Fatigue resistance of photochromic 2,2-diaryl-[2H]-heteroannellated chromenes in solution

被引：10

作者：

Salemi-Delvaux, C

Pottier, E

Guglielmetti, R

Dubest, R

Aubard, J

机构：

[1] Univ Mediterranee, Fac Sci Marseille Luminy, LCMOM, ERS CNRS 158, F-13288 Marseille 9, France

[2] Univ Paris 07, ITODYS, URA CNRS 34, F-75005 Paris, France

来源：

DYES AND PIGMENTS | 1999年 / 40卷 / 2-3期

关键词：

Number:; -; Acronym:; MESRS; Sponsor: Ministère de l’Enseignement Supérieur et de la Recherche Scientifique;

D O I：

10.1016/S0143-7208(98)00043-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The photodegradation in toluene of photochromic compounds in the [2H]-chromenes series has been studied under continuous irradiation. It is shown that the resistance to fatigue depends on the nature of the heteroatoms, the size of the ring and the annellation position. Six-membered aza-heterocycles, as in the spiro[indoline-hetero-annellated benzoxazine] series, improve the fatigue resistance to UV-light; in contrast, the five-membered heteroannellated chromenes (containing benzimidazole, benzothiazole, benzofurane, indole or pyrrole moieties) show a significant increase in the photodegradation process, but a broadening of the visible spectra for the photomerocyanines. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：157 / 162

页数：6

共 19 条

[1] STUDY ON PHOTO-CHEMICAL PROCESS INVOLVED IN BENZOPYRAN RING-OPENING OF PHOTOCHROMIC SPIROPYRANS [J].