-
Tsukasa Mizuhara, Kazuhito Hioki, Megumi Yamada, Hideaki Sasaki, Daiki ...
2008 Volume 37 Issue 12 Pages
1190-1191
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
A simple and mild method for the direct conversion of carboxylic acids to primary amides has been developed by using 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMT-MM). The reaction proceeds by adding DMT-MM to a mixture of carboxylic acids and an ammonia source in methanol, 2-propanol, or THF without any additives. The present method is quite practical in that aqueous ammonia or ammonium chloride/triethylamine can be used as an ammonia source. Methanol or 2-propanol is an ideal polar solvent because it is inexpensive, can be removed by rotary evaporator, and solubilizes many kinds of polar or nonpolar compounds.
View full abstract
-
Takahiro Sasamori, Masahiro Kawai, Nobuhiro Takeda, Norihiro Tokitoh
2008 Volume 37 Issue 12 Pages
1192-1193
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Stable
cis-dichloro- and
cis-dimethylplatinum(II) complexes bearing bulky primary phosphines, such as BbtPH
2 (Bbt = 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl) and TbtPH
2 (Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl), were synthesized and isolated as stable compounds. The treatment of
cis-[PtMe
2(PH
2Bbt)
2] with lithium diisopropylamide (LDA) followed by the addition of an alkyl halide afforded the corresponding alkylated complexes,
cis-[PtMe
2(PHRBbt)(PH
2Bbt)] (R=Me, Et, Bu, etc.). The spectroscopic observation of the intermediacy of the lithiated complex,
cis-[PtMe
2(PHLiBbt)(PH
2Bbt)], has been accomplished.
View full abstract
-
Tomoya Iwazaki, Toshiro Semba, Shunsuke Konishi, Takahiro Sezai, Yasus ...
2008 Volume 37 Issue 12 Pages
1194-1195
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Cobalt nanoparticles loaded on an activated carbon catalytically excavated the activated carbon when it was heat-treated in a 1 atm stream of a mixture of hydrogen and argon gases at high temperature. The BET surface area of the activated carbon decreased from 2210 to 1750 m
2 g
−1, and the mesopore volume increased from 0.14 to 0.25 cm
3 g
−1 by heat-treatment at 900 °C for 8 h. As for the XRD pattern of the heat-treated specimen, diffraction peaks from the turbostratic carbon phase were observed. This phase was confirmed by TEM both around the cobalt particles and the walls of the pores formed by the excavation.
View full abstract
-
Yoshimune Nonomura, Mustumi Suzuki
2008 Volume 37 Issue 12 Pages
1196-1197
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
We succeeded in preparing emulsions and microcapsules stabilized by solid particles and biological lipids. The biological lipids prevent the collapse of the microcapsules.
View full abstract
-
Toshiaki Murai, Tohru Takenaka, Shinsuke Inaji, Yusuke Tonomura
2008 Volume 37 Issue 12 Pages
1198-1199
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Fluoride-ion-promoted hydrolysis of phosphoric acid esters and amides to give phosphorofluoridic and phosphoramide fluoridic acid monoester salts takes place upon treatment with a THF solution of TBAF, whereas a similar treatment of phosphorous acid esters generates phosphonic acid monoester salts selectively without introduction of fluorine.
View full abstract
-
Yongbin Xu, Zhongming Ren, Guanghui Cao, Weili Ren, Kang Deng, Yunbo Z ...
2008 Volume 37 Issue 12 Pages
1200-1201
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
The magnetic-field-assisted solvothermal approach has been used in the shape-controlled growth of Te microcrystals. By applying a high magnetic field to the reaction system, the shape of obtained Te microcrystals could be changed greatly. Various techniques such as X-ray diffraction and scanning electron microscopy have been used to characterize the obtained products. The results show that the magnetic field plays a key role in the growth behavior of Te microcrystals. The possible cause of magnetic field effects is discussed.
View full abstract
-
Fuyuki Ito, Tomoyuki Ariyoshi, Nobuaki Soh, Toshifumi Kakiuchi, Tatsua ...
2008 Volume 37 Issue 12 Pages
1202-1203
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Dynamic behavior of a fluorescent probe, a swallow-tailed perylene derivative (Spy-Hp) for detecting hydroperoxides was studied by fluorescence lifetime and transient absorption measurements. The MO calculations suggest the intramolecular charge transfer for Spy-Hp. The excited state lifetime of Spy-Hp is shorter than that of the oxidized form, which was caused by intramolecular fluorescence quenching. These results elucidate the mechanism of Spy-Hp for detecting hydroperoxides in biosamples.
View full abstract
-
Tomoko Kakinuma, Ryoichi Chiba, Takeshi Oriyama
2008 Volume 37 Issue 12 Pages
1204-1205
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
The Michael addition of active methylene compounds to α,β-unsaturated carbonyl compounds in the presence of MS 4A in dimethyl sulfoxide proceeds smoothly to afford the corresponding 1,4-addition products in good to high yields.
View full abstract
-
Masayoshi Tanaka, Kempei Ogura, Souhei Abiko, Naokiyo Koshikawa, Takat ...
2008 Volume 37 Issue 12 Pages
1206-1207
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Poly(ethylene glycol) (PEG)-appended peptide with a binary sequence of hydrophobic and hydrophilic amino acids with 16 residues gave grain-like aggregate in aqueous solution. The peptide segment in the aggregate adopted β-sheet structure, while the peptide itself originally adopted α-helix structure. In the hydrophobic domain constructed by peptide segment, hydrogen bonding rearranged to give secondary structural transition. The α-helix/β-sheet transition simultaneously gave morphological transition from a grain-like state to a fibrous object.
View full abstract
-
Kana Tanabe, Takuma Yasuda, Takashi Kato
2008 Volume 37 Issue 12 Pages
1208-1209
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
OPEN ACCESS
Supplementary material
Three-fold symmetrical pyridinium salts tethering tridodecyloxyphenyl substituents form liquid-crystalline columnar and micellar cubic phases and exhibit photoluminescent properties in liquid-crystalline states.
View full abstract
-
Makoto Saito, Masahiro Itoh, Jun Iwamoto, Ken-ichi Machida
2008 Volume 37 Issue 12 Pages
1210-1211
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Platinum catalysts supported on sulfated zirconia powders highly promote the hydrogen-selective catalytic reduction (H
2-SCR) of NO
x at 100 °C with formation of ammonia intermediate species derived from protons of the sulfonate groups fixed as superacid sites on the surface, which are detected by in situ DRIFTs measurements.
View full abstract
-
Sang Woo Joo, Yun Hee Jang, Sungu Hwang
2008 Volume 37 Issue 12 Pages
1212-1213
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
The p
Ka values of bipyridines in aqueous solution were calculated using a density functional theoretical method in combination with the Poisson–Boltzmann continuum solvation model. Calculated p
Ka values correlates well with experimental results.
View full abstract
-
Masamichi Nishihara, Yoshihiko Murakami, Takashi Shinoda, Jun Yamamoto ...
2008 Volume 37 Issue 12 Pages
1214-1215
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
To create a stimuli-responsive micelle, we synthesized a novel temperature-responsive amphiphilic block copolymer, poly(ethylene glycol)-
block-poly{6-[4-(4-pyridylazo)phenoxy]hexyl methacrylate} [PEG-
b-P(AzoPyl)], by undertaking the RAFT polymerization of an AzoPyl monomer with a PEG macro-RAFT reagent. This block copolymer possesses a liquid crystalline unit derived from a hydrophobic AzoPyl/carboxylic acid complex. The PEG-
b-P(AzoPyl/decanoic acid (C
9COOH)) complex formed a micelle structure (weight-average diameter = 68 nm). DSC results confirmed that the PEG-
b-P(AzoPyl/C
9COOH) micellar solution exhibited thermodynamic phase-transition behavior.
View full abstract
-
Takayoshi Kuroda-Sowa, Zhong Yu, Yuka Senzaki, Kunihisa Sugimoto, Masa ...
2008 Volume 37 Issue 12 Pages
1216-1217
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Novel Fe
II complexes with N
4O
2 donor sets having extended π-conjugated aromatic rings, [Fe(qnal)
2]·CH
2Cl
2 and [Fe(qnal)
2], show abrupt spin transitions at 220 and 265 K, respectively. Both complexes show LIESST effects below 80 K.
View full abstract
-
Ryoichi Chiba, Takeshi Oriyama
2008 Volume 37 Issue 12 Pages
1218-1219
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
In the presence of molecular sieves (MS) 4A in dimethyl sulfoxide (DMSO), a highly stereoselective Knoevenagel reaction of various
N-tosylimines with active methylene compounds proceeded smoothly, producing the corresponding Knoevenagel products in high to excellent yields.
View full abstract
-
Naoko Ichieda, Tetsuya Kamimura, Yuko Wasada-Tsutsui, Yasuhiro Funahas ...
2008 Volume 37 Issue 12 Pages
1220-1221
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
New tetrakis(2-pyridonato)copper(II)–palladium(II)/platinum(II) complexes, [CuPd(2-pyrd)
4(py)] (
1), [CuPt(2-pyrd)
4(py)] (
2), [CuPd(2-pyrd)
4(H
2O)] (
3), and [CuPt(2-pyrd)
4(H
2O)] (
4) (2-pyrd = 2-pyridone, py = pyridine), were prepared, and the metal–metal bonds between Pt
II/Pd
II and Cu
II atoms were evidenced on the basis of X-ray structural and ESR spectroscopic methods, which were also supported from the DFT calculations.
View full abstract
-
Irene Suárez del Villar, Ana Gradillas, Angel Gómez-Oval ...
2008 Volume 37 Issue 12 Pages
1222-1223
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Synthesis of new bicyclic structures containing cyclopropanes, related to selective iNOS inhibitor ONO-1714, is described. We have evaluated the effect of the compounds obtained on the production of nitric oxide in lipopolysaccharide and interferon-gamma stimulated mouse peritoneal macrophages and on in vitro iNOS activity assays.
View full abstract
-
Kazuaki Aburaya, Taketoshi Murai, Ichiro Hisaki, Norimitsu Tohnai, Mik ...
2008 Volume 37 Issue 12 Pages
1224-1225
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Enantioresolution of racemic 2,2-dimethyl-3-hexanol in solid state was achieved with four kinds of crystalline matrices of cholamide, yielding its S enantiomer in high purity and yields. This intercalation method accompanied bilayer inversion on their lipophilic sides.
View full abstract
-
Makoto Saito, Masahiro Itoh, Jun Iwamoto, Ken-ichi Machida
2008 Volume 37 Issue 12 Pages
1226-1227
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
In situ formation of ammonia and NO
x reduction with high N
2 selectivity based on it were observed in the hydrogen selective catalytic reduction (H
2-SCR) of NO
x over a platinum catalyst supported on a Fe-doped SnP
2O
7 powder with strong solid acidity even under conditions of high oxygen contents of about 10 vol %.
View full abstract
-
Naoya Morohashi, Kazutoshi Nagata, Shinya Tanaka, Yoshihiro Ohba, Tets ...
2008 Volume 37 Issue 12 Pages
1228-1229
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Sulfur-bridged phenol dimer and tetramer were converted into corresponding oligo(benzoic acid)s, which have high complexation ability toward lanthanide ions as revealed by solvent extraction study.
View full abstract
-
Seng Kue Lee, Lu Shi, Ryohei Ishige, Sungmin Kang, Masatoshi Tokita, J ...
2008 Volume 37 Issue 12 Pages
1230-1231
Published: December 05, 2008
Released on J-STAGE: November 01, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
This paper presents the first example of an antiferroelectric banana phase in a bent molecule with a low bend angle of about 60°.
View full abstract
-
Jun-ichi Kadokawa, Masakazu Suenaga, Yoshiro Kaneko
2008 Volume 37 Issue 12 Pages
1232-1233
Published: December 05, 2008
Released on J-STAGE: November 08, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
We describe synthesis and fluorescence properties of phenyl and styryl p-disubstituted fluorescein. The compound was synthesized in three reaction steps from
trans,
trans,
trans-1,6-diphenyl-1,3,5-hexatriene. The fluorescence spectrum of the product in alkaline methanol solution suggested occurrence of intramolecular FRET from the donor site of the benzene moiety to the acceptor site of the xanthene moiety.
View full abstract
-
Yoshiaki Sugihara, Ken-ichi Takeda, Jin Zhao, Yui Aoyama, Harunori Oku ...
2008 Volume 37 Issue 12 Pages
1234-1235
Published: December 05, 2008
Released on J-STAGE: November 08, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
1,2-Thiazetidines
2 and
3 were synthesized by the reactions of
anti- and
syn-9,9′-bibenzonorbornenylidenes with TsNSO, followed by deimination with SmI
2. Heating
2 and
3 neat produced a mixture containing aziridines, thiiranes, and alkenes.
View full abstract
-
Kouzou Matsumoto, Kaori Miki, Hiroyuki Kurata, Nobuo Rikitake, Tatsuo ...
2008 Volume 37 Issue 12 Pages
1236-1237
Published: December 05, 2008
Released on J-STAGE: November 08, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
(5-Acetyl-2-thienyl)(5-benzoyl-2-thienyl)(5-bromo-2-thienyl)(5-cyano-2-thienyl)methane has been synthesized as the first chiral tetrakis(2-thienyl)methane derivative. This compound can be resolved by chiral HPLC. Since Raney nickel reduction of tetrakis(2-thienyl)methane derivatives gave tetraalkylmethane derivatives, chiral tetrakis(2-thienyl)methane derivatives will be good precursors for a number of cryptochiral tetraalkylmethanes and their derivatives.
View full abstract
-
Yuji Kubo, Wataru Yoshizumi, Tsuyoshi Minami
2008 Volume 37 Issue 12 Pages
1238-1239
Published: December 05, 2008
Released on J-STAGE: November 08, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
This study describes the synthesis of a new compound: boronate ester-substituted cyclotricatechylene
1. The structure-directing property of the boronic acid–diol interactions is responsible for the shuttlecock-shaped structure of
1, which led to the gelation of several solvents. The distribution control of trigonal and tetrahedral boronate esters allows phase transition via chemical stimulus.
View full abstract
-
Tatsuya Fujino, Kouji Hirota, Kunihiro Ohta, Tahei Tahara
2008 Volume 37 Issue 12 Pages
1240-1241
Published: December 05, 2008
Released on J-STAGE: November 08, 2008
JOURNAL
RESTRICTED ACCESS
Using a femtosecond fluorescence up-conversion microscope, viscosity values in yeast cells (budding, wine, and fission) were estimated based on ultrafast fluorescence dynamics of a fluorescent probe dye, Malachite Green. The decay time of the S
1 state of Malachite Green in cytoplasm was determined to be 2.2–2.4 ps at room temperature, which corresponded to the viscosity value of 5–6 cP. Nondestructive estimation of viscosity value in cells (in-cell viscosity) was carried out.
View full abstract
-
Hiroyuki Yoshida, Takuya Isomura, Akihiko Fujii, Masanori Ozaki
2008 Volume 37 Issue 12 Pages
1242-1243
Published: December 05, 2008
Released on J-STAGE: November 08, 2008
JOURNAL
RESTRICTED ACCESS
We report an anomalous destruction of cholesteric blue phases I and II upon photopolymerizing a liquid crystal mixture composed of mono- and diacrylate monomers. The platelet texture characteristic of the blue phase collapsed when the sample was irradiated by a weak UV light source, while usual freezing of both blue phases I and II was obtained upon photopolymerization by a stronger light source. The phase destruction seems to be reflecting the robustness of the cubic lattice structure against external purterbations.
View full abstract
-
Ping-Jyun Sung, Yin-Di Su, Tsong-Long Hwang, Li-Fan Chuang, Jih-Jung C ...
2008 Volume 37 Issue 12 Pages
1244-1245
Published: December 05, 2008
Released on J-STAGE: November 08, 2008
JOURNAL
RESTRICTED ACCESS
The first chloride-containing caryophyllane-type sesquiterpenoid, designated as rumphellatin D (
1), was isolated from gorgonian coral
Rumphella antipathies. The structure of
1 was established by spectral-data analysis. Rumphellatin D (
1) showed moderate inhibitory effects on elastase release by human neutrophils.
View full abstract
-
Hiroaki Tanaka, Masaaki Ichinohe, Akira Sekiguchi
2008 Volume 37 Issue 12 Pages
1246-1247
Published: December 05, 2008
Released on J-STAGE: November 08, 2008
JOURNAL
RESTRICTED ACCESS
1,2-Dihydrosilenes were synthesized by the photolysis of silyldiazomethane derivatives bearing one bulky trialkylsilyl group SiR[CH(SiMe
3)
2]
2 (R=Me and
i-Pr) and two hydrogen atoms on the silicon atom. The selective migration of the hydrogen atom to the carbene center occurred, leading to stable
trans-1,2-dihydrosilenes, which were characterized by their spectroscopic data. An X-ray analysis of the Diels–Alder adduct demonstrated the trans geometry of the 1,2-dihydrosilene.
View full abstract
-
Fumiaki Ono, Kuniaki Nishioka, Shirou Itami, Hirotaka Takenaka, Tsuneo ...
2008 Volume 37 Issue 12 Pages
1248-1249
Published: December 05, 2008
Released on J-STAGE: November 08, 2008
JOURNAL
RESTRICTED ACCESS
An improved method for the synthesis of allylic
gem-diacetates (acylals) is described. The desired acylals are obtained by the reaction of α,β-unsaturated aldehydes with acetic anhydride using a catalytic amount of lithium tetrafluoroborate in diethyl ether at room temperature.
View full abstract
-
Koichiro Kitamura, Chuya Yoshida, Md Salimullah, Yasunori Kinoshita, M ...
2008 Volume 37 Issue 12 Pages
1250-1251
Published: December 05, 2008
Released on J-STAGE: November 08, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
A rapid small-scale peptide synthesis method was developed based on in vitro translation system. It enables us to obtain peptides within a day. Comparing the biological activity of in vitro synthesized peptides with that of chemically synthesized ones, the activity of both peptides was confirmed to be equivalent. The recovered peptides were assumed correct in their sequence through MS analysis and estimated to be more than pmoles/run. Moreover, this method could produce highly hydrophobic peptide, otherwise unavailable.
View full abstract
-
Daisuke Takahashi, Hiroshi Tanaka, Emiko Nakane, Takashi Takahashi
2008 Volume 37 Issue 12 Pages
1252-1253
Published: December 05, 2008
Released on J-STAGE: November 15, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
S-alkylation reaction of a thiol group on a carbohydrate probe with 2-bromoacetamide-coated glass slide as a loading reaction was developed under physiological conditions, and the synthesis of carbohydrate microarrays using the immobilization reaction was achieved.
View full abstract
-
Chizuru Hongo, Michiya Matsusaki, Kohji Nishida, Mitsuru Akashi
2008 Volume 37 Issue 12 Pages
1254-1255
Published: December 05, 2008
Released on J-STAGE: November 15, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Collagen hydrogels with oriented triple-helix were fabricated simply via the axial orientation of a dense collagen solution onto a glass plate and cross-linking. The orientation of the collagen triple-helix in the gels was clearly confirmed by X-ray diffraction measurements. The tensile strength of the oriented collagen gels in parallel was twofold higher than that of non-oriented gels as a control. Our collagen gels with oriented triple-helix can be useful as novel scaffolds in the tissue engineering field.
View full abstract
-
Hiroshi Nishiyama, Junichi Takeuchi, Hiroshi Hayase, Nobuo Saito, Yasu ...
2008 Volume 37 Issue 12 Pages
1256-1257
Published: December 05, 2008
Released on J-STAGE: November 15, 2008
JOURNAL
RESTRICTED ACCESS
Various types of p-block metal oxides and nitrides were employed as catalyst supports for Ru metal in liquid-phase citral hydrogenation. Compounds containing Ga
3+ ions, in particular GaOOH, were found to exhibit remarkable support effects on the enhancement of catalytic activity and reaction selectivity for the production of α,β-unsaturated alcohols (nerol and geraniol).
View full abstract
-
Kazuya Yamaguchi, Miyuki Kotani, Keigo Kamata, Noritaka Mizuno
2008 Volume 37 Issue 12 Pages
1258-1259
Published: December 05, 2008
Released on J-STAGE: November 15, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
The dicopper-substituted γ-Keggin silicotungstate with bis-μ-1,1-azido ligands TBA
4H
2[γ-SiW
10O
36Cu
2(μ-1,1-N
3)
2] (TBA = tetrabutylammonium) could act as an effective homogeneous precatalyst for the one-pot synthesis of various kinds of 1,4-disubstituted-1,2,3-triazole derivatives from organic halides, NaN
3, and alkynes.
View full abstract
-
Toshinori Matsushima, Ryosuke Kimura, Masahiro Asahara, Hideyuki Murat ...
2008 Volume 37 Issue 12 Pages
1260-1261
Published: December 05, 2008
Released on J-STAGE: November 15, 2008
JOURNAL
RESTRICTED ACCESS
We investigated photoluminescence (PL) and electroluminescence (EL) characteristics of 3,3′-dicyano-[7,7′-biindolizine]-1,1′,2,2′-tetracarboxylic acid 1,2-diethyl 1′,2′-dimethyl ester (Et
2Me
2-biInd). We found that Et
2Me
2-biInd has efficient blue PL and a multilayer organic light-emitting diode doped with Et
2Me
2-biInd exhibits a relatively high EL efficiency of 1.8±0.1%.
View full abstract
-
Tomonori Waku, Michiya Matsusaki, Suwabun Chirachanchai, Mitsuru Akash ...
2008 Volume 37 Issue 12 Pages
1262-1263
Published: December 05, 2008
Released on J-STAGE: November 15, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Biodegradable chitosan-based nanospheres were prepared by the one-step polymerization of
L-phenylalanine-
N-carboxylic anhydride initiated by water-soluble chitosan. The obtained chitosan-
g-poly(phenylalanine) nanospheres with a diameter of 220–290 nm showed a strong positive charge, and thus it will be valuable as novel biodegradable cationic nanosphere.
View full abstract
-
Yanfeng Zhang, Xiaohui Feng, Hui Liu, Cici Wang, Jingze Liu, Yu Wei
2008 Volume 37 Issue 12 Pages
1264-1265
Published: December 05, 2008
Released on J-STAGE: November 15, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Hierarchical TiO
2 hollow microspheres composed of rutile nanorods were directly prepared by a simple, efficient, facile, and template-free hydrothermal method with TiCl
4 solution in the presence of hydrochloric acid.
View full abstract
-
Norihito Hiyoshi, Katsunori Yogo, Tatsuaki Yashima
2008 Volume 37 Issue 12 Pages
1266-1267
Published: December 05, 2008
Released on J-STAGE: November 15, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Mesoporous MSU-H silica modified with 3-[2-(2-aminoethylamino)ethylamino]propyltrimethoxysilane showed high capacity of 3.08 mmol·g
−1 for carbon dioxide adsorption under 15 kPa of carbon dioxide and 12 kPa of water vapor at 333 K.
View full abstract
-
Ki Seok Kim, Sang Mook Kim, Gun Young Jung
2008 Volume 37 Issue 12 Pages
1268-1269
Published: December 05, 2008
Released on J-STAGE: November 15, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
An effective wet-chemical method to produce highly monodispersed ZnO nanoparticles (4–6 nm diameters) is presented. A thermal growth-inhibitive phenomenon of ZnO precursor by PEI was employed to generate monodispersed nanoparticles at low temperature (40 °C) and to improve the nanoparticle properties in terms of both size distribution and crystallinity.
View full abstract
-
Yasuhiro Sakurai, Hodaka Sanuki, Rushiru Komatsu-Watanabe, Tomoko Ideg ...
2008 Volume 37 Issue 12 Pages
1270-1271
Published: December 05, 2008
Released on J-STAGE: November 22, 2008
JOURNAL
RESTRICTED ACCESS
By means of a stopped-flow electron spin resonance (ESR) method, the second-order rate constant, defined for reduction of the hydroxyl radical adduct of 5,5-dimethyl-1-pyrroline
N-oxide (DMPO/OH) by ascorbic acid at pH 7.4, was evaluated to be 5.2±0.2×10
3 M
−1 s
−1, which was at least 700 times faster than that of 2,2,6,6-tetramethyl-4-hydroxylpiperidine-
N-oxyl (TEMPOL) radical (7 M
−1 s
−1).
View full abstract
-
Yugao Guo, Yuzan Yu, Xiujun Liu, Enqi Tang
2008 Volume 37 Issue 12 Pages
1272-1273
Published: December 05, 2008
Released on J-STAGE: November 22, 2008
JOURNAL
RESTRICTED ACCESS
A novel electric-field-enhanced liquid-phase microextraction system based on hollow fiber membrane has been developed. By introducing the radially enhancing electric field into this system, it is feasible to accelerate the mass-transfer rate of analyte and shorten the equilibrium time. In the process, the extract time was less than 4 min, which is much less than that of traditional liquid-phase microextraction. Further study is in progress.
View full abstract
-
Qiang Guo, Zhao Tang, Yuan Liu
2008 Volume 37 Issue 12 Pages
1274-1275
Published: December 05, 2008
Released on J-STAGE: November 22, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Co
3O
4–CeO
2–MnO
x catalysts prepared by coprecipitation are very active for CO oxidation at low temperature, and 100% CO conversion is obtained at −70 °C over the best catalyst; Adding a small mount of MnO
x in CoO
x–CeO
2 can improve the dispersion of cobalt oxide and ceria effectively, which leads to high CO oxidation activity.
View full abstract
-
Zhongrong Shen, Keiko Miyabayashi, Mami Higashimoto, Tatsuya Shimoda, ...
2008 Volume 37 Issue 12 Pages
1276-1277
Published: December 05, 2008
Released on J-STAGE: November 22, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
In this paper, we investigated a convenient shape transformation of gold nanoparticles to nanodisks by UV irradiation in chloroform with the aid of protective agents carrying a triphenylene moiety, which absorbs UV energy and plays a role as a mask in directing the deposition of gold atoms at aspecific position.
View full abstract
-
Yosuke Endo, Takafumi Sasaki, Kiyoshi Kanie, Atsushi Muramatsu
2008 Volume 37 Issue 12 Pages
1278-1279
Published: December 05, 2008
Released on J-STAGE: November 22, 2008
JOURNAL
RESTRICTED ACCESS
Highly crystalline cubic indium tin oxide (ITO) nanoparticles with narrow size distribution were successfully prepared directly in one step from a mixed solution of indium and tin salts by a solvothermal method with ethylene glycol as solvent. Also, size was easily manipulated by changing conditions, such as aging period and sodium hydroxide concentration.
View full abstract
-
Kentaro Misawa, Jun Matsumoto, Norihiro Tsuji, Yoichi Matsuzaki, Shun- ...
2008 Volume 37 Issue 12 Pages
1280-1281
Published: December 05, 2008
Released on J-STAGE: November 22, 2008
JOURNAL
RESTRICTED ACCESS
The electronic spectrum of benzo[
e]pyrene (BeP) was recorded using resonance-enhanced multi-photon ionization (REMPI) spectroscopy. A number of bands were observed and assigned to the origin band and vibronic bands of the S
1–S
0 transition. Ab initio calculations were performed to assign the vibrational structures in S
1. The origin band of BeP is well separated in energy from the origin band of benzo[
a]pyrene (BaP), an isomer of BeP, and so BeP and BaP can be readily distinguished by the REMPI method, despite having the same mass.
View full abstract
-
Setsuko Yamane, Yoshihiro Sasaki, Kazunari Akiyoshi
2008 Volume 37 Issue 12 Pages
1282-1283
Published: December 05, 2008
Released on J-STAGE: November 22, 2008
JOURNAL
RESTRICTED ACCESS
The hybrid nanogels were prepared by condensation of silanol groups grafted to cholesterol-bearing pullulan at ambient temperature and pH without any catalysts or organic solvents. This is a new method for preparation of organic–inorganic hybrid nanogels with dual network structures of both chemically crosslinked points with siloxane bonds and physically crosslinked hydrophobic association points.
View full abstract
-
Xiaoxia Wang, Yaohong Zhang, Xiaohui Xiao, Xinsheng Li
2008 Volume 37 Issue 12 Pages
1284-1285
Published: December 05, 2008
Released on J-STAGE: November 22, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
The conjugate addition of indoles to 4-aryl-4-oxobut-2-enoates was achieved with FeCl
3 as a catalyst under mild conditions. The reaction was highly regioselective and afforded a variety of new 3-substituted indoles in good to excellent yields.
View full abstract
-
Min Chen, Deli Jiang, Jimin Xie, Jianjun Zhu, Yunlong Wu
2008 Volume 37 Issue 12 Pages
1286-1287
Published: December 05, 2008
Released on J-STAGE: November 22, 2008
JOURNAL
RESTRICTED ACCESS
Hollow hexagonal fluorapatite (FHAp) nanoprisms have been successfully prepared via a template-free method with the assistance of Na
2EDTA/citric acid (CA) mixed chelating reagent. These novel hollow FHAp nanoprisms have an outer length of about 1 μm, an average outer diameter of 150 nm, and a shell thickness of about 50 nm. The effects of reaction temperature and chelating reagent on the formation of final products were studied. A possible formation mechanism for the hollow FHAp nanoprisms is proposed.
View full abstract
