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Eric Richard Oktavianus Siwu, Osamu Ohno, Masaki Kita, Daisuke Uemura
2008 Volume 37 Issue 3 Pages
236-237
Published: March 05, 2008
Released on J-STAGE: January 29, 2008
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Supplementary material
Durinskiol B (
1) was isolated from the symbiotic marine dinoflagellate
Durinskia sp., along with durinskiol A (
2). The planar structure of
1 was determined by detailed NMR analysis. Durinskiol B (
1) has structure similarity with durinskiol A (
2) except for the existence of one methyl excess in the side chain of durinskiol B.
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Yuki Itoh, Michiya Matsusaki, Toshiyuki Kida, Mitsuru Akashi
2008 Volume 37 Issue 3 Pages
238-239
Published: March 05, 2008
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Supplementary material
The time-modulated release of two kinds of proteins in response to specific enzymes was achieved by using multilayered capsules incorporating these proteins in separate positions of the capsule, which were prepared via layer-by-layer assembly of chitosan, dextran sulfate, and poly(
L-lysine).
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Xiushuang Yang, Xu Chen, Jiahui Zhang, Wensheng Yang
2008 Volume 37 Issue 3 Pages
240-241
Published: March 05, 2008
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Supplementary material
Electroactive multilayer films composed of exfoliated nanosheets of α-zirconium phosphate and myoglobin (Mb) have been fabricated on the surface of glassy carbon electrodes through electrostatic layer-by-layer self-assembly technique. Direct electron-transfer process of Mb immobilized in the film was investigated.
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Toshiyuki Sato, Kiwamu Sue, Yuka Akiyama, Kei Shibata, Shin-ichiro Kaw ...
2008 Volume 37 Issue 3 Pages
242-243
Published: March 05, 2008
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Hydrothemal synthesis of γ-Al
2O
3 nanoparticles obtained from aqueous Al(NO
3)
3 solutions was carried out at 673 K and under pressures ranging from 30 to 40 MPa for 2 s using a flow apparatus. Effect of pressure and molality of HNO
3 and KOH on crystal phase was examined. All products were a mixture of γ-Al
2O
3 and AlOOH having crystallite sizes less than 18 nm. Weight ratio of γ-Al
2O
3 to AlOOH in the products evaluated from TG showed a good correlation with pH at 673 K and increased from 0.17 to 1.16 with decreasing pH.
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Mai Taguchi, Yuko Sameshima, Asako Igashira-Kamiyama, Shigehisa Akine, ...
2008 Volume 37 Issue 3 Pages
244-245
Published: March 05, 2008
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Supplementary material
Treatment of [Au(
D-pen-
S)
2]
3− (
D-H
2pen =
D-penicillamine) with [PdCl
4]
2− in a 1:1 ratio gave a S-bridged Pd
II2Au
I2 tetranuclear complex, in which two square-planar [Pd(
D-pen-
N,
S)
2]
2− units are linked by two linear Au
I ions. This tetranuclear complex was found to form two geometrical isomers that are discriminated by the cis–trans isomerism of [Pd(
D-pen-
N,S)
2]
2− units.
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Shinsuke Sando, Atsushi Narita, Masayoshi Hayami, Yasuhiro Aoyama
2008 Volume 37 Issue 3 Pages
246-247
Published: March 05, 2008
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Supplementary material
We developed a new fluorescent pH indicator from a common Hoechst 33258 fluorescent dye. Unlike the parent compound, the improved Hoechst probe, wherein two methyl substituents were introduced into the terminal phenol ring, is fluorescent in an aqueous solution at neutral pH, and showed a unidirectional wavelength shift in the fluorescence emission spectra on lowering the pH. Thus, the probe can be used as a blue/green color-changing fluorescent pH indicator in an acidic range.
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Satoshi Minakata, Hiroshi Inada, Mitsuo Komatsu, Hirotake Kajii, Yutak ...
2008 Volume 37 Issue 3 Pages
248-249
Published: March 05, 2008
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Supplementary material
Novel fluorescent aluminium complexes of
N-hydroxy-3,6-diaryl-4-phenyl-2-pyridone derivatives were synthesized and their fluorescent properties were investigated. The complexes having a trifluoromethyl group and a methoxy group at the para-position on the 3- and 6-phenyl groups exhibit purple fluorescence in the solid state.
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Taichi Kano, Akihiro Yamamoto, Haruka Mii, Jun Takai, Seiji Shirakawa, ...
2008 Volume 37 Issue 3 Pages
250-251
Published: March 05, 2008
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Binaphthyl-based amino acids were prepared and applied for the direct asymmetric aminoxylation of aldehydes with nitrosobenzene. The reaction catalyzed by (
S)-
1e proceeded smoothly to give the aminoxylated product in good yield and enantioselectivity. This method represents a rare example of the direct asymmetric aminoxylation by a non-proline-type catalyst.
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Hiroshi Irie, Shuhei Miura, Ryuhei Nakamura, Kazuhito Hashimoto
2008 Volume 37 Issue 3 Pages
252-253
Published: March 05, 2008
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Supplementary material
TiO
2 powder grafted with Cr
III ions was demonstrated to become a novel type of hybrid photocatalyst. It could decompose 2-propanol into CO
2 via acetone under visible-light (450–580 nm) irradiation. The reaction is explained by the photoinduced direct charge transfer from surface Cr
III ion to the conduction band of TiO
2, in which injected electron into the conduction band reduces oxygen and the Cr
IV oxidizes 2-propanol.
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Chengjun Zhou, Qixin Zhuang, Jun Qian, Xinxin Li, Zhewen Han
2008 Volume 37 Issue 3 Pages
254-255
Published: March 05, 2008
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A simple coprecipitation method has been performed to achieve a noncovalent modification of multiwalled carbon nanotubes (MWNTs) with polyhydroxyamide (PHA). The PHA-wrapped MWNTs (PHA-MWNT) prepared was verified by FT-IR and SEM. The weight content of nanotubes in PHA-MWNT is determined and analyzed by TGA. There are the strong interaction between PHA and MWNTs including hydrogen bonds besides π–π stacking and van der Waals interactions. Moreover, PHA-MWNT has a remarkable solubility in polar solvents and a good thermal stability.
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Nobuyuki Akai, Akio Kawai, Kazuhiko Shibuya
2008 Volume 37 Issue 3 Pages
256-257
Published: March 05, 2008
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The FTIR spectrum of vaporized ionic liquid has been measured with a low-temperature rare-gas matrix-isolation technique for the first time. 1-Ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, EmimTFSI, was employed as thermally vaporizable ionic liquid. The matrix-isolated IR spectrum was found to be different from either the IR spectrum of neat ionic liquid or the theoretically simulated stable 1:1 ion-pair spectrum. This observation may suggest that the vaporized ionic liquid has a certain structure different from either the liquid phase or theoretically expected ion-pair form.
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Tamaki Nakano, Tohru Yade
2008 Volume 37 Issue 3 Pages
258-259
Published: March 05, 2008
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Supplementary material
Cation radicals of oligomers and polymers of dibenzofulvene having a π-stacked conformation showed broad absorption bands based on charge resonance in near IR region, which red-shifted with increasing degree of polymerization, indicating that charge delocalization takes place through multiple, stacked fluorene moieties.
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Maroof Ali, Gary A. Baker, Siddharth Pandey
2008 Volume 37 Issue 3 Pages
260-261
Published: March 05, 2008
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Supplementary material
Redissolution of five popular cationic dyes with a water-miscible ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate after their near quantitative precipitation from aqueous solutions is observed. The behavior of the ionic liquid is similar to that of a salt at lower concentrations, while it acts like a cosolvent at higher concentrations.
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Ziyi Ge, Teruaki Hayakawa, Shinji Ando, Mitsuru Ueda, Toshiyuki Akiike ...
2008 Volume 37 Issue 3 Pages
262-263
Published: March 05, 2008
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A novel bipolar molecule, 3,8-bis[4-(9
H-carbazol-9-yl)phenyl]-1,10-phenanthroline (CZPT) was synthesized and employed as the host in phosphorescent organic light-emitting devices (OLEDs). A maximum luminance of 7000 cd/m
2 was achieved using
fac-tris(2-phenylpyridine)iridium (Ir(ppy)
3) as the emitting material.
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Tatsushi Baba, Hisashi Shimakoshi, Ayataka Endo, Chihaya Adachi, Yoshi ...
2008 Volume 37 Issue 3 Pages
264-265
Published: March 05, 2008
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The photophysical properties and photooxidation ability of the β-sulfonatoporphycenes are reported. The photophysical parameters depend on the number of substitutions. The disulfonated porphycene
2 is expected to be a new photosensitizer due to its high catalytic activity and photostability.
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Mayu Hashimoto, Yoshiyuki Koyama, Toshinori Sato
2008 Volume 37 Issue 3 Pages
266-267
Published: March 05, 2008
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We developed pDNA/chitosan complexes coated with sugar-modified PEG-A/Cs, which are poly(ethylene glycol) derivatives with a side chain of carboxylic acid and sugar. The cationic pDNA/chitosan complexes were coated with anionic sugar-modified PEG-Cs, and anionic ternary complexes were formed. Coating the pDNA/chitosan complexes with maltose- or lactose-modified PEG-A/C (Mal–PEG-A/C or Lac–PEG-A/C, respectively) greatly promoted their stability in water and transfection efficiency in vitro.
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G. Srihari, M. Marthanda Murthy
2008 Volume 37 Issue 3 Pages
268-269
Published: March 05, 2008
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Supplementary material
An environmentally benign method for the synthesis of 3,3-di(3-indolyl)- and 3,3-di(2-pyrrolyl)oxindoles by using various isatins, indoles, and pyrrole in water in excellent yields and high regioselectivity without using any catalyst.
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Katsukiyo Miura, Makoto Horiike, Gen Inoue, Junji Ichikawa, Akira Hoso ...
2008 Volume 37 Issue 3 Pages
270-271
Published: March 05, 2008
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In the presence of catalytic amounts of PtCl
2 and AgOTf, 5-methyl-5-hexen-1-ol reacted with aldehydes to give 2,3-disubstituted tetrahydropyrans in moderate to high yields with trans-stereoselectivity. Use of 5-methyl-5-hexen-1-ols bearing a methyl group at the C1-, C2-, or C3-position led to highly stereoselective synthesis of trisubstituted tetrahydropyrans.
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Atsunori Mori, Junichi Shikuma, Motoi Kinoshita, Tomiki Ikeda, Masahir ...
2008 Volume 37 Issue 3 Pages
272-273
Published: March 05, 2008
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Supplementary material
An amphiphilic block copolymer composed of poly(ethylene oxide) and poly(methacrylate ester) bearing a donor–acceptor-type 2,5-diarylthiazole in the side chain is prepared by atom-transfer radical polymerization. The precursor 2,5-diarylthiazole monomer is prepared by transition-metal-catalyzed CH arylation reactions. A thin film of the block copolymer formed by spin coating exhibited nanoscale phase separation with homeotropically oriented domains, while a film formed by the friction transfer method showed domains with homogeneous orientation confirmed by AFM. Spectroscopic studies of the film, utilizing the luminescent characteristics of 2,5-diarylthiazole, showed polarized light emission as a result of the liquid crystalline ordering.
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Xiaohong Hou, Taishi Wada, Sayaka Gion, Kazuya Kobiro
2008 Volume 37 Issue 3 Pages
274-275
Published: March 05, 2008
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Supplementary material
Polycyclic aromatic 1-pyrenecarboxylic acid (
2) was investigated as an anion selective probe by means of UV–vis and fluorescence titrations in CH
3CN. Acid
2 showed stronger affinity and higher selectivity to HPO
42− and SO
42− over monovalent anions, such as F
−, Cl
−, Br
−, H
2PO
4−, ClO
4−, HSO
4−, NO
3−, BF
4−, and PF
6−. Complete fluorescence quenching upon complexation of acid
2 with HPO
42− and SO
42− was successfully observed by the eye.
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Masashi Takahashi, Yuichi Okada, Koichi Kobayashi
2008 Volume 37 Issue 3 Pages
276-277
Published: March 05, 2008
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Preparation of thin titania nanotube films has been attempted using Langmuir–Blodgett (LB) technique. The resulting LB monolayer exhibited closely packed arrangement of the nanotube bundles in a monoparticulate layer on the solid substrate. Also, domain structure due to strong lateral interaction among the bundles lying side-by-side was observed even for the LB films deposited at a low surface pressure. Moreover, multilayer deposition of the monoparticulate films provided precise control of the film thickness.
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Ryohei Ogawa, Takayuki Nakajima, Isao Shimizu
2008 Volume 37 Issue 3 Pages
278-279
Published: March 05, 2008
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Supplementary material
The effects on ligands in nucleophilic reaction of η
3-allylpalladium chloride dimers were studied. Reaction of steroid
1 with Na
2PdCl
4 in concentrated HCl under CO gave the
cis,
trans-bis-μ-dichloro-η
3-allylpalladium complex
2 after recrystallization. Reaction of
2 with malonate anion in the presence of PPh
3 afforded
trans-
3 in 65% yield. When Dppe was used,
cis-
3 was obtained as the major product. In nucleophilic reactions of bicyclic η
3-allylpalladium chloride complex
4a or
4b with PPh
3,
cis-
5 was the major product. However, the reaction with Dppe gave
trans-
5 predominantly. The stereochemistry in the nucleophilic reaction of η
3-allylpalladium chloride dimer is dependent on the added phosphines.
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Masashi Arakawa, Junji Yamamoto, Hiroyuki Kagi
2008 Volume 37 Issue 3 Pages
280-281
Published: March 05, 2008
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Raman spectra of CO
2 fluids were measured at 288–329 K and densities of 0.81–1.16 g/cm
3. The peak area ratios of hot bands at 1265 and 1408 cm
−1 and Fermi doublet peaks at 1388 and 1285 cm
−1 were correlated linearly with temperature. The peak area ratios are correlated with density. Calculation of the relationship between the peak area ratio, temperature, and density was achieved. Micro-Raman analysis enabled in situ temperature measurement of CO
2 fluid with high spatial resolution.
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Hiroto Kudo, Hideyuki Aoki, Tadatomi Nishikubo
2008 Volume 37 Issue 3 Pages
282-283
Published: March 05, 2008
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Well-defined linear and star-shaped polystyrenes were synthesized, and the temperature dependence of their refractive index (
nD) in the film state was examined. The values of
nD decreased with increasing temperature, with an inflection at the glass-transition temperature (
Tg). Above the
Tg, the values of difference of
nD between star-shaped polymer and linear polymer increased at elevated temperatures.
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Tomoya Kashiki, Eigo Miyazaki, Kazuo Takimiya
2008 Volume 37 Issue 3 Pages
284-285
Published: March 05, 2008
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Supplementary material
2,6-Dialkyl[1,2-
b:4,5-
b′]dithiophenes were synthesized as novel solution-processible organic semiconductors. Thin films of the organic semiconductors deposited on Si/SiO
2 substrates by spin coating have well-ordered structures as confirmed by XRD analysis. Evaluations of the devices under ambient conditions showed typical p-channel FET responses with the field-effect mobility of ca. 10
−2 cm
2 V
−1 s
−1 and
Ion⁄
Ioff of ca. 10
5.
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Takashi Sugimura, Takao Nagai
2008 Volume 37 Issue 3 Pages
286-287
Published: March 05, 2008
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Supplementary material
A chiral diazo ester having a hydroxy group in the proper geometry produces an adduct with water up to 92% de upon treatment with a rhodium catalyst. This high stereoselectivity is attributable to the intramolecular hydrogen bond between the internal hydroxy group and the rhodium carbenoid.
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Yasuo Ishii, Atsushi Toyoshima, Kazuaki Tsukada, Masato Asai, Hayato T ...
2008 Volume 37 Issue 3 Pages
288-289
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We report on new and much more precise cation-exchange data of element 104, rutherfordium (Rf), in the fluoride ion concentration [F
−] range of 5.29×10
−5−1.04×10
−3 M. The result based on one-atom-at-a-time chemistry clearly demonstrates that the distribution coefficients (
Kd) decrease with increasing [F
−], suggesting successive fluoride complexation of Rf. The complexation of Rf is briefly discussed in terms of fully relativistic density functional calculation theory.
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Yoshiaki Nakao, Masahide Takeda, Jinshui Chen, Tamejiro Hiyama, Yoshit ...
2008 Volume 37 Issue 3 Pages
290-291
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Supplementary material
The title reaction is found to proceed in the presence of a rhodium/diene catalyst. Variously substituted diarylmethylamines and allylamines having an
N-arenesulfonyl protection are obtained in good yields, which are important building blocks in organic synthesis.
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Koji Nakao, Shinya Hayami, Motoko Akita, Katsuya Inoue
2008 Volume 37 Issue 3 Pages
292-293
Published: March 05, 2008
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Supplementary material
2-D Hofmann-type compound [Fe(4-phpy)
2Ni(CN)
4]·H
2O (4-phpy = 4-phenylpyridine) was synthesized and characterized by magnetic susceptibility measurements. The compound exhibited spin-crossover behavior with thermal hysteresis loop and LIESST effect. The activation energy and the tunneling rate constant were estimated as
Ea=773 (cm
−1) and
kHL(
T→0)=4.51×10
−6 (s
−1) for the compound.
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Ziyi Ge, Teruaki Hayakawa, Shinji Ando, Mitsuru Ueda, Toshiyuki Akiike ...
2008 Volume 37 Issue 3 Pages
294-295
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A fluorinated carbazole, 9,9′-[2,2′-bis(trifluoromethyl)biphenyl-4,4′-diyl]bis(9
H-carbazole) (6FCBP) was prepared, which exhibited better solubility compared to the well-known hole-transporting material 4,4′-bis(carbazol-9-yl)biphenyl (CBP). 6FCBP was employed to fabricate OLEDs by spin coating or vacuum deposition with excellent performance.
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Zhifu Liu, Toshinari Yamazaki, Yanbai Shen, Dan Meng, Toshio Kikuta, N ...
2008 Volume 37 Issue 3 Pages
296-297
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We demonstrate the fabrication of WO
3 nanoflakes by dealloying with subsequent thermal oxidation. Sputtered amorphous W
0.68Cu
0.32 alloy films were dealloyed in HNO
3 solution where Cu was selectively removed and W self-assembled into cross-linked cubic phase W nanoflakes. This kind of W nanoflakes was transformed to monoclinic WO
3 nanoflakes by thermal oxidation at 500 °C. Gas sensor made using the WO
3 nanoflakes showed promising NO
2-sensing performance.
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Takanori Shima, Zhaomin Hou
2008 Volume 37 Issue 3 Pages
298-299
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Supplementary material
The reaction of half-sandwich lutetium dialkyl complex Cp
∗Lu(CH
2SiMe
3)
2(THF) (Cp
∗= C
5Me
5) with ruthenium–trihydrido–phosphine complexes Cp
∗Ru(PR
3)H
3 (R
3 = Ph
3, Ph
2Me, PhMe
2, and Me
3) at 50 °C afforded the corresponding Lu/Ru heterobimetallic dihydride complexes, which was accompanied by selective C–H bond activation of the phosphine ligand. The reaction of such a resulting phosphinomethyl-bridged Lu/Ru complex with PhSiH
3 led to selective dehydrogenative silylation at the “CH
2” unit.
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Ichiro Minami, Naoko Watanabe, Hidetaka Nanao, Sigeyuki Mori, Kenta Fu ...
2008 Volume 37 Issue 3 Pages
300-301
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The first additives that improve the tribological properties of ionic liquids were designed. They were evaluated by a ball-on-flat type tribo-test under reciprocating motion. Tetraalkylammonium and tetraalkylphosphonium salts of N-protected aspartic acid was dissolved in 1-alkyl-3-methylimidzolium bis(trifluoromethylsulfonyl)imide. They prevented wear remarkably and reduced friction considerably. The salt of N-protected glutamic acid prevented wear but did not reduce friction under the conditions we have evaluated. A new model of boundary film composed of liquid clathrate structure is proposed herein.
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Lishan Yang, Chunli Guo, Liancheng Wang, Zhongchao Bai, Li Fu, Xiaojia ...
2008 Volume 37 Issue 3 Pages
302-303
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Silicon nitride nanorods were fabricated from Si, NaN
3, and sulfur powder at 250 °C. XRD patterns show that the final product is mixed α- and β-Si
3N
4. SEM, TEM, and HRTEM images reveal that the product was composed of crystalline Si
3N
4 nanorods with diameters in the range of 70–400 nm and lengths up to 3 μm. It is found that sulfur plays a crucial role in the low-temperature formation of Si
3N
4 powders. Low reaction temperature and cheap raw materials make it possible for large scale synthesis of Si
3N
4 nanomaterials.
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Izumi Nakai, Yukari Baba, Keiichi Tanaka, Satoshi Nakayama, Minako Han ...
2008 Volume 37 Issue 3 Pages
304-305
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Supplementary material
A transition edge sensor (TES) microcalorimeter detector with an energy resolution of 17.3 eV@1.74 keV mounted on an SEM has been newly developed and applied for the first time to reveal the cellular distribution of Cd in a cadmium hyper-accumulating plant. The elemental maps of the light element P as well as the heavy elements Cd and Zn were also successfully obtained. Similarly, the simultaneous analysis of As Lα and Mg Kα in an arsenic-accumulating fern was possible with this system. It is expected that the microcalorimeter EDS system has the potential to open a new area of the X-ray microanalysis of biological samples.
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Junli Wang, Qing Yang
2008 Volume 37 Issue 3 Pages
306-307
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Supplementary material
Nanocrystalline InP and InAs were solvothermally synthesized by the reaction of newly reduced indium with triphenylphosphine (PPh
3) and triphenylarsine (AsPh
3) in benzene. The products were characterized by XRD, TEM, and EDX. PPh
3 and AsPh
3 with high safety as excellent P and As sources will provide a novelly alternative synthetic route to III–V semiconductor compouds.
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Ping-Lin Li, Zhan-Xin Zhang, Zhong-Jian Jia
2008 Volume 37 Issue 3 Pages
308-309
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Supplementary material
Four new compounds (
1a and
2–
4), a series of uncommon eremophilane derivatives with C19-carbon skeleton, were isolated from the roots of
Ligularia sagitta Maxim. Their structures were respectively determined by extensive spectroscopic analysis (IR, MS, NMR, and X-ray).
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Vikas S. Kshirsagar, Subramanian Vijayanand, Hari S. Potdar, Pattayil ...
2008 Volume 37 Issue 3 Pages
310-311
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This is a first report of highly efficient heterogeneous nanostructured Co
3O
4 catalyst (6–8 nm) having high surface area (95 m
2/g) developed for selective liquid phase air oxidation of
p-cresol under atmospheric pressure conditions.
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Junpei Miyake, Yoshiki Chujo
2008 Volume 37 Issue 3 Pages
312-313
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The preparation of molecular recognizable hybrid materials with cucurbituril was achieved by applying sol–gel reaction in an aqueous formic acid without any functionalization of cucurbituril moieties. The hybrid materials obtained showed good film forming properties and benzene recognition abilities.
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Katsuhiko Tsunashima, Fumihiro Yonekawa, Masashi Sugiya
2008 Volume 37 Issue 3 Pages
314-315
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The electrolytic properties of a lithium battery electrolyte based on triethyl(2-methoxyethyl)phosphonium bis(trifluoromethylsulfonyl)imide are described. Testing charge–discharge performance of the cell containing the lithium-binary phosphonium ionic liquid electrolyte showed excellent capacity and rechargeability, compared to the cell containing a comparative ammonium ionic liquid electrolyte.
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Joji Ohshita, Junya Matsukawa, Moeko Hara, Atsutaka Kunai, Shotaro Kaj ...
2008 Volume 37 Issue 3 Pages
316-317
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When TiO
2 electrodes were dipped in chloroform solutions containing disilanylene–oligothienylene polymers and the solutions were irradiated (λ
max>400 nm), the polymer-bound electrodes were obtained, which could be used for dye-sensitized solar cells.
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Tatsumi Ishihara, Yusuke Shinmyo, Kazuya Goto, Noriko Nishiyama, Hideh ...
2008 Volume 37 Issue 3 Pages
318-319
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Supplementary material
Study of the NO decomposition activity of the Ruddlesden–Popper-type oxide Sr
3Fe
2O
7 doped with Ba and Zr revealed that Sr
3Fe
2O
7 exhibits a high NO decomposition activity. Doping Ba and Zr for the Sr and Fe sites, respectively, is highly effective for improving NO decomposition activity. A high N
2 yield of 72% is achieved at 1123 K and a N
2 yield of 32% is sustained under a 2.5% oxygen cofeeding condition.
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Kazuaki Hiroki, Makiko Hatori, Hiroshi Yamashita, Jun-ichi Sugiyama
2008 Volume 37 Issue 3 Pages
320-321
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Supplementary material
Solid acid catalysts such as H–Beta zeolites effectively promote dehydrative intramolecular cyclization of 4-arylbutyric acids under microwave irradiation to give 1-tetralone derivatives in high yields.
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Takeshi Baba, Yutaka Imamura, Munehiko Okamoto, Hiromi Nakai
2008 Volume 37 Issue 3 Pages
322-323
Published: March 05, 2008
Released on J-STAGE: February 16, 2008
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A frozen-orbital analysis (FZOA) that has been proposed in order to analyze excitation between degenerate orbitals is applied to molecules with
Ih symmetry such as (B
12H
12)
2− and C
60. In the FZOA approach, the ordering and the energy splittings of the excited states involving degenerate orbitals can be understood through a simple and intuitive picture. FZOA results for molecules with
Ih symmetry also reveal that two general rules hold: (i) The highest transition among transitions between degenerate orbitals is dipole-allowed; (ii) The excitation energy of the highest transition is larger than those of the other transitions.
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Ryo Ohori, Katsumi Uchida, Asami Saito, Hirofumi Yajima
2008 Volume 37 Issue 3 Pages
324-325
Published: March 05, 2008
Released on J-STAGE: February 16, 2008
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Supplementary material
In order to develop a new supramolecular complex for use as an active drug carrier, we prepared complexes of an anionic liposome comprising poly(ethylene glycol) (PEG
n=50) monooleyl ether with folate-conjugated poly(amidoamine) dendrimers (FA-PAMAM). Regardless of the ratio of FA-PAMAM to liposome, the complexes were stably dispersed in water. These results suggest that the PEG chains play an important role in the dispersion stability of the supra-complexes, preventing the complexes from aggregating.
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Yoshihisa Fujii, Hironori Atarashi, Toshihiko Nagamura, Keiji Tanaka
2008 Volume 37 Issue 3 Pages
326-327
Published: March 05, 2008
Released on J-STAGE: February 16, 2008
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Morphology for films of poly(methyl methacrylate) with various molecular weights was observed before and after methanol immersion by using atomic force microscopy so that the effect of chain entanglement on film retention of a polymer in a liquid can be discussed.
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Syuhei Yamaguchi, Kazuhiro Uehara, Keigo Kamata, Kazuya Yamaguchi, Nor ...
2008 Volume 37 Issue 3 Pages
328-329
Published: March 05, 2008
Released on J-STAGE: February 16, 2008
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Supplementary material
A novel ruthenium-containing silicotungstate of [(CH
3)
2NH
2]
8K
2H
2[(γ-SiW
10O
36)
2Ru
4Cl
4O
2(OH)
4]·23H
2O (
1) was obtained as a single crystal suitable for X-ray crystallographic analysis by the reaction of a divacant lacunary γ-Keggin silicotungstate K
8[γ-SiW
10O
36] with K
2[RuCl
5(OH
2)]. The unprecedented dimeric silicotungstate consisted of two [γ-SiW
10O
36]
8− units sandwiching an adamantanoid ruthenium–oxygen cluster core [Ru
4Cl
4O
2(OH)
4]
4+.
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Mariko Takayanagi, Yoko Imai, Kazuo Tajima
2008 Volume 37 Issue 3 Pages
330-331
Published: March 05, 2008
Released on J-STAGE: February 16, 2008
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This document will communicate that the Au/TiO
x photocatalyst shows a high activity with tremendous efficiency for the degradation of volatile organic compounds, such as formaldehyde, acetaldehyde, and phenol, with visible light. Also, we found that photocatalytic degradation of phenol could take place in dry air as a carrier gas but not in Ar atmosphere.
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