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Vol. 81, No. 6 (June, 2008)
[PDF version]
| The Chemical Society of Japan Award for Young Chemists for 2006 |
Web Release Date:
June 11, 2008
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659-675
Development of Novel Near-Field Microspectroscopy and Imaging of Local Excitations and Wave Functions of Nanomaterials
K. Imura* and H. Okamoto
[Full Text PDF(J-STAGE)] Free Access Article
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We studied local excitations and wave functions of single noble metal nanoparticles by using newly developed methods of near-field microspectroscopy. We demonstrate that plasmon wave functions and optical fields in the neighbor of nanoparticles are visualized by the near-field methods.
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| Web Release Date:
June 11, 2008
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676-688
Self-Oscillating Polymer and Gels as Novel Biomimetic Materials
R. Yoshida
[Full Text PDF(J-STAGE)] Free Access Article
As a novel biomimetic polymer, we have been studying a polymer with an autonomous self-oscillating function by utilizing oscillating chemical reactions. In this paper, our recent studies on the self-oscillating polymer and the design of functional material systems are summarized.
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| Web Release Date:
June 11, 2008
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689-696
Synthesis of Diketones and ω-Hydroxy Ketones from Methyl Ketones and α,ω-Diols by an [IrCl(cod)]2/PPh3/KOH System
K. Maeda, Y. Obora, S. Sakaguchi, and Y. Ishii*
[Full Text PDF(J-STAGE)] [Supporting Information] Free Access Article
ω-Hydroxy ketones and diketones, which are important starting materials for the synthesis of cycloalkanones and heterocyclic compounds, were prepared by one-step reaction of methyl ketones with α,ω-diols under the influence of an iridium complex and a base.
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| Web Release Date:
June 11, 2008
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697-702
Monte Carlo Study of First-Order Phase Transitions of a Bulk Lennard–Jones Fluid System in the Isobaric–Multithermal Ensemble
C. Muguruma* and Y. Okamoto
[Full Text PDF(J-STAGE)]
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A Monte Carlo simulation in the isobaric–multithermal ensemble has been carried out for a bulk Lennard–Jones fluid system. The contour representation of the two-dimensional probability distribution of the potential energy E* and the volume V* at Tc*=0.726 under P*=2.42× 10−3 indeed shows two phases.
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| Web Release Date:
June 11, 2008
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| 703-710
Liquid Junction Potential between Electrolyte Solutions in Different Solvents Studied by Use of Mixed Solvent/Pure Solvent Junctions
K. Izutsu
[Full Text PDF(J-STAGE)]
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At mixed solvent/pure solvent junctions, the component of the liquid junction potential due to the interaction between different solvents (component (c)) primarily varies linearly with the volume fraction of the mixed solvent. However, there are cases of nonlinear variations.
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| Web Release Date:
June 11, 2008
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| 711-715
Spectrophotometric Studies of the Thermodynamics of Molecular Interaction between Some Free Base meso-Tetraarylporphyrins and SbF3
H. Dehghani,* M. Bordbar, S. Rezakhani, and M. R. Mansournia
[Full Text PDF(J-STAGE)]
SbF3 and para-, meta-, and ortho-substituted meso-tetraarylporphyrins (H2t(Xp)p; X: H, OCH3, CH3, and Cl) produced 1:1 molecular complexes, [(SbF3)H2t(Xp)p], in chloroform solution. Kf for the molecular complexation is increased with the enhancement of electron donation and the steric hindrance diminution of the aryl rings in the porphyrins.
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| Web Release Date:
June 11, 2008
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| 716-725
Mono- and Trinuclear CuII Complexes with Tripodal Ligands
Y. Sunatsuki, T. Kobayashi, K. Harada, T. Yamaguchi, M. Nonoyama, and M. Kojima*
[Full Text PDF(J-STAGE)]
Mononuclear [Cu(HL)] and trinuclear [Cu3(L)2] complexes were synthesized, where H3L is a tripodal ligand obtained by condensation of 1,1,1-tris(aminomethyl)ethane and salicylaldehyde (1:3). In [Cu3(L)2], an imine nitrogen atom and a phenolate oxygen atom of one arm of each terminal unit coordinate to the central CuII ion to form a linear trinuclear complex.
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| Web Release Date:
June 11, 2008
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| 726-732
In Situ Electrochemical Quartz Crystal Microbalance Measurement of Au Deposition and Dissolution in Room-Temperature Ionic Liquid Containing Chloride Ion
T. Oyama, T. Okajima, T. Ohsaka,* S. Yamaguchi, and N. Oyama*
[Full Text PDF(J-STAGE)]
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(A) Differential frequency and (B) cyclic voltammetric current responses, which were simultaneously obtained with Au film-coated quartz crystal electrode in EMIBF4 containing 8.40 mM EMICl at 10 mV s−1, demonstrate that the observed CV response is directly correlated with the mass change of the Au electrode surface.
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| Web Release Date:
June 11, 2008
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| 733-739
Modifications of Hydrophobic Value and Hydrophobic Moment Value of Cationic Model Peptides for Conversion of Peptide–Membrane Interactions
J. Taira, S. Furukawa, T. Hatakeyama, H. Aoyagi, and H. Kodama*
[Full Text PDF(J-STAGE)]
The hydrophobic and amphiphilic characteristics of cationic helical peptide 46 reported previously were modified to elucidate biological activities including antimicrobial activities, hemolytic activities, and ion channel activities. The modification caused drastic change of the biological activities.
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| Web Release Date:
June 11, 2008
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| 740-753
“Syn Effect” in Nucleophilic Addition of Amines to 1,3-Dienyl Sulfone and Ethyl (E)-2,4-Pentadienoate
M. Yamazaki, S. K. Guha, Y. Ukaji,* and K. Inomata*
[Full Text PDF(J-STAGE)]
Nucleophilic addition of amines to (E)-1-tosyl-1,3-butadiene and ethyl (E)-2,4-pentadienoate in low concentration of amines at high temperature, afforded the corresponding sterically unfavorable (Z)-allylic amines preferentially. As the origin of the predominant formation of Z isomers was proposed a “syn effect.”
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| Web Release Date:
June 11, 2008
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| 754-756
Study on Facile Synthesis, Crystal Structure, and Solid-State Fluorescence of Dicyclohexane-Annelated Anthracene
C. Kitamura,* C. Matsumoto, N. Kawatsuki, A. Yoneda, K. Asada, T. Kobayashi, and H. Naito
[Full Text PDF(J-STAGE)] [Supporting Information]
Dicyclohexane-annelated anthracene was synthesized using a new facile method. The first step involved a Diels–Alder reaction between in situ-generated 2,3-dehydronaphthalene and dicyclohexane-fused furan. X-ray analysis revealed that the molecule adopted an antiparallel face-to-face slipped π-overlap in the crystal structure, which induced an excimer-like emission in the solid state.
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| Web Release Date:
June 11, 2008
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| 757-760
Synthesis of Au Nanoparticles in the Interlayer Space of a Layered Titanate Intercalated with 2-Aminoethanethiol
Y. Ide, Y. Nakasato, and M. Ogawa*
[Full Text PDF(J-STAGE)]
Platy Au nanoparticles formed in the interlayer space of a 2-aminoethanethiol-intercalated layered titanate.
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| Web Release Date:
June 11, 2008
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| 761-766
Controlled Synthesis of Monodispersed Cerium Oxide Nanoparticle Sols Applicable to Preparing Ordered Self-Assemblies
N. Izu,* I. Matsubara, T. Itoh, W. Shin, and M. Nishibori
[Full Text PDF(J-STAGE)]
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Sols of spherical cerium oxide nanoparticles with size of 50–120 nm are prepared by a reflux method adding polymer. The nanoparticle size can be controlled by adjustment of the molecular weight of the polymer. Colloidal crystals are also obtained.
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| Web Release Date:
June 11, 2008
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| 767-772
Composition-Dependent Ion-Exchange Reactivity of Potassium Lithium Titanates
Y. Fuse, Y. Ide, and M. Ogawa*
[Full Text PDF(J-STAGE)]
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The reactivity of potassium lithium titanates toward an alkylammonium ion varied depending on the composition and was successfully tuned by controlling the composition.
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| Web Release Date:
June 11, 2008
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| 773-777
Holographic PDLC Containing Fluorine Segments
E. H. Kim, J. Y. Woo, Y. H. Cho, and B. K. Kim*
[Full Text PDF(J-STAGE)]
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Fluorine segments added to conventional HPDLC induced low driving voltage (<4V μm−1) and fast rise time (<8 ms) caused by low anchoring strength between polymer and LC, in addition to high diffraction efficiency with maximum of about 80% at 5% fluorine monomer.
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| Web Release Date:
June 11, 2008
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| 778-783
Volume Effect of Alkyl Chains on Organization of Ionic Self-Assemblies toward Hexagonal Columnar Mesophases
T. Noguchi, K. Kishikawa, and S. Kohmoto*
[Full Text PDF(J-STAGE)] [Supporting Information]
Upon ionic complexation of triamine and mono-acids, hexagonal columnar mesophases were generated. The most stable columnar mesophase of the ionic complexes is attained with appropriate amine–acid ratios specific to the alkyl substituents of the acids.
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