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Vol. 81, No. 4 (April, 2008)
[PDF version]
| The Chemical Society of Japan Award for Creative Work for 2006 |
Web Release Date:
April 10, 2008
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411-448
Three-Dimensional Micro- and Nano-Structuring of Materials by Tightly Focused Laser Radiation
S. Juodkazis, V. Mizeikis, S. Matsuo, K. Ueno, and H. Misawa*
[Full Text PDF(J-STAGE)] Open Access Article
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The SEM image of a photo-polymerized 3D structure in SU-8 resist. The 3D structuring of materials will open the possibility to control optical properties, will create new photo-chemical reaction pathways and new materials based on the engineered nano-/micro-structures.
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| The Chemical Society of Japan Award for Technical Development for 2006 |
| Web Release Date:
April 10, 2008
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449-459
Development of a New Production Process for N-Vinyl-2-pyrrolidone
Y. Shimasaki,* H. Yano, H. Sugiura, and H. Kambe
[Full Text PDF(J-STAGE)] Free Access Article
The first continuous production process for N-vinyl-2-pyrrolidone (NVP) was developed. The starting materials are γ-butyrolactone (GBL) and monoethanolamine (MEA). The process consists of two stages: the synthesis of N-(2-hydroxyethyl)-2-pyrrolidone (HEP) from GBL and MEA, and the vapor-phase dehydration of HEP to NVP.
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| Web Release Date:
April 10, 2008
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460-468
Ferromagnetic Interactions in Non-Kekulé Polymers. II
M. Hatanaka* and R. Shiba
[Full Text PDF(J-STAGE)] Free Access Article
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Ferromagnetic interactions in two-dimensional non-Kekulé polymers were analyzed. We constructed two-dimensional Wannier functions in non-bonding crystal orbitals (NBCOs), and PNBCO (product of NBCO) was as their product. The ferromagnetic interactions were attributed to anti-parallel-spin instabilities in PNBCO.
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| Web Release Date:
April 10, 2008
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469-477
Resonant Microwave Irradiation Effect on the Emission Process of an Organic Electroluminescent Material
H. Okimi, Y. Sakaguchi,* K. Asada, and M. Hara
[Full Text PDF(J-STAGE)]
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Spin conversion in the electroluminescence of poly(p-phenylenevinylene derivatives) was enhanced by the removal of electricity. This is due to the decrease of the exchange interaction between the component radical ions whose magnitude increases with the applied voltage.
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| Web Release Date:
April 10, 2008
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| 478-488
Evaluation of Metal Toxicity in Chlorella kessleri from the Perspective of the Periodic Table
K. Fujiwara,* Y. Matsumoto, H. Kawakami, M. Aoki, and M. Tuzuki
[Full Text PDF(J-STAGE)]
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The toxicities of 33 metals (36 species of metal ions) in a micro-alga, Chlorella kessleri were investigated and compared to several parameters such as ion radii, stability constants of several ligands, solubility products, and heats of formation (enthalpy). Intracellular distribution of zinc was also determined by using a zinc-fluorescent probe under a confocal laser microscope, and the result shows the intracellular distribution of pH could be an important factor for the intracellular distribution of zinc.
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| Web Release Date:
April 10, 2008
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| 489-494
Bis(1-methylimidazolyl)diselenide and 1-Methylimidazole-2-selenolate Complexes of Zinc, Cadmium, and Mercury: Synthesis, Characterization, and Their Conversion to Metal Selenide Quantum Dots
G. Kedarnath, L. B. Kumbhare, V. K. Jain,* A. Wadawale, G. K. Dey, C. Thinaharan, S. Naveen, M. A. Sridhar, and J. S. Prasad
[Full Text PDF(J-STAGE)]
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The complexes [M(OAc)2{(MeImSe)2}] (M = Zn, Cd, and Hg), prepared by reaction of metal acetates with bis(1-methylimidazolyl)diselenide in methanol, on thermolysis gave metal selenide quantum dots which were characterized by UV–vis, photoluminescence, XRD, EDAX, SAED, and TEM. The crystal structure of [Cd(OAc)2{(MeImSe)2}] was unambiguously established by single-crystal X-ray diffraction.
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| Web Release Date:
April 10, 2008
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| 495-501
Total Syntheses of Bistratamides J, E, and H from Two Types of ΔAla-Containing Oligopeptides
H. Suzuki, M. Andoh, Y. Yonezawa, S. Akai, C. Shin, and K. Sato*
[Full Text PDF(J-STAGE)]
The total syntheses of naturally occurring bis- and tris(heterocyclic)cyclopeptide bistratamides J (1), H (2), and E (3) from two types of dehydropeptides are described.
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| Web Release Date:
April 10, 2008
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| 502-505
Rhodium-Catalyzed Reaction of 1-Alkynylphosphines with Water Yielding (E)-1-Alkenylphosphine Oxides
A. Kondoh, H. Yorimitsu,* and K. Oshima*
[Full Text PDF(J-STAGE)]
Treatment of 1-alkynylphosphines with a rhodium catalyst in 1,4-dioxane/H2O at reflux provides (E)-1-alkenylphosphine oxides in good yields with perfect stereoselectivity.
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| Web Release Date:
April 10, 2008
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| 506-514
Regio- and Stereoselective Additions of Diphenyldithiophosphinic Acid to N-(1-Alkynyl)amides and 1-Alkynyl Sulfides
S. Kanemura, A. Kondoh, H. Yasui, H. Yorimitsu,* and K. Oshima*
[Full Text PDF(J-STAGE)]
Treatment of N-(1-alkynyl)amides and 1-alkynyl sulfides with diphenyldithiophosphinic acid affords (E)-ketene N,S-acetals and S,S-acetals, respectively, in good yields.
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| Web Release Date:
April 10, 2008
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| 515-517
Copper(I) Thiophene-2-carboxylate (CuTC): A Versatile Non-Nitrogen Ligand-Based Catalyst for Direct N-Arylation of Imidazole and Pyrazole Using Aryl Iodides, Aryl Bromides, and Aryl Chlorides
H. Maheswaran,* G. G. Krishna, V. Srinivas, K. L. Prasanth, and C. V. Rajasekhar
[Full Text PDF(J-STAGE)] [Supporting Information]
A new protocol to prepare N-aryl heterocyclic adducts in excellent yields via cross-coupling of HN-heterocycles with aryl halides is reported using commercially available and easy-to-prepare copper(I) thiophene-2-carboxylate (CuTC) as catalyst.
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| Web Release Date:
April 10, 2008
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| 518-520
Diels–Alder Reaction of 2,3-Bis(pinacolatoboryl)-1,3-butadiene: Facile Preparation of 1,2-Bis(pinacolatoboryl)cyclohexenes and -1,4-cyclohexadiene
M. Shimizu,* K. Shimono, T. Kurahashi, S. Kiyomoto, I. Nagao, and T. Hiyama
[Full Text PDF(J-STAGE)]
The Diels–Alder reaction of 2,3-bis(pinacolatoboryl)-1,3-butadiene with electron-deficient olefins proceeds smoothly to give the corresponding functionalized 1,2-diborylcyclohexenes or -cyclohexa-1,4-diene in moderate to excellent yields. The diborylated adducts are readily transformed into polysubstituted cyclic compounds.
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| Web Release Date:
April 10, 2008
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| 521-524
High-Trivalent Rare Earth Ion Conduction in Solids Based on NASICON-Type Phosphate
Y. Hasegawa, S. Tamura, M. Sato, and N. Imanaka*
[Full Text PDF(J-STAGE)] [Supporting Information]
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Relationship between R3+ ion conductivity and A ratio (the migrating trivalent cationic size ratio to the lattice volume) for (R0.05Zr0.95)80/79Nb(PO4)3 (R: rare earths) was investigated. The optimum ion conducting pathway was obtained for R=Dy, realizing the highest trivalent ion conductivity.
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| Web Release Date:
April 10, 2008
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| 525-529
Selective Oxidation of Benzyl Alcohol by Heteropolytungstate as Reaction-Controlled Phase-Transfer Catalyst with Hydrogen Peroxide
Z. Weng, J. Wang, S. Zhang, and X. Jian*
[Full Text PDF(J-STAGE)]
Under the action of H2O2, insoluble Q9PW9O34 (Q+ represents [C7H7N(CH3)3]+) formed Q3PW4O24, which dissolved in solvent and acted as homogeneous catalyst. When the H2O2 was completely consumed, the catalyst could be separated from the reaction system as precipitate easily.
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| Web Release Date:
April 10, 2008
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| 530-535
Synthesis and Characterization of 2,9-Bis(perfluorobutyl)pentacene as an n-Type Organic Field-Effect Transistor
K. Okamoto, K. Ogino,* M. Ikari, and Y. Kunugi
[Full Text PDF(J-STAGE)]
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A novel n-type semiconductor, 2,9-bis(perfluorobutyl)pentacene, was successfully synthesized. OFETs fabricated with this compound afforded n-type FET response showing electron mobility of 1.7× 10−3cm2 V−1 s−1 using Ag source–drain electrodes.
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| Web Release Date:
April 10, 2008
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| 536-538
Electrochemical and Chemical Doping Behavior of Bithiophene–Bithiazole Copolymer
S. Otsuka, H. Fukumoto, and T. Yamamoto*
[Full Text PDF(J-STAGE)]
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Copoly-1 receives electrochemical p- and n-doping at 0.69 and −2.13 V vs. Ag+/Ag. Chemical p-doping of a Copoly-1 cast film causes elongation of the distance between polymer main chains separated by the R side chains.
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