TIME-RESOLVED MEASUREMENT OF THE STIMULATED-EMISSION STOKES SHIFT IN LDS750 - EVIDENCE FOR INHOMOGENEOUS RELAXATION KINETICS

被引：28
作者：
BLANCHARD, GJ [1 ]
机构：
[1] BELL COMMUN RES INC,RED BANK,NJ 07701
来源：
JOURNAL OF CHEMICAL PHYSICS | 1991年 / 95卷 / 09期
关键词：
D O I：
10.1063/1.461552
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：
The fluorescence spectrum of LDS750, a polar organic molecule, is measured as a function of time subsequent to its excitation using transient stimulated emission spectroscopy. At early time, the emission profile of LDS750 is dependent on the excitation energy, while at long times it is not. The evolution of the steady-state fluorescence spectrum is seen to occur as a result of inhomogeneous relaxation kinetics in the emission band rather than via a uniform red shift of a single feature. The individual features giving rise to the observed spectral dynamics are a consequence of an end-group photoisomerization of LDS750.
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页码：6317 / 6325
页数：9
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