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The Role of Resonant Vibrations in Electronic Energy Transfer.

ABSTRACT: Nuclear vibrations play a prominent role in the spectroscopy and dynamics of electronic systems. As recent experimental and theoretical studies suggest, this may be even more so when vibrational frequencies are resonant with transitions between the electronic states. Herein, a vibronic multilevel Redfield model is reported for excitonically coupled electronic two-level systems with a few explicitly included vibrational modes and interacting with a phonon bath. With numerical simulations the effects of the quantized vibrations on the dynamics of energy transfer and coherence in a model dimer are illustrated. The resonance between the vibrational frequency and energy gap between the sites leads to a large delocalization of vibronic states, which then results in faster energy transfer and longer-lived mixed coherences.

SUBMITTER: Maly P

PROVIDER: S-EPMC5021137 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature

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The Role of Resonant Vibrations in Electronic Energy Transfer.

Malý Pavel P Somsen Oscar J G OJ Novoderezhkin Vladimir I VI Mančal Tomáš T van Grondelle Rienk R

Chemphyschem : a European journal of chemical physics and physical chemistry 20160322 9

Nuclear vibrations play a prominent role in the spectroscopy and dynamics of electronic systems. As recent experimental and theoretical studies suggest, this may be even more so when vibrational frequencies are resonant with transitions between the electronic states. Herein, a vibronic multilevel Redfield model is reported for excitonically coupled electronic two-level systems with a few explicitly included vibrational modes and interacting with a phonon bath. With numerical simulations the effe ...[more]

PMID: 26910485

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