Two-photon excitation spectroscopy of photosynthetic light-harvesting complexes and pigments
Author:
Affiliation:
1. Institut für Physik und Astronomie
2. Universität Potsdam
3. D-14476 Potsdam-Golm
4. Germany
5. Institut für Biochemie und Biologie
Abstract
Two-photon excitation (TPE) profiles of LHCII samples containing different xanthophyll complements were measured in the presumed 11Ag− → 21Ag− (S0 → S1) transition region of xanthophylls. Additionally, TPE profiles of Chls a and b in solution and of WSCP, which does not contain carotenoids, were measured. The results indicate that direct two-photon absorption by Chls in the presumed S0 → S1 transition spectral region of carotenoids is dominant over that of carotenoids, with negligible contributions of the latter. These results suggest the re-evaluation of previously published TPE data obtained with photosynthetic pigment–protein complexes containing (B)Chls and carotenoids.
Funder
Deutsche Forschungsgemeinschaft
Grantová Agentura České Republiky
Publisher
Royal Society of Chemistry (RSC)
Subject
Physical and Theoretical Chemistry
Link
http://pubs.rsc.org/en/content/articlepdf/2019/FD/C8FD00198G
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