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Titolo:
NEW SOL-GEL PHOTOCHROMIC THIN-FILMS MADE BY SUPERFINE PARTICLES OF ORGANIC PHOTOCHROMIC COMPOUNDS
Autore:
NAKAZUMI H; MAKITA K; NAGASHIRO R;
Indirizzi:
UNIV OSAKA PREFECTURE,DEPT APPL MAT SCI,COLL ENGN,1-1 GAKUEN CHO SAKAI OSAKA 593 JAPAN
Titolo Testata:
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
fascicolo: 1-3, volume: 8, anno: 1997,
pagine: 901 - 909
SICI:
0928-0707(1997)8:1-3<901:NSPTMB>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPIROPYRANS;
Keywords:
PHOTOCHROMISM; NANO PARTICLES; ORGANIC PHOTOCHROMIC COMPOUNDS; INORGANIC-ORGANIC DYE HYBRIDS; THERMAL STABILITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
12
Recensione:
Indirizzi per estratti:
Citazione:
H. Nakazumi et al., "NEW SOL-GEL PHOTOCHROMIC THIN-FILMS MADE BY SUPERFINE PARTICLES OF ORGANIC PHOTOCHROMIC COMPOUNDS", JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 8(1-3), 1997, pp. 901-909

Abstract

New photochromic thin gel films have been prepared by the dipping method from a sol-gel coating solution containing Malachite Green Leucocyanide soluble in sol and super-fine dispersed solution of spiropyran or spironaphthooxazine, which was effective to increase the concentration of photochromic compounds in gel film. Photochromism of these gel films is compared with that in sol under the conditions of acid catalysis. Though in sols using spiropyran and Malachite Green Leucocyanide normal photochromism was not observed, photochromism in thin gel films prepared from the same sol was confirmed. Normal photochromism of spironaphthooxazine in thin gel films was similar to that in solution. Thereaction rate from the colored form to the spiro form of spiropyran and spironaphthooxazine in thin gel film is dependent on the gel matrix, which is influenced by the reaction time of the sol.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 21:55:08