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Updated: May 18, 2026

Excitonic Hamiltonians for Calculating Optical Absorption Spectra and Optoelectronic Properties of Molecular Aggregates and Solids
Published on: May 27, 2020
Excitation energy transfer modulated by oscillating electronic coupling of a dimeric system embedded in a molecular
Yosuke Suzuki1, Shigenori Tanaka
1Graduate School of Human Development and Environment, Kobe University, 3-11 Tsurukabuto, Nada, Kobe 657-8501, Japan. suzuki@radix.h.kobe-u.ac.jp
Abstract:
We have developed a theoretical formulation for excitation energy transfer between structurally fluctuating dimer molecules in surrounding environments. On the basis of a generalized master equation in which a memory function plays a vital role, the temporal evolutions of the population densities of exciton at the donor and acceptor sites are described. By employing an ansatz form for the memory function, the competitive effects of dimeric coupling and bath modes are analyzed quantitatively, where the roles of oscillating electronic coupling are highlighted.
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