transition dipole moment with induced dipole moment generated in the surrounding solvent molecules is predominant.
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Yuki Yamasaki, Takaharu Hirayama, Koichiro Oshima, Seijiro Matsubara
2004 Volume 33 Issue 7 Pages
864-865
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Optically active secondary alkyl halides and sulfonates were treated with alkaline hydrothermal water at 250 °C in sealed vessel. The hydrolysis mostly proceeded with inversion of stereochemistry.
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Shan-Zhong Jian, Yan-Guang Wang
2004 Volume 33 Issue 7 Pages
866-867
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A general method for the liquid-phase synthesis of
trans β-lactams with high diastereoselectivity is described. The mechanism can be explained by a chair-like transition state involving the imine and the (
Z)-enolate.
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Takahiro Sato, Masaaki Okazaki, Hiromi Tobita
2004 Volume 33 Issue 7 Pages
868-869
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Irradiation of Fe(CO)
5 and HSiMe
2OR (R = alkyl or aryl group) together with hexamethylphosphoric triamide (HMPA) produces (CO)
4Fe=SiMe
2·HMPA and SiMe
2(OR)
2. Even in the absence of HMPA, irradiation of Fe(CO)
5 and HSiMe
2O(2-C
5H
4N) affords (CO)
3(H)Fe{SiMe
2···O(2-C
5H
4N)···SiMe
2}. In these reactions, the alkoxyhydrosilanes act as sources of the silylene ligand.
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Satoshi Hirata, Hirofumi Kurokawa, Ikuko Sagami, Toru Shimizu
2004 Volume 33 Issue 7 Pages
870-871
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Fluorescence bands of a Trp110Ile mutant of the isolated heme domain of a heme-regulated phosphodiesterase (
Ec DOS) from
Escherichia coli and its complex with 8-anilino-1-naphthalenesulfonic acid (ANS) were very weak, compared to the wild-type protein, suggesting that the fluorescence of the remaining Trp53 residue is quenched by interactions with heme, and that the Trp110 residue is exposed to the solvent.
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Hideaki Yoshitake, Emi Koiso, Takashi Tatsumi, Haruyuki Horie, Hiroyuk ...
2004 Volume 33 Issue 7 Pages
872-873
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Polyamine-functionalized mesoporous MCM-41 and SBA-15 were synthesized by the substitution of surface chloroalkyl group by linear polyamines. The structure of the functional group was determined by elemental analysis,
29Si and
13C MAS NMR, and IR spectroscopy to explore the effects of chain length and pore size on aqueous ion adsorption capability.
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Yohei Kobashi, Teruaki Mukaiyama
2004 Volume 33 Issue 7 Pages
874-875
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Mild and highly α-selective glycosylations of several acceptors with glycosyl phosphonium iodide, a glycosyl donor readily generated in situ from glycosyl acetate, proceeded smoothly to afford the corresponding disaccharides in high yields.
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Takanori Matsuda, Atsushi Fujimoto, Mitsuru Ishibashi, Masahiro Muraka ...
2004 Volume 33 Issue 7 Pages
876-877
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Treatment of cyclobutanone having an
o-styryl group at the 2-position with a catalytic amount of rhodium–phosphine complex afforded eight-membered ring ketones via intramolecular insertion of the C=C bond into the C–C single bond of the cyclobutanone.
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Tsutomu Kimura, Toshiaki Murai
2004 Volume 33 Issue 7 Pages
878-879
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An efficient synthesis of
P-chiral phosphinoselenoic chlorides and the first optically active
P-chiral phosphinoselenoic amides was successfully achieved. Stereospecific interconversion with the extrusion of selenium atom from optically active phosphinoselenoic amides and the addition of selenium atom to optically active aminophosphines were also investigated.
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Xian-Luo Hu, Ying-Jie Zhu
2004 Volume 33 Issue 7 Pages
880-881
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Single-crystalline PbCrO
4 nanowires have been successfully synthesized by a simple solution method at room-temperature. Amorphous PbCr
3O
10 nanotubes could be hydrothermally prepared from PbCrO
4 nanowires in the presence of PVP. This simple method needs no any seed, catalyst, or template, and may also be extended to the fabrication of other 1-D chromates.
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J. S. Yadav, B. V. Subba Reddy, M. Srinivas
2004 Volume 33 Issue 7 Pages
882-883
Published: 2004
Released on J-STAGE: June 14, 2004
JOURNAL
RESTRICTED ACCESS
α-Diazoketones underwent insertion smoothly with sodium azide and potassium thiocyanate in the presence of CeCl
3·7H
2O under mild reaction conditions to afford the corresponding α-azidoketones and α-ketothiocyanates in excellent yields.
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