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

Autor:	Helmut Port, U. Gómez, U. De Rossi, Siegfried Dähne
Rok vydání:	1998
Předmět:	Chemistry General Physics and Astronomy Fluorescence symbols.namesake Wavelength Stokes shift symbols Relaxation (physics) Emission spectrum Physical and Theoretical Chemistry Atomic physics J-aggregate Energy (signal processing) Excitation
Zdroj:	Chemical Physics Letters. 287:395-402
ISSN:	0009-2614
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::51e9e913461e0da171148d6c1faea239 https://doi.org/10.1016/s0009-2614(98)00185-7 Zobrazit plný text záznamu Full Text from ScienceDirect