Photo-induced intermolecular charge transfer in porphyrin complexes

2000/01/06 by Michael Schreiber, Dmitry Kilin, Ulrich Kleinekathoefer
Physics and Astronomy · #physics.chem-ph #physics.bio-ph

paper · pdf

published as Exciton Processes in Condensed Matter, Editors: R. T. Williams and W. H. Yen, PV98-25, (The Electrochemical Society Proceedings Series, Pennington, NJ 1998), p. 99 · The deep analysis of this problem has been presented in Ph. D. thesis http://xxx.lanl.gov/abs/quant-ph/0001004

arxiv created 2000/01/06 · arxiv updated 2009/12/01

Abstract

Optical excitation of the sequential supermolecule H₂P-ZnP-Q induces an electron transfer from the free-base porphyrin (H₂P) to the quinone (Q) via the zinc porphyrin (ZnP). This process is modeled by equations of motion for the reduced density matrix which are solved numerically and approximately analytically. These two solutions agree very well in a great region of parameter space. It is shown that for the majority of solvents the electron transfer occurs with the superexchange mechanism.

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