Fluorescence quenching of perylene by Co2+ ions via energy transfer in viscous and non-viscous media

Autor:	David J. S. Birch, Herbert Dreeskamp, T. Salthammer, R.E. Imhof
Rok vydání:	1990
Předmět:	Quenching (fluorescence) General Chemical Engineering Diffusion Analytical chemistry General Physics and Astronomy Thermodynamics General Chemistry Ion chemistry.chemical_compound chemistry Excited state Singlet state Steady state (chemistry) Physics::Chemical Physics Ethylene glycol Perylene
Zdroj:	Journal of Photochemistry and Photobiology A: Chemistry. 55:53-62
ISSN:	1010-6030
DOI:	10.1016/1010-6030(90)80018-s
Popis:	Non-radiative energy transfer from singlet excited perylene to Co2+ ions has been studied in methanol, ethylene glycol and glycerol by time-correlated single-photon counting and steady state quenching experiments. In highly viscous glycerol the decay curves are represented by the expression given by Forster for long-range energy transfer. The experimental critical distance R0 = 13.2 A is in good agreement with the theoretical value. In methanol and ethylene glycol the decay is modified owing to translational motion and can be described by the function exp(— at — bt 1 2 with reasonable values for the reaction sphere and diffusion coefficients.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::73825da187a4a215b59d97514399218e https://doi.org/10.1016/1010-6030(90)80018-s Zobrazit plný text záznamu