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Kazuhiro Sayama, Nini Wang, Yugo Miseki, Hitoshi Kusama, Nobuko Onozaw ...
2010 Volume 39 Issue 1 Pages
17-19
Published: January 05, 2010
Released on J-STAGE: December 05, 2009
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Supplementary material
Carbonate ions in the aqueous electrolyte solution improved both the photocurrent and the stability of a porous BiVO
4 semiconductor electrode used for water splitting under visible light up to 520 nm. The photocurrents in AHCO
3 (A = Na and K) solutions at 1.23 V were approximately six times higher than that in Na
2SO
4 aqueous solution. The maximum incident photon-to-current efficiency (IPCE) was 45% at 420 nm without any surface modifications.
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Sujing Li, Yunqian Wei, Jianguo Huang
2010 Volume 39 Issue 1 Pages
20-21
Published: January 05, 2010
Released on J-STAGE: November 28, 2009
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Supplementary material
Superhydrophobic cellulosic materials with remarkable self-cleaning ability and satisfactory long-term chemical stability were fabricated by depositing self-assembled silane monolayer onto ultrathin titania film precoated nanofibers of natural cellulosic substances without altering the initial material structures and morphologies.
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Hisashi Shimakoshi, Masashi Nishi, Akihiro Tanaka, Katsumi Chikama, Yo ...
2010 Volume 39 Issue 1 Pages
22-23
Published: January 05, 2010
Released on J-STAGE: December 05, 2009
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Supplementary material
A vitamin B
12 derivative was immobilized on a core–shell hyperbranched polymer, and the hybrid polymer was characterized by GPC, UV–vis, IR as well as TEM analyses. The hybrid polymer exhibits catalysis for the dehalogenation of phenethyl bromide to form ethylbenzene and 2,3-diphenylbutane by irradiation with UV light at room temperature.
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Hajime Iwamoto, Yukimi Yawata, Yoshimasa Fukazawa, Takeharu Haino
2010 Volume 39 Issue 1 Pages
24-25
Published: January 05, 2010
Released on J-STAGE: December 05, 2009
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Supplementary material
The tether-assisted synthesis of [3]rotaxane by olefin metathesis is described. The bis(crown ether)s, in which two crown ethers are connected by a linker, were converted to tethered rotaxanes, followed by removal of the linkers to produce [3]rotaxane. The biscrown structures promoted the formation of the tethered rotaxane, resulting in a notable improvement in the yield of the [3]rotaxane.
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Shouichi Somekawa, Leny Yuliati, Asako Ishikawa, Kazuhiro Takanabe, Ka ...
2010 Volume 39 Issue 1 Pages
26-27
Published: January 05, 2010
Released on J-STAGE: December 05, 2009
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High surface area Co
3O
4–CeO
2 catalysts were prepared by the simple calcination of carbonate–precursor mixtures at 300 °C. The Co
3O
4–CeO
2 catalyst with a Co/Ce molar ratio of 1 showed high activity for toluene decomposition, comparable to that of Pt(0.08 wt %)/zeolite catalyst. The total decomposition of toluene was achieved at degradation temperatures as low as 200 °C. The Co
3O
4–CeO
2 catalyst was highly stable, even after two weeks of reaction.
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Katsuhiko Kanaizuka, Shoji Iwakiri, Teppei Yamada, Hiroshi Kitagawa
2010 Volume 39 Issue 1 Pages
28-29
Published: January 05, 2010
Released on J-STAGE: December 05, 2009
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A novel coordination polymer of zinc(II) biphenyldicarboxylate bearing a sulfone group, [Zn(sbdc)(H
2O)
3]·(H
2sbdc)·H
2O (H
2sbdc: sulfone biphenyldicarboxylic acid), has been synthesized. It is composed of a one-dimensional chain structure of alternating Zn(II) cations and sbdc anions. This coordination polymer possesses noncoordinating uncharged acid H
2sbdc existing between the chains with hydrogen-bonding networks. The proton conductivity of [Zn(sbdc)(H
2O)
3]·(H
2sbdc)·H
2O strongly depended on the relative humidity (RH), being 2.5 × 10
−7 S cm
−1 at 95% RH. The activation energy for proton conductivity was estimated to be 0.32 eV at 95% RH.
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Nikolay O. Mchedlov-Petrossyan, Natalya A. Vodolazkaya, Natalya V. Sal ...
2010 Volume 39 Issue 1 Pages
30-31
Published: January 05, 2010
Released on J-STAGE: December 05, 2009
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Supplementary material
Fluorescein is exclusively popular owing to bright fluorescence of its R
2− dianion. While the structure of the latter and tautomerism of the H
2R form are well established, only the species with COO
− and OH groups has been supposed for HR
− up to now. Using absorption, emission, and excitation at different pH in non-HBD solvents, DMSO, acetonitrile, and acetone, we reveal that 10–12% of HR
− ions nevertheless exist as “phenolate” monoanion with nonionized COOH group.
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Miwa Murakami, Tadashi Shimizu, Masataka Tansho, Tomoko Akai, Tetsuo Y ...
2010 Volume 39 Issue 1 Pages
32-33
Published: January 05, 2010
Released on J-STAGE: December 05, 2009
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To study microstructure of Na
2O–B
2O
3–SiO
2–Al
2O
3 glass, which is a starting material for preparing porous glass,
11B one-dimensional (1D) magic-angle spinning (MAS) spectra and results of two-dimensional (2D)
11B–
11B homonuclear correlation experiment under MAS are examined at 21.8 T. We conclude that two of the four peaks observed for
11B are assigned to borate rings, which we assign as the main components in the boron-rich phase to be removed by acid leaching.
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Hye-Li Jeong, Young-Duk Huh
2010 Volume 39 Issue 1 Pages
34-35
Published: January 05, 2010
Released on J-STAGE: December 05, 2009
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Hexagonal needles of BaSiF
6 microcrystals have been prepared by using a hydrothermal method with Ba(NO
3)
2, SiO
2, and HF in the presence of NH
4Cl or ethylenediamine dihydrochloride as the metal chelating agent. The metal chelating agent plays an important role in controlling the aspect ratios of the BaSiF
6 microcrystals. X-ray diffraction was used to confirm that the axes of the hexagonal needles of BaSiF
6 are aligned along the
c axis.
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Shi Li, Dongfeng Zhao, Jingtang Zheng, Yong Wan
2010 Volume 39 Issue 1 Pages
44-45
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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In this paper, a new-type composite photocatalyst of titania/carbon (TiO
2/C) with three-dimensional ordered macroporous (3DOM) structure was successfully prepared by combining the macroporous structure of 3DOM carbon and the catalytic properties of TiO
2. Under ultraviolet light, the obtained 3DOM TiO
2/C materials were used to degrade Methyl Orange solution as simulated organic waste–water and had a high catalytic activity. Furthermore, compared with commercial Degussa p25 catalyst, obtained 3DOM TiO
2/C materials displayed an excellent regenerative ability.
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Hiroaki Kitahara, Hidehiro Sakurai
2010 Volume 39 Issue 1 Pages
46-48
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Gold nanoclusters stabilized by the poly(
N-vinyl-2-pyrrolidone) hydrophilic polymer (Au:PVP) catalyzed the intramolecular cycloaddition of primary amines to unactivated alkenes in the presence of formic acid derivatives. The reaction proceeded under neutral to slightly acidic conditions in air.
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Norifumi Hashimoto, Takayoshi Hara, Shogo Shimazu, Yusuke Takahashi, T ...
2010 Volume 39 Issue 1 Pages
49-51
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Complete hydrodechlorination of 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane (DDT) and its derivatives 1,1-dichloro-2,2-bis(4-chlorophenyl)ethene (DDE) and 1,1-dichloro-2,2-bis(4-chlorophenyl)ethane (DDD) was achieved using a hydroxyapatite-supported Pd nanoparticle catalyst (Pd
0HAP) in the presence of molecular hydrogen under mild reaction conditions. The catalytic activity of Pd
0HAP was significantly higher than those of previously reported Pd catalysts.
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Hitoshi Furusho, Motoi Oishi, Tetsuo Kishi, Atsuo Yasumori, Yukio Naga ...
2010 Volume 39 Issue 1 Pages
52-53
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Supplementary material
Novel gold nanoparticles (GNPs) as a SERS probe were prepared using two types of functional PEG/oligoamine polymers possessing biotin as biotag molecules at the PEG end or a coumarin moiety as a Raman probe molecule between the PEG and oligoamine segments. Eventually, the GNPs showed excellent dispersion stability under physiological conditions, as well as remarkable SERS signal resulting from molecular recognition between streptavidin and the biotin tag, even in the presence of bovine serum albumin (BSA).
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Zhonghua Wang, Kazuma Yasuhara, Hiroshi Ito, Masaru Mukai, Jun-ichi Ki ...
2010 Volume 39 Issue 1 Pages
54-55
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Supplementary material
Pyranine, a multivalent anionic fluorescent dye, triggered the budding and production of small vesicles from giant vesicles that consisted of zwitterionic and cationic lipids. Calorimetric analysis and microscopic observations revealed that the binding of pyranine induced domain formations of the lipid bilayer followed by membrane fission.
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Hiroyuki Tanabe, Takaharu Kawai, Terunobu Saitoh, Junji Ichikawa
2010 Volume 39 Issue 1 Pages
56-57
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Dicationic species, naphthalene-1,8-diylbis(diphenylmethylium), successfully promoted oxidative arylation of the sulfur atom in (4-
N,
N-dialkylaminophenyl) phenyl sulfides with (4-
N,
N-dialkylaminopheny)silanes, affording triarylsulfonium salts in good yield.
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Yoshinori Arisaka, Atsushi Tamura, Katsumi Uchida, Hirofumi Yajima
2010 Volume 39 Issue 1 Pages
58-59
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Amphiphilic diblock copolymers comprising poly(methyl methacrylate-
co-spirobenzopyran methacrylate) and poly(ethylene glycol) were synthesized using atom transfer radical polymerization to develop a new photoresponsive drug carrier. The diblock copolymers formed core–shell polymeric micelles with photoresponsive inner cores. Spirobenzopyran in the core was isomerized to the merocyanine form by UV irradiation, which resulted in reduction of the micellar size without decrease in the association number. This inferred that the strongly intermolecular interactions between merocyanine residues caused the conformational change of the core segments, following reduction of the micellar size.
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Ming Lu, Shuichi Nagamatsu, Yuji Yoshida, Masayuki Chikamatsu, Reiko A ...
2010 Volume 39 Issue 1 Pages
60-61
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Supplementary material
Introduction of branched alkyl chains at the terminal positions of sexithiophene drastically improves the solubility of the compound, while still maintaining satisfactory charge carrier mobility. Field-effect transistors based on spin-coated films of the sexithiophene derivative exhibited p-type characteristics. Post thermal treatment enhanced crystallinity of the films and afforded a field-effect mobility of 0.11–0.18 cm
2 V
−1 s
−1 and an on/off ratio of 10
4.
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Takashi Nakamura, Masa-aki Ohshima, Hideki Kurokawa, Hiroshi Miura
2010 Volume 39 Issue 1 Pages
62-63
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Hydrogenation activity of aromatic hydrocarbons was remarkably increased when the residual chlorine on Ru/Al
2O
3 and Ru/SiO
2 was removed by washing. On the basis of FT-IR spectra in the CO region, a site active for hydrogenation reactions was created by removal of the residual chlorine.
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Chengyong Li, Xuehua Wang, Gui Chen, Lei He, Hong Cao
2010 Volume 39 Issue 1 Pages
64-65
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Ordered Ni/Al
2O
3 core–shell nanowire arrays were prepared in porous alumina membrane via alternating current electrodeposition and chemical etching methods. The shape of the inner Ni core is columnar with a diameter of 50 nm. The shape of the outer Al
2O
3 shell is a regular hexagon and the well thickness is about 40 nm. This novel structured material can be used as a media for magnetic storage and high-temperature nanoelectronic devices.
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Shuji Kagawa, Hideya Kawasaki, Ryuichi Arakawa
2010 Volume 39 Issue 1 Pages
66-67
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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The degradation effects of benzoylferrocene (BF) on poly(ethylene glycol) (PEG) and poly(methyl methacrylate) (PMMA) were investigated using MALDI-MS. It is supposed that the release of free radicals in solution by BF plays a key role in the decomposition of PEG and PMMA. MALDI-MS combined with examination of the degradation by BF could be applied to the analysis of synthetic polymer structures containing the PEG and PMMA chain.
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Mana Yamashita, Koji Hirano, Tetsuya Satoh, Masahiro Miura
2010 Volume 39 Issue 1 Pages
68-69
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Supplementary material
Readily available cinnamic acids possessing a hydroxy group including ferulic acid efficiently undergo direct decarboxylative arylation under palladium catalysis to form hydroxylated stilbenes. The reaction of related acids is also described.
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Huibin Qiu, Shunai Che
2010 Volume 39 Issue 1 Pages
70-71
Published: January 05, 2010
Released on J-STAGE: December 12, 2009
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Supplementary material
Tighter packing of aromatic group-substituted
N-acylamino acids in micelles at lower basicity significantly enhances intermolecular steric hindrance between adjacent amphiphiles and helps the formation of chiral mesoporous silica with higher enantiopurtiy.
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Toshio Takenaka, Anatoly A. Zinchenko, Kenichi Yoshikawa, Shizuaki Mur ...
2010 Volume 39 Issue 1 Pages
72-73
Published: January 05, 2010
Released on J-STAGE: December 19, 2009
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Supplementary material
Silica nanoparticles, the surface of which was modified by a 3-aminopropylsilyl group, compacted gene-size DNA in aqueous solutions in the presence of Na
+ or K
+. The DNA-compaction efficiency of histone-size (10 nm diameter) nanoparticles is greater than that of large (100 nm) nanoparticles under similar experimental conditions.
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S. Ashok Kumar, Sea-Fue Wang, Jen-Chang Yang, Chun-Ting Yeh, His-Chuan ...
2010 Volume 39 Issue 1 Pages
74-75
Published: January 05, 2010
Released on J-STAGE: December 19, 2009
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Supplementary material
This paper describes surfactant-free and template-free synthesis of gold nanorods/nanobelts (Au-NRBs) using ciprofloxacin (CF) as a reducing/stabilizing agent (a fluoroquinolone antibiotic). Synthesized Au-NRBs were stable and easily soluble in water. Scanning electron microscopy, energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), and UV–visible spectroscopy are used for characterization of synthesized Au-NRBs. Indeed, synthesized Au-NRB-modified electrodes show high electrocatalytic properties toward oxidation of ethanol in alkaline solution (0.1 M NaOH).
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