Faculty Profiles - YAMAGUCHI, Shigehiro

Papers - YAMAGUCHI, Shigehiro

Division display 321 - 340 of about 377 ／ All the affair displays >>

A Key Role of Orbital Interaction in the Main Group Element-Containing -Electron Systems

S. Yamaguchi, K. Tamao

Chem. Lett. Vol. 34 page： 2-7 2005

Ladder bis-silicon-bridged stilbenes as a new building unit for fluorescent pi-conjugated polymers

CH Xu, H Yamada, A Wakamiya, S Yamaguchi, K Tamao

MACROMOLECULES Vol. 37 ( 24 ) page： 8978 - 8983 2004.11

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：AMER CHEMICAL SOC

pi-Conjugated polymers containing the bis-silicon-bridged stilbene (5,10-dihydro-5,10-disilaindeno[2,1-a]indene) skeleton in the main chain have been synthesized. Our synthesis uses 3,8-dimethoxy derivatives (2) and 3,8-difluoro derivatives (3) of the bis-silicon-bridged stilbene as the key precursors. Thus, their regioselective ortho-metalation reactions with appropriate bases (sec-butyllithium for 2 and (LiBu2ZnTMP)-Bu-t for 3) followed by quenching with electrophiles afford various 2,7-difunctionalized bis-silicon-bridged stilbenes. By using the 2,7-difunctionalized derivatives as starting materials, a series of pi-conjugated polymers, including homopolymers of the bis-silicon-bridged stilbene skeleton and copolymers between the bis-silicon-bridged stilbene unit and other types of monomer units, such as bithiophene and diethynylbenzene, have been synthesized by cross-coupling methodologies. While all the homopolymers of the bis-silicon-bridged stilbene skeleton exhibit an intense blue to greenish-blue emission, the copolymers with the bithiophene and diethynylbenzene units show green and orange emissions, respectively, suggesting easy tuning of the emission colors over a wide range.

DOI： 10.1021/ma0486546

Web of Science

General Silaindene Synthesis Based on Intramolecular Reductive Cyclization: Synthesis of New Fluorescent Silicon-Containing p-Electron Systems Reviewed

C. Xu, A. Wakamiya, S. Yamaguchi

Org. Lett., 6, 3707-3710 Vol. 6 ( 21 ) page： 3707 - 3710 2004.10

All-anti Pentasilane: Conformation Control of Oligosilanes Based on Bis(tetramethylene)-tethered Trisilane Unit Reviewed

Hayato Tsuji, Aiko Fukazawa, Shigehiro Yamaguchi, Akio Toshimitsu, Kohei Tamao

Organometallics Vol. 23 ( 14 ) page： 3375 - 3377 2004.7

First Br-4 four centre-six electron and Se2Br5 seven centre-ten electron bonds in nonionic bromine adducts of selenanthrene

Nakanishi W, Hayashi S, Yamaguchi S, Tamao K

CHEMICAL COMMUNICATIONS ( 2 ) page： 140 - 141 2004.1

Ladder Bis-Silicon-Bridged Stilbenes as a New Building Unit for Fluorescent pi-Conjugated Polymers

C. Xu, H. Yamada, A. Wakamiya, S. Yamaguchi, and K. Tamao

Macromolecules Vol. 37 page： 8978-8983 2004

Endo-endo mode intramolecular reductive cyclization of cyclic 1,2-bis(silylethynyl)benzenes

Yamaguchi S, Miyasato M, Tamao K

CHEMISTRY LETTERS Vol. 32 ( 12 ) page： 1104 - 1105 2003.12

Bis-Silicon-Bridged Stilbene Homologues Synthesized by New Intramolecular Reductive Double Cyclization

S. Yamaguchi, C, Xu, and K. Tamao,

J. Am. Chem. Soc. Vol. 125 page： 13662-13663 2003

The double N-arylation of primary amines: Toward multisubstituted carbazoles with unique optical properties

Nozaki K, Takahashi K, Nakano K, Hiyama T, Tang HZ, Fujiki M, Yamaguchi S, Tamao K

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 42 ( 18 ) page： 2051 - 2053 2003

A colorimetric and ratiometric fluorescent chemosensor with three emission changes: Fluoride ion sensing by a triarylborane-porphyrin conjugate

Kubo Y, Yamamoto M, Ikeda M, Takeuchi M, Shinkai S, Yamaguchi S, Tamao K

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 42 ( 18 ) page： 2036 - 2040 2003

Dibenzoborole-containing pi-electron systems: Remarkable fluorescence change based on the "on/off" control of the p(pi)-pi* conjugation

Yamaguchi S, Shirasaka T, Akiyama S, Tamao K

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Vol. 124 ( 30 ) page： 8816 - 8817 2002.7

Cross-coupling reactions in the chemistry of silole-containing pi-conjugated oligomers and polymers

Yamaguchi S, Tamao K

JOURNAL OF ORGANOMETALLIC CHEMISTRY Vol. 653 ( 1-2 ) page： 223 - 228 2002.7

Synthesis, structures, and UV-visible absorption spectra of tri(9-anthryl)bismuthine derivatives

Yamaguchi S, Shirasaka T, Tamao K

ORGANOMETALLICS Vol. 21 ( 12 ) page： 2555 - 2558 2002.6

A new approach to photophysical properties control of main group element pi-electron compounds based on the coordination number change

Yamaguchi S, Akiyama S, Tamao K

JOURNAL OF ORGANOMETALLIC CHEMISTRY Vol. 652 ( 1-2 ) page： 3 - 9 2002.6

The coordination number-photophysical properties relationship of trianthrylphosphorus compounds: doubly locked fluorescence of anthryl groups

Yamaguchi S, Akiyama S, Tamao K

JOURNAL OF ORGANOMETALLIC CHEMISTRY Vol. 646 ( 1-2 ) page： 277 - 281 2002.3

Dibenzoborole-Containing -Electron Systems: Remarkable Fluorescence Change Based on the ON/OFF-Control of the p-* Conjugation

S. Yamaguchi, T. Shirasaka, S. Akiyama, and K. Tamao

J. Am. Chem. Soc. Vol. 124 page： 8816-8817 2002

Colorimetric fluoride ion sensing by boron-containing pi-electron systems

Yamaguchi S, Akiyama S, Tamao K

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Vol. 123 ( 46 ) page： 11372 - 11375 2001.11

The first alkali metal selenothioates: Synthesis and molecular structure

Niyomura O, Sakai K, Murai T, Kato S, Yamaguchi S, Tamao K

CHEMISTRY LETTERS ( 10 ) page： 968 - 969 2001.10

Structural optimization of 2,5-diarylsiloles as excellent electron-transporting materials for organic electroluminescent devices

Uchida M, Izumizawa T, Nakano T, Yamaguchi S, Tamao K, Furukawa K

CHEMISTRY OF MATERIALS Vol. 13 ( 8 ) page： 2680 - 2683 2001.8

Diphenylamino-substituted 2,5-diarylsiloles for single-layer organic electroluminescent devices

Yamaguchi S, Endo T, Uchida M, Izumizawa T, Furukawa K, Tamao K

CHEMISTRY LETTERS ( 2 ) page： 98 - 99 2001.2

　 PREV - NEXT 　

<YAMAGUCHI, Shigehiro>

Papers - YAMAGUCHI, Shigehiro