How carotenoids function in photosynthetic bacteria.
Effect of the Solvent Environment on the Spectroscopic Properties and Dynamics of the Lowest Excited States of Carotenoids
The spectroscopic properties and dynamics of the lowest excited singlet states of peridinin, fucoxanthin, neoxanthin, uriolide acetate, spheroidene, and spheroidenone in several different solvents…
The photochemistry and function of carotenoids in photosynthesis
In photosynthetic systems, carotenoids act as light-harvesting molecules and provide photoprotection of the plant and bacterial species (Cogdell and Frank 1987; Siefermann-Harms 1985). In many cases,…
Effect of a conjugated carbonyl group on the photophysical properties of carotenoids
Effects of introducing a carbonyl group into the conjugation system of carotenoids were studied for four naturally occurring carotenoids: peridinin, fucoxanthin, siphonaxanthin and spheroidenone. The…
Singlet and triplet energy transfer in the peridinin-chlorophyll a-protein from Amphidinium carterae
The spectroscopic properties of peridinin in solution, and the efficiency and dynamics of energy transfer from peridinin to chlorophyll a in the peridinin-chlorophyll-protein (PCP) from Amphidinium…
On the photophysics and photochemical properties of carotenoids and their role as light-harvesting pigments in photosynthesis
The Photochemistry of Carotenoids
The aim of this book is to clarify the relationships between Antioxidant Metabolism and Carotenoids in the Regulation of Photosynthesis and to provide a framework for future studies of these relationships in more detail.
Photophysics of the carotenoids associated with the xanthophyll cycle in photosynthesis
- H. Frank, A. Cua, V. Chynwat, A. Young, D. Gosztola, M. Wasielewski
- ChemistryPhotosynthesis Research
- 1 September 1994
The results presented here show that extension of the ⧄ conjugation of the polyene lowers the energy of the lowest excited singlet state of the carotenoid below that of chlorophylla, so zeaxanthin can act as a trap for the excess excitation energy on chlorine pigments within the protein, thus regulating the flow of energy within photosynthetic light-harvesting proteins.
Energy transfer reactions involving carotenoids: quenching of chlorophyll fluorescence.
Mechanism of nonphotochemical quenching in green plants: energies of the lowest excited singlet states of violaxanthin and zeaxanthin.
Technical obstacles have been overcome and S(1) --> S(0) fluorescence spectra of violaxanthin and zexanthin are presented, providing important insights into the mechanism of nonphotochemical dissipation of excess energy in plants.