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On the Coherent Description of Diffusion‐Influenced Fluorescence Quenching Experiments II: Early Events
Author(s) -
Angulo Gonzalo,
Kattnig Daniel R.,
Rosspeintner Arnulf,
Grampp Günter,
Vauthey Eric
Publication year - 2010
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200901693
Subject(s) - merge (version control) , electron transfer , nanosecond , kinetics , chemical physics , chemistry , quenching (fluorescence) , statistical physics , reaction–diffusion system , fluorescence , chemical kinetics , reaction rate , biological system , computer science , thermodynamics , physics , photochemistry , optics , classical mechanics , laser , catalysis , biochemistry , information retrieval , biology
Abstract In a previous article we showed how to perform and analyze steady‐state and nanosecond time‐resolved experiments on fluorescence quenching by electron transfer in a coherent manner. Now, by making use of a superior time resolution, we explore the first stages of this kind of reaction. The novel information gained enables us to merge the results on the viscosity and the driving‐force dependencies of the reaction rate. A unique set of parameters for a single reaction channel suffices to describe all the results in the frame of differential encounter theory for diffusion‐influenced, bimolecular, remote electron‐transfer reactions. The inclusion of the solvent structure is crucial for the understanding of the reaction kinetics. To the authors’ best knowledge, this is the first time that such a comprehensive set of data has been successfully and jointly explained in the field, with physically sound parameters for electron‐transfer reactions.