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Titolo:
Radiation-induced coloration of photochromic dithienylethene derivatives
Autore:
Irie, S; Yamaguchi, T; Nakazumi, H; Kobatake, S; Irie, M;
Indirizzi:
Univpanaka Prefecture, Adv Sci & Technol Res Inst, Sakai, Osaka 5998570, Ja Univ Osaka Prefecture Sakai Osaka Japan 5998570 Sakai, Osaka 5998570, Ja Univ Osaka Prefecture, Coll Engn, Sakai, Osaka 5998570, Japan Univ Osaka Prefecture Sakai Osaka Japan 5998570 kai, Osaka 5998570, Japan Kyushu1,niv, Grad Sch Engn, Dept Biochem & Chem, Higashi Ku, Fukuoka 812858 Kyushu Univ Fukuoka Japan 8128581 hem & Chem, Higashi Ku, Fukuoka 812858
Titolo Testata:
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
fascicolo: 5, volume: 72, anno: 1999,
pagine: 1139 - 1142
SICI:
0009-2673(199905)72:5<1139:RCOPDD>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIARYLETHENES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Irie, S Univakaaka Prefecture, Adv Sci & Technol Res Inst, Gakuencho 1-2, Sakai, Os Univ Osaka Prefecture Gakuencho 1-2 Sakai Osaka Japan 5998570 , Os
Citazione:
S. Irie et al., "Radiation-induced coloration of photochromic dithienylethene derivatives", B CHEM S J, 72(5), 1999, pp. 1139-1142

Abstract

The radiation sensitivity of photochromic 1,2-dithienylethenes was studiedwith the aim to develop a new reusable color dosimeter. Upon gamma-irradiation, crystalline colorless 1,2-bis(2,5-dimethyl-3-thienyl)perfluorocyclopentane turned red, and the absorption intensity increased linearly with the absorbed dose. The red color was bleached by visible-light irradiation and the crystal could be reused. On the other hand, crystalline 1,2-bis(a-methyl-l -benzothiophen-3-yl)perfluorocyclopentene did not show any radiation-induced coloration. The radiation sensitivity in solution was also examined to understand the possible applications to solution and film color dosimeters. Although radiation-induced coloration of the above two compounds was observed in benzene, no color change was detected in hexane, 2-methyltetrahydrofuran and n-butyl chloride. Excitation energy migration and transfer mechanism is considered to play a role in the coloration process in benzene.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 04:38:31