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Vol. 82, No. 1 (January, 2009)
[PDF version]
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The Chemical Society of Japan Award for Creative Work for 2007
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Web Release Date: January 14, 2009
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1-10
Designable DNA Functions toward New Nanobiotechnology
N. Sugimoto
[Full Text PDF(J-STAGE)]
Free Access Article
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The quantitative data of DNA interaction energy can be applied to molecular design of functional DNAs which allow us to develop novel nanobiodevices and nanobiomaterial which are promising for in vitro and in vivo applications.
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The Chemical Society of Japan Award for Young Chemists for 2007
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Web Release Date: January 14, 2009
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11-28
Design of Porphyrin Nanoclusters toward Discovery of Novel Properties and Functions
A. Tsuda
[Full Text PDF(J-STAGE)]
Free Access Article
Our designed functional metalloporphyrin nanoclusters, connected via covalent or noncovalent linkages, showed interesting properties and functions, originating from characteristic π-electronic features and molecular dynamics. We have successfully synthesized (1) fused oligoporphyrins, (2) self-assembled porphyrins, and (3) inorganic–organic nanocomposites.
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Web Release Date: January 14, 2009
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29-49
Silylboranes as New Tools in Organic Synthesis
T. Ohmura and M. Suginome*
[Full Text PDF(J-STAGE)]
Free Access Article
Silylboranes react with a variety of unsaturated organic compounds in the presence of transition-metal catalysts, leading to regio-, stereo-, and enantioselective silaborations, silaborative C–C coupling reactions, silaborative C–C cleavage reactions, generation of a silylene equivalent, and intramolecular silaboration.
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Web Release Date: January 14, 2009
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50-57
Elongated Lifetime of Unstable Colored Species by Intermolecular Hydrogen Bond Formation in Photochromic Crystals
K. Johmoto, A. Sekine,* H. Uekusa, and Y. Ohashi
[Full Text PDF(J-STAGE)]
Free Access Article
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Three crystal forms of N-3,5-di-tert-butylsalicylidene-3-carboxyaniline showed different photochromic character. X-ray analysis revealed the unstable colored species is the trans-keto form. The lifetime of the trans-keto form is strongly influenced by the intermolecular hydrogen bond formation of the trans-keto form.
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Web Release Date: January 14, 2009
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58-64
Intermolecular Hydrogen Bonds between a Radical and a Diamagnetic Matrix: CW-ESR Investigations of 2,6-Di-tert-butyl-4-hydroxymethylphenol
T. Yamaji,* I. SM Saiful, M. Baba, S. Yamauchi, and J. Yamauchi
[Full Text PDF(J-STAGE)]
We propose a novel formation-model of a hydrogen bond between radicals and a phenol. The W-band and multi-frequency ESR studies revealed that the radical sample generated from PbO2 oxidation of 2,6-di-tert-butyl-4-hydroxymethylphenol has an anomalously large 1H-hyperfine interaction.
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Web Release Date: January 14, 2009
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65-69
Thermodynamics of the Bis(η6-t-butylphenyl)chromium Fulleride [Cr{η6-(t-BuPh)}2]●+C60●−
V. A. Ruchenin, A. V. Markin,* N. N. Smirnova, G. V. Markin, Y. A. Shevelev, V. K. Cherkasov, V. A. Kuropatov, S. Y. Ketkov, M. A. Lopatin, and G. A. Domrachev
[Full Text PDF(J-STAGE)]
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The heat capacity of the bis(t-butylphenyl)chromium fulleride from 6 to 360 K was measured for the first time by adiabatic calorimetry. The temperature dependence of EPR signal parameters of this in the range from 118 to 298 K was investigated.
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Web Release Date: January 14, 2009
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70-75
Experimental and Computational Studies on the Dipole Moments of Annulated-Tropones and 1,4-Polyacenequinones
M. Kudoh, T. Satoh, H. Ikeda, T. Nakazawa,* T. Miyashi, S. Katagiri, and S. Sudoh*
[Full Text PDF(J-STAGE)]
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From the theoretical calculations and experimental results, we examined the annulation effects of benzene rings on the ground-state dipole moments of two series, tropone, benzotropone, naphthotropone, anthratropone, tetracenotropone, pentacenotropone, and 1,4-benzoquinone, 1,4-naphthoquinone, 1,4-anthraquinone, 1,4-tetracenequinone, 1,4-pentacenequinone, 1,4-hexacenequinone, 5,12-tetracenequinone. We found that the dipole moments of these series converged to a limit in both series.
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Web Release Date: January 14, 2009
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76-80
Kinetic Study on the Interactions of Cyclodextrins with Organic Phosphates and Thiophosphates
T. Nagata, K. Yamamoto, K. Yoshikiyo, Y. Matsui, and T. Yamamoto*
[Full Text PDF(J-STAGE)]
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Cyclodextrins consecutively form 1:1 and 2:1 (host:guest) complexes with a few organic phosphates in alkaline solutions. Phenol release from the phosphates was accelerated in 1:1 complexes. In 2:1 complexes, the reactions of phosphates were strongly retarded.
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Web Release Date: January 14, 2009
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81-85
Benzothiazole-2-thiolato-Bridged Heterometallic Complexes and Their I2-Doped Products: Preparation, Characterization, and Conducting Properties
N. Singh,* A. Prasad, and R. K. Sinha
[Full Text PDF(J-STAGE)]
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Heterometallic dinuclear and polynuclear complexes [MM′(bzta)4] [M = Co2+, Pd2+, or 2Cu+; M′ = Ni2+; M = Fe3+ and Co3+; M′ = Cu+; bzta− = benzothiazole-2-thiolate (C6H4NSCS−); and their I2-doped products have been prepared and characterized by using spectroscopic, magnetic, and solid-state electrical conductivity techniques. The I2-doped products exhibited semiconductivity in the 300–420 K temperature range.
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Web Release Date: January 14, 2009
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86-92
Hydrophobic Ionic Liquids Composed of Perfluoroalkyltrifluoroborates for Ionic Liquid–Water Two-Phase Systems
N. Nishi, A. Suzuki, and T. Kakiuchi*
[Full Text PDF(J-STAGE)]
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Hydrophobic ionic liquids (ILs) of perfluoroalkyltrifluoroborate have properties suitable to IL–water two-phase systems. The hydrophobicity of perfluoroalkyltrifluoroborate ions is well correlated with the solubility of the ILs in water and also with the polarizability of the IL|water interface.
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Web Release Date: January 14, 2009
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93-95
Photoinduced Hydrogen Production with a Platinum Nanoparticle and Light-Harvesting Chlorophyll a/b–Protein Complex of Photosystem II (LHCII) from Spinach System
S. Ishigure, A. Okuda, K. Fujii, Y. Maki, M. Nango,* and Y. Amao*
[Full Text PDF(J-STAGE)]
Photoinduced hydrogen production via the photoreduction of methyl viologen (MV2+) using the sensitization of light-harvesting chlorophyll a/b–protein complex of photosystem II (LHCII) from spinach in the presence of platinum nanoparticles and NADH was developed and the amount of hydrogen gas production was 0.40 µmol after 180 min irradiation with red-region (>600 nm) light.
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Web Release Date: January 14, 2009
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96-98
Synthesis and Crystal Structures of Fluorinated β-Diketonate Metal (Al3+, Co2+, Ni2+, and Cu2+) Complexes
A. Hori,* A. Shinohe, S. Takatani, and T. K. Miyamoto
[Full Text PDF(J-STAGE)]
Dinuclear complexes (Co2+ and Ni2+) and a mononuclear complex (Cu2+) with fully fluorinated bis(pentafluorobenzoyl)methanide were obtained from its Al3+ complex by metal-exchange reaction and the influence of the fluorinated ligand is discussed based on the X-ray crystal structures.
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Web Release Date: January 14, 2009
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99-104
Direct In Vitro Selection of Hemin-Binding DNA Aptamer with Peroxidase Activity
M. Liu, T. Kagahara, H. Abe, and Y. Ito*
[Full Text PDF(J-STAGE)]
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A novel hemin-binding DNA aptamer was obtained by in vitro selection. The selected DNA aptamers not only bound to the hemin, but also had peroxidase activity when complexed with hemin.
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Web Release Date: January 14, 2009
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105-109
Regio- and Stereoselective Subterminal Hydroxylations of n-Decane by Fungi in a Liquid–Liquid Interface Bioreactor (L–L IBR)
S. Oda,* K. Isshiki, and S. Ohashi
[Full Text PDF(J-STAGE)]
This article may be the first report to describe the excellent regio- and stereoselective subterminal biohydroxylation of n-alkane. Especially, the regio- and stereoselectivities of hydroxylation of n-decane to (−)-4-decanol with Monilliela sp. reached to 99% and almost 100% ee, respectively.
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Web Release Date: January 14, 2009
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110-117
Doubly Thiazole Orange-Labeled DNA for Live Cell RNA Imaging
T. Kubota, S. Ikeda, and A. Okamoto*
[Full Text PDF(J-STAGE)] Open Access Article
A hybridization-sensitive, quencher-free fluorescent probe for RNA detection has been designed using the concept of fluorescence quenching caused by the excitonic interaction of thiazole orange dyes. This probe facilitated spatiotemporal monitoring of the behavior of intracellular RNA.
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Web Release Date: January 14, 2009
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118-120
Photoinduced Proton Transfer in 2-(2′-Hydroxynaphthalenyl)benzoxazole: Observation of Fluorescence with a Small Stokes Shift Induced by Excited-State Intramolecular Proton Transfer
T. Kanda, A. Momotake, Y. Shinohara, T. Sato, Y. Nishimura, and T. Arai*
[Full Text PDF(J-STAGE)]
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2-(2′-Hydroxynaphthalenyl)benzoxazole (1) exhibited small Stokes shifted emission from the excited tautomer (K*) produced by ESIPT.
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Web Release Date: January 14, 2009
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121-125
Preparation of Propanethiol-Modified Nanoporous Silica Spherical Particles
M. Ogawa,* K. Kato, and N. Shimura
[Full Text PDF(J-STAGE)]
Spherical particles of nanoporous silica containing mercaptopropylsilyl groups on the pore surface formed an artificial opal structure by simply casting the suspension (water dimethylformamide mixture) on a mercaptopropylsilylated Si wafer.
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