Poster: "Spectroscopic study of caroteno-macrocycle triads mimicking several photophysical properties of natural photosynthetic systems"

PALACIOS, RODRIGO E.; MARIÑO-OCHOA, ERNESTO; KODIS, GERDENIS; GUST, DEVENS; MOORE, THOMAS A.; MOORE, ANA L.

Salve Regina University, Newport, RI. USA

Conferencia; Gordon Research conference on “Electron donor acceptor interactions”; 2002

Gordon Research conference

Carotenoids are omnipresent pigments in the photosynthetic membranes of plants and bacteria where they are involved in at least three fundamental photophysical processes. Light-harvesting for photosynthetic work, regulation of singlet-state energy flow to the photosynthetic reaction centers, and photoprotection via the dissipation of excited triplet-state energy. In this study, new triads consisting of carotenoids covalently linked to phthalocyanine-like dyes have been synthesized and studied spectroscopically. They display remarkable singlet and triplet energy transfer efficiencies and in one case a considerable yield of photoinduced charge-separated species.