-
So Yubuchi, Akitoshi Hayashi, Masahiro Tatsumisago
2015 Volume 44 Issue 7 Pages
884-886
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 08, 2015
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Sulfide solid electrolytes with cubic Na
3PS
4 phase were firstly synthesized via a liquid-phase process. A yellow solution was obtained after the reaction of Na
2S and P
2S
5 in
N-methylformamide (NMF) solvent, and a cubic Na
3PS
4 was mainly precipitated by heat treatment for removing the solvent. The ionic conductivity of the obtained electrolyte was 2.6 × 10
−6 S cm
−1 at room temperature. The present conductivity is not as high as a Na
+ ion conductor, but the prepared solution is useful for forming an electrolyte coating on electrode particles, which will improve the electrochemical performance of all-solid-state sodium batteries.
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Yunfeng Lin, Chongqing Wang, Yichang Pan, Long Xiang, Yan Liu
2015 Volume 44 Issue 7 Pages
887-889
Published: July 05, 2015
Released: July 05, 2015
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Y
3+- and La
3+-doped zeolitic imidazolate frameworks-8 (ZIF-8) crystals were first successfully prepared by hydrothermal synthesis. As-synthesized crystals were investigated by X-ray diffraction, field-emission scanning electron microscope, fluorescence spectrometric titration, and gas adsorption measurement. The Y
3+-doped ZIF-8 crystals were found to be highly sensitive to amines (ethylamine, diethylamine, and triethylamine), providing a novel candidate for the sensitive and rapid detection of amines.
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Yuki Obukuro, Go Sakai, Yuji Okuyama, Naoki Matsunaga, Shigenori Matsu ...
2015 Volume 44 Issue 7 Pages
890-892
Published: July 05, 2015
Released: July 05, 2015
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Single-phase Sr
2Bi
2O
5 was formed by calcination of the heterobimetallic complex, Sr[Bi(DTPA)]·9H
2O, at 700 °C for 6 h in air. La-doping by 5 and 10 mol % into Sr
2Bi
2O
5 was also examined. There were no traces of impurity phase in the 5 mol % La-doped Sr
2Bi
2O
5 powder, on the other hand, impurity phases such as Sr
3Bi
4O
9 and SrCO
3 were identified for the 10 mol % La-doped sample. UV–vis spectroscopy revealed that the absorption edge of La-doped Sr
2Bi
2O
5 exhibits red shift as compared to the pure Sr
2Bi
2O
5 and the shift increases with the increase of La
3+ doping. It was confirmed that the photocatalytic activity of Sr
2Bi
2O
5 for the oxidation of isopropanol is improved with La doping under visible-light irradiation (λ ≥ 420 nm).
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Hirokazu Kobayashi, Kento Aoki, Tetsuo Asaji
2015 Volume 44 Issue 7 Pages
893-895
Published: July 05, 2015
Released: July 05, 2015
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The molecular orientation and dynamics of 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxyl (TEMPOL) radicals in one-dimensional (1D) nanochannels of the crystal of tris(
o-phenylenedioxy)cyclotriphosphazene (TPP) were examined using electron spin resonance (ESR) measurements. TEMPOL radicals in the TPP nanochannels performed rotational diffusion motion not around the principal
y axis of the
g-tensor, as observed in most cases of TEMPO derivatives, but approximately around the principal
z axis with much larger activation energy.
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Wei Huang, Fuxing Shen, Dayu Wu
2015 Volume 44 Issue 7 Pages
896-898
Published: July 05, 2015
Released: July 05, 2015
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Structurally tunable small signaling molecules have been specifically designed to probe-free formaldehyde concentrations as low as 0.1 ppm, establishing the utility of probing the exposure limit for safe human consumption according to the guidelines suggested by W.H.O. The substrate, 2-aminobenzoylhydrazide, fluorescent core skeleton was designed for the construction of diverse quinazoline compounds with combinatorial substituent-pending potentials via rapid condensation reactions with aldehyde groups. After identifying the fluorescent species by
1H NMR and X-ray crystallography, we demonstrate that the fluorescent emission is substituent dependent and that, by simple structural variation, the fluorescence can be tunable through controlling internal charge transfer (ICT) within a dye platform. Finally, by introducing more electron-rich ferrocene into the substrate to further undermine the ICT process, we demonstrate highly sensitive formaldehyde sensing through dual signal output, including fluorescence and redox potential.
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Naoto Satake, Tomohisa Hirano, Keigo Kamata, Kosuke Suzuki, Kazuya Yam ...
2015 Volume 44 Issue 7 Pages
899-901
Published: July 05, 2015
Released: July 05, 2015
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A novel diniobium-substituted silicodecatungstate, [γ-HSiW
10O
38Nb
2(η
2-O
2)
2]
5− (
I), was successfully synthesized by the reaction of [HNb
6O
19]
7− and [γ-SiW
10O
36]
8− in the presence of H
2O
2 under acidic conditions. In the presence of a suitable proton source, e.g., HClO
4,
I could act as a stable homogeneous catalyst for H
2O
2-based oxidation.
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Ayana Yokota, Naoto Chatani
2015 Volume 44 Issue 7 Pages
902-904
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 09, 2015
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The reaction of aromatic amides containing a 5-chloro-8-aminoquinoline moiety as the directing group with arylsulfonyl chlorides in the presence of Ni(OTf)
2 as the catalyst results in sulfonylation at the
ortho-position. Various arylsulfonyl chlorides can be used as the coupling partners.
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Takanori Suzuki, Yu Umezawa, Yuto Sakano, Hitomi Tamaoki, Ryo Katoono, ...
2015 Volume 44 Issue 7 Pages
905-907
Published: July 05, 2015
Released: July 05, 2015
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11,11,12,12-Tetrakis(4-methoxyphenyl)-1,4-diaza-2,3-diphenyl- and -1,4,5,8-tetraaza-2,3,6,7-tetraphenylanthraquinodimethanes (
1 and
2) adopt a bent geometry. They undergo reversible redox interconversion with twisted dications
12+ and
22+, exhibiting a vivid change in color (electrochromism). Treatment with acid also induced drastic color change due to the formation of protonated species H-
1+ and H-
2+ (halochromism), thus demonstrating their two-way-input chromic behavior.
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Takeshi Inoue, Makoto Inokuchi
2015 Volume 44 Issue 7 Pages
911-913
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 10, 2015
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Light irradiation experiments on diarylethene,
cis-1,2-dicyano-1,2-bis(2,4,5-trimethyl-3-thienyl)ethane (CMTE), under shear stress have been performed. From the results, it is apparent that the combination of shear stress and visible light of around 500 nm could induce the photoisomerization of CMTE to the closed-ring isomer. The present work shows that shear stress could adjust the wavelength of light for the photochromism from ultraviolet light region to visible light.
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Ravi Kumar, Pinky Yadav, Amit Kumar, Muniappan Sankar
2015 Volume 44 Issue 7 Pages
914-916
Published: July 05, 2015
Released: July 05, 2015
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meso-Tetrakis(4′-diethoxyphosphorylphenyl)porphyrin (H
2TPhPP) was synthesized via modified Lindsey method with higher yield (50%) as compared to reported methods. H
2TPhPP exhibited 120–140 mV anodic shifts in first ring redox potentials as compared to H
2TPP. Similarly, anodic shifts of MTPhPP (M = Ni(II), Cu(II), and Zn(II)) were 70–210 mV in first ring oxidation potentials and 80–120 mV in first ring reduction potentials, as compared to corresponding MTPPs due to the strong electron-withdrawing nature of diethoxyphosphoryl substituents.
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Longfei Cai, Chunxiu Xu, Yingcheng Chen, Minghua Zhong, Yunying Wu
2015 Volume 44 Issue 7 Pages
917-919
Published: July 05, 2015
Released: July 05, 2015
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We used a surfactant to fabricate a microfluidic paper-based analytical device (µPAD) by selective modification of hydrophobic filter paper. Hydrophobic tails of the surfactant penetrate and remain in the hydrophobic layer of filter cellulose while hydrophilic heads extend out of the hydrophobic layer, forming a hydrophilic layer on the hydrophobic cellulose to direct flow of aqueous solutions. A flower-shaped µPAD was fabricated by the presented method and was applied to the protein assay in human urine.
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Masaru Yamasaki, Takayuki Ishida
2015 Volume 44 Issue 7 Pages
920-921
Published: July 05, 2015
Released: July 05, 2015
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A novel dinuclear iron(II) complex [{Fe(py
3COH)(NCS)(μ-NCS)}
2](PrOH)
2 was prepared. Each Fe ion is coordinated with three N atoms from tridentate tris(2-pyridyl)methanol (py
3COH) and two N and one S atoms from NCS
− coligand. It showed a one-step gradual spin-crossover at
T1/2 = 207 K. This compound is the first spin-crossover material having an FeN
5S coordination structure.
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Jong Young Yoo, Young Ho Park, Sung Young Park, Insik In
2015 Volume 44 Issue 7 Pages
922-924
Published: July 05, 2015
Released: July 05, 2015
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Biotinylated chemically reduced graphene oxide was prepared by covalent functionalization and the chemical reduction of graphene oxide using poly(allylamine) and the biotinylation reaction, which shows high binding affinity for streptavidin, a model protein.
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Gang Wang, Yue-Hong Zhu, Guang-Gai Zhou, Wei-Liang Liu, Xian Zhang, Xi ...
2015 Volume 44 Issue 7 Pages
925-927
Published: July 05, 2015
Released: July 05, 2015
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In this paper, fluorescent hollow silica nanoparticles (FHSNs) have been used for the detection of hypochlorite by monitoring fluorescence intensity changes. The fluorescent and sensing properties of the FHSNs were dramatically improved compared to those of the corresponding free probes. With unique hollow structure and strong fluorescence, the FHSNs have potential applications in the fields of biology and medicine.
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Jian Jiao, Jing Cao, Pan P. Lv
2015 Volume 44 Issue 7 Pages
928-930
Published: July 05, 2015
Released: July 05, 2015
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Large-pore mesoporous silica (MSU-J) with wormhole framework structure was prepared and modified with triethylenetetramine (TETA) by wet-impregnation. It was used as adsorbent for CO
2. The hydrolyzing mesoporous silica was prepared by boiling the MSU-J in distilled water. CO
2 adsorption capacity was investigated at different temperatures and TETA loadings. The results showed that adsorption capacity decreased with increase of adsorption temperature. Increase of TETA content increased CO
2 adsorption. Repeated adsorption/desorption cycles showed that amine-impregnated materials were efficient in CO
2 adsorption.
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Takuro Niidome, Masanori Fujii, Naotoshi Nakashima, Yoshiki Katayama, ...
2015 Volume 44 Issue 7 Pages
931-933
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 17, 2015
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Gold nanorods were intravenously injected into tumor-bearing mice. The distribution of gold in tumor-tissue sections was mapped by imaging mass spectrometry (IMS) using a MALDI mass spectrometer. The IMS images of tumor-tissue sections indicated that the gold nanorods were not distributed throughout tumor tissues but were localized in vasculature-rich areas.
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Kazuhiko Maeda
2015 Volume 44 Issue 7 Pages
934-936
Published: July 05, 2015
Released: July 05, 2015
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A rutile TiO
2 powder coated on a conductive glass by a simple squeegee method, functions as a water-oxidation photoanode in a neutral aqueous solution (pH 5.9) even at <0 V
RHE. Under AM1.5G irradiation with an applied potential greater than +0.6 V vs. a Pt cathode, stoichiometric H
2/O
2 evolution was achieved, with nearly 100% Faradaic efficiency.
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Shuhei Okumura, Masayoshi Ushio, Akina Oishi, Keiko Nishikawa, Takeshi ...
2015 Volume 44 Issue 7 Pages
937-939
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 23, 2015
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The density of ionic liquid (IL) + CO
2 systems was measured by X-ray absorption method and excess molar volume was evaluated to investigate the volumetric behavior under a CO
2 absorption process up to 20 MPa. A V-shaped density plot was observed, and three types of expanded/compressed trends were classified based on the excess molar volume of the IL. The volumetric behavior of the IL strongly depends on the CO
2 amount absorbed in the IL’s cavities.
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Zhong-Gang Liu, Xing Chen, Zheng Guo, Jin-Huai Liu, Xing-Jiu Huang
2015 Volume 44 Issue 7 Pages
940-942
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 23, 2015
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Molybdenum oxide (MoO
x) was electrochemically deposited onto the surface of a Au microwire electrode in a simple manner. The MoO
x-Au microwire electrode exhibited effective and sensitive determination of As(III) under mild conditions. No obvious interference from Cu(II) on the determination of As(III) was observed since the response of Cu(II) appeared at a more positive potential.
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Tao Jin, Fan-mei Kong, Rui-qin Bai
2015 Volume 44 Issue 7 Pages
943-945
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 23, 2015
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Density functional theory is used to optimize the minimum conformers of the lowest generation (G0) ethyl (CH
2CH
3)-terminated poly(amidoamine) (PAMAM) dendrimers with UB3LYP/6-31++G** methods in the gas phase. The obtained a, b, c, and d conformers are the most stable, and all the secondary amide groups are in the trans-position except for the a conformer. The terminal group rotation, the intramolecular hydrogen bonding, and interbranch interactions all minimize the energy of the conformers. The IR spectra of the lowest energy conformers of PAMAM-CH
2CH
3 are also studied.
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Ryoma Ishidate, Kouhei Shimomura, Tomoyuki Ikai, Shigeyoshi Kanoh, Kat ...
2015 Volume 44 Issue 7 Pages
946-948
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 23, 2015
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An optically inactive poly(biphenylylacetylene) bearing an ester group at the 4′-position of the pendants formed a preferred-handed helical conformation and biased axial chirality in the pendants through a noncovalent interaction with a chiral alcohol, both of which were retained (memorized) even after removal of the chiral alcohol. The chiral stationary phase for high-performance liquid chromatography, prepared by coating the polymer with macromolecular helicity memory on silica gel, showed good chiral recognition ability towards various racemates.
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Yixin Zhang, Wujun Liu, Muhammad Sohail, Xueying Wang, Yuxue Liu, Zong ...
2015 Volume 44 Issue 7 Pages
949-951
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 25, 2015
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Enzymatic allylation of catechols was realized via catechol
O-methyltransferase (COMT) using an allylated
S-adenosyl-
L-methionine (allyl-SAM) analog, with relatively good chemo- and regioselectivities. This new reaction offered an alternative procedure for allylation of catechols, which can be expanded as a biocatalytic allylation method in organic synthesis.
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Jian Zhang, Jiamin Wang, Weili Zhao, Xiaochun Dong
2015 Volume 44 Issue 7 Pages
952-954
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 29, 2015
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A new BODIPY-based near-infrared (NIR) fluorescent probe, based on the deprotection of dithioacetal, has been developed, with good selectivity for Hg
2+. The proposed sensing mechanism was supported by
1H NMR studies. Moreover, the probe was successfully applied to the fluorescence imaging of Hg
2+ in Human Hepatoma SMMC-7721 cells under physiological conditions.
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Yuriko Takayama, Eri Nasuno, Ken-ichi Iimura, Tomohiro Morohoshi, Nori ...
2015 Volume 44 Issue 7 Pages
955-957
Published: July 05, 2015
Released: July 05, 2015
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Quartz crystal microbalance measurements suggest that a quorum-sensing LuxR homolog receptor SpnR in
Serratia marcescens AS-1 dissociates from
spn box after complexation with
N-hexanoylhomoserine lactone (C6HSL). After reaching quorum of cells on increasing the C6HSL concentration, forming stable SpnR–C6HSL complex probably leads to conformational changes in the DNA-binding domain, and its binding constant reduces by one order after complexation. The interaction analyses of immobilized
spn box on a gold electrode with additive SpnR clearly shows the negative regulation for
spn operon.
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Takahiro Kono, Yosei Shibata, Zhiping Wang, Tetsuhiko Miyadera, Yuji Y ...
2015 Volume 44 Issue 7 Pages
958-960
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 17, 2015
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Two novel p-type materials, Cz(Et)ThOM and Cz(Et)OM—respectively with and without a thiophene π-spacing unit—have been synthesized for vacuum-deposited organic photovoltaics (OPVs). The power conversion efficiencies of planar heterojunction OPVs of the former are clearly higher than that of the latter. Further improvement of the device with Cz(Et)ThOM was obtained by employing bulk heterojunction structure and post-annealing. The structural analysis of thin films by synchrotron X-ray diffraction and atomic force microscopy shows that this improvement is due to Cz(Et)ThOM becoming highly ordered during annealing.
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Hikaru Sotome, Yosuke Azuma, Sho Asami, Shin-ichi Matsushima, Shinji K ...
2015 Volume 44 Issue 7 Pages
961-963
Published: July 05, 2015
Released: July 05, 2015
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Gold nanostructures deposited on mica were excited with 400-nm sub-ps light pulses. Sub-ps transient absorption spectroscopy showed that excited hot electrons in the gold nanostructures decayed with a time constant of 13 ps through electron–phonon coupling in the nanostructures. Sub-ps time-resolved X-ray diffraction revealed that the (0010) mica lattice constant in a 1.7 µm thick surface layer expanded with a time constant of 6 ps.
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Junpei Miyake, Masaki Saito, Ryo Akiyama, Masahiro Watanabe, Kenji Miy ...
2015 Volume 44 Issue 7 Pages
964-966
Published: July 05, 2015
Released: July 05, 2015
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A rigid, planar dibenzofuran in the hydrophobic parts provided sulfonated aromatic block copolymer with improved membrane properties, i.e., well-developed phase separation, effective water uptake, high proton conductivity, and moderate mechanical strength at wide range of humidity.
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Tomoya Miura, Qiang Zhao, Yuuta Funakoshi, Masahiro Murakami
2015 Volume 44 Issue 7 Pages
967-969
Published: July 05, 2015
Released: July 05, 2015
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A thermal reaction of 4-(
p-aminophenyl)-1-sulfonyl-1,2,3-triazoles forming benzoyl cyanides is reported. A carbene species thermally generated from the triazole by denitrogenation undergoes intramolecular oxygen migration from sulfur to carbon, giving an
N-sulfinyl benzoylimine intermediate. The subsequent Cope-type elimination of the sulfinyl group gives rise to cyano functionality.
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Naoki Hamao, Junji Akimoto
2015 Volume 44 Issue 7 Pages
970-972
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: May 01, 2015
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A tetragonal garnet-type Li
7La
3Zr
2O
12 sample was synthesized by the coprecipitation method for the first time. The particle morphology of the Li
7La
3Zr
2O
12 sample prepared by the coprecipitation method was elliptical shape and the primary grain size was smaller than the Li
7La
3Zr
2O
12 sample prepared by the conventional solid-state method. The result of the particle size distribution measurement shows that the average secondary particle size was approximately 9.66 µm, even after calcination at 950 °C with a relatively narrow distribution.
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Hideki Kato, Tsuyoshi Fujisawa, Makoto Kobayashi, Masato Kakihana
2015 Volume 44 Issue 7 Pages
973-975
Published: July 05, 2015
Released: July 05, 2015
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Novel delafossite-type compounds Cu(Li
1/3Ti
2/3)O
2 with 3R- and 2H-type structures have been discovered through the reaction between Li
4Ti
5O
12 and Cu
2O. Cu(Li
1/3Ti
2/3)O
2 is the first Cu(I)-titanate containing no d
n (
n = 1–9) metal ions. It has been found that Cu(Li
1/3Ti
2/3)O
2 with a band gap of 2.1 eV functions as a photocatalyst for H
2 evolution under visible light irradiation.
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Yuki Saito, Yasuhiro Yamashita, Shū Kobayashi
2015 Volume 44 Issue 7 Pages
976-977
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: May 09, 2015
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Zinc bis[bis(trimethylsilyl)amide] (Zn(HMDS)
2) was found to be an efficient Lewis acid/Brønsted base cooperative catalyst for the direct alkynylation of nitrones. The activity of Zn(HMDS)
2 was shown to be higher than that of other Zn species such as Zn(OTf)
2-
iPr
2NEt and ZnEt
2.
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Shinji Toyota, Tomohiro Oki, Masataka Inoue, Kan Wakamatsu, Tetsuo Iwa ...
2015 Volume 44 Issue 7 Pages
978-980
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: May 09, 2015
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An anthracene–acetylene cyclic dimer with an intra-annular ethyl group was synthesized as a sterically congested π-conjugated compound by cyclization with Sonogashira coupling. The ethyl group was conformationally cramped by the rigid macrocyclic framework because of the severe steric interactions, as revealed by
1H NMR spectroscopy and DFT calculation.
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Takeshi Ito, Nobuyoshi Aoki, Akihisa Tsuchiya, Satoru Kaneko, Koji Suz ...
2015 Volume 44 Issue 7 Pages
981-983
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: May 12, 2015
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Quantitative detection of food allergen is placed considerable emphasis in food factories all over the world. We proposed a quartz crystal microbalance (QCM) method coupled with a passive flow system for the analysis of β-lactoglobulin, as an example. Analytical curves for a passive were comparable on an active flow system, and 1 ppm of β-lactoglobulin was detected. Repeatable detection was achieved by the regeneration of the sensor surface. One detection cycle was completed within 13 min. This proposed system can be used for quantitative analysis without professional skills, only by dropping a liquid sample.
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Kanji Kubo, Yuichiro Moriyama, Seiji Ujiie, Akira Mori
2015 Volume 44 Issue 7 Pages
984-986
Published: July 05, 2015
Released: July 05, 2015
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As a new liquid crystalline organogelator, tris[4-(benzoylamino)phenyl]amine derivatives were synthesized. Tris[4-(benzoylamino)phenyl]amine derivatives with six or nine alkoxy groups exhibited an enantiotropic hexagonal columnar phase. Furthermore tris[4-(benzoylamino)phenyl]amine derivatives gelled organic liquids such as
n-hexane, decane, hexadecene, ethanol, 1-hexanol, 1-decanol, chloroform, toluene, salad oil, limonene, linalool, nerol, citronellol, linalyl acetate, lemon oil, lavender oil, orange oil, and rose oil. The terpene gels show good release of the volatile components over a long period.
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Hui-fang Li, Li-juan Li, Dong Shi, Jin-feng Li, Lian-min Ji, Xiao-wu P ...
2015 Volume 44 Issue 7 Pages
987-988
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: March 21, 2015
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The recovery of lithium resources from salt lake brine has become more and more important. Tri-
n-butyl phosphate (TBP) is the most common extractant and has good ability to selectively extract lithium, thus, basic research on it should be carried out. In this study, the kinetics of lithium extraction by TBP in salt lake brine was investigated at 298.15 K via a single rising drop technique. Parameters affecting the mass transfer mechanism, including the interfacial area, lithium concentration, iron concentration, TBP concentration, and temperature were studied. According to this research, we found that the process of extraction is controlled by the diffusion and the chemical reaction occurs at the interfacial area. The mechanism of the lithium extraction with TBP is revealed.
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Yuanchun Du, Sen Yang, Huanhuan Li, Shu Chen, Jiawen Hu
2015 Volume 44 Issue 7 Pages
989-991
Published: July 05, 2015
Released: July 05, 2015
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Particle-dressed, SiO
2 shell-isolated cavity architectures were fabricated. These architectures, owing to their structured surface and substantial hot spots created by particle–cavity interaction, showed reproducible, improved surface-enhanced Raman scattering activity relative to Au nanoparticles immobilized on a glass slide.
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Jiaji Han, Dongliang Liu
2015 Volume 44 Issue 7 Pages
992-994
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 23, 2015
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Pores of ca. 11 nm size were created in ZSM-5 zeolite crystals by a novel double-acyloxy amphiphilic organosilane surfactant as a mesopore-directing template. The zeolite crystals had a platelet-like morphology and sponge-like surface. The morphology of the obtained zeolites was compared with conventional zeolite synthesized by the same procedure except for the absence of the double-acyloxy organosilane surfactant.
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Munenori Numata, Akiko Sato, Rie Nogami
2015 Volume 44 Issue 7 Pages
995-997
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 25, 2015
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Energy-dissipative self-assembly in microflow enables us to approach an energetically unstable self-assembled structure, which undergoes morphological transition in a cascade manner from fibers, sheets, and finally “running down” to thermodynamically stable dots, with switching intermolecular interactions.
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Shuhei Nishinaga, Hiroki Mori, Yasushi Nishihara
2015 Volume 44 Issue 7 Pages
998-1000
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 29, 2015
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Organic field-effect transistor (OFET) characteristics of phenanthrodithiophene (PDT)–isoindigo (IID) copolymers with different alkyl chains (
12OD and
BOBO) as an active layer, and their structure–property relationships are described. The fabricated
12OD-based OFET device exhibited hole mobility of 0.16 cm
2 V
−1 s
−1. Grazing-incidence wide-angle X-ray scattering (GIWAXS) analysis revealed that
12OD formed highly ordered edge-on structure, whereas the
BOBO film showed amorphous-like structure with no obvious π-stacking crystallites. This may be attributed to a large steric hindrance of branched side chains in the
BOBO polymer, which suppresses effective π–π overlaps between the adjacent polymer backbones.
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Akitoshi Nakamura, Osamu Tomita, Masanobu Higashi, Saburo Hosokawa, Ts ...
2015 Volume 44 Issue 7 Pages
1001-1003
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: May 09, 2015
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Fine particles of calcium niobate Ca
2Nb
2O
7 with diameters of 200–300 nm were prepared via combination of solvothermal synthesis and post-calcination; the obtained Ca
2Nb
2O
7 particles with orthorhombic phase showed much higher activity for photocatalytic water-splitting under UV light irradiation than those prepared via other conventional synthesis methods.
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Takahito Mitome, Yoshiaki Uchida, Norikazu Nishiyama
2015 Volume 44 Issue 7 Pages
1004-1006
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: May 12, 2015
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New nanoporous carbons were prepared by carbonization of resorcinol–formaldehyde–Pluronic F127 composite in the presence of KOH. The obtained nanoporous carbon possesses 2.4-nm mesopores and high surface area of 3277 m
2 g
−1. The obtained nanoporous carbon showed a high CO
2 adsorption capacity of 6.2 mmol g
−1 at 273 K and 745 mmHg because of such high surface area and nanopores larger than 1 nm in size.
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Aya Murakami, Katsunori Yamanishi, Eriko Sone, Mitsuru Kondo
2015 Volume 44 Issue 7 Pages
1007-1009
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: May 13, 2015
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Four new Co(II)-coordination polymers have been prepared from treatments of a Co
II source with bis[2-(1
H-imidazol-1-yl)ethyl]ether (bie) or 1,5-bis(1
H-imidazol-1-yl)pentane (bipen), which are bis-imidazole-type ligands with hydrophobic polymethylene units. Structural characterizations have shown that their compounds create hydrophobic cavities for anions in their cationic 3D coordination frameworks. The self-assembled construction of the frameworks in aqueous solutions containing various inorganic anions trapped perchlorate ion selectively in the cavities. Because the product is insoluble in water, perchlorate ion was selectively removed from the aqueous solutions.
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Mizuho Kondo, Yukihiro Inoue, Yuki Koeduka, Masahiro Funahashi, Akira ...
2015 Volume 44 Issue 7 Pages
1010-1012
Published: July 05, 2015
Released: July 05, 2015
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Two types of phenylenevinylene terthiophene with and without cyano side substitution were synthesized to investigate the effect of the molecular structure on optoelectronic properties. The oligothiophene with cyano side substitution exhibited large bathochromic effect and behaved as organic electron acceptors with decrease in field effect conductivity due to increase in dipole moment.
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Yoshinori Otaki, Yu Miyagi, Fumio Sanda
2015 Volume 44 Issue 7 Pages
1013-1015
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 17, 2015
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The Sonogashira–Hagihara coupling polymerization of
L-alanine-derived 2,5-dibromothiophene monomers
1a–
1d with
p- and
m-diethynylbenzenes
2p and
2m gave novel optically active poly(thiophenyleneethynylene-phenyleneethynylene)s poly(
1a-
2p)–poly(
1d-
2m).
p-Phenylene-linked poly(
1b-
2p)–poly(
1d-
2p) bearing amide-amide side chains exhibited CD signals based on chiral aggregates, while the
m-phenylene-linked counterparts poly(
1b-
2m)–poly(
1d-
2m) exhibited no evidence of the formation of secondary structures. Poly(
1a-
2p) and poly(
1a-
2m) bearing amide-ester side chains exhibited no CD signal as well.
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Izumi Kumakiri, Takatoshi Okamoto, Takuya Murao, Kazuhiro Tanaka, Hide ...
2015 Volume 44 Issue 7 Pages
1016-1018
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: April 23, 2015
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Titanium dioxide-based solid sorbents were applied for CO
2 capture over 400 °C. Novel reaction route for CO
2 capture by Ba
2TiO
4 is identified. Due to the contribution of a mechanism alternative to what has previously been reported, higher CO
2 capture ability has been achieved.
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Kotaro Kikushima, Hironobu Sakaguchi, Hiroki Saijo, Masato Ohashi, Sen ...
2015 Volume 44 Issue 7 Pages
1019-1021
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: May 01, 2015
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We developed the copper-mediated synthesis of trifluorostyrene derivatives. β-Fluorine elimination of a 2-aryl-1,1,2,2-tetrafluoroethylcopper complex, generated in situ from arylboronate, copper
tert-butoxide, and 1,10-phenanthroline with tetrafluoroethylene (TFE) via carbocupration, was promoted by the addition of a Lewis acid. The present reaction system was applied to the one-pot synthesis of various trifluorostyrene derivatives, through the transmetalation–carbocupration–β-fluorine elimination sequence.
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Shude Zhang, Xiaomin Li, Xiangdong Gao, Lei Lei, Xukun Ding, Qianqian ...
2015 Volume 44 Issue 7 Pages
1022-1024
Published: July 05, 2015
Released: July 05, 2015
[Advance publication] Released: May 09, 2015
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A one-step deposition method was adopted to form the organic–inorganic mixed halide perovskite (CH
3NH
3PbI
3−xCl
x) on compact ZnO in order to study the effect of annealing temperature on perovskite film morphology and photovoltaic performance of solar cells. In contrast to the reported results, the perovskite begins to decompose at a pretty low temperature of 70 °C. Through careful temperature modulation, we achieved a fairly high efficiency of 9.28%.
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