Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Photoconductive properties of a mesogenic long-chain tetraphenylporphyrin oxovanadium(IV) complex
Autore:
Monobe, H; Miyagawa, Y; Mima, S; Sugino, T; Uchida, K; Shimizu, Y;
Indirizzi:
MITI, AIST, Osaka Natl Res Inst, Dept Organ Mat, Ikeda, Osaka 5638577, Japan MITI Ikeda Osaka Japan 5638577 ept Organ Mat, Ikeda, Osaka 5638577, Japan Ryukoku Univ, Dept Chem Mat, Otsu, Shiga 5202194, Japan Ryukoku Univ OtsuShiga Japan 5202194 hem Mat, Otsu, Shiga 5202194, Japan
Titolo Testata:
THIN SOLID FILMS
fascicolo: 1-2, volume: 393, anno: 2001,
pagine: 217 - 224
SICI:
0040-6090(20010801)393:1-2<217:PPOAML>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
DISCOTIC LIQUID-CRYSTALS; CHARGE MIGRATION; BEHAVIOR; 5,10,15,20-TETRAKIS(4-N-PENTADECYLPHENYL)PORPHYRIN; PHTHALOCYANINES; PHOTOCURRENT; PORPHYRIN; PHASE; CELL;
Keywords:
photoconductivity; discotic liquid crystal; phase transition; lamellar phase; metallomesogen; porphyrin;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Shimizu, Y MITI, AIST, Osaka Natl Res Inst, Dept Organ Mat, 1-8-31 Midorigaoka, Ikeda, Osaka 5638577, Japan MITI 1-8-31 Midorigaoka Ikeda Osaka Japan5638577 638577, Japan
Citazione:
H. Monobe et al., "Photoconductive properties of a mesogenic long-chain tetraphenylporphyrin oxovanadium(IV) complex", THIN SOL FI, 393(1-2), 2001, pp. 217-224

Abstract

The photoconductive properties of a mesogenic long-chain tetraphenylporphyrin, 5,10,15,20-tetrakis(4-n-pentadecylphenyl)porphinatooxovanadium(IV) were investigated and compared with those of the metal-free compound for a symmetrical sandwich-type ITO cell. This compound shows two types of lamellar mesophases (M-LC and M-L phases) and the phase transition sequence is Cr 51M-LC 83 M-L 140 Iso. A similar photocurrent rectification behavior to the corresponding metal-free tetraphenylporphyrin mesogen was shown. However, the observed photocurrent was remarkably larger than that of the metal-free compound for all phases. The action spectra and the temperature dependence of the dark- and photocurrents were also investigated on the mesomorphic phase transition behavior. These results imply that the photoconductive property of mesogenic tetraphenylporphyrin-based compounds could be drastically affected by a change of molecular fluctuation and long-range order through mesomorphic phase transitions and a metal species inserted in the central core. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 00:39:52