-
Takefumi Hamamatsu, Naohide Matsumoto, Nazzareno Re, Jerzy Mrozinski
2009 Volume 38 Issue 8 Pages
762-763
Published: August 05, 2009
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A chiral one-dimensional copper(II)–gadolinium(III) complex [Cu
IIL
dpen(1S2S)Gd
III(thd)
2]
n (H
3L
dpen(1S2S) = (1
S,2
S)-1,2-diphenyl-1-(2-hydroxybenzamido)-2-(2-hydroxy-3-methoxybenzylideneamino)ethane, Hthd = 2,2,6,6-tetramethyl-3,5-heptanedione) was synthesized, where Cu
II and Gd
III ions are alternately arrayed to form a ferromagnetic chain.
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Jaykrushna Das, Gayatri Rane, Deepa Khushalani
2009 Volume 38 Issue 8 Pages
764-765
Published: August 05, 2009
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Supplementary material
A novel nongrafting route has been developed to anchor Au nanoparticles (NPs) onto titanium oxide rods. These rods have been synthesized through a process involving a glycolate precursor. A facile solid-state transformation allows anatase and rutile phases to be formed
without the overall rod-like morphology being altered. Importantly, the sizes of the rods can be controlled through varying reflux time and temperature only, and hence the procedure does not necessitate the use of additives. These rods have then been used as supports to deposit Au NPs through a simple method that relies on hydrophobic interactions.
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Noriko Umezawa, Moe Tsurunari, Toshihiro Kondo
2009 Volume 38 Issue 8 Pages
766-767
Published: August 05, 2009
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Self-assembled monolayers (SAM) of mercaptohydroquinone (MHQ) were constructed on a Au(111) surface. Redox charge due to hydroquinone/benzoquinone reaction of the MHQ SAM modified Au(111) electrodes was dependent on the concentration of atrazine contained in an electrolyte solution, indicating that the MHQ SAM modified Au(111) electrode functioned as an atrazine sensor.
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Madhuri Mandal, Kalyan Mandal
2009 Volume 38 Issue 8 Pages
768-769
Published: August 05, 2009
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Snowball-like nanoflowers of Ni have been synthesized directed by negatively-charged micelles. Positively-charged or neutral micelles can not evolve such structure. Initially, negatively-charged micelles incorporate the positively-charged Ni-ion onto its head group by electrostatic attraction and again further attraction of surfactant on the Ni
+2 form a layer by layer structure and in a repetitive fashion the surfactant and positively-charged Ni salts form flower-like structure. By the reduction of Ni salts the Ni nanoflowers are formed. The sizes of nanoflowers are ca. 30 nm. The particles are superparamagnetic.
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Azusa Kikuchi, Mikio Yagi
2009 Volume 38 Issue 8 Pages
770-771
Published: August 05, 2009
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Fluorescence, phosphorescence, and electron paramagnetic resonance spectra have been observed for the excited states of a new UV absorber, 2-methylphenyl 2-naphthoate (2-MPN), in ethanol at 77 K. The observed phosphorescence spectrum, phosphorescence lifetime, and zero-field splitting parameters of the lowest excited triplet (T
1) state of 2-MPN revealed that the T
1 state of 2-MPN can be regarded as a locally excited triplet state within naphthalene.
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Hiroshi Takeda, Takayuki Ishida, Yoshiji Takemoto
2009 Volume 38 Issue 8 Pages
772-773
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Treatment of 1-(2-alkynyl)phenyl-3-aryl-2-methylisothioureas with 5 mol % [Pd(η
3-C
3H
5)Cl]
2 in the presence of CuTC (copper thiophenecarboxylate) and Cs
2CO
3 at 130 °C provided a wide range of 6-N-alkylated indolo[2,3-
b]quinolines in good yields.
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Qianru Chen, Lu Han, Shunai Che
2009 Volume 38 Issue 8 Pages
774-775
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MMSSs with radially oriented porous structure were successfully synthesized by using cationic gemini surfactant as template and carboxyethylsilanetriol sodium salt (CES) as costructure-directing agent (CSDA). Particle size can be controlled by adding different cosolvent such as isopropanol, methanol, ethanol, or dimethyl sulfoxide.
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Akito Nakagawa, Teruyuki Komatsu, Stephen Curry, Eishun Tsuchida
2009 Volume 38 Issue 8 Pages
776-777
Published: August 05, 2009
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Supplementary material
The O
2 binding properties of complexes of iron(II) protoporphyrin IX with quadruple mutants of recombinant human serum albumin (rHSA) that provide axial His-186 coordination have been characterized; their O
2 binding parameters were similar to those of analogues having proximal His-185 and of human red blood cells.
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Yoshiro Imura, Keisuke Matsue, Hiroki Sugimoto, Reizo Ito, Takeshi Kon ...
2009 Volume 38 Issue 8 Pages
778-779
Published: August 05, 2009
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Supplementary material
An amphiphilic compound of long-chain amide derivative bearing hydroxy groups as the terminal groups possessed an ambidextrous gel property, i.e., it made gels in both organic solvents and in aqueous solutions. Further, sol–gel transition of the hydrogel was able to be controlled reversibly by pH. Small-angle X-ray scattering and FT-IR measurements showed that the main interaction of the aggregate formation was hydrogen bonding between the amide groups and that the aggregates had lamellar structures in both the organogel and the hydrogel.
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Shunsuke Tanaka, Norihito Nakatani, Yoshikazu Miyake
2009 Volume 38 Issue 8 Pages
780-781
Published: August 05, 2009
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Highly ordered cubic mesoporous aluminosilicates were synthesized using PEO
106PPO
70PEO
106 triblock copolymer and aluminosilicate sols containing Si–O–Al bonds, which are obtained by dissolving Na-A type zeolite in HCl, under mild acidic conditions (pH 1.9–3.2).
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Yaser Abu-Lebdeh, Emily Austin, Isobel J. Davidson
2009 Volume 38 Issue 8 Pages
782-783
Published: August 05, 2009
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Organic salts based on the bicyclic (spiro) ammonium cation were synthesized with a systematic variation in the size of the rings. The salts show high melting points and plastic crystal phases. The SP-56 salt showed the lowest melting point, highest ionic conductivity, and a reduction potential more positive than that of the Li/Li
+ couple; therefore, it was mixed with EC before being employed in a Li/LiFePO
4 battery. The battery maintained capacities between 100 and 113 mA h g
−1 over 100 cycles.
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Pinwen Zhu, Youliang Hong, Bingbing Liu, Guangtian Zou
2009 Volume 38 Issue 8 Pages
784-785
Published: August 05, 2009
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Titanium carbide (TiC)–carbon composite nanofibers with average diameter 90 nm have been successfully produced by electrospinning the precursors, titanium isopropoxide (Ti(O
i-Pr)
4) in polyacrylonitrile (PAN) solution, and then pyrolysis of the resulting nanofibers. TiC formed by the reaction of Ti precursors with carbon during carbonizing and distributed homogeneously in the produced composite nanofibers may be useful to enhance the mechanical properties expand applicability.
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Shunsuke Yoshida, Kosuke Fukui, Satoshi Kikuchi, Tohru Yamada
2009 Volume 38 Issue 8 Pages
786-787
Published: August 05, 2009
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Supplementary material
The silver-catalyzed carbon dioxide incorporation reaction into various propargylic amines proceeded under mild reaction conditions to obtain the corresponding oxazolidinone derivatives in high to excellent yields. The geometry of the C–C double bond in product was confirmed to be the Z isomer by X-ray analysis.
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Masafumi Nose, Taro Kinumoto, Hyun-Suk Choo, Kohei Miyazaki, Takeshi A ...
2009 Volume 38 Issue 8 Pages
788-789
Published: August 05, 2009
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We focused on lactone formation during the electrochemical oxidation of highly oriented pyrolytic graphite (HOPG) as a model carbonaceous material for use in polymer electrolyte fuel cells in the potential range between 0.6 and 1.0 V against a normal hydrogen electrode. Lactone groups could be identified on the oxidized HOPG surface after holding at 1.0 V. Therefore, lactone groups are formed from the reaction between carbonyl groups and carboxylic groups as an intermediate in the electrochemical carbon oxidation reaction to CO
2 evolution.
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Hisahiro Hagiwara, Masayoshi Sekifuji, Norio Tsubokawa, Takashi Hoshi, ...
2009 Volume 38 Issue 8 Pages
790-791
Published: August 05, 2009
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The Henry reaction was catalyzed by 0.01 equiv of aminopropylated nanosilica particles (nano-NAP) in refluxing nitroalkanes to provide nitrostyrenes in good yields. The catalyst could be recycled up to three times in 76% average yield.
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Kiwamu Sue, Hayato Hattori, Toshiyuki Sato, Tomoe Komoriya, Akiko Kawa ...
2009 Volume 38 Issue 8 Pages
792-793
Published: August 05, 2009
Released on J-STAGE: July 04, 2009
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Highly crystalline and water-soluble magnetite nanoparticles having an average diameter of 6.5 nm were synthesized from aqueous FeCl
3 + KOH solution by a flow-through hydrothermal method with a microreactor at 673 K and 30 MPa during residence time of 2×10
−3 s.
L-Ascorbic acid was used as a modifier and a reductant.
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Tomoyuki Yano, Torahiko Yamaguchi, Yohsuke Yamamoto
2009 Volume 38 Issue 8 Pages
794-795
Published: August 05, 2009
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Pentacoordinate hypervalent boron compounds
4a and
4b with a newly prepared 1,8-dimethoxy-10-methylacridinyl ligand were synthesized. X-ray crystallography revealed that the distances between the central boron and both oxygen atoms of the tridentate ligand were in the range of 2.37–2.53 Å, showing the pentacoordinate structure. Cyclic voltammetry of
4b showed that the potential of the reduction (
E1⁄2=−0.57 V in CH
2Cl
2, vs. SCE) is much lower than that of the corresponding Gabbaï’s system
5 (−0.28 V), probably due to the difference in coplanarity between the boryl group and the acridinyl skeleton in
4b and
5 (twist angle = 44.8° in
5 and 88.2° in
4b).
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Shin-ichi Sasaki, Yuki Kotegawa, Kimiko Azuma, Michio Kunieda, Hitoshi ...
2009 Volume 38 Issue 8 Pages
796-797
Published: August 05, 2009
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Supplementary material
3-Trifluoroacetylchlorin possessing an ω-aminoalkyl chain at the 17-propionate residue was prepared to realize a chlorophyll-based supramolecule acting as a thermochromic switch. A THF solution of the synthetic sensor molecule appeared brown, while the solution color became purple at lower temperature due to the conversion of the trifluoroacetyl group to its α-amino alcohol adduct form in a molecule.
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Tipparat Lertwattanaseri, Naoya Ichikawa, Tetuo Mizoguchi, Yasuyuki Ta ...
2009 Volume 38 Issue 8 Pages
798-799
Published: August 05, 2009
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A bionanocomposite of epoxidized natural rubber (ENR) with nanofibrous chitosan is proposed. The bionanocomposite is formed under the reaction between epoxy groups of ENR and amino and hydroxy groups of chitosan as confirmed by qualitative and quantitative FTIR techniques. The nanofibrous chitosan induces stiffness at nanoscale as observed by AFM and tensile strength at microscale to the ENR–chitosan nanocomposite system. The nanocomposite also shows the copper ion absorptivity as investigated by SEM metal ion mapping mode.
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Masaomi Kimura, Tsukasa Hatano, Takuma Yasuda, Jun Morita, Yusuke Akam ...
2009 Volume 38 Issue 8 Pages
800-801
Published: August 05, 2009
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Supplementary material
Trithienylphosphine oxides tethering three π-conjugated oligothiophene arms self-assemble into columnar liquid-crystalline structures that show high photoluminescent properties at ambient temperature.
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Chan Yoon Jung, Ha Young Kim, Tae Sun Chang, Sang Man Koo
2009 Volume 38 Issue 8 Pages
802-803
Published: August 05, 2009
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Supplementary material
A simple one-pot synthesis of thermosensitive spherical organosilicate hybrid particles is described. These organosilicate hybrid particles exhibit solid–liquid transition behaviors whose temperature can be changed by the modification of interdigitated arrays of long alkyl chains.
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Ryoji Kurita, Kohei Nakamoto, Dai Kato, Osamu Niwa
2009 Volume 38 Issue 8 Pages
804-805
Published: August 05, 2009
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Supplementary material
We applied trimethylammonioethanethiol as an electrogenerated chemiluminescence coreactant for obtaining bright emission in a low concentration region. This is because trimethylammoniomethanethiol has the bifunctional properties of luminescence acceleration and surface accumulation on a gold electrode surface.
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Leiming Lang, Baojun Li, Wei Liu, Xun Li, Zheng Xu
2009 Volume 38 Issue 8 Pages
806-807
Published: August 05, 2009
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Supplementary material
Uniform core–shell-structured γ-Fe
2O
3–mesoporous silica spheres (F-MSS) catalyst was prepared by hydrolyzing TEOS in the presence of CTAB. The structure, shape, formation mechanism, and catalytic performance of F-MSS catalyst were investigated. The results showed that F-MSS catalyst had high BET surface area, excellent catalytic activity and selectivity for oxidizing benzyl alcohol to benzaldehyde. The F-MSS catalyst can be reused three times at least and has potential application in industry in the place of noble metal.
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Nobuo Iyi, Fengxia Geng, Takayoshi Sasaki
2009 Volume 38 Issue 8 Pages
808-809
Published: August 05, 2009
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Supplementary material
Anion exchange of NO
3−LDH with Br
− of KBr, which leads to the formation of Br
−LDH and NO
3−-doped KBr, was found to occur during the preparation of KBr pellets for FTIR measurement, and the obtained spectra were composed of characteristic features of NO
3− bands in NO
3−LDH and in NO
3−-doped KBr mixed in variable proportions depending on pellet preparation conditions.
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Keisuke Tomono, Yoshihide Tsunobuchi, Koji Nakabayashi, Wataru Kosaka, ...
2009 Volume 38 Issue 8 Pages
810-811
Published: August 05, 2009
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Supplementary material
Herein we prepared a three-dimensional nickel heptacyanomolybdate-based magnet, K
0.6Ni
II1.7[Mo
III(CN)
7]·5.5H
2O·0.5CH
3OH. This compound exhibited magnetic ordering with a Curie temperature of 28 K due to ferromagnetic coupling between magnetic spins on Ni
II (
S=1) and Mo
III (
S=1⁄2).
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Youichi Tsuchiya, Shuichi Haraguchi, Kouta Sugikawa, Tomohiro Shiraki, ...
2009 Volume 38 Issue 8 Pages
812-813
Published: August 05, 2009
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Supplementary material
The composite of terpyridine-modified polysaccharide (TPySPG) and single-walled carbon nanotube (SWNT) afforded sheet-like morphologies in the presence of ferric ion. On the basis of TEM images, it was proposed that the sheet-like morphologies are created by the metal–ligand interaction cross-linking TPySPG/SWNT components.
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Kazufumi Inada, Katsuhiko Nishiyama, Isao Taniguchi
2009 Volume 38 Issue 8 Pages
814-815
Published: August 05, 2009
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Selective determination of uric acid (UA) was conducted in the presence of ascorbic acid (AA) and acetaminophen (APAP) as interference species at an unmodified glassy carbon paste electrode (GCPE). Using the GCPE prepared in our lab, we succeeded in detecting UA in the presence of AA in acidic and alkaline media. In addition, the oxidation peak potential of APAP is very close to that of UA in neutral media, but in alkaline media, a peak separation of ca. 140 mV was obtained between UA and APAP on the differential pulse voltammogram (DPV).
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Miaofeng Huang, Xin Ju, Chaoyan Wang, Yongjian Tang, Xiaoping Jiang
2009 Volume 38 Issue 8 Pages
816-817
Published: August 05, 2009
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Supplementary material
Hollow resorcinol–formaldehyde (RF) aerogel spheres were synthesized by interfacial polymerization of resorcinol and formaldehyde monomers with NaOH as a catalyst. Commercial hollow polystyrene spheres were used as catalyst storage materials and templates in the synthesis. Hollow carbon aerogel spheres were prepared by carbonization of the RF aerogel spheres at a high temperature under a nitrogen atmosphere. The processing procedures and the conditions of the structures of hollow carbon spheres were studied.
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Jun-chao Zheng, Xin-hai Li, Zhi-xing Wang, Ling-jun Li, Jin-hui Li, Li ...
2009 Volume 38 Issue 8 Pages
818-819
Published: August 05, 2009
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Li
3V
2(PO
4)
3/C composite material with a porous structure and nano-carbon webs are synthesized through a chemical reduction–lithiation and liquid nitrogen quenching method. Li
3V
2(PO
4)
3/C sample was characterized by XRD, SEM, and TEM. X-ray diffraction results show Li
3V
2(PO
4)
3 is monoclinic with a space group of
P2
1⁄
n. SEM and TEM images indicate that the Li
3V
2(PO
4)
3 particles are about 200 nm in diameter, have porous structure, and are coated with nano-carbon webs. Electrochemical measurement results indicate that the Li
3V
2(PO
4)
3/C cathode exhibits high-rate characteristic and delivered a stable discharge capacity of 131.57 mA h g
−1 at 0.1 C (14 mA g
−1), in the range of 2.6–4.5 V.
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Tomoya Inoue, Kenichiro Ohtaki, Yoshikuni Kikutani, Koichi Sato, Masat ...
2009 Volume 38 Issue 8 Pages
820-821
Published: August 05, 2009
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5 wt % hydrogen peroxide was achieved by direct synthesis from hydrogen and oxygen at room temperature and 1.0 MPa, in a glass-fabricated microreactor designated for gas–liquid–solid reaction with ideal gas–liquid distribution to the catalyst packed bed.
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Masatsugu Morimitsu, Naoyuki Oshiumi
2009 Volume 38 Issue 8 Pages
822-823
Published: August 05, 2009
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This paper reports novel catalytic properties of amorphous IrO
2–Ta
2O
5 coatings prepared by thermal decomposition for industrial electrolysis applications, especially zinc electrowinning. The coating formed on a titanium substrate can accelerate oxygen evolution in H
2SO
4 solutions and suppress the anodic deposition of MnOOH. The results are valuable to reduce the anode potential and prevent the deactivation of the anode surface by MnOOH deposition in zinc electrowinning.
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Yong Men, Gunther Kolb, Ralf Zapf, Martin O’Connell, Volker Hess ...
2009 Volume 38 Issue 8 Pages
824-825
Published: August 05, 2009
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Selective methanation of CO in a H
2-rich stream performed over different supported-nickel catalysts showed that Ni–CeO
2 and Ni–Cr
2O
3 were the most effective catalysts for complete removal of CO through selective methanation to decrease a concentration of CO from 1.6 vol % to ppm level (<50 ppm) in a microchannel reactor, and among them a nickel catalyst promoted by Cr
2O
3 proved to be robust for over 180 h without any degradation in performance of selective CO methanation.
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Md. Abdulla-Al-Mamun, Yoshihumi Kusumoto
2009 Volume 38 Issue 8 Pages
826-827
Published: August 05, 2009
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Cu–TiO
2 nanocomposites with different Cu/TiO
2 molar ratios were synthesized by a new simple chemical reduction method. The morphological structure and the surface species of Cu–TiO
2 nanocomposites were determined by using UV–vis absorption spectroscopy, TEM, XPS, XRD, and EDX techniques. The photocatalytic cytotoxicity of Cu–TiO
2 nanocomposites was investigated under UV–vis light irradiation. The cytotoxicity depends on the molar ratio of Cu to TiO
2, ranging from 0.2 to 5.
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Shuhei Yamada, Zhifeng Wang, Kohji Yoshinaga
2009 Volume 38 Issue 8 Pages
828-829
Published: August 05, 2009
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Tiatanium dioxide (TiO
2) nanoparticles, of around 20 nm in diameter, were synthesized within the hydrophilic core of micelles, formed using poly(acrylic acid-
block-methyl methacrylate) in toluene solution, via sol–gel process using titanium isopropoxide. Hybrid films of poly(methyl methacrylate) (PMMA) containing TiO
2 nanoparticles exhibit high transparency in the visible light region even at 30 wt % TiO
2. The refractive index of the hybrid films at 633 nm linearly increased with TiO
2 to attain 1.579.
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Yoichi Kobayashi, Takeshi Udagawa, Naoto Tamai
2009 Volume 38 Issue 8 Pages
830-831
Published: August 05, 2009
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Carrier multiplication (CM) was observed in CdTe quantum dots (QDs) capped with tetradecylphosphonic acid (TDPA) at
hν⁄
Eg>2.5 by picosecond single-photon timing spectroscopy, where
hν and
Eg are the excitation and the band gap energies, and the CM efficiency increased rapidly with the increase of
hν⁄
Eg. No CM was observed less than the threshold value of
hν⁄
Eg≈2.5, which is close to that of CdSe QDs. As compared to a previous report by Nair and Bawendi, our result suggests that CM is sensitive to the QD surface conditions.
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Katsukiyo Miura, Masaru Ebine, Kazunori Ootsuka, Junji Ichikawa, Akira ...
2009 Volume 38 Issue 8 Pages
832-833
Published: August 05, 2009
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Supplementary material
α,α-Bis(dimethylsilyl)-substituted esters
1 were found to be quite valuable for alkenation of various aldehydes and ketones to α,β-unsaturated esters. The reaction of aldehydes with
1 proceeded spontaneously in DMSO at 30 °C to give α,β-unsaturated esters with good to high E selectivity. Under the same conditions, ketones were insensitive to
1; however, Li
2SO
4 and CaCl
2 effectively accelerated their alkenation.
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Hisao Matsuno, Takaaki Date, Yohei Kubo, Yuta Yoshino, Naoki Tanaka, A ...
2009 Volume 38 Issue 8 Pages
834-835
Published: August 05, 2009
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Supplementary material
A model protein was fused with the ELWRPTR peptide, which binds specifically to the isotactic poly(methyl methacrylate) (it-PMMA) film surface, and its adsorption on PMMA film surfaces was then investigated by surface plasmon resonance measurements. We found that the adsorption constant of the fusion protein for the it-PMMA film surface was 75-fold greater than that of native protein.
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Atsushi Kawata, Yoichiro Kuninobu, Kazuhiko Takai
2009 Volume 38 Issue 8 Pages
836-837
Published: August 05, 2009
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Supplementary material
A combination of catalytic amounts of [ReBr(CO)
3(thf)]
2 and tetrabutylammonium fluoride (TBAF) promoted the dimerization of aryl- and alkenyl-substituted alkynes with high regio- and stereoselectivities, and gave only (
E)-enynes. When terminal alkynes having a carbonyl group were employed as substrates, regioselective cyclotrimerization of the alkynes occurred to give 1,3,5-trisubstituted aromatic compounds.
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Keitaro Koda, Toyomi Matsu-ura, Yasushi Obora, Yasutaka Ishii
2009 Volume 38 Issue 8 Pages
838-839
Published: August 05, 2009
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Ethanol was efficiently converted into
n-butanol in the presence of a catalytic amount of [Ir(acac)(cod)], 1,7-octadiene, and EtONa. This method provides an efficient alternative approach to
n-butanol which is conventionally manufactured by oxo process of propylene with H
2 and CO followed by hydrogenation of butyraldehyde.
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Siwei Liu, Yupeng Wu, Yi Zhang, Zhenguo Chi, Yen Wei, Jiarui Xu
2009 Volume 38 Issue 8 Pages
840-841
Published: August 05, 2009
Released on J-STAGE: July 25, 2009
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Supplementary material
An ABA block polymer, polyester-
b-(aniline trimer)-
b-polyester, was synthesized through the reaction of double amino-capped aniline trimer and 6-hexanolide, with stannous octoate as catalyst, via ring-opening polymerization in anhydrous toluene solution. The structure of the block polymer was characterized and verified by
1H NMR, FT-IR, and UV–vis spectroscopies, CV, and GPC. The molecular weight (5.9×10
3 g mol
−1) calculated through
1H NMR was very close to the data collected by GPC (
Mn=5.0×10
3,
Mw=5.8×10
3, DMF as solvent). The polymer has good solubility in common organic solvents, such as THF and DMF. Both thermostability and electrostability of the block polymer are enhanced, compared to aniline trimer. Moreover, the polymer’s sensitivity to pH value is superior to the stand-alone aniline trimer. The enhancement of both stability and sensitivity may give the block polymer more opportunities to be used as sensor material.
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YooJin Kim, Jae-Hwan Pee, Jeong Ho Chang, Kyoon Choi, Kyung Ja Kim, Du ...
2009 Volume 38 Issue 8 Pages
842-843
Published: August 05, 2009
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Supplementary material
A novel red pigment displaying consistent properties up to a heating temperature of 1000 °C was synthesized, which indicates that the multilayer silica coating actually minimizes the agglomeration of the nanoparticles.
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Rui M. B. Carrilho, Artur R. Abreu, György Petöcz, J. Carles ...
2009 Volume 38 Issue 8 Pages
844-845
Published: August 05, 2009
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In this paper, we report an easy and highly efficient methodology for the synthesis of novel binaphthyl-based chiral monophosphites with
C3-symmetry. The preparation of the respective platinum complexes and their characterization by suitable in situ NMR spectroscopic studies confirmed the noteworthy hemilabile potential of the new phosphite ligands.
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Yoshihisa Matsushita, Mayuko Iwasawa, Tadashi Suzuki, Teijiro Ichimura
2009 Volume 38 Issue 8 Pages
846-847
Published: August 05, 2009
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Photocatalytic oxidation of
p-chlorophenol and toluene under gas–liquid–solid multiphase flow conditions was investigated by using a photocatalytic microreaction system. By loading both gaseous and liquid samples simultaneously into a microchannel with a photocatalytic titanium dioxide thin layer therein, a gas–liquid–solid multiphase annular flow was generated. The reaction yield was greatly enhanced with decreasing thickness of liquid layer because of improved efficiency of interaction and mass transfer between different phases.
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Atsushi Ogawa, Mizuo Maeda
2009 Volume 38 Issue 8 Pages
848-849
Published: August 05, 2009
Released on J-STAGE: July 25, 2009
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Supplementary material
We have developed a detector-free and multiple detection method for various analytes using some orthogonal pairs of cleavase-aptazymes and the corresponding probe-DNA-tethered gold nanoparticles (AuNPs) for each analyte. In this method, each cleavase-aptazyme cleaves itself only in the presence of its cofactor (i.e. analyte), and each resulting cleaved RNA hybridizes only to the corresponding probe DNA on AuNPs to induce AuNP aggregation that can be detected with the naked eye.
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Seung-Soo Kim, Jinsoo Kim, Seong-Cheol Shin, Foster A. Agblevor
2009 Volume 38 Issue 8 Pages
850-851
Published: August 05, 2009
Released on J-STAGE: July 25, 2009
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Bioethanol is made by the fermentation of biomass and different from petroleum-derived ethanol. The Korean government started a two year long feasibility study of using bioethanol mixed with sub-octane gasoline as transportation fuel in 2006. The development of analysis methods for bioethanol is an urgent issue to protect illegal circulation of synthetic ethanol in the transportation fuel market. In this letter, a new approach was introduced to analyze bioethanol and synthetic ethanol within a mixture of sub-octane gasoline and synthetic ethanol using low level liquid scintillation counting (LSC).
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Sungmin Kang, Seng-Kue Lee, Xiadong Li, Masatoshi Tokita, Junji Watana ...
2009 Volume 38 Issue 8 Pages
852-853
Published: August 05, 2009
Released on J-STAGE: July 25, 2009
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Supplementary material
A new homologous series of asymmetric bent-shaped molecules with two different side wings composed of Schiff base and ester linkage moieties were synthesized. The effects of asymmetric shape on the liquid crystalline properties were investigated and discussed in comparison with the conventional symmetric bent-shaped molecules.
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Xin Hu, Huarong Liu, Xueping Ge, Song Yang, Xuewu Ge
2009 Volume 38 Issue 8 Pages
854-855
Published: August 05, 2009
Released on J-STAGE: July 25, 2009
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In this paper, we have successfully prepared submicron-sized snowman-like polystyrene (PS) particles by radiation-induced seeded emulsion polymerization at room temperature. The monodispersed crosslinked PS particles with an average size of 358 nm acted as seed particles. The influence of polymer/monomer weight ratio on the morphology was studied. The results showed that snowman-like PS particles could be fabricated in high yield about 90% when the polymer/monomer weight ratio was 0.2:1.
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Maria Ohki, Morio Asaoka
2009 Volume 38 Issue 8 Pages
856-857
Published: August 05, 2009
Released on J-STAGE: July 25, 2009
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A widely applicable procedure for the preparation of ketones from carboxylic acids via sodium salts with R(PrNH)Mg is described.
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Takeshi Sakano, Fuyuki Ito, Osamu Hirata, Masaaki Ozawa, Toshihiko Nag ...
2009 Volume 38 Issue 8 Pages
858-859
Published: August 05, 2009
Released on J-STAGE: August 05, 2009
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Supplementary material
Neutral donors and hyperbranched polymer with many viologen groups formed charge-transfer complexes in solutions and solid films. The charge-transfer absorption and fluorescence spectra showed red shifts with increasing donor fractions only in the case of polymer solid films, strongly suggesting solvatochromism in solid films and formation of multichromophore CT complex. These are unique microenvironmental effects of the present cationic polymer.
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