How the Protein Environment Can Tune the Energy, the Coupling, and the Ultrafast Dynamics of Interacting Chlorophylls: The Example of the Water-Soluble Chlorophyll Protein

Overview

Journal J Phys Chem Lett

Publisher American Chemical Society

Specialty Chemistry

Date 2020 Jan 19

PMID 31952446

Citations 11

Authors

Elisa Fresch

Elena Meneghin

Alessandro Agostini

Harald Paulsen

Donatella Carbonera

Elisabetta Collini

Affiliations

Soon will be listed here.

Abstract

The interplay between active molecules and the protein environment in light-harvesting complexes tunes the photophysics and the dynamical properties of pigment-protein complexes in a subtle way, which is not fully understood. Here we characterized the photophysics and the ultrafast dynamics of four variants of the water-soluble chlorophyll protein (WSCP) as an ideal model system to study the behavior of strongly interacting chlorophylls. We found that when coordinated by the WSCP protein, the presence of the formyl group in chlorophyll replacing the methyl group in chlorophyll strongly affects the exciton energy and the dynamics of the system, opening up the possibility of tuning the photophysics and the transport properties of multichromophores by engineering specific interactions with the surroundings.

Citing Articles

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Tuning by Hydrogen Bonding in Photosynthesis.

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The Role of H-Bonds in the Excited-State Properties of Multichromophoric Systems: Static and Dynamic Aspects.

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A Comprehensive Approach to Exciton Delocalization and Energy Transfer.

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