Evidence for incoherent energy transfer processes in J-aggregates with Davydov splitting

被引：18

作者：

De Rossi, U

Dahne, S

Gomez, U

Port, H

机构：

[1] Fed Inst Mat Res & Testing, D-12587 Berlin, Germany

[2] Univ Stuttgart, Inst Phys 3, D-70569 Stuttgart, Germany

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 287卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(98)00185-7

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 energy relaxation of J-aggregates exhibiting Davydov splitting is examined by temperature-dependent fluorescence lifetime measurements and time-resolved emission spectra. Experimental results like non-exponential decay behavior, a strong dependence of the fluorescence lifetimes on detection wavelength, and a time-dependent Stokes shift observed using short excitation wavelengths, can be explained when an incoherent energy hopping relaxation is assumed. The results are not consistent with the mechanism of a coherent energy migration. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：395 / 402

页数：8

共 24 条

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