Electronic and Vibrational Coherence in Photosynthetic Cofactors: Comparison of Solutions and Proteins | Zendy

David C. Arnett | Zendy; Lewis D. Book | Zendy; Christopher C. Moser | Zendy; P. Leslie Dutton | Zendy; Norbert F. Scherer | Zendy

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Electronic and Vibrational Coherence in Photosynthetic Cofactors: Comparison of Solutions and Proteins

Author(s) -

David C. Arnett,

Lewis D. Book,

Christopher C. Moser,

P. Leslie Dutton,

Norbert F. Scherer

Publication year - 1999

Publication title -

laser chemistry

Language(s) - English

Resource type - Journals

eISSN - 1026-8014

pISSN - 0278-6273

DOI - 10.1155/1999/16293

Subject(s) - rhodobacter sphaeroides , bacteriochlorophyll , chromophore , photosynthetic reaction centre , chemistry , chlorosome , dephasing , photochemistry , coherence (philosophical gambling strategy) , purple bacteria , photosynthesis , cofactor , light harvesting complex , monomer , chemical physics , photosystem ii , physics , quantum mechanics , electron transfer , biochemistry , enzyme , organic chemistry , polymer

The interaction between photosynthetic cofactors and the surrounding bath or protein environment is addressed via experimental measurements of the optical coherence responses from bacteriochlorophylla (Bchla) chromophores within the photosynthetic reaction center (RC) of Rhodobacter sphaeroides and solutions of Bchla monomers in THF and pyridine. The results indicate that both the spectrum of fluctuations and chromophore bath coupling strengths vary between solutions and protein. In particular, the protein environment yields faster dephasing, faster spectral diffusion, and significantly more inhomogeneity than solutions.

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