Excitonic and Vibrational Coherence in the Excitation Relaxation Process of Two LH1 Complexes as Revealed by Two-Dimensional Electronic Spectroscopy

Fei Ma, Long Jiang Yu, Ruud Hendrikx, Zheng Yu Wang-Otomo, Rienk Van Grondelle

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    Ultrafast excitation relaxation within a manifold exciton state and long-lived vibrational coherence are two universal characteristics of photosynthetic antenna complexes. In this work, we studied the two-dimensional electronic spectra of two core light-harvesting (LH1) complexes of Thermochromatium (Tch.) tepidum, native Ca2+-LH1 and modified Ba2+-LH1. The role of the vibrational coherence in the exciton relaxation was revealed by comparing the two LH1 with similar structures but different electronic properties and by the evolution of the exciton and vibrational coherence as a function of temperature.

    Original languageEnglish
    Pages (from-to)2751-2756
    Number of pages6
    JournalJournal of Physical Chemistry Letters
    Volume8
    Issue number12
    DOIs
    Publication statusPublished - Jun 15 2017

    ASJC Scopus subject areas

    • Materials Science(all)
    • Physical and Theoretical Chemistry

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