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Titolo: Dissipative wavepacket dynamics and electron transfer
Autore: Lucke, A; Ankerhold, J;
 Indirizzi:
 Univ Freiburg, Fak Phys, D79104 Freiburg, Germany Univ Freiburg Freiburg Germany D79104 k Phys, D79104 Freiburg, Germany
 Titolo Testata:
 JOURNAL OF CHEMICAL PHYSICS
fascicolo: 10,
volume: 115,
anno: 2001,
pagine: 4696  4707
 SICI:
 00219606(20010908)115:10<4696:DWDAET>2.0.ZU;28
 Fonte:
 ISI
 Lingua:
 ENG
 Soggetto:
 PHOTOSYNTHETIC REACTION CENTERS; BACTERIAL REACTION CENTERS; REDUCED DENSITYMATRICES; COHERENT NUCLEAR MOTION; QUANTUM TIME EVOLUTION; VIBRATIONAL COHERENCE; RHODOBACTERSPHAEROIDES; TENSOR PROPAGATOR; SYSTEM; SPECTROSCOPY;
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Physical, Chemical & Earth Sciences
 Citazioni:
 41
 Recensione:
 Indirizzi per estratti:
 Indirizzo: Ankerhold, J Univ Freiburg, Fak Phys, Hermann Herder Str 3, D79104 Freiburg, Germany Univ Freiburg Hermann Herder Str 3 Freiburg Germany D79104



 Citazione:
 A. Lucke e J. Ankerhold, "Dissipative wavepacket dynamics and electron transfer", J CHEM PHYS, 115(10), 2001, pp. 46964707
Abstract
Coherent wavepacket dynamics on coupled electronic surfaces within a condensedphase environment is studied. Based on a path integral approach, exact expressions for the case of a onedimensional reaction coordinate in a donoracceptor complex are derived. The path integrals over the electronic degree of freedom are further evaluated by applying the golden rule approximation. This procedure allows for an exact treatment of the coupling between solvent or residual molecular degrees of freedom and the reaction coordinate. A detailed picture of the intimate relation between dissipative wavepacket motion and electron transfer is gained also for lower temperatures, strong coupling and slow bath modes, where Redfield type of equations cannot be used. The electron transfer triggered by the coherent vibronic motion leads to a stepwise decay of the population in the donor state. On the acceptor surface the wavepacket dynamics displays a complex interference pattern. Further, it turns out that for a reaction coordinate fast compared to the environmental modes the electronic population dynamics is very sensitive tothe initial correlations between bath and reactive mode. (C) 2001 AmericanInstitute of Physics.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 04:28:16