Rogozina M.V., Ionkin V.N., Ivanov A.I. Influence of solvent viscosoty on thermal product yield of charge separation from second excited state in zinc-porphyrin derivatives

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Rogozina Marina Viktorovna
 
Post-Graduate Student, Department of Theoretical Physics and Wave Phenomena,Volgograd State University
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Prospect Universitetsky, 100, 400062 Volgograd, Russian Federation
 
Ionkin Vladimir Nikolaevich
 
Candidate of Physical and Mathematical Sciences, Assistant Professor of Department of Theoretical Physics and Wave Phenomena,Volgograd State University
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Prospect Universitetsky, 100, 400062 Volgograd, Russian Federation
 
Ivanov Anatoliy Ivanovich
 
Doctor of Physical and Mathematical Sciences, Professor, the Head of Department of Theoretical Physics and Wave Phenomena, Volgograd State University 
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Prospect Universitetsky, 100, 400062 Volgograd, Russian Federation

Abstract. To investigate the effect of dynamic characteristics of a solvent on the kinetics of charge separation from the second singlet excited state and following charge recombination into the first singlet excited and ground states of Zn-porphyrin derivatives the set of numerical simulations in the framework of the generalized stochastic point-transition approach has been performed. In the analysis the dynamic parameters of dimethylformamide (DMF) solvent have been used. The usage of a realistic model considering up to 10 high-frequency modes have allowed us to get an quantitative fitting to the kinetics of the charge-separated state population of Zn(II)-porphyrine covalently linked to naphtaleneimide in DMF solvent. Calculated population kinetics of the charge-separated state reproduces all the experimentally observed features. Regularities of the effect of solvent dynamic characteristics on the yield of thermalized reaction products have been stated.

Key words: photoinduced electron transfer, nonthermal transitions, solvent relaxation, multichannel stochastic model, intramolecular reorganization.

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Influence of solvent viscosoty on thermal product yield of charge separation from second excited state in zinc-porphyrin derivatives by Rogozina M.V., Ionkin V.N., Ivanov A.I. is licensed under a Creative Commons Attribution 4.0 International License.

Citation in English: Science Journal of Volgograd State University. Mathematics. Physics. №2 (17) 2012 pp. 83-90

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