Photochromism of a new class of spiroindoline compounds

被引：20

作者：

Goebel, L ^{[1
]}

Brede, O ^{[1
]}

Zimmermann, T ^{[1
]}

机构：

[1] UNIV LEIPZIG,DEPT ORGAN CHEM,D-04303 LEIPZIG,GERMANY

来源：

RADIATION PHYSICS AND CHEMISTRY | 1996年 / 47卷 / 03期

关键词：

D O I：

10.1016/0969-806X(95)00118-H

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Photochromic processes of a new class of spiroindoline compounds (substituted 6-benzoyl-3,5-diaryl-spiro[cyclohexa-2,4-diene- 1,2'-indolines]) have been investigated by stationary irradiation and by laser flash photolysis. Ring-opening and ring-closure are reversible, but with repeated irradiation concentration of dye decreases. In laser flash photolysis experiments a strong solvent dependence was found. Ring-opening competes with intersystem crossing to T-1 and is the only reaction pathway in nonpolar solvents such as cyclohexane. Values of Phi .epsilon have been measured and are found to be strongly dependent on excitation wavelength for merocyanine formation.

引用

页码：369 / 371

页数：3

共 5 条

[1]

[Anonymous], ERHALTUNG ORBITALSYM

[2] ORGANIC MATERIALS FOR REVERSIBLE OPTICAL-DATA STORAGE [J].