2024
DOI: 10.1021/acs.jpcb.4c02059
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Simulation of the Pump–Probe Spectra and Excitation Energy Relaxation of the B850 Band of the LH2 Complex in Purple Bacteria

Chenghong Huang,
Shuming Bai,
Qiang Shi

Abstract: Ultrafast spectroscopic techniques have been vital in studying excitation energy transfer (EET) in photosynthetic light harvesting complexes. In this paper, we simulate the pump− probe spectra of the B850 band of the light harvesting complex 2 (LH2) of purple bacteria, by using the hierarchical equation of motion method and the optical response function approach. The ground state bleach, stimulated emission, and excited state absorption components of the pump−probe spectra are analyzed in detail. The laser pul… Show more

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