All issues
Volume 40, Issue 2
Displaying 1-36 of 36 articles from this issue
- |<
- <
- 1
- >
- >|
Highlight Review
-
Shuhei Higashibayashi, Hidehiro Sakurai2011 Volume 40 Issue 2 Pages 122-128
Published: February 05, 2011
Released on J-STAGE: January 08, 2011
JOURNAL FREE ACCESSSumanene (C21H12) is a C3v symmetric buckybowl, which corresponds to a partial fullerene structure. Recent advances in the syntheses of sumanene and its derivatives, including heterasumanenes, are summarized in this review. Their chemical reactivities and derivatizations are also presented.The C3v symmetric buckybowl, sumanene (C21H12), is named after a flower in Hindi and Sanskrit. Just as its namesake, the chemistry of sumanene has begun to bloom. Recent advances in the syntheses of sumanene, heterasumanenes, and their derivatives are summarized in this review. Fullsize ImageView full abstract
Letter
-
Hiroyasu Tamura, Yoshihiro Shinohara, Tatsuo Arai2011 Volume 40 Issue 2 Pages 129-131
Published: February 05, 2011
Released on J-STAGE: December 28, 2010
JOURNAL RESTRICTED ACCESS
Supplementary materialPhotoresponsive stilbenes with imidazolium cation directly attached to the para-position of the phenyl ring were prepared and their properties were examined. Although the cis isomer was liquid at room temperature and practically gave no fluorescence, the trans isomer was solid and gave fluorescence emission with quantum yield as high as ca. 0.2. Furthermore photoisomerization from pure cis isomer in the liquid state to trans isomer in the solid state was observed.View full abstract -
Qingquan Wei, Tianxin Wei, Xiaoguang Wu2011 Volume 40 Issue 2 Pages 132-133
Published: February 05, 2011
Released on J-STAGE: December 28, 2010
JOURNAL RESTRICTED ACCESS
Supplementary materialAn ultrasensitive and highly selective testosterone detection method by surface plasmon resonance (SPR) combined with molecularly imprinted films (MIFs) was developed. The coupling angle shifts were highly selective to testosterone and showed a linear relationship to the logarithmic concentrations (from 10−15 to 10−10 mol L−1) of the testosterone in the acetonitrile. The selectivity of the thin testosterone-imprinted films was examined by 10−4 mol L−1 progesterone acetonitrile solution, no observable binding was detected.View full abstract -
Osamu Hayashida, Tomomi Nakashima2011 Volume 40 Issue 2 Pages 134-135
Published: February 05, 2011
Released on J-STAGE: December 28, 2010
JOURNAL RESTRICTED ACCESS
Supplementary materialWater-soluble cyclophane dimer was synthesized by Fmoc-chemistry of cyclophane-tethered Fmoc-lysine derivative, as a multivalent host. The host showed enhanced guest binding affinity relative to that by monocyclic cyclophane, as confirmed by fluorescence spectroscopy as well as surface plasmon resonance measurements.View full abstract -
Yoshimune Nonomura, Takehide Ikeda, Masataka Sugimoto, Takashi Taniguc ...2011 Volume 40 Issue 2 Pages 136-137
Published: February 05, 2011
Released on J-STAGE: December 28, 2010
JOURNAL RESTRICTED ACCESS
Supplementary materialMicrobowls, which are hollow particles with holes on their surfaces, stabilize air-in-water-type foams and water-in-air-type powders in particle/air/water ternary systems. We found a particle-dispersed state between the foam state and the powder state. Interestingly, the mixture in this new state displayed remarkable dilatational behavior, preventing the formation of foams and water droplets.View full abstract -
Li Wang, Qing-Ping Gong, Xiao-Jun Liu, Yong-Hong Li, Ping Huang, Bi-Qi ...2011 Volume 40 Issue 2 Pages 138-139
Published: February 05, 2011
Released on J-STAGE: December 28, 2010
JOURNAL RESTRICTED ACCESS
Supplementary materialA convenient organocatalytic process for the chemoselective synthesis of substituted cyclohex-2-enones was developed. The cascade reaction involves a remarkable Michael addition of an acyclic ketone-based enamine onto unmodified enones. The enamine-mediated aldol–Robinson cascade reactions of aromatic and aliphatic aldehydes with acetone produced substituted cyclohex-2-enones in moderate to high yields under mild reaction conditions.View full abstract -
Bingfu Lei, Ken-ichi Machida, Takashi Horikawa, Hiromasa Hanzawa2011 Volume 40 Issue 2 Pages 140-141
Published: February 05, 2011
Released on J-STAGE: December 28, 2010
JOURNAL RESTRICTED ACCESSEu2+ ion-doped oxynitride phosphor, (Sr0.5Ba0.5)Si2O2N2:Eu2+, was prepared by solid-state reaction using metal alloy as precursor. Owing to the relatively high activity of the metal alloy precursor compared with the inert Si3N4, a single phase of solid solution phosphor (Sr0.5Ba0.5)Si2O2N2:Eu2+ was easily obtained at 1400 °C under atmospheric pressure. It showed a broad excitation band originating from the 4f7 → 4f65d transition of Eu2+ ion, extending to 520 nm, and centering at 460 nm and a strong emission band peaking at 565 nm. The high emission and small thermal quenching allow this material to be used for phosphor-converted white LEDs.View full abstract -
Toshiki Sawada, Naoto Shirakawa, Yu Hirai, Mineo Hashizume, Mamoru Aiz ...2011 Volume 40 Issue 2 Pages 142-143
Published: February 05, 2011
Released on J-STAGE: December 28, 2010
JOURNAL RESTRICTED ACCESS
Supplementary materialThe reduction of tetrachloroaurate(III) ions (AuCl4−) with 2-[4-(2-hydroxyethyl)-1-piperazinyl]ethanesulfonic acid (HEPES) was used to detect protein kinase A activity. The phosphorylation of substrate peptides was identified by changes in the solution colors resulting from the aggregation of synthesized gold nanoparticles in HEPES buffer.View full abstract -
Naomi Hashimoto, Naoki Nishida, Haruno Murayama, Hideki Tanaka2011 Volume 40 Issue 2 Pages 144-146
Published: February 05, 2011
Released on J-STAGE: December 28, 2010
JOURNAL RESTRICTED ACCESS
Supplementary materialWe demonstrate that gas-born nanoparticles can be transported into solution successfully. Our results show that Ag nanoparticles produced in gas phase are introduced into poly(vinylpyrrolidone) solution without structural changes such as nanoparticle aggregation. It is also shown that Ag nanoparticles in solution show surface plasmon resonance, suggesting that the optical properties of nanoparticles are not impaired by the transport from gas to liquid.View full abstract -
Isamu Shiina, Keisuke Ono, Kenya Nakata2011 Volume 40 Issue 2 Pages 147-149
Published: February 05, 2011
Released on J-STAGE: January 08, 2011
JOURNAL OPEN ACCESS
Supplementary materialA variety of optically active 1-heteroarylalkanols and their esters, which include heteroaromatic moieties, such as 2-furyl, 2-thienyl, 3-thienyl, 2-thiazoyl, 2-benzothiazoyl, and 2-benzoxazoyl groups, are efficiently produced by a novel asymmetric esterification. The transition states that form the desired (R)-esters from the (R)-1-heteroarylalkanols are determined by DFT calculations, and the structural features of these transition states are systematically discussed.View full abstract -
Atsushi Takagaki, Akihiro Tsuji, Shun Nishimura, Kohki Ebitani2011 Volume 40 Issue 2 Pages 150-152
Published: February 05, 2011
Released on J-STAGE: January 08, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialHydrotalcite-supported gold nanoparticles (Au/HT) were synthesized by deposition–precipitation using NH3 and successive calcination at various temperatures. Gold nanoparticles of less than 5 nm with narrow size distribution were deposited onto hydrotalcite surfaces, which were determined by TEM measurements. Au LIII-edge XANES spectra clearly indicated that calcination at temperatures higher than 373 K leads to the generation of metallic Au which is the catalytically active site for selective glycerol oxidation to glycolic acid in water with molecular oxygen under mild reaction conditions.View full abstract -
Cheng Sun, Dongmei Sheng2011 Volume 40 Issue 2 Pages 153-155
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL RESTRICTED ACCESSMonodisperse hollow polyaniline nanospheres with controlled surface smoothness were synthesized by in situ polymerization of aniline monomers adsorbed on a carboxyl-functionalized polystyrene surface through electrostatic interactions.View full abstract -
Kake Zhu, Weiming Hua, Xingyi Wang2011 Volume 40 Issue 2 Pages 156-158
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL RESTRICTED ACCESSNiO nanosheet with high-energy (111) polar surface was prepared in high yield under mild conditions using nickel acetate tetrahydrate as starting material via thermal decomposition of intermediate Ni(OH)(OCH3). The NiO(111) nanosheet is far more active than conventional NiO for ethylbenzene dehydrogenation.View full abstract -
Surface Modification of Individual Imogolite Nanotubes with Alkyl Phosphate from an Aqueous SolutionWei Ma, Jungeun Kim, Hideyuki Otsuka, Atsushi Takahara2011 Volume 40 Issue 2 Pages 159-161
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialSynthetic imogolite surface was modified with alkyl phosphate by covalent bonding from an aqueous solution, and the individual imogolite tubes with a hydrophobic external surface were directly observed with transmission electron microscopy.View full abstract -
Nobuya Sakai, Norimichi Kawashima, Takurou N. Murakami2011 Volume 40 Issue 2 Pages 162-164
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL OPEN ACCESSIn this study, photoelectrodes composed of a porous layer of 100-nm ZnO particles are fabricated for use in dye-sensitized solar cells. The electrodes are immersed in an aqueous TiCl4 solution to coat them with a thin layer of TiO2 for preparation of ZnO–TiO2 core–shell electrodes. This simple treatment drastically improves the cell performance, resulting in the highest obtained efficiency of 3.91%. This efficiency is higher than that of 100-nm TiO2 particle cells.View full abstract -
Md. Ashaduzzaman, Shuhei Kai, Shinobu Uemura, Masashi Kunitake2011 Volume 40 Issue 2 Pages 165-167
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL RESTRICTED ACCESSThe thermoresponsive dispersion properties of triarm-shaped diblock copolymers of thermoresponsive poly(N-isopropylacrylamide) {poly(NIPAAm)} as a core unit and poly(N-hydroxyethylacrylamide) {poly(HEAAm)} as a hydrophilic outer shell were investigated. The core and the outer shell were synthesized by atom-transfer radical polymerization (ATRP). The block polymer was completely dissolved in water up to 10−6 M with no turbidity even above lower critical solution temperature (LCST). Above the LCST (ca. 33.6 °C) polymer aggregates, in which the NIPAAm moiety was shrunk and formed a hydrophobic core, were monitored by dynamic light scattering measurements, while no signal was observed below the LCST. The size of globular aggregates with diameter in the range 35 to 170 nm was kinetically controlled by incubation in the transition-temperature region near the LCST. The size was stable above that temperature region.View full abstract
Editor's Choice
-
Yasushi Idemoto, Yuta Tsukada, Naoto Kitamura, Akinori Hoshikawa, Toru ...2011 Volume 40 Issue 2 Pages 168-170
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL OPEN ACCESSIn the present study, we performed a new ex situ analysis of the change in the crystal structure of a cathode containing the composite material in a coin cell during the charge–discharge cycle. Time-of-flight neutron powder diffraction with Rietveld refinement was used to analyze the crystal structure of LiNi0.8Co0.19Cu0.01O2 produced by solid-phase synthesis, both for the powder and a cathode before and after charging. The powder and the cathode had similar crystal structure parameters before charging. The results obtained demonstrate that crystal structure analysis by neutron diffraction is possible for a cathode containing 8.5 mg of active material. The results also showed that it is possible to quantitatively determine the Li composition, Li/Ni cation mixing amount, (Ni,Co,Cu)–O6 octahedral distortion, and small quantities of the second phase component in the cathode before and after charging.View full abstract
Letter
-
Taeko Kakizawa, Yasuro Kawano, Kohsuke Naganeyama, Mamoru Shimoi2011 Volume 40 Issue 2 Pages 171-173
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialDehydrocoupling reactions of amine–borane adducts catalyzed by half-sandwich carbonyl complexes are described. Secondary amine–borane adducts released H2 with catalytic action of [CpMn(CO)3] (Cp: η5-C5H5), [(η6-C6H6)Cr(CO)3], and [CpV(CO)4] under photoirradiation to produce dimeric or monomeric aminoboranes. These results were parallel to the [M(CO)6]-catalyzed system (M = Cr, Mo, and W); however, the reactions were considerably slower. Dehydrocoupling of BH3·NH2Me afforded an aminoborane polymer, [BH2NHMe]n.View full abstract
Editor's Choice
-
Aiko Fukazawa, Manabu Kiguchi, Satoshi Tange, Yasunori Ichihashi, Qian ...2011 Volume 40 Issue 2 Pages 174-176
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL OPEN ACCESS
Supplementary materialPhenylene and biphenyl compounds with dibenzophosphole sulfide (DBPS) as an anchoring group for single molecule junctions were synthesized. The conductance measurements revealed that the phosphine sulfide indeed acts as an anchoring group for Au electrodes. Theoretical calculations including metal electrodes demonstrated that the LUMO level of the DBPS-terminated biphenyl is close to the Au Fermi level, leading to the electron conduction of the Au–molecule–Au junction based on the resonance-tunneling mechanism.View full abstract -
Keishiro Tahara, Yi Chen, Ling Pan, Takahiro Masuko, Hisashi Shimakosh ...2011 Volume 40 Issue 2 Pages 177-179
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL OPEN ACCESS
Supplementary materialAn electrochemical carbon-skeleton rearrangement of methylmalonate skeleton to succinate was successfully mediated by an imine/oxime-type cobalt complex using diethyl 2-bromomethyl-2-phenylmalonate as a model substrate of a coenzyme B12-dependent enzymatic reaction. Cyclic voltammetric and mass spectrometric studies revealed that this electrocatalysis of the alkyl bromide with 1,2-migration of a carboxylic ester group was achieved by the duet redox process between the reduction of the monoalkylated complex and the oxidation of the dialkylated complex.View full abstract
Letter
-
Zen Maeno, Takayuki Kibata, Takato Mitsudome, Tomoo Mizugaki, Koichiro ...2011 Volume 40 Issue 2 Pages 180-181
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialDendrimer-encapsulated subnano Pd clusters catalyze selective hydrogenation of 1,3-cyclooctadiene to cyclooctene. The catalytic activity increases with the size of the subnano Pd clusters. The activity of the threefold hollow sites of the subnano Pd clusters plays an important role in the hydrogenation reaction.View full abstract -
Yoshihiro Sasaki, Tai Hirakura, Shin-ichi Sawada, Kazunari Akiyoshi2011 Volume 40 Issue 2 Pages 182-183
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialMetal coordinative-crosslinked nanogels were prepared by introducing a metal–ligand to a hydrophilic polysaccharide. The redox couple of Co(II) and Co(III) was utilized for construction of a redox-sensitive nanogel system. This is a new method for the preparation of hybrid nanogels with dual network structures of both physically and coordinative-crosslinking points.View full abstract
Editor's Choice
-
Kenichi Oyaizu, Takashi Sukegawa, Hiroyuki Nishide2011 Volume 40 Issue 2 Pages 184-185
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL OPEN ACCESSAn electrode-attached layer of poly(phenylacetylene) bearing a pendant nitronyl nitroxide group per repeating unit, obtained by the Rh-catalyzed polymerization of 2-(4-ethynylphenyl)-4,4,5,5-tetramethylimidazoline-l-oxyl 3-oxide, underwent oxidation and reduction at 0.80 and −0.84 V vs. Ag/AgCl, respectively. The magnetically determined unpaired electron density of 92% was coulometrically reproduced, which supported the presumption that the radical survived during the course of the polymerization to allow both positive and negative charging of the pristine neutral polymer substantially per repeating unit. Galvanostatic Coulomb titration revealed the charge storage capability of the polymer, which demonstrated usefulness as organic electrode-active material with unprecedented ambipolar chargeability.View full abstract
Letter
-
Seizo Sato, Fumie Iwata, Jiro Takeo, Hiroyuki Kawahara, Makoto Kuramot ...2011 Volume 40 Issue 2 Pages 186-187
Published: February 05, 2011
Released on J-STAGE: January 15, 2011
JOURNAL RESTRICTED ACCESSA new cytotoxic imidazole alkaloid, stellettazole D, containing norsesquiterpene and aminopropylimidazolium units, has been isolated from the marine sponge Jaspis duoaster. The structure of stellettazole D was assigned on the basis of NMR, mass spectrometry, and IR spectral data. Stellettazole D has moderate cytotoxicity against a limited number of tumor cells.View full abstract -
Srung Smanmoo, Weerachai Nasomphan, Pramuan Tangboriboonrat2011 Volume 40 Issue 2 Pages 188-190
Published: February 05, 2011
Released on J-STAGE: January 22, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialIsothiocyanatoluminol (ITL) was successfully synthesized from the reaction between luminol and thiophosgene in the presence of triethylamine. The optimized conditions were extended for the preparation of isothiocyanatoisoluminol (ITIL) and phenyl isothiocyanate (PI). The chemiluminescence (CL) of ITL was comparable to luminol. ITL was used as a CL labeling reagent for amino acid and bovine serum albumin (BSA) in which the –NH2 terminus of amino acid residue present in BSA acts as the labeling site.View full abstract -
Hideki Kido, Kazutaka Fujita, Koichi Osaki, Tatsunari Sakurai, Akihisa ...2011 Volume 40 Issue 2 Pages 191-193
Published: February 05, 2011
Released on J-STAGE: January 22, 2011
JOURNAL RESTRICTED ACCESSSpiral patterns that have concave and convex surfaces were discovered on a bulk metallic glass (BMG), Zr55Cu30Al10Ni5 atom % alloy after electropolishing under certain conditions. The observed spiral pattern had a wavelength of 2.4 µm and peaks that were 0.19 µm high. Electropolishing produces smooth metal and alloy surfaces. These patterns depend on the spatiotemporal properties during electropolishing.View full abstract -
Masashi Ohmae, Kazuhiro Kurosaki, Akira Makino, Shiro Kobayashi2011 Volume 40 Issue 2 Pages 194-195
Published: February 05, 2011
Released on J-STAGE: January 22, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialA chitin derivative with an alternating N-phthaloyl group was prepared via chitinase-catalyzed polymerization. A chitobiose oxazoline derivative with a N-phthaloyl group at the C2′ position was designed as a transition-state-analog substrate monomer for chitinase belonging to the glycoside hydrolase family 18. The monomer was successfully polymerized by the enzyme catalysis, providing the corresponding chitin derivative. This implies that the recognition at the C2 position of the substrate by the family 18 chitinase in the −2 and +1 subsites is quite loose.View full abstract -
Eiko Mieda, Takahiro Sasamori, Shohei Sase, Kei Goto, Norihiro Tokitoh2011 Volume 40 Issue 2 Pages 196-197
Published: February 05, 2011
Released on J-STAGE: January 22, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialWe report here the attempted synthesis of a stable 1-fluoro-2-hydrosilene bearing a Bpq group, which is a bulky aryl group bearing a cavity-shaped framework. We have successfully synthesized an overcrowded benzyldifluorosilane as a precursor. Treatment of the benzyldifluorosilane with 2 equiv of t-BuOK in THF afforded the corresponding benzyl anion, the structure of which showed a unique feature as a fluorosilene–KF complex.View full abstract
Editor's Choice
-
Harunobu Komatsu, Masato Ikeda, Itaru Hamachi2011 Volume 40 Issue 2 Pages 198-200
Published: February 05, 2011
Released on J-STAGE: January 22, 2011
JOURNAL OPEN ACCESS
Supplementary materialSupramolecular hydrogel, comprising a three-dimensional network of self-assembled nanofibers, has recently emerged as a unique material for a variety of potential applications such as tissue engineering. One serious drawback of supramolecular hydrogels that sometimes limits their practical usage is their mechanical weakness compared with conventional polymer gels. Here we describe a stiff supramolecular hydrogel made of a zwitterionic amino acid-tethered amphiphilic molecule that self-assembles into nanofibers through multiple and orthogonal noncovalent interactions.View full abstract
Letter
-
Yu Guo, Lu Zhou, Wen Zhao, Jian Chen, Makoto Sakurai, Hideo Kameyama2011 Volume 40 Issue 2 Pages 201-203
Published: February 05, 2011
Released on J-STAGE: January 26, 2011
JOURNAL RESTRICTED ACCESSA plate-type anodic-alumina-supported 17.9 wt % Ni catalyst quickly deactivated in daily start-up and shut-down (DSS) steam reforming of methane at 700 °C. When 0.05 wt % Ru or Pt was doped, the catalyst exhibited self-activation, self-regeneration, and self-redispersion. The Pt–Ni catalyst showed better stability than Ru–Ni. A wave-shape Pt–Ni catalyst was prepared, while 3000 h continual and 500-time DSS stability was achieved. Nevertheless, for industrial application, some effort should be made to suppress the catalyst sintering.View full abstract
Editor's Choice
-
Tomoya Hirose, Yutaka Ie, Yoshio Aso2011 Volume 40 Issue 2 Pages 204-205
Published: February 05, 2011
Released on J-STAGE: January 26, 2011
JOURNAL OPEN ACCESS
Supplementary materialSynthesis of new tripodal-anchor units composed of a tetraphenylmethane core with pyridine or amine as anchoring functional groups has been successfully accomplished. Cyclic voltammetry measurements of their monolayers on metal electrodes revealed the estimated surface coverage and robust adsorption of three-armed structures on the surface.View full abstract
Letter
-
Kohtaro Kirimura, Satomi Yanaso, Sachiyo Kosaka, Keiko Koyama, Takasum ...2011 Volume 40 Issue 2 Pages 206-208
Published: February 05, 2011
Released on J-STAGE: January 26, 2011
JOURNAL RESTRICTED ACCESSA reversible salicylic acid decarboxylase (Sdc), found in the yeast Trichosporon moniliiforme WU-0401, is applicable for the production of p-aminosalicylic acid (PAS) from m-aminophenol (m-AP). For the high-yield production of PAS, used as an antituberculous agent, we developed F195Y, a genetically engineered Sdc mutant. We succeeded in selectively producing PAS from m-AP through an enzymatic Kolbe–Schmitt reaction in aqueous solution by using recombinant Escherichia coli cells expressing the gene encoding F195Y. We found that 70 mM PAS was produced at 30 °C in 15 h with a conversion yield of 70% (mol/mol).View full abstract -
Atsushi Okada, Satoshi Kikuchi, Tohru Yamada2011 Volume 40 Issue 2 Pages 209-211
Published: February 05, 2011
Released on J-STAGE: January 26, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialThe alternating copolymerization of propylene oxide/alkylene oxide and carbon dioxide has been developed with randomly incorporated poly(propylene carbonate) and poly(alkylene carbonate) units. The ratio-controlled incorporation of the poly(alkylene carbonate) units could improve the thermal properties, such as the glass-transition temperature and thermal degradation temperature, of the obtained polycarbonates.View full abstract -
Norihisa Fukaya, Shun-ya Onozawa, Masae Ueda, Takayuki Miyaji, Yukio T ...2011 Volume 40 Issue 2 Pages 212-214
Published: February 05, 2011
Released on J-STAGE: January 26, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialThe tripodal linker unit with one bromopropyl group and three anchoring silicon atoms was used to immobilize a chiral phosphine–rhodium complex catalyst on an ordered mesoporous silica support. The rhodium and phosphorus leaching levels into the reaction solution after asymmetric hydrogenation were lower for this catalyst than for immobilized catalysts prepared using conventional triethoxysilane.View full abstract -
Kazuyuki Maeda, Haruna Hatasawa, Kanako Kawawa, Naoko Nagayoshi, Yuta ...2011 Volume 40 Issue 2 Pages 215-217
Published: February 05, 2011
Released on J-STAGE: January 26, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialZinc 1,3,5-benzenetriphosphonates (ZBP) prepared in the presence of organic cations contain unique layers composed of inorganic 1D chains bridged with benzene rings. ZBP showed intercalation and cation-exchange properties while retaining the layer structure, resembling layered metal phosphates rather than conventional layered phosphonates.View full abstract -
Masaru Mukai, Masaru Aoyagi, Hiroyuki Minamikawa, Masumi Asakawa, Tosh ...2011 Volume 40 Issue 2 Pages 218-220
Published: February 05, 2011
Released on J-STAGE: February 05, 2011
JOURNAL RESTRICTED ACCESS
Supplementary materialA novel metal-complexed organic nanotube (M–ONT) having an inner diameter below 10 nm was readily prepared from simple N-acyl-L-phenylalanine and nickel(II) ion.View full abstract
- |<
- <
- 1
- >
- >|