-
Kazumi Mori, Yuya Oaki, Masayuki Suda, Yasuaki Einaga, Hiroaki Imai
2008 Volume 37 Issue 8 Pages
814-815
Published: August 05, 2008
Released on J-STAGE: June 28, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Nanosized ε-Fe
2O
3 crystals with a diameter below 20 nm were successfully prepared at 600 °C in a mesoporous silica matrix. The formation of the metastable iron oxide occurred through nanoscale segregation in an immiscible SiO
2–Fe
2O
3 system having a mesoporous structure. The nanocrystals incorporated into ca. 50 nm-size particles of the mesoporous silica exhibited a coercive field up to 8 kOe.
View full abstract
-
Takako Ishiguro, Fumitoshi Hirayama, Daisuke Iohara, Kaneto Uekama
2008 Volume 37 Issue 8 Pages
816-817
Published: August 05, 2008
Released on J-STAGE: June 28, 2008
JOURNAL
RESTRICTED ACCESS
The effects of cyclodextrins on crystallization of chlorpropamide from aqueous solutions were investigated. Parent α-, β-, and γ-cyclodextrins and 2-hydroxypropyl-α-, and -β-cyclodextrins and glucose did not change the crystallization of the drug, providing the stable Form A crystal. On the other hand, 2-hydroxybutyl-β-cyclodextrin inhibited the solution-mediated polymorphic transition of the drug, providing the metastable Form II at higher cyclodextrin concentrations and Form III at lower cyclodextrin concentrations. The results suggested that 2-hydoxybutyl-β-cyclodextrin is useful for preparing metastable crystals during crystallization according to the Ostwald rule.
View full abstract
-
Yoshiko Miura, Kazuko Yui, Hiroshi Uchida, Kiyoshi Itatani, Seiichiro ...
2008 Volume 37 Issue 8 Pages
818-819
Published: August 05, 2008
Released on J-STAGE: June 28, 2008
JOURNAL
RESTRICTED ACCESS
When carbon suspended in water was irradiated repetitively by pulsed laser at 532 nm, the carbon particles were gradually consumed, being accompanied with morphology change. Transmission electron microscopy (TEM) showed formation of seemingly entangled long fibrils and/or thin shells from the particles. In the copresence of silver ions, characteristic plasmon absorption peak appeared and formation of nanosized silver particles was evidenced by TEM. Under the typical fluence of 125 mJ·cm
−2·pulse
−1, the quantum yield of silver reduction was 10
−3.
View full abstract
-
Kunio Saruta, Tsuyoshi Ogiku
2008 Volume 37 Issue 8 Pages
820-821
Published: August 05, 2008
Released on J-STAGE: June 28, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
A novel synthesis of 1,4-diazepan-2-ones using a traceless solid-phase approach is described, in which many kinds of 1,4-diazepan-2-one have been efficiently obtained in high purity. The strategy is based on intramolecular alkylation of tertiary amines, followed by elimination of the desired tertiary amines from the generated quarternary ammonium salts.
View full abstract
-
Youhei Yabuno, Yoshikazu Hiraga, Manabu Abe
2008 Volume 37 Issue 8 Pages
822-823
Published: August 05, 2008
Released on J-STAGE: June 28, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
The Paternò–Büchi reactions of tetrahydrobenzofuranols with benzophenone were investigated to reveal site- and stereoselectivity in oxetane formation reactions. Both selectivities were found to be largely dependent on the reaction temperature. The trans selectivity increased with a decrease in temperature, and the more-substituted oxetanes were selectively formed at high temperature.
View full abstract
-
J. S. Yadav, B. V. Subba Reddy, T. Pandurangam, U. V. Subba Reddy
2008 Volume 37 Issue 8 Pages
824-825
Published: August 05, 2008
Released on J-STAGE: June 28, 2008
JOURNAL
RESTRICTED ACCESS
Aziridines undergo smooth ring opening with a range of nitriles in the presence of 10 mol % of phosphomolybdic acid supported on silica gel (PMA–SiO
2) under mild reaction conditions to afford the corresponding imidazolines in good yields and with high regioselectivity. The use of silica gel as solid support facilitates an easy recovery and reuse of the catalyst thereby making the process quite simple, more convenient, and cost-effective.
View full abstract
-
Yousuke Miyano, Hidetaka Nakai, Motohiro Mizuno, Kiyoshi Isobe
2008 Volume 37 Issue 8 Pages
826-827
Published: August 05, 2008
Released on J-STAGE: June 28, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Crystalline-state photoisomerization of a rhodium dithionite complex with benzyltetramethylcyclopentadienyl ligand, [(Cp
BnRh)
2(μ-CH
2)
2(μ-O
2SSO
2)] (Cp
Bn = η
5-C
5Me
4Bn), is studied by X-ray crystallography and CP/MAS
13C NMR spectroscopy. The disorder of the Cp
Bn ring in the crystal and the crystal packing of the molecules of isomers produced by photoreaction play an important role for stabilization of the whole crystal.
View full abstract
-
Takeshi Kondo, Takashi Kameshima, Takeshi Kawai
2008 Volume 37 Issue 8 Pages
828-829
Published: August 05, 2008
Released on J-STAGE: June 28, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
The surface of diamond powder (DP) was sulfonated via a covalent modification method using 1,3-propanesultone, for the fabrication of a new class of solid acid material. X-ray photoelectron spectroscopy (XPS) and diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy studies confirmed successful introduction of sulfo groups on the DP surface. The optimal condition for the preparation of sulfonated DP (S-DP) was investigated in terms of acid amount on the surface. The S-DP exhibited solid Brønsted acid properties in pure water and catalytic activity toward the formation of ethyl acetate.
View full abstract
-
Masaaki Haneda, Hideaki Hamada
2008 Volume 37 Issue 8 Pages
830-831
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
The catalytic activity of Ir/WO
3/SiO
2 for the selective reduction of NO with CO (CO-SCR) in the presence of excess O
2 was significantly increased by the presence of coexisting H
2O, whereas NO reduction hardly occurred in the absence of H
2O. Coexisting H
2O plays an important role preventing catalyst deactivation caused by oxidation of the catalytically active Ir sites at high temperatures.
View full abstract
-
Katsunori Shibata, Lumi Kuroki, Tuyoshi Fukaminato, Masahiro Irie
2008 Volume 37 Issue 8 Pages
832-833
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
A diarylethene derivative, in which oxazole rings are attached to the ethene moiety at the 5-position, was synthesized, and its photochromic and fluorescent properties were examined. The derivative undergoes photochromism in solution and the open-ring isomer exhibits strong fluorescence. The fluorescence intensity was found to reversibly change along with the photochromism.
View full abstract
-
Rui Tang, Xue-Pin Liao, Bi Shi
2008 Volume 37 Issue 8 Pages
834-835
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Heterogeneous catalyst containing gold nanoparticles (AuNPs) was prepared by direct precipitation of collagen of type I as the stabilization reagent. The composite is fibrous and the AuNPs are found to form patterns of long wires, short wires, and dispersed patterns on collagen. The catalytic reduction of 4-nitrophenol to 4-aminophenol by NaBH
4 in the presence of the composite was satisfactory.
View full abstract
-
Kiichi Kuroda, Yuji Maruyama, Yujiro Hayashi, Teruaki Mukaiyama
2008 Volume 37 Issue 8 Pages
836-837
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
The preparation of alkyl aryl sulfides from alcohols and 2-sulfanylbenzothiazole using phenyl diphenylphosphinite and azide compounds by a new type of oxidation–reduction condensation is described. The chiral secondary and tertiary alcohols are converted into the corresponding chiral sulfides with almost complete inversion of configurations under mild and neutral conditions.
View full abstract
-
Ryohji Ohnishi, Yohei Takahashi, Atsushi Takagaki, Jun Kubota, Kazunar ...
2008 Volume 37 Issue 8 Pages
838-839
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Niobium oxides are shown to exhibit oxygen reduction reaction (ORR) activity with high onset potential (ca. 0.85 V vs. NHE) comparable to that for Pt-based catalysts along with excellent stability under acidic conditions.
View full abstract
-
Takuma Hachisu, Takahiro Yotsumoto, Atsushi Sugiyama, Hironori Iida, T ...
2008 Volume 37 Issue 8 Pages
840-841
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
The process of preparation of FePt nanoparticles was investigated with emphasis on the effect of “growth temperature,” at which the atomic diffusion between Pt-rich and Fe-rich phases leads to the formation of uniform nanoparticles. Consequently, it was demonstrated that by controlling the growth temperature, the shape and crystallinity of FePt nanoparticles can be controlled. On the other hand, the size and composition were almost invariable at 5.6±0.5 nm and Fe
53Pt
47, respectively.
View full abstract
-
Tamio Hayashi, Keigo Sasaki
2008 Volume 37 Issue 8 Pages
842-843
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Platinum salts represented by K
2PtCl
4 were found to catalyze the 1,4-addition of arylboronic acids to β-substituted α,β-unsaturated ketones to give high yields of β-arylated ketones. The reaction is completed in 1 h in the presence of 1 mol % of the catalyst in dioxane/H
2O at 70 °C.
View full abstract
-
Mohammad Mehdi Khodaei, Kiumars Bahrami, Fomeida Shahbazi
2008 Volume 37 Issue 8 Pages
844-845
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
Friedel–Crafts acylation of aromatic compounds was carried out using FeCl
3-based ionic liquid. This liquid serves as an efficient media as well as a Lewis acid catalyst. The significant advantages of this methodology are excellent yields, short reaction times, mild reaction conditions, environmentally friendly method, simple work-up procedure, low cost, and easy preparation and handling of the catalyst.
View full abstract
-
Shinya Hayashi, Yusuke Matsubara, Seunghun Eu, Hironobu Hayashi, Tomok ...
2008 Volume 37 Issue 8 Pages
846-847
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Fused five-membered zinc porphyrin carboxylic acid has been synthesized to improve light-harvesting capability in the visible and near-infrared regions. The fused porphyrin-sensitized TiO
2 cell exhibited the photocurrent generation extending over 800 nm, although the power conversion efficiency was found to be moderate (0.30%).
View full abstract
-
Wei Wang, Genqiang Zhang, Xiaoguang Li
2008 Volume 37 Issue 8 Pages
848-849
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
The high quality CdTe/Te multiple heterostructure nanowire arrays were successfully fabricated by a nano-confined precipitation process. The optical properties of the as-obtained CdTe/Te heterostructure nanowires are systematically investigated, which demonstrate the strong coupling of electronic bands in CdTe/Te heterojunction.
View full abstract
-
Guangtian Zhou, Yi Ma
2008 Volume 37 Issue 8 Pages
850-851
Published: August 05, 2008
Released on J-STAGE: July 05, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Reversible addition–fragmentation transfer (RAFT) polymerization of styrene (St) induced by γ-ray irradiation has been successfully performed in miniemulsion using 2-phenylprop-2-yl phenyldithioacetate (PPPDTA) as chain-transfer agent (CTA). The results show that the polymerization bears all the characteristics of controlled/living free-radical polymerizations, such as the number-average molecular weight (
Mn) increasing linearly with monomer conversion, molecular weight (MW) being controlled and the molecular weight distribution (MWD) being narrow (polydispersity index (PDI) ≤ 1.30). Moreover, this system does not show a significant decrease in polymerization rate as compared to a conventional miniemulsion polymerization.
View full abstract
-
Guang-Yin Fan, Ye Zhang, Ya-Fen Zhou, Rui-Xiang Li, Hua Chen, Xian-Jun ...
2008 Volume 37 Issue 8 Pages
852-853
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Catalyst Ru–B/TiO
2 showed an excellently catalytic performance for the hydrogenation of ethyl lactate to 1,2-propanediol (1,2-PDO) under mild conditions (90 °C and 4.0 MPa H
2) without any additive. Especially, the activity of the catalyst was greatly improved in aqueous solution. The conversion of ethyl lactate was up to 98% and the selectivity to 1,2-propanediol was over 95%.
View full abstract
-
Fumitaka Ishiwari, Shinichi Kawasaki, Yasuhito Koyama, Toshikazu Takat ...
2008 Volume 37 Issue 8 Pages
854-855
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Supplementary material
Synthesis and properties of a new class of styrenic polymer are reported. The radical polymerization of 2-vinyl-9,9′-spirobifluorene yielded high molecular weight poly(vinylspirobifluorene) with high thermal stability and high solubility, which gave a self-standing transparent film with high refractive index.
View full abstract
-
Chunliang Li, Masanori Ando, Norio Murase
2008 Volume 37 Issue 8 Pages
856-857
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Monodisperse InP nanocrystals were prepared by a facile one-pot solvothermal route via the pyrolysis reaction between indium chloride and tris(dimethylamino)phosphine at relatively low temperatures (150–180 °C). The InP nanocrystals after size-selective precipitation had a well-crystallized zinc blende structure, a narrow size distribution, and distinguishable absorption peaks. Application of HF treatment in combination with photoetching increased their emission efficiency to 58% while their emission wavelengths were tunable from green to red.
View full abstract
-
Youn-Gyu Han, Takafumi Kusunose, Tohru Sekino
2008 Volume 37 Issue 8 Pages
858-859
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Polyaniline (PANI)-coated titania (TiO
2) have been prepared with ammonium persulfate (APS) as an oxidant in aqueous sodium dodecyl sulfate (SDS) micellar solution. The addition of a small amount of TiO
2 nanoparticles greatly increased electrical conductivity from 5.89 to 14.2 S/cm. The effect of SDS for TiO
2@PANI composites was studied in terms of morphology of the core–shell structure, dispersibility of TiO
2 in composites, and electrical conductivity.
View full abstract
-
Takahiro Nishimura, Makoto Nagaosa, Tamio Hayashi
2008 Volume 37 Issue 8 Pages
860-861
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Supplementary material
New
C2-symmetric chiral diene ligands bearing a tetrafluorobenzobarrelene framework and (−)-menthyl groups as chiral auxiliaries were prepared through [4 + 2] cycloaddition of 1,4-bis((−)-menthoxymethyl)benzene with tetrafluorobenzyne. The diene ligands realized the rhodium-catalyzed asymmetric addition of arylboronic acids to α,β-unsaturated carbonyl compounds giving β-arylcarbonyl compounds in high yields with high enantioselectivity.
View full abstract
-
Luis M. Palacios-Romero, Heriberto Pfeiffer
2008 Volume 37 Issue 8 Pages
862-863
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Li
2CuO
2 was used for the CO
2 chemisorption process. Li
2CuO
2 was thermally treated under a flux of CO
2, dynamically (from 25 to 1000 °C) and isothermically. The results clearly showed that Li
2CuO
2 is able to chemisorb CO
2 in a wider range of temperatures than those presented by other lithium ceramics. Therefore, this ceramic may become a new option as CO
2 captor.
View full abstract
-
Kazuya Koumoto, Hirofumi Ochiai, Naoki Sugimoto
2008 Volume 37 Issue 8 Pages
864-865
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Supplementary material
By using a DNA duplex, (5′-GTTACTATATGA-3′/5′-TCATATAGTAAC-3′) under molecular crowding conditions, it was revealed that hydration plays a significant role in the stability of the duplex, in contrast to viscosity and dielectric constant which have little effect.
View full abstract
-
Tae Wan Lee, Dae Cheol Kim, Nam Su Kang, Jae Woong Yu, Min Ju Cho, Kyu ...
2008 Volume 37 Issue 8 Pages
866-867
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
A new multibranched crystalline molecule was synthesized through Horner–Emmons reactions using hexyl-substituted thiophene-based carbaldehydes as dendrons and benzene-1,2,4,5-tetramethylphosphonic acid octaethyl ester as the core unit. The molecule was employed to fabricate organic photovoltaic (OPV) cells with methanofullerene [6,6]-phenyl C61-butyric acid methyl ester (PCBM). Poly(3-hexylthiophene) (P3HT) was also used as a dopant to improve the film quality and power conversion efficiency. As a result, the short-circuit current density and open circuit voltage were increased when P3HT was added into 4(HPBT) and PCBM dyad, resulting in a higher power conversion efficiency of around 0.6%.
View full abstract
-
Hitoshi Ogihara, Sakae Takenaka, Ichiro Yamanaka, Eishi Tanabe, Akira ...
2008 Volume 37 Issue 8 Pages
868-869
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Cross-sectional TEM images of carbon nanofibers formed through methane decomposition over Ni/SiO
2 catalysts were observed by using an ultramicrotome. The TEM images indicated that carbon nanofibers have regular hexagonal prism structures.
View full abstract
-
Akihiko Tsuge, Takeshi Hara, Tetsuji Moriguchi, Minoru Yamaji
2008 Volume 37 Issue 8 Pages
870-871
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Supplementary material
Small-sized cyclophanes consisting of oligothiophene units as a component have been prepared. Correlation between the cyclophane structure and fluorescence spectral properties has been examined. It has been found that emission from intramolecular excimer-formation is confirmed for the cyclophanes having two or three thiophene units, but not for those having four or five thiophene units with the β-hexyl chain.
View full abstract
-
Koh-ichi Seki, Kazuya Aizawa, Tatsuyuki Sugaoi, Masayuki Kimura, Kazue ...
2008 Volume 37 Issue 8 Pages
872-873
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
In contrast to photoreactions of 5-fluoro-1,3-dimethyluracil (5-FDMU) with various naphthalenes including 2-methoxynaphthalenes that proceeds in a manner to give ethenoquinazolines through 1,4-cycloaddition, UV-irradiation of a mixture of 5-FDMU and naphthalenes with a methoxy group at C-1 gave rise to the formation of novel cycloadducts, methyl 2-[(1
E)-3-(5-fluoro-1,3-dimethyl-2-oxo-1,3-dihydropyrimidin-4-ylidene)prop-1-enyl]benzoates, derived from the novel aromatic Paterno–Büchi type cycloaddition, followed by a concomitant disruption of the initially formed oxetane moiety.
View full abstract
-
Youngjong Kang
2008 Volume 37 Issue 8 Pages
874-875
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Flexible Au nanoparticle chains were spontaneously aligned into a linear structure at several hundred micrometer scale during evaporation process. 1D alignment was achieved by using Marangoni flow and sequential meniscus recession. Evaporation speed and the incline of substrate strongly affected the resulting structures.
View full abstract
-
Kei Shimoda, Tatsunari Kobayashi, Masaaki Akagi, Hatsuyuki Hamada, Hir ...
2008 Volume 37 Issue 8 Pages
876-877
Published: August 05, 2008
Released on J-STAGE: July 12, 2008
JOURNAL
FREE ACCESS
Supplementary material
Genistein was glucosylated to its 7-
O-β-
D-glucoside by cultured cells of
Ipomoea batatas, while cultured
Marchantia polymorpha cells produced 4′-
O-β-
D-glucoside and 7-
O-β-
D-glucoside of genistein. On the other hand, quercetin was converted into its 3-
O-β-
D-glucoside by
I. batatas, and
M. polymorpha gave 3-
O-β-
D-glucoside and 7-
O-β-
D-glucoside of quercetin. These four glucosides were further glycosylated to the corresponding β-maltosides and β-maltotriosides by cyclodextrin glucanotransferase. Genistein 7-
O-β-maltooligosaccharides, quercetin 3-
O-β-glucoside, and quercetin 7-
O-β-maltooligosaccharides showed potent inhibitory effects on histamine release from rat peritoneal mast cells.
View full abstract
-
Yoichiro Kuninobu, Hirokazu Ueda, Kazuhiko Takai
2008 Volume 37 Issue 8 Pages
878-879
Published: August 05, 2008
Released on J-STAGE: July 19, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Treatment of 2-propynyl alcohols with several nucleophiles in the presence of a catalytic amount of a rhenium complex, [ReBr(CO)
3(thf)]
2, gave coupling products via dehydration. In these reactions, C–C, C–O, and C–S bonds can be constructed under mild conditions.
View full abstract
-
Yu Naito, Ryohei Ishige, Manabu Itoh, Masatoshi Tokita, Junji Watanabe
2008 Volume 37 Issue 8 Pages
880-881
Published: August 05, 2008
Released on J-STAGE: July 19, 2008
JOURNAL
RESTRICTED ACCESS
Twin dimers with 3-methylpentane spacers behave as U-shaped (folding) molecules if the carbon number of alkyl tail group is longer than 12 and form an S
A phase. This behavior is in contrast to that in dimers with linear pentane spacers which assume extended conformation and form the antiferroelectric S
CAb. Folding of twin molecules, hence, is another way to accommodate tail groups fairly longer than the spacers, suggesting new potentiality in spontaneous molecular organization.
View full abstract
-
Hiroki Akutsu, Shinji Yamashita, Jun-ichi Yamada, Shin’ichi Naka ...
2008 Volume 37 Issue 8 Pages
882-883
Published: August 05, 2008
Released on J-STAGE: July 19, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
A novel bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF)-based salt with an aminoxyl radical 2,2,5,5-tetramethyl-3-pyrrolin-1-oxyl (PO) has been prepared. The salt has α-type 2-D conducting sheets and is a semiconductor with ρ
RT=26 Ω·cm and
Ea=0.31 eV. The temperature dependence of the magnetic susceptibility suggests that both the aminoxyl radical and the BEDT-TTF layer have local spin moments at room temperature.
View full abstract
-
Shuoshuo Chen, Zhiyuan Ling, Yi Li, Jinchi Wang
2008 Volume 37 Issue 8 Pages
884-885
Published: August 05, 2008
Released on J-STAGE: July 19, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
A new replication method was developed to produce metal nanohole arrays with highly ordered honeycomb-like structure. In this process, porous anodic alumina was used as template; hot-press and electroless plating techniques were introduced to fabricate polycarbonate nanopillar arrays and Ni metal nanohole arrays, separately. With this method, metal nanohole arrays with precise replication of the porous anodic alumina can be fabricated on a large scale simply and rapidly.
View full abstract
-
Jin Matsumoto, Tsutomu Shiragami, Masahide Yasuda
2008 Volume 37 Issue 8 Pages
886-887
Published: August 05, 2008
Released on J-STAGE: July 19, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
In order to develop water-soluble porphyrins, alkyloxo(methoxo)porphyrinatoantimony bromides (alkyl = decyl, dodecyl, and octadecyl) were prepared. These complexes have more than 200 mg/100 g of solubility in aqueous solution. From the analysis of absorption spectra and surface tension, it was elucidated that the porphyrin complexes are present as aggregates in aqueous solution.
View full abstract
-
Priastuti Wulandari, Takeshi Nagahiro, Kanae Michioka, Kaoru Tamada, K ...
2008 Volume 37 Issue 8 Pages
888-889
Published: August 05, 2008
Released on J-STAGE: July 19, 2008
JOURNAL
RESTRICTED ACCESS
The coordination of carboxylate capping agents on silver and gold nanoparticles is investigated by Fourier transform infrared spectroscopy (FTIR). The shift of carboxylate stretching frequency confirmed that carboxylate bound on gold nanoparticle forms unidentate coordination, while that on silver nanoparticle shows ionic bonding. The different coordinations on gold and silver NPs are reasonably interpreted by molecular orbital (MO) calculation based on metal carboxylate molecules.
View full abstract
-
Makoto Michida, Teruaki Mukaiyama
2008 Volume 37 Issue 8 Pages
890-891
Published: August 05, 2008
Released on J-STAGE: July 19, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
A highly useful method is established for the stereoselective synthesis of (
Z)-α-fluoroacrylates from various aldehydes and fluoro(trimethylsilyl)ketene ethyl trimethylsilyl acetal in the presence of a Lewis base catalyst. The ketene acetal, easily prepared from ethyl fluoroacetate, affords α-fluoroacrylates in high yields with excellent Z stereoselectivities under mild conditions.
View full abstract
-
Yusuke Yamauchi, Tatsuo Kimura
2008 Volume 37 Issue 8 Pages
892-893
Published: August 05, 2008
Released on J-STAGE: July 19, 2008
JOURNAL
RESTRICTED ACCESS
Supplementary material
Ti-containing mesoporous silica microspheres with high Ti content are prepared by a spray-drying method. Ti species are well-dispersed and highly doped in the silicate frameworks without collapse of mesoporous structures.
View full abstract
