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Vol. 80, No. 3 (March, 2007)
[PDF version]
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March 13, 2007
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433-440
Development of Fabrication of Giant Nanomembranes
H. Watanabe, R. Vendamme, and T. Kunitake*
[Full Text PDF(J-STAGE)] Open Access Article
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Giant membranes that are characterized with nanometer thickness and macroscopic size are reviewed for the first time. They are fabricated from only metal oxides, from hybrids of metal oxides and cross-linked acrylate, and from totally organic thermosetting resins.
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Web Release Date:
March 13, 2007
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441-448
Methods of Analysis for Imaging and Detecting Ions and Molecules
Y. Umezawa
[Full Text PDF(J-STAGE)] Free Access Article
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We have developed methods for imaging and detecting ions and molecules. We have tried to implement “seeing what was unseen” in single live cells and interfacial molecular recognition chemistry.
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March 13, 2007
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449-455
Preparation and Characterization of Carbon Microcoils (CMCs)
S. Motojima* and X. Chen
[Full Text PDF(J-STAGE)] Free Access Article
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Carbon microcoils (CMCs) with 3D-helical/spiral structures were obtained by the metal-activated pyrolysis of acetylene. The preparation conditions, morphologies, growth mechanism, microstructure, and some properties of the CMCs are examined, and their potential applications are discussed.
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March 13, 2007
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456-463
High Resolution Spectroscopy and Zeeman Effect of the S1 ← S0 Transition of Benzene and Naphthalene
H. Katô,* M. Baba, and S. Kasahara
[Full Text PDF(J-STAGE)] Free Access Article
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Coupling to a triplet state was shown not to be responsible for nonradiative relaxation. Accordingly, intersystem crossing is not the dominant nonradiative process at low-lying vibrational states, and the main nonradiative process is presumed to be internal conversion.
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March 13, 2007
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464-475
Guest-Induced Supramolecular Isomerism and Chirality of Brucine Inclusion Crystals with Aliphatic Alcohols: A Hierarchical Interpretation
T. Watabe, K. Kobayashi, I. Hisaki,* N. Tohnai, and M. Miyata*
[Full Text PDF(J-STAGE)] [Supporting Information] Free Access Article
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Guest-induced supramolecular isomers of brucine inclusion crystals with aliphatic alcohols consist of the common 21 helical tape-like assemblies. Supramolecular isomerization occurred mainly depending on the size of the guest molecules.
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March 13, 2007
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476-483
π-Radical Cationic Salts of Tetrathiafulvalene Derivatives with Pyromellitate
K. Shiono, T. Naito, and T. Inabe*
[Full Text PDF(J-STAGE)]
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Pyromellitate has been utilized for the construction of the π-radical cationic salts of the TTF derivatives. In most of the salt crystals pyromellitate has been found to form two-dimensional anionic networks.
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March 13, 2007
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| 484-490
Molecular Recognition in an Organic Host–Guest Complex: CH···O and CH···π Interactions Completely Control the Crystal Packing and the Host–Guest Complexation
K. V. Radhakrishnan,* S. Anas, E. Suresh, N. Koga, and C. H. Suresh*
[Full Text PDF(J-STAGE)]
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The synthesis, crystal structure analysis, and theoretical modeling of an organic host–guest complex consisting of azapolycyclic system and ethylacetate revealing rich CH···O and CH···π interactions are presented.
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March 13, 2007
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| 491-494
In Situ Observation of Laser-Induced Convection of Water in High Magnetic Fields Using a Photochromic Reaction
Y. Tanimoto,* K. Sueda, and M. Irie
[Full Text PDF(J-STAGE)]
In situ observation revealed that laser-induced convection of water was remarkably affected by high vertical magnetic fields.
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March 13, 2007
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| 495-497
Spin-Trapping Properties of 5-(Diphenylphosphinoyl)-5-methyl-4,5-dihydro-3H-pyrrole N-Oxide (DPPMDPO)
M. Nishizawa,* K. Shioji, Y. Kurauchi, K. Okuma, and M. Kohno
[Full Text PDF(J-STAGE)]
Spin-trapping properties of DPPMDPO showed that DPPMDPO was a better spin-trapping reagent than DEPMPO for superoxide detection.
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March 13, 2007
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| 498-502
Chemical Speciation of Arsenic Species in Human Blood Serum by Liquid Chromatography Using a Phosphatidylcholine-Coated ODS Column with Detection by ICP-MS
T. Hasegawa, J. Ishise, Y. Fukumoto, H. Matsuura, Y. Zhu, T. Umemura, H. Haraguchi,* K. Yamamoto, and T. Naoe
[Full Text PDF(J-STAGE)]
An octadecylsilyl silica (ODS) column coated with phosphatidylcholine (PC) was used for speciation analysis of inorganic and organic arsenic species in human blood serum. A citric acid buffer solution (pH 4.0) containing TMAH and SDS as the ion-pair reagent as well as CHAPS as a protein-solubilizing agent was used as the mobile phase.
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March 13, 2007
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| 503-506
Speciation of Human Serum Proteins Based on Trace Metal Mapping Analysis by CIM Monolithic Disk Column HPLC/ICP-MS in Complement with Off-Line MALDI-TOF-MS Analysis
T. Hasegawa, Y. Wakita, Y. Zhu, H. Matsuura, H. Haraguchi, and T. Umemura*
[Full Text PDF(J-STAGE)]
A multiply hyphenated system of HPLC/UV/ICP-MS/MALDI-TOF-MS was constructed for metallomics research, and its applicability to the identification of metalloproteins was examined through the analysis of human serum proteins.
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March 13, 2007
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| 507-517
Characteristics of Mononuclear Ruthenium–Oxo Complexes Adjusted by Axial Ligand for the Catalysis of Oxygen-Transfer Reactions
T. Okumura, Y. Morishima, H. Shiozaki, T. Yagyu, Y. Funahashi, T. Ozawa, K. Jitsukawa,* and H. Masuda
[Full Text PDF(J-STAGE)]
Ruthenium(II) complexes with square-planar ligand showed catalytic activity for the oxygen-transfer reactions in the presence of oxidant through high valent RuV=O or RuVI=O species. The catalytic activities were adjusted by the trans-influence of axial ligand L.
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March 13, 2007
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| 518-522
Synthesis and Spectroscopic Characterization of New Molecular Complexes of Bismuth(III) Chloride with Free Base meso-Tetraarylporphyrins
H. Dehghani* and A. R. Ansari Sardrood
[Full Text PDF(J-STAGE)]
1:1 mixing of meso-tetraarylporphyrin (H2t(X)pp) and BiCl3 leads to the formation of [(BiCl3{H2t(X)pp})2], in which two nitrogen atoms of pyrrolenine in the porphyrin act as electron donors to a bismuth atom, and there is a (μ-Cl)2 bridge between two bismuth.
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March 13, 2007
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| 523-529
Synthesis and Magnetic Property of Copper(II)–Lanthanide(III) Complexes [{CuIILLnIII(o-van)(CH3COO)(MeOH)}2]·2H2O (LnIII = GdIII, TbIII, and DyIII; H3L = 1-(2-Hydroxybenzamido)-2-(2-hydroxy-3-methoxybenzylideneamino)ethane; o-van = 3-Methoxysalicylaldehydato)
T. Hamamatsu, K. Yabe, M. Towatari, N. Matsumoto,* N. Re, A. Pochaba, and J. Mrozinski
[Full Text PDF(J-STAGE)]
Three copper(II)–lanthanide(III) complexes with LnIII=GdIII, TbIII, and DyIII were synthesized. These compounds consist of a cyclic tetranuclear CuII2LnIII2 structure, and the magnetic interaction between CuII and each of GdIII, TbIII, and DyIII ions is ferromagnetic. The ac magnetic susceptibilities of the complexes with LnIII=TbIII and DyIII showed a frequency dependence characteristic of SMMs.
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March 13, 2007
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| 530-532
Structure–Activity Relationship of Insulinomimetic Activity of Zinc(II) Complexes with Pyridine-2-sulfonic Acid Derivatives
Y. Yoshikawa, M. Morishita, M. Nishide, E. U. Yoshikawa, I. Kinoshita, K. Okada, N. M. Kajiwara, H. Sakurai, and Y. Kojima*
[Full Text PDF(J-STAGE)]
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Bis(3-methylpyridine-2-sulfonato)zinc(II) was the best insulinomimetic complex among the complexes with pyridine-2-sulfonic acid ligands.
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March 13, 2007
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| 533-535
Synthesis and Luminescence of Four-Coordinate Mononuclear Gold(I) Complex: [Au(biphep)2]PF6
K. Saito, T. Tsukuda, K. Matsumoto, and T. Tsubomura*
[Full Text PDF(J-STAGE)] [Supporting Information]
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A tetrahedral four-coordinate bis-diphosphine gold(I) complex, [Au(biphep)2]PF6, was prepared, and the structure was determined by X-ray structure analysis. The complex in CH2Cl2 showed photo luminescence at room temperature.
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March 13, 2007
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| 536-542
Characterization of Magnesium Porphyrins and Aggregation of Porphyrins in Organic Solvent
X. Zhang, K. Sasaki, and Y. Kuroda*
[Full Text PDF(J-STAGE)] [Supporting Information]
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The lipophilic Mg porphyrin MgTPPSC8 formed J-type oligomers in pure CH2Cl2 and H-aggregates in CH2Cl2–CH3OH binary solvent, which is highly sensitive to the solvent composition.
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March 13, 2007
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| 543-552
Chemical Conversion of Natural Polymyxin B and Colistin to Their N-Terminal Derivatives
K. Okimura, K. Ohki, Y. Sato, K. Ohnishi, Y. Uchida, and N. Sakura*
[Full Text PDF(J-STAGE)]
Tetrakis(Nγ-trifluoroacetyl)–polymyxin B (2–10) was prepared by trifluoroacetylation of natural polymyxin B, followed by treatment of aqueous methanesulfonic acid, and used as a starting material to synthesize the N-terminal derivatives of polymyxin B (2–10).
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March 13, 2007
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| 553-560
Ionic Liquid [bmim]PF6-Mediated Synthesis of 1,2-Orthoesters of Carbohydrates and the Glycosidation Reactions of 4-Pentenyl Orthoesters
S. Anas, V. S. Sajisha, R. Rajan, R. T. Kumaran, and K. V. Radhakrishnan*
[Full Text PDF(J-STAGE)]
A facile synthesis of 1,2-orthoesters of carbohydrates and the glycosidation reactions of 4-pentenyl orthoesters (NPOEs) with different alcohols in the ionic liquid [bmim]PF6 are described.
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March 13, 2007
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| 561-566
The Effect of meta-Substitution on the Photochemical Properties of Benzoxazole Derivatives
A. Ohshima, M. Ikegami, Y. Shinohara, A. Momotake, and T. Arai*
[Full Text PDF(J-STAGE)]
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The excited-state properties of 4-MHBO were similar to those for the parent compound HBO, whereas different properties were observed for 3-MHBO.
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March 13, 2007
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| 567-577
Synthesis of Isochalcogenazole Rings by Treating β-(N,N-Dimethylcarbamoylchalcogenenyl)alkenyl Ketones with Hydroxylamine-O-sulfonic Acid
K. Shimada,* A. Moro-oka, A. Maruyama, H. Fujisawa, T. Saito, R. Kawamura, H. Kogawa, M. Sakuraba, Y. Takata, S. Aoyagi, Y. Takikawa, and C. Kabuto
[Full Text PDF(J-STAGE)]
Treatment of β-(N,N-dimethylcarbamoylchalcogenenyl)alkenyl ketones A with hydroxylamine-O-sulfonic acid afforded isochalcogenazole rings C via an intramolecular nucleophilic attack of in situ generated alkenechalcogenols B to the nitrogen atom of oxime sulfonates.
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March 13, 2007
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| 578-582
Efficient Synthesis of Propargylic Ethers under the DBU Conditions and Its Application to Natural Products Synthesis
T. Yokoyama, N. Kutsumura, T. Ohgiya, and S. Nishiyama*
[Full Text PDF(J-STAGE)] [Supporting Information]
The DBU-mediated elimination reaction of the dibromides possessing O-substituents at neighboring position successfully provided the corresponding alkynes. Application of this methodology to the synthesis of (−)-muricatacin and (R,R)-sapinofuranone B was successfully carried out.
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March 13, 2007
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| 583-585
Stable Diaxial Chair Cyclohexanes due to the Adjacent and Bulky trans-Siloxy Groups
H. Yamada,* K. Okajima, H. Imagawa, T. Mukae, Y. Kawamura, and M. Nishizawa
[Full Text PDF(J-STAGE)]
The rings of the (±)-trans-1,2-bis(tert-butyldiphenylsiloxy)-, (triisopropylsiloxy)-, and (tert-butyldimethylsiloxy)cyclohexanes prefer a diaxial chair conformation in the crystal state. The ring of the tert-butyldimethylsiloxy derivative switched its chair conformation between the diaxial and a diequatorial conformations in the crystal and in solution, respectively.
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March 13, 2007
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| 586-588
Photoisomerization and Fluorescence Properties of para-Substituted Benzyl Ether-Type Stilbene Dendrimers
S. Watanabe, M. Ikegami, R. Nagahata, and T. Arai*
[Full Text PDF(J-STAGE)]
The rate constant of trans-to-cis photoizomerization of stilbene derivatives was not affected by the introduction of bulky substituents with large molecular weight.
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March 13, 2007
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| 589-593
Dehydroabietic Acid Esters as Chiral Dopants for Nematic Liquid Crystals
H. Shitara, M. Aruga, E. Odagiri, K. Taniguchi, M. Yasutake, and T. Hirose*
[Full Text PDF(J-STAGE)]
Optically active dehydroabietic acid derivatives were shown to be good chiral dopants for a nematic liquid-crystal phase.
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