Carotenoids as electron or excited-state energy donors in artificial photosynthesis: an ultrafast investigation of a carotenoporphyrin and a carotenofullerene dyad

S. Pillai, J. Ravensbergen, A. Antoniuk-Pablant, B.D. Sherman, R. van Grondelle, R.N. Frese, T.A. Moore, D. Gust, A.L. Moore, J.T.M. Kennis

Research output: Contribution to JournalArticle

Abstract

Photophysical investigations of molecular donor-acceptor systems have helped elucidate many details of natural photosynthesis and revealed design principles for artificial photosynthetic systems. To obtain insights into the factors that govern the partition between excited-state energy transfer (EET) and electron transfer (ET) processes among carotenoids and tetrapyrroles and fullerenes, we have designed artificial photosynthetic dyads that are thermodynamically poised to favor ET over EET processes. The dyads were studied using transient absorption spectroscopy with ∼100 femtosecond time resolution. For dyad 1, a carotenoporphyrin, excitation to the carotenoid S
Original languageEnglish
Pages (from-to)4775-4784
JournalPhysical Chemistry Chemical Physics - PCCP
Volume15
Issue number13
DOIs
Publication statusPublished - 2013

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