Faculty Profiles - KITAMURA Chitoshi

Papers - KITAMURA Chitoshi

Division display61 - 80 of about 91／ All the affair displays >>

1,4,7,10-Tetraisoalkyltetracenes: Tuning of Solid-state Optical Properties and Fluorescence Quantum Yields by Peripheral Modulation Reviewed

1,4,7,10-Tetraisoalkyltetracenes: Tuning of Solid-state Optical Properties and Fluorescence Quantum Yields by Peripheral Modulation

European Journal of Organic Chemistry 3033 - 3040 2010.6

Synthesis, Optical Properties, and Crystal Structure of 1,4-Dipropyltetracene Reviewed

Chitoshi Kitamura, Chika Matsumoto, Akio Yoneda, Takashi Kobayashi, Hiroyoshi Naito, Toshiki Komatsu

European Journal of Organic Chemistry 　 2571 - 2575 2010.5

Pentaleno[1,2-c:4,5-c']dithiophene Derivatives: First Synthesis, Properties, and a Molecular Structure Reviewed

Akihito Konishi, Takeru Fujiwara, Noriko Ogawa, Yasukazu Hirao, Kouzou Matsumoto, Hiroyuki Kurata, Takashi Kubo, Chitoshi Kitamura, Takeshi Kawase

Chemistry Letters 39 300 - 301 2010.3

Synthesis and Crystallochromy of 1,4,7,10-Tetraalkyltetracenes: Tuning of Solid-state Optical Properties of Tetracenes by Alkyl Side-chain Length Reviewed

Chitoshi Kitamura, Yasushi Abe, Takuya Ohara, Akio Yoneda, Takeshi Kawase, Takashi Kobayashi, Hiroyoshi Naito, Toshiki Komatsu

Chemistry A European Journal 16 890 - 898 2010.1

Crystal Structure of anti-1,4,5,8-Tetra-t-butyl-2,3,6,7-tetrahydro-1,4:5,8-diepoxyanthracene Reviewed

Chitoshi Kitamura, Hideki Tsukuda, Takeshi Kawase

X-ray Structure Analysis Online 25 105 - 106 2009.10

Preparation, Crystal Structure, and Solid-state Fluorescence of a CH₂Cl₂-Solvated Crystal of 6,13-Bis(t-butylphenyl)-2,3,9,10-tetrapropoxypentacene Reviewed

Chitoshi Kitamura, Takao Naito, Akio Yoneda, Takashi Kobayashi, Hiroyoshi Naito, Toshiki Komatsu

Chemistry Letters 38 600 - 601 2009.7

Characterization of alkylphenol degradation gene cluster in Pseudomonas putida MT4 and evidence of oxidation of alkylphenols and alkylcatechols with medium-length alkyl chain Reviewed

Masahiro Takeo, Subbuswamy K. Prabu, Chitoshi Kitamura, Makoto Hirai, Hana Takahashi, Dai-ichiro Kato, Seiji Negoro

JOURNAL OF BIOSCIENCE AND BIOENGINEERING 102 ( 4 ) 352 - 361 2006.10

Language：English Publishing type：Research paper (scientific journal) Publisher：SOC BIOSCIENCE BIOENGINEERING JAPAN

Alkylphenols (APs) are ubiquitous contaminants in aquatic environments and have endocrine disrupting and toxic effects on aquatic organisms. To investigate biodegradation mechanisms of APs, an AP degradation gene cluster was cloned from a butylphenol (BP)-degrading bacterium, Pseudomonas putida MT4. The gene cluster consisted of 13 genes named bupBA1A2A3A4A5A6CEH1FG From the nucleotide sequences, bupA1A2A3A4A5A6 were predicted to encode a multicomponent phenol hydroxylase (PH), whereas bupBCEHIFG were expected to encode meta-cleavage pathway enzymes. A partial sequence of a putative NtrC-type regulatory gene, bupR, was also found upstream of the gene bupB. This result indicates that APs can be initially oxidized into alkylcatechols (ACs), followed by the meta-cleavage of the aromatic rings. To confirm this pathway, AP degradation tests were carried out using the recombinant P putida KT2440 harboring the PH genes (bupA1A2A3A4A5A6). The recombinant strain oxidized 4-n-APs with an alkyl chain of up to C7 (<= C7) efficiently and also several BPs including those with an alkyl chain with some degree of branching. Therefore, it was found that PH had a broad substrate specificity for APs with a medium-length alkyl chain (C3-C7). Moreover, the cell extract of a recombinant Escherichia coli harboring bupB (a catechol 2,3-dioxygenase gene) converted 4-n-ACs with an alkyl chain of <= C9 into yellow meta-cleavage products with a maximum absorbance at 379 nm, indicating that the second step enzyme in this pathway is also responsible for the degradation of ACs with a medium-length alkyl chain. These results suggest that MT4 is a very useful strain in the biodegradation of a wide range of APs with a medium-length alkyl chain, which known nonylphenol-degrading Sphingomonas strains have never degraded.

DOI： 10.1263/jbb.102.352

Web of Science

Efficient synthesis and crystal structure of new 1,4-ansa-anthraquinone Reviewed

Chitoshi Kitamura, Jun Fujimoto, Nobuhiro Kawatsuki, Akio Yoneda

HETEROCYCLES 68 ( 10 ) 2171 - + 2006.10

Photoinduced orientation in photo-cross-linkable liquid crystalline polymer film containing tolane moiety

N Kawatsuki, Y Fujii, C Kitamura, A Yoneda

CHEMISTRY LETTERS 35 ( 1 ) 52 - 53 2006.1

Language：English Publishing type：Research paper (scientific journal) Publisher：CHEMICAL SOC JAPAN

Photoinduced orientation of a new photo-cross-linkable liquid crystalline polymer film comprising a 4-methoxycinnamoyloxy group connected with a tolane moiety (PMCT6M) is presented. High molecular reorientation order with a biref"ringence value of 0.27 is achieved by exposing the film to linearly polarized ultraviolet light and subsequent annealing. The required degree of the photoreaction for the effective reorientation is 2-5 mol%. Small amount of photo-cross-linked mesogenic groups controls the thermal enhancement of the molecular reorientation.

DOI： 10.1246/cl.2006.52

Web of Science

Crystal structure of another polymorph of 1,4-anthraquinone Reviewed

Chitoshi Kitamura, Nobuhiro Kawatsuki, Akio Yoneda

Analytical Sciences: X-ray Structure Analysis Online 22 ( 12 ) x293 - x294 2006

Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Society for Analytical Chemistry

The crystal structure of another polymorph of 1,4-anthraquinone was determined. The compound crystallizes in monoclinic, space group P21/n with a = 7.301(1), b = 9.674(2), c = 13.831(2)Å, β = 93.175(8)Å, V = 975.5(3)Å3, Z = 4. There is antiparallel π-π stacking between aromatic rings. The packing arrangement is different from another crystal structure for 1,4-anthraquinone (space group P21/b with a = 8.430(1), b = 19.846(2), c = 5.927(1)Å, γ = 100.21(2)°, CCDC code: COBBIE04). 2006 © The Japan Society for Analytical Chemistry.

DOI： 10.2116/analscix.22.x293

Scopus

Crystal structure of 5,12-diphenyltetracene Reviewed

Chitoshi Kitamura, Chika Matsumoto, Nobuhiro Kawatsuki, Akio Yoneda, Takashi Kobayashi, Hiroyoshi Naito

Analytical Sciences: X-ray Structure Analysis Online 22 ( 1 ) x5 - x6 2006

Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Society for Analytical Chemistry

The crystal structure of 5,12-diphenyltetracene was determined. The compound crystallizes in triclinic form, space group P 1 with a = 8.936(3), b = 11.527(4), c = 11.643(5)Å, α = 112.84(2), β = 107.24(2)o, γ = 64.41(2)o, V = 984.8(6)Å3, Z = 2. The tetracene backbone is not planar but takes a some what twisted conformation. There is π-π stacking between the tetracene moieties. 2006 © The Japan Society for Analytical Chemistry.

DOI： 10.2116/analscix.22.x5

Scopus

Synthesis and Photoinduced Alignment of Photo-cross-linkable Copolymer Liquid Crystals Containing Tolane Side Groups Reviewed

Yuki Kitani, Chitoshi Kitamura, Akio Yoneda, Nobuhiro Kawatsuki

Mol. Cryst. Liq. Cryst. 443 181 - 189 2005

Crystal structure of (1,3-butadiyne-1,4-diyl)-4,4′-bis[7-(3-n-hexyl-2- thienyl)ethynyl-2,1,3-benzothiadiazole] Reviewed

Chitoshi Kitamura, Kakuya Saito, Nobuhiro Kawatsuki, Akio Yoneda, Yoshiro Yamashita

Analytical Sciences: X-ray Structure Analysis Online 21 ( 10 ) x155 - x156 2005

Language：English Publishing type：Research paper (scientific journal) Publisher：Japan Society for Analytical Chemistry

The title compound, C40H34N4S4, crystallizes in the monoclinic system, space group C2/c. The cell parameters are a = 29.888(3)Å, b = 5.1829(5)Å, c = 22.511(2)Å, β = 93.686(5)°, V = 3479.9(5)Å3, and Z = 4. The final R value is 0.056. The molecule, half of which is crystallographically independent, is almost planar and has a transoid-configuration. 2005 © The Japan Society for Analytical Chemistry.

DOI： 10.2116/analscix.21.x155

Scopus

Syntheses and Cation-Binding Abilities of Thiacalix[4]arene Derivative Reviewed

Mikio Ouchi, Tetsuji Mizuno, Tomoyuki Maeda, Nobuhide Ebashi, Chitoshi Kitamura, Akio Yoneda, Mauro Mocerino

Dev. Chem. Eng. Mineral Process. 11 529 - 538 2003

Crystal Structure of 1,4-Dimethoxyanthracene Reviewed

Chitoshi Kitamura, Jun Fujimoto, Mikio Ouchi, Akio Yoneda

Anal. Sci 19 X69 - X70 2003

Optical control of magnetic order in molecule-based magnet Mn(TCNE)(x)center dot y(CH2Cl2) Reviewed

DA Pejakovic, C Kitamura, JS Miller, AJ Epstein

JOURNAL OF APPLIED PHYSICS 91 ( 10 ) 7176 - 7178 2002.5

Language：English Publishing type：Research paper (scientific journal) Publisher：AMER INST PHYSICS

Studies of photoinduced magnetization and photoinduced absorption in molecule-based magnet Mn(TCNE)(x).y(CH2Cl2) (xapproximate to2, ysimilar to0.8, TCNE=tetracyanoethylene) are reported. Optical excitation in the blue region of spectrum leads to increased magnetization, accompanied by changes in the electronic spectrum. These effects are preserved long after illumination, indicating formation of a highly metastable electronic state. Partial reversal of the photoinduced effects is obtained by excitation with lower energy visible light. The results suggest that the photoinduced effects are controlled by two distinct electronic transitions. (C) 2002 American Institute of Physics.

DOI： 10.1063/1.1452704

Web of Science

Photoinduced magnetization in the organic-based magnet Mn(TCNE)(x) center dot y(CH2Cl2) Reviewed

DA Pejakovic, C Kitamura, JS Miller, AJ Epstein

PHYSICAL REVIEW LETTERS 88 ( 5 ) 57202 2002.2

Language：English Publishing type：Research paper (scientific journal) Publisher：AMERICAN PHYSICAL SOC

Photoinduced magnetization in a magnet based on organic species is reported for the first time. Upon optical excitation in the blue region of spectrum, Mn(tetracyanoethylene)(x) . y(CH2Cl2) (x approximate to 2, y similar to 0.8) exhibits increased magnetic susceptibility at temperatures as high as 75 K, accompanied with photo-induced absorption in the visible and infrared spectral regions. These effects are partially reversible by lower energy visible light and fully reversible by thermal treatment. The results suggest trapping of the photoexcited charge in a metastable state with enhanced exchange interaction.

DOI： 10.1103/PhysRevLett.88.057202

Web of Science

Synthesis and Crystal Structure of 4,7-Bis(2-thienylethynyl)-2,1,3-benzothiadiazole Reviewed

Chitoshi Kitamura, Kakuya Saito, Mikio Ouchi, Akio Yoneda, Yoshiro Yamashita

J. Chem. Res. (S) 511 - 513 2002

Synthesis fo Cyclometalateed Palladium(II) and Platinum(II) Complexes Using 2-Substituted 8-Quinolinols Containing C-Donor Atoms and Steric Interaction between the Ligands Reviewed

Shin-ichi Ohfuchi, Chitoshi Kitamura, George R Newkome, Akio Yoneda

Nippon Kagakukaishi (in Japanese) ( 2 ) 201 - 210 2002

Photoinduced Magnetization in Molecule-Based Magnets KxCo[Fe(CN)6]y•zH2O (x=0.13, y=0.77, z=3.54) and Mn(TCNE)x?y(CH2Cl2) (x=2) Reviewed

Dusan A. Pejakovic, Jamie L. Manson, Chitoshi Kitamura, Joel S. Miller, Arthur J. Epstein

Polyhedron 20 ( 11/14 ) 1435 - 1439 2001

　 PREV - NEXT 　

<KITAMURA Chitoshi>

Papers - KITAMURA Chitoshi