研究者詳細 - 田嶋　智之

論文 - 田嶋　智之

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Preparation and Optical and Electrochemical Properties of Phthalocyanines with the Ttf Unit 査読

Takeshi Kimura, Nobuhiro Takahashi, Tomoyuki Tajima, Yutaka Takaguchi

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS 188 ( 4 ) 408 - 412 2013年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：TAYLOR & FRANCIS LTD

Tetrathiafluvalene (TTF)-annulated symmetrical and unsymmetrical phthalocyanines (4), (5), and (6) were prepared from 3,6-dioctylphthalonitrile (1) with a TTF unit, 4,5-dioctyloxyphthalonitrile (2), and 3,6-dioctyloxyphthalonitrile (3). Tetra-TTF-annulated phthalocyanine (4) and iodine produced an electron transfer complex which showed a radical cationic character.

DOI： 10.1080/10426507.2012.729115

Photosensitized hydrogen evolution from water using single-walled carbon nanotube/fullerodendron/Pt(II) coaxial nanohybrids 査読

Yukari Sasada, Tomoyuki Tajima, Takaaki Wada, Tetsuya Uchida, Masayasu Nishi, Takahiro Ohkubo, Yutaka Takaguchi

NEW JOURNAL OF CHEMISTRY 37 ( 12 ) 4214 - 4219 2013年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ROYAL SOC CHEMISTRY

Direct incorporation of a Pt(II) complex into the shell of SWCNT/fullerodendron coaxial nanohybrids produces a new coaxial nanowire, SWCNT/fullerodendron/Pt(II), that shows efficient photocatalytic activity for hydrogen evolution from water (Phi = 0.16 upon irradiation at 450 +/- 5 nm) without any aid of electron relay such as methyl viologen.

DOI： 10.1039/c3nj00790a

Template-free fabrication of a cylindrical macropore array in SnO2 査読

Yushi Ozawa, Tomoyuki Tajima, Masayasu Nishi, Takahiro Ohkubo, Yutaka Takaguchi

RSC ADVANCES 3 ( 45 ) 22949 - 22952 2013年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ROYAL SOC CHEMISTRY

A simple sol-gel condensation of tin(IV) tert-butoxide led to the formation of meso/macroporous membranes. SEM observation clearly shows the cylindrical macropore array, of which mean pore diameter is controllable between 200 and 800 nm. The existence of slit-shaped mesopores (12 nm) was confirmed by a N-2 adsorption-desorption experiment.

DOI： 10.1039/c3ra43642j

alpha-SUBSTITUTED UNSYMMETRICAL PHTHALOCYANINES WITH ONE THROUGH THREE TTF UNITS AND THEIR OPTICAL AND ELECTROCHEMICAL PROPERTIES 査読

Takeshi Kimura, Nobuhiro Takahashi, Tomoyuki Tajima, Yutaka Takaguchi

HETEROCYCLES 86 ( 1 ) 679 - 686 2012年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD

alpha-Substituted unsymmetrical phthalocyanines fused with one through three TTF units were prepared from mixed 3,6-dioctyloxyphthalonitrile and 3,6-dioctylphthalonitrile bearing a TTF unit. The optical and electrochemical properties of the products were determined by UV-vis spectroscopy and cyclic voltammetry. Mono-TTF-annulated phthalocyanine and iodine produced the electron transfer complex which showed the radical cationic character.

DOI： 10.3987/COM-12-S(N)18

Synthesis and Characterization of 2,3,9,10-Tetradendronized Pentacene 査読

Tomoyuki Tajima, Akio Yamakawa, Keitaro Fukuda, Yuuki Hayashi, Masahiko Nakano, Yutaka Takaguchi

CHEMISTRY LETTERS 41 ( 12 ) 1622 - 1624 2012年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：CHEMICAL SOC JAPAN

A new pentacene dendrimer was synthesized in 81% yield through the aromatization of a dihydropentacene derivative having benzyl ether dendrons at the C2, C3, C9, and C10 positions. The dendrimer is very soluble in various organic solvents such as toluene, benzene, chloroform, dichloromethane, acetone, and ethyl acetate. The half-life of the dendrimer reaches 22.4 min upon photoirradiation in air. Interestingly, regiospecific [4 + 2] cycloaddition reactions proceeded at the central ring of the pentacene.

DOI： 10.1246/cl.2012.1622

Proton nuclear magnetic resonance and pattern recognition analysis of liver extracts from rats under different anesthetics 査読国際誌

Tajima Tomoyuki, Hirakawa Keiko, Kawaguchi Hiroshi, Sakamoto Atsuhiro

BMC MEDICAL IMAGING 12 28 - 28 2012年8月

Factors affecting reproduction in rehabilitant female orangutans: young age at first birth and short inter-birth interval 査読

Kuze Noko, Dellatore David, Banes Graham L, Pratje Peter, Tajima Tomoyuki, Russon Anne E

PRIMATES 53 ( 2 ) 181 - 192 2012年4月

Molecular Structure and Electronic State of the Dibenzo[a,e]pentalene Anion Radical 査読国際誌

Masaichi Saito, Yoko Hashimoto, Tomoyuki Tajima, Kazuya Ishimura, Shigeru Nagase, Mao Minoura

CHEMISTRY-AN ASIAN JOURNAL 7 ( 3 ) 480 - 483 2012年3月

PREPARATION AND OPTICAL AND ELECTROCHEMICAL PROPERTIES OF UNSYMMETRICAL PHTHALOCYANINES WITH ONE OR TWO TTF UNITS 査読

Takeshi Kimura, Nobuhiro Takahashi, Tomoyuki Tajima, Yutaka Takaguchi

HETEROCYCLES 84 ( 1 ) 333 - 337 2012年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD

Unsymmetrical phthalocyanines with one or two TTF units were obtained by treating mixed 3,6-dioctyltetrathiafluvalenophthalonitrile and 4,5-dioctoxyphthalonitrile with Li in n-hexanol. Their optical and electrochemical properties were examined by UV-vis spectroscopy and cyclic voltammetry.

DOI： 10.3987/COM-11-S(P)42

Synthetic analogues of [Fe4S4(Cys)(3)(His)] in hydrogenases and [Fe4S4(Cys)(4)] in HiPIP derived from all-ferric [Fe4S4{N(SiMe3)(2)}(4)] 査読国際誌

Yasuhiro Ohki, Kazuki Tanifuji, Norihiro Yamada, Motosuke Imada, Tomoyuki Tajima, Kazuyuki Tatsumi

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 108 ( 31 ) 12635 - 12640 2011年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：NATL ACAD SCIENCES

The all-ferric [Fe4S4](4+) cluster [Fe4S4{N(SiMe3)(2)}(4)] 1 and its one-electron reduced form [1](-) serve as convenient precursors for the synthesis of 3:1-site differentiated [Fe4S4] clusters and high-potential iron-sulfur protein (HiPIP) model clusters. The reaction of 1 with four equivalents (equiv) of the bulky thiol HSDmp (Dmp= 2,6-(mesityl)(2)C6H3, mesityl =2,4,6-Me3C6H2) followed by treatment with tetrahydrofuran (THF) resulted in the isolation of [Fe4S4(SDmp)(3)(THF)(3)] 2. Cluster 2 contains an octahedral iron atom with three THF ligands, and its Fe(S)(3)(O)(3) coordination environment is relevant to that in the active site of substrate-bound aconitase. An analogous reaction of [1](-) with four equiv of HSDmp gave [Fe4S4(SDmp)(4)](-) 3, which models the oxidized form of HiPIP. The THF ligands in 2 can be replaced by tetramethyl-imidazole (Me(4)Im) to give [Fe4S4(SDmp)(3)(Me(4)Im)] 4 modeling the [Fe4S4 (Cys)(3)(His)] cluster in hydrogenases, and its one-electron reduced form [4](-) was synthesized from the reaction of 3 with Me(4)Im. The reversible redox couple between 3 and [3](-) was observed at E-1/2=-820 mV vs. Ag/Ag+, and the corresponding reversible couple for 4 and [4](-) is positively shifted by +440 mV. The cyclic voltammogram of 3 also exhibited a reversible oxidation couple, which indicates generation of the all-ferric [Fe4S4](4+) cluster, [Fe4S4(SDmp)(4)].

DOI： 10.1073/pnas.1106472108

デンドリマー型置換基を持つ光反応性分子の合成と性質査読

高口豊, 田嶋智之

有機合成化学協会誌 69 ( 6 ) 705 - 714 2011年6月

Synthesis of Poly(amidoamine) Dendrimer with a Diphenyl Diselenide Core 査読

Tomoyuki Tajima, Yukie Yamaguchi, Yo-hei Shiomoto, Yutaka Takaguchi

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS 186 ( 1 ) 2 - 11 2011年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：TAYLOR & FRANCIS LTD

We succeeded in the synthesis of a novel poly(amidoamine) dendrimer having diphenyl diselenide at the core. Modification of the dendrimer diselenide by the reaction with glucono--lactone in methanol gave a water-soluble dendrimer diselenide having chiral terminal groups. The structures of dendrimers were satisfactorily confirmed by MAIDI-TOF MS spectrometry, elemental analysis, and NMR spectroscopy. Interestingly, induced circular dichroism (ICD) of the interaction between the diphenyl diselenide core and D-gluconamide periphery of the dendrimer was observed at 300 nm. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. GRAPHICAL ABSTRACT[image omitted].

DOI： 10.1080/10426501003767102

Optically pure fullerodendron formed by diastereoselective Diels-Alder reaction 査読

Nobuhiro Takahashi, Tomoyuki Tajima, Naoki Tsugawa, Yutaka Takaguchi

TETRAHEDRON 66 ( 39 ) 7787 - 7793 2010年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD

The Diels-Alder reaction between C(60) and anthryl glycodendron, which has D- or L-gluconamides at the terminals, gave a new fullerene glycodendron conjugate. Interestingly, the diastereoselective cycloaddition reaction proceeded upon the treatment of C60 with the anthryl dendron 3. Furthermore, optical pure fullerodendrons (-)-4L and (+)-4D, which were confirmed by (1)H and (13)C NMR spectroscopy, FT-IR, MALDI-TOF mass spectroscopic analysis, were isolated from the mixture of diastereomers. And their absolute configurations were predicted by the use of CD spectra. (C) 2010 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.tet.2010.07.061

1,5-Bis[2,6-bis(2,4,6-triisopropylphenyl)phenyl]-2,3,4,6,7-pentatellura-1,5-distannabicyclo[3.1.1]heptane 査読国際誌

Masaichi Saito, Hizuru Hashimoto, Tomoyuki Tajima

ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE 66 ( Pt 8 ) M885 - U273 2010年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-BLACKWELL PUBLISHING, INC

The title compound, [Sn(2)(C(72)H(98))Te(2)(Te(3))], has a cage-like structure with bulky aryl substituents on the Sn atoms. The molecule sits over a crystallographic twofold axis, and hence the asymmetric unit consists of one half-molecule. Due to the twofold axis, the tritelluride part has a 1:1 disorder. One of the six-membered rings has a boat conformation, whereas the other has a chair conformation. The ditelluradistannane ring has a bent structure, with a dihedral angle of 32.89 (2)degrees between the two Te-Sn-Te planes.

DOI： 10.1107/S1600536810025729

Formation of Pentaorganostannates from Bis(2-bromo-2 '-biphenyl)stannanes and tert-Butyllithium upon Substitution of Alkyl and Aryl Groups on Tin Atoms 査読

Masaichi Saito, Sanae Imaizumi, Tomoyuki Tajima

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY ( 14 ) 2153 - 2157 2010年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-BLACKWELL

The reaction of bis(2-bromo-2'-biphenyl)stannanes 1 with tert-butyllithium in the presence of diaryl- and dialkyldichlorostannanes leads to the extrusion of aryl and alkyl groups on the tin atom, affording 9-stannafluorene derivatives bearing biphenyl groups. The intermediates of the reactions were assigned to the corresponding pentaorganostannates, which were characterized by NMR spectroscopy. Unexpectedly, the dissociation of the aryl and alkyl groups from the tin atoms in intramolecular nucleophilic substitution reactions was preferable to that of chloride ions in intermolecular nucleophilic substitution reactions.

DOI： 10.1002/ejic.201000089

Arching a bay area of triphenyleno[1,12-bcd]thiophene with group 14 functionalities: Synthesis of the first triphenylene derivatives having thiophene and metallafluorene moieties 査読

Masaichi Saito, Tomoharu Tanikawa, Tomoyuki Tajima, Jing Dong Guo, Shigeru Nagase

JOURNAL OF ORGANOMETALLIC CHEMISTRY 695 ( 7 ) 1035 - 1041 2010年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE SA

Arching a bay area of triphenyleno[1,12-bcd]thiophene with group 14 functionalities gave the first triphenylene derivatives whose two pairs of bay carbons are connected by two different heteroatom functionalities. Triphenyleno[1,12-bcd:4,5-b'c'd']dithiophene, which had been only accessible through the very severe reaction conditions, was synthesized under the mild reaction conditions. Photophysical properties of newly-obtained heterolotriphenylene derivatives are discussed with theoretical calculations. (C) 2009 Elsevier B. V. All rights reserved.

DOI： 10.1016/j.jorganchem.2009.11.039

Nonaggressive interventions by third parties in conflicts among captive Bornean orangutans (Pongo pygmaeus). 査読

Tajima T, Kurotori H

Primates; journal of primatology 51 ( 2 ) 179 - 182 2010年4月

Dilithioplumbole: A Lead-Bearing Aromatic Cyclopentadienyl Analog 査読国際誌

Masaichi Saito, Masafumi Sakaguchi, Tomoyuki Tajima, Kazuya Ishimura, Shigeru Nagase, Masahiko Hada

SCIENCE 328 ( 5976 ) 339 - 342 2010年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER ASSOC ADVANCEMENT SCIENCE

Although the concept of aromaticity has long played an important role in carbon chemistry, it has been unclear how applicable the stabilizing framework is to the heaviest elements. Here we report the synthesis of dilithiotetraphenylplumbole by reduction of hexaphenylplumbole. X-ray crystallography revealed a planar structure with no alternation of carbon-carbon bond lengths in the five-membered ring core. Nuclear magnetic resonance spectra and relativistic theoretical calculations show considerable aromatic character in the molecule, thus extending aromaticity to carbon's heaviest congener.

DOI： 10.1126/science.1183648

Synthesis and structures of heterasumanenes having different heteroatom functionalities 査読

Masaichi Saito, Tomoharu Tanikawa, Tomoyuki Tajima, Jing Dong Guo, Shigeru Nagase

TETRAHEDRON LETTERS 51 ( 4 ) 672 - 675 2010年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD

After the protection of two alpha-carbons of the dibenzothiophene moiety in triphenylenothiophene 1 by trimethylsilyl groups, the resulting compound 4 reacted with butyllithium followed by dichlorodimethylsilane to afford 10H-silolo[2',3',4',5':4,5]triphenyleno[1,12-bcd]thiophene 8, which reacted with butyllithium followed by dichlorodimethylsilane to afford novel heterasumanene 11. Using dichlorodimethylstannane instead of dichlorodimethylsilane afforded heterasumanene 12, which is the first example of a heterasumanene having three different heteroatom functionalities. (C) 2009 Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.tetlet.2009.11.102

Formation of Zwitterionic Fullerodendron Using a New DBN-Focal Dendron. 査読国際誌

Yutaka Takaguchi, Maki Hosokawa, Masatoshi Mayahara, Tomoyuki Tajima, Takahiro Sasamori, Norihiro Tokitoh

Sensors 10 ( 1 ) 613 - 624 2010年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：MOLECULAR DIVERSITY PRESERVATION INTERNATIONAL-MDPI

A new poly(amidoamine) dendron having 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) at the focal point was synthesized. Interestingly, formation of zwitterionic fullerodendrons (lambda(max) = 930 nm for C(60) and 795 nm for C(70)) were observed by Vis-NIR spectroscopy upon the reaction of C(60) or C(70) with the DBN-focal dendron. In particular, the C(70) anion was effectively stabilized by the site isolation effect of the dendritic wedge. The half-life of fullerodendron 12b having C(70) anion at the focal point reaches 7,345 min, which is 20 times longer than that of complex between C(60) and pristine DBN. Furthermore, in order to confirm the structure of the zwitterionic complex, fullerodendron 12a was reprecipitated from benzonitrile/1,2,4-trimethylbenzene, and was observed using IR spectroscopy and APPI-MS.

DOI： 10.3390/s100100613

その他リンク： https://dblp.uni-trier.de/db/journals/sensors/sensors10.html#TakaguchiHMTST10

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