High-Yield Singlet Fission in a Zeaxanthin Aggregate Observed by Picosecond Resonance Raman Spectroscopy
Journal of the American Chemical Society2010Vol. 132(40), pp. 13988–13991
Citations Over TimeTop 10% of 2010 papers
Abstract
We report high-yield triplet generation by singlet fission upon photoexcitation of a new aggregate of the carotenoid all-trans 3R,3'R-zeaxanthin. The yield is determined by picosecond time-resolved resonance Raman spectroscopy, which allows direct characterization and quantification of triplet excited-state signatures and ground-state depletion. The technique and analysis reveals that triplets form within picoseconds. A quantum yield of 90-200% is derived with the assumption of weak exciton-coupling in the zeaxanthin aggregate.
Related Papers
- → Emissive spin-0 triplet-pairs are a direct product of triplet–triplet annihilation in pentacene single crystals and anthradithiophene films(2020)82 cited
- → Singlet Fission in Tetraaza-TIPS-Pentacene Oligomers: From fs Excitation to μs Triplet Decay via the Biexcitonic State(2019)32 cited
- → Roles of Octabutoxy Substitution and J-Aggregation in Stabilization of the Excited State in Nickel Phthalocyanine(2014)16 cited
- → The formation of ClOO following the photoexcitation of aqueous OClO studied by two-color, time-resolved resonance Raman spectroscopy(2000)35 cited
- → Theory of Transient Excited State Absorptions in Solid Pentacene with Implications for Singlet Fission(2017)4 cited