LASER-INDUCED ABSORPTION AND FLUORESCENCE STUDIES OF PHOTOCHROMIC SCHIFF-BASES

被引：105
|
作者：
KOWNACKI, K [1 ]
MORDZINSKI, A [1 ]
WILBRANDT, R [1 ]
GRABOWSKA, A [1 ]
机构：
[1] RISO NATL LAB,DEPT ENVIRONM SCI & TECHNOL,DK-4000 ROSKILDE,DENMARK
来源：
CHEMICAL PHYSICS LETTERS | 1994年 / 227卷 / 03期
关键词：
D O I：
10.1016/0009-2614(94)00826-4
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：
Three photochromic Schiff bases: N-salicylideneaniline (SA), N-salicylidene-1-naphthylamine (SN), and N,N-bis-(salicylidene)-p-phenylenediamine (Bsp), were studied in acetonitrile by means of steady-state and time-resolved absorption and fluorescence spectroscopy, as well as semiempirical quantum chemical calculations. In all these molecules, the transient absorption and two-step laser-induced fluorescence spectra of long-lived transients are remarkably similar. The photochromic species is tentatively assigned to the non-hydrogen bonded form of the proton transfer reaction product with a considerable contribution of zwitterionic character.
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页码：270 / 276
页数：7
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