Search

Your search keyword '"Uno, Hidemitsu"' showing total 1,002 results
Start Over Author "Uno, Hidemitsu"
1,002 results on '"Uno, Hidemitsu"'

151. In situ preparation of highly fluorescent pyrene-dyes from non-luminous precursors upon photoirradiation

Author

Aotake, Tatsuya, Tanimoto, Hiroshi, Hotta, Hidekatsu, 00583717, Kuzuhara, Daiki, Okujima, Tetsuo, Uno, Hidemitsu, 20372724, Yamada, Hiroko, Aotake, Tatsuya, Tanimoto, Hiroshi, Hotta, Hidekatsu, 00583717, Kuzuhara, Daiki, Okujima, Tetsuo, Uno, Hidemitsu, 20372724, and Yamada, Hiroko

Abstract

application/pdf, The non-luminous precursor, 2-(1-pyrenyl)-9,10-dihydro-9,10-ethanoanthracene-11,12-dione, was photochemically converted to highly-fluorescent 2-(1-pyrenyl)anthracene quantitatively in solution and in the PMMA film and the fluorescence quantum yield of the acene in benzonitrile was as high as 0.99.

Published
2013

152. Thiatriphyrin(2.1.1): A Core-Modified Contracted Porphyrin

Author

00583717, Kuzuhara, Daiki, Sakakibara, Yuka, Mori, Shigeki, Okujima, Tetsuo, Uno, Hidemitsu, 20372724, Yamada, Hiroko, 00583717, Kuzuhara, Daiki, Sakakibara, Yuka, Mori, Shigeki, Okujima, Tetsuo, Uno, Hidemitsu, 20372724, and Yamada, Hiroko

Abstract

application/pdf

Published
2013

153. Synthesis and properties of boron complexes of [14]triphyrins(2.1.1)

Author

Kuzuhara, Daiki, 278, 00583717, Xue, ZhaoLi, Mori, Shigeki, 27762, Okujima, Tetsuo, 27763, Uno, Hidemitsu, 27764, Aratani, Naoki, 22, 60372562, Yamada, Hiroko, 5, 20372724, Kuzuhara, Daiki, 278, 00583717, Xue, ZhaoLi, Mori, Shigeki, 27762, Okujima, Tetsuo, 27763, Uno, Hidemitsu, 27764, Aratani, Naoki, 22, 60372562, Yamada, Hiroko, 5, and 20372724

Abstract

Boron complexes of [14]triphyrins(2.1.1) were prepared from free-base [14]triphyrins(2.1.1) with phenylboron dichloride. The absorption spectrum of the meso-free [small beta]-alkyl-triphyrin boron complex in CH2Cl2 showed a broad weak band at around 640 nm assigned to transition from B-phenyl to the triphyrin, while that of the meso-aryl benzotriphyrin boron complex showed only Soret and Q bands., journal article

Published
2013

154. Solution-processed anthradithiophene-PCBM p-n junction photovoltaic cells fabricated by using the photoprecursor method

Author

Yamada, Hiroko, 5, 20372724, Yamaguchi, Yuji, Katoh, Ryuta, 27772, Motoyama, Takao, 27773, Aotake, Tatsuya, 27774, Kuzuhara, Daiki, 278, 00583717, Suzuki, Mitsuharu, 293, 20724959, Okujima, Tetsuo, 27775, Uno, Hidemitsu, 27776, Aratani, Naoki, 22, 60372562, Nakayama, Ken-ichi, 27777, Yamada, Hiroko, 5, 20372724, Yamaguchi, Yuji, Katoh, Ryuta, 27772, Motoyama, Takao, 27773, Aotake, Tatsuya, 27774, Kuzuhara, Daiki, 278, 00583717, Suzuki, Mitsuharu, 293, 20724959, Okujima, Tetsuo, 27775, Uno, Hidemitsu, 27776, Aratani, Naoki, 22, 60372562, Nakayama, Ken-ichi, and 27777

Abstract

P-n junction solar cells based on anthradithiophene (ADT) as a p-type semiconductor were fabricated by using the photoprecursor method in which an [small alpha]-diketone-type precursor was spin-coated and then transformed to ADT in situ by photoirradiation. Combination with PC71BM as an n-layer material led to 1.54% photoconversion efficiency., journal article

Published
2013

155. A soluble bispentacenequinone precursor for creation of directly 6,6'-linked bispentacenes and a tetracyanobipentacenequinodimethane

Author

Tanaka, Kazuki, 27877, Aratani, Naoki, 22, Kuzuhara, Daiki, 278, 00583717, Sakamoto, Sadaaki, 27878, Okujima, Tetsuo, 27879, Ono, Noboru, 27880, Uno, Hidemitsu, 27881, Yamada, Hiroko, 5, 20372724, Tanaka, Kazuki, 27877, Aratani, Naoki, 22, Kuzuhara, Daiki, 278, 00583717, Sakamoto, Sadaaki, 27878, Okujima, Tetsuo, 27879, Ono, Noboru, 27880, Uno, Hidemitsu, 27881, Yamada, Hiroko, 5, and 20372724

Abstract

We have synthesized 13,13'-(3,5-bis(trifluoromethyl)phenyl)-6,6'-bipentacene from a soluble bispentacenequinone precursor. Bispentacene takes orthogonal conformation in the solid state and exhibits four reversible redox potentials. In addition, a tetracyanobipentacenequinodimethane was obtained for the first time from the pure bispentacenequinone., journal article

Published
2013

156. Thiatriphyrin(2.1.1): A Core-Modified Contracted Porphyrin

Author

Kuzuhara, Daiki, 278, 00583717, Sakakibara, Yuka, Mori, Shigeki, 27929, Okujima, Tetsuo, 27930, Uno, Hidemitsu, 27931, Yamada, Hiroko, 5, 20372724, Kuzuhara, Daiki, 278, 00583717, Sakakibara, Yuka, Mori, Shigeki, 27929, Okujima, Tetsuo, 27930, Uno, Hidemitsu, 27931, Yamada, Hiroko, 5, and 20372724

Abstract

journal article

Published
2013

157. Synthesis, Structure, and Photochemistry of 5,14-Diketopentacene

Author

Aotake, Tatsuya, 27999, Ikeda, Shinya, 28000, 278, 00583717, Mori, Shigeki, 28001, Okujima, Tetsuo, 28002, Uno, Hidemitsu, 28003, Yamada, Hiroko, 5, 20372724, Aotake, Tatsuya, 27999, Ikeda, Shinya, 28000, 278, 00583717, Mori, Shigeki, 28001, Okujima, Tetsuo, 28002, Uno, Hidemitsu, 28003, Yamada, Hiroko, 5, and 20372724

Abstract

journal article

Published
2012

158. First Synthesis of Dodecasubstituted Porphycenes

Author

Kuzuhara, Daiki, 278, 00583717, Yamada, Hiroko, 20372724, Yano, Keiko, 27949, Okujima, Tetsuo, 27950, Mori, Shigeki, 27951, Uno, Hidemitsu, 27952, Kuzuhara, Daiki, 278, 00583717, Yamada, Hiroko, 20372724, Yano, Keiko, 27949, Okujima, Tetsuo, 27950, Mori, Shigeki, 27951, Uno, Hidemitsu, and 27952

Abstract

journal article

Published
2011

159. Synthesis of pentacene-, tetracene- and anthracene bisimides using double-cyclization reaction mediated by bismuth(iii) triflate

Author

Katsuta, Shuhei, Tanaka, Kazuki, Maruya, Yukihiro, Mori, Shigeki, Masuo, Sadahiro, Okujima, Tetsuo, Uno, Hidemitsu, Nakayama, Ken-ichi, 20372724, Yamada, Hiroko, Katsuta, Shuhei, Tanaka, Kazuki, Maruya, Yukihiro, Mori, Shigeki, Masuo, Sadahiro, Okujima, Tetsuo, Uno, Hidemitsu, Nakayama, Ken-ichi, 20372724, and Yamada, Hiroko

Abstract

application/pdf, Novel bisimide-fused acenes were synthesized viabismuth triflate mediated double-cyclization reaction of acid chlorides and isocyanates. Their optical and electrical properties revealed significantly smaller HOMO-LUMO gaps compared with those of their parent acenes. Fabricated OFET based on tetracene bisimide showed n-type OFET outputs.

Published
2011

160. Synthesis, structures and properties of benzoporphycenes and naphthoporphycenes

Author

00583717, Kuzuhara, Daiki, 20372724, Yamada, Hiroko, Mori, Shigeki, Okujima, Tetsuo, Uno, Hidemitsu, 00583717, Kuzuhara, Daiki, 20372724, Yamada, Hiroko, Mori, Shigeki, Okujima, Tetsuo, and Uno, Hidemitsu

Abstract

application/pdf, A series of benzoporphycenes and naphthoporphycenes and their zinc complexes were prepared from bicyclo[2.2.2]octadiene fused porphycenes by a retro-Diels-Alder reaction and their photophysical properties were studied. Free-base tetranaphthoporphycene was not soluble in common organic solvents, but zinc tetranaphthoporphycene was slightly soluble in pyridine and showed B- and Q-bands at 507 and 690 nm, respectively. Dinaphthoporphycene showed broad B- and Q-bands due to its lower symmetry. Tetrabenzo-, dibenzo-, and dinaphthoporphycenes showed fluorescence at 673, 654, and 670 nm with quantum yields of 0.32, 0.42, and 0.31, respectively, although their precursors were non-fluorescent. Zinc complexes of tetrabenzo-, dibenzo-, tetranaphtho-, dinaphthoporphycenes and their bicyclo[2.2.2]octadiene-fused precursors revealed moderate fluorescence with quantum yields of 0.15-0.37. The crystal structures of tetrabenzo- and dibenzoporphycenes showed herringbone structures, while the zinc tetrabenzoporphycene showed a hexagonal box-structure with six pyridine ligands inside.

Published
2011

161. Synthesis, structures and properties of benzoporphycenes and naphthoporphycenes

Author

Kuzuhara, Daiki, 278, 00583717, Yamada, Hiroko, 20372724, Mori, Shigeki, 28008, Okujima, Tetsuo, 28009, Uno, Hidemitsu, 28010, Kuzuhara, Daiki, 278, 00583717, Yamada, Hiroko, 20372724, Mori, Shigeki, 28008, Okujima, Tetsuo, 28009, Uno, Hidemitsu, and 28010

Abstract

A series of benzoporphycenes and naphthoporphycenes and their zinc complexes were prepared from bicyclo[2.2.2]octadiene fused porphycenes by a retro-Diels-Alder reaction and their photophysical properties were studied. Free-base tetranaphthoporphycene was not soluble in common organic solvents, but zinc tetranaphthoporphycene was slightly soluble in pyridine and showed B- and Q-bands at 507 and 690 nm, respectively. Dinaphthoporphycene showed broad B- and Q-bands due to its lower symmetry. Tetrabenzo-, dibenzo-, and dinaphthoporphycenes showed fluorescence at 673, 654, and 670 nm with quantum yields of 0.32, 0.42, and 0.31, respectively, although their precursors were non-fluorescent. Zinc complexes of tetrabenzo-, dibenzo-, tetranaphtho-, dinaphthoporphycenes and their bicyclo[2.2.2]octadiene-fused precursors revealed moderate fluorescence with quantum yields of 0.15-0.37. The crystal structures of tetrabenzo- and dibenzoporphycenes showed herringbone structures, while the zinc tetrabenzoporphycene showed a hexagonal box-structure with six pyridine ligands inside., journal article

Published
2011

162. New synthesis of meso-free-[14]triphyrin(2.1.1) by McMurry coupling and its derivatization to Mn(i) and Re(i) complexes

Author

00583717, Kuzuhara, Daiki, 20372724, Yamada, Hiroko, Xue, ZhaoLi, Okujima, Tetsuo, Mori, Shigeki, Shen, Zhen, Uno, Hidemitsu, 00583717, Kuzuhara, Daiki, 20372724, Yamada, Hiroko, Xue, ZhaoLi, Okujima, Tetsuo, Mori, Shigeki, Shen, Zhen, and Uno, Hidemitsu

Abstract

application/pdf, The metal-free and meso-free [14]triphyrin(2.1.1) compound was successfully prepared based on the intramolecular McMurry coupling reaction of diformyl-tripyrrane in 16% yield, and was converted to the bowl-shaped Mn(i)(TriP)(CO)3 and Re(i)(TriP)(CO)3.

Published
2010

163. New synthesis of meso-free-[14]triphyrin(2.1.1) by McMurry coupling and its derivatization to Mn(i) and Re(i) complexes

Author

Kuzuhara, Daiki, 278, 00583717, Yamada, Hiroko, 20372724, Xue, ZhaoLi, 27733, Okujima, Tetsuo, 27734, Mori, Shigeki, 27735, Shen, Zhen, 27736, Uno, Hidemitsu, 27737, Kuzuhara, Daiki, 278, 00583717, Yamada, Hiroko, 20372724, Xue, ZhaoLi, 27733, Okujima, Tetsuo, 27734, Mori, Shigeki, 27735, Shen, Zhen, 27736, Uno, Hidemitsu, and 27737

Abstract

The metal-free and meso-free [14]triphyrin(2.1.1) compound was successfully prepared based on the intramolecular McMurry coupling reaction of diformyl-tripyrrane in 16% yield, and was converted to the bowl-shaped Mn(i)(TriP)(CO)3 and Re(i)(TriP)(CO)3., journal article

Published
2010

179. Boron Difluoride Complexes of Expanded N-Confused Calix[ n]phyrins That Demonstrate Unique Luminescent and Lasing Properties.

Author

Ishida, Masatoshi, Omagari, Toshihiro, Hirosawa, Ryuji, Jono, Keisuke, Sung, Young Mo, Yasutake, Yuhsuke, Uno, Hidemitsu, Toganoh, Motoki, Nakanotani, Hajime, Fukatsu, Susumu, Kim, Dongho, and Furuta, Hiroyuki

Subjects
BORON, MACROCYCLIC compounds, WAVELENGTHS, NONMETALS, BORENIUM ions
Abstract

Complexation of novel multiply N-confused expanded calix[ n]phyrins with boron difluoride afforded a new class of cyclic BODIPY (boron-dipyrromethene) arrays. The structures of circularly arranged BODIPY subunits linked in an N-confused fashion give rise to such photophysical properties unique to the macrocycles as redshifted emission wavelengths along with apparent large Stokes shifts, long emission lifetimes, and solid-state lasing. The DFT calculations support the size-dependent excited-state dynamics of the macrocycles. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results