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Triplet Excitons of Carotenoids Formed by Singlet Fission in a Membrane
Author(s) -
Wang Chen,
Schlamadinger Diana E.,
Desai Varsha,
Tauber Michael J.
Publication year - 2011
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201100571
Subject(s) - singlet fission , resonance raman spectroscopy , singlet state , chemistry , exciton , photochemistry , raman spectroscopy , excited state , fission , chemical physics , resonance (particle physics) , spectroscopy , triplet state , zeaxanthin , carotenoid , lutein , molecule , atomic physics , physics , organic chemistry , optics , nuclear physics , condensed matter physics , neutron , food science , quantum mechanics
The excited‐state dynamics of the carotenoid zeaxanthin embedded in synthetic bilayers (see picture) are probed with time‐resolved resonance Raman spectroscopy. Triplet excitons form with significant yield via a singlet fission mechanism when zeaxanthin self‐ assembles into multimers. We propose a functional role for singlet fission in biological systems.