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- W2898819562 abstract "Bacteriochlorophyll a (BChla) is the most abundant pigment found in the Bacterial Reaction Center (BRC) and light-harvesting proteins of photosynthetic purple and green bacteria. Recent two-dimensional electronic spectroscopy (2DES) studies of photosynthetic pigment–protein complexes including the BRC and the Fenna–Matthews–Olson (FMO) complex have shown oscillatory signals, or coherences, whose physical origin has been hotly debated. To better understand the observations of coherence in larger photosynthetic systems, it is important to carefully characterize the spectroscopic signatures of the monomeric pigments. Prior spectroscopic studies of BChla have differed significantly in their observations, with some studies reporting little to no coherence. Here we present evidence of strong coherences in monomeric BChla in isopropanol using 2DES at 77 K. We resolve many modes with frequencies that correspond well with known vibrational modes. We confirm their vibrational origin by comparing the 2D spectroscopic signatures with expectations based on a purely vibrational model." @default.
- W2898819562 created "2018-11-09" @default.
- W2898819562 creator A5002370746 @default.
- W2898819562 creator A5007751623 @default.
- W2898819562 creator A5083017437 @default.
- W2898819562 date "2018-10-30" @default.
- W2898819562 modified "2023-09-26" @default.
- W2898819562 title "Characterization of Vibrational Coherence in Monomeric Bacteriochlorophyll a by Two-Dimensional Electronic Spectroscopy" @default.
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- W2898819562 doi "https://doi.org/10.1021/acs.jpclett.8b02691" @default.
- W2898819562 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30376340" @default.
- W2898819562 hasPublicationYear "2018" @default.
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