Abstract
A 4 ps, 510 nm laser pulse was used to electronically excite toluene solutions of all-trans-β-carotene, canthaxanthin, and β-8'-apocarotenal. The 430-510 nm electronic absorption band of each carotene bleaches immediately upon excitation and recovers with single-exponential kinetics: τ = 8.4 ± 0.6 ps for all-trans-β-carotene, 5.2 ± 0.6 ps for canthaxanthin, and 25.4 ± 0.2 ps for β-8'-apocarotenal. The results are discussed in terms of the excited singlet state properties of carotenoids.
Original language | English (US) |
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Pages (from-to) | 238-243 |
Number of pages | 6 |
Journal | Chemical Physics Letters |
Volume | 128 |
Issue number | 3 |
DOIs | |
State | Published - Jul 25 1986 |
Funding
The authorsw ish to thank ProfessorsT . Moore and D. Gust of Arizona State University for helpful discussions concerningt his problem. This work was supported by the Division of Chemical Sciences,O ffice of Basic Energy Science,D epartmento f Energy under contractsW -31-109-Eng-38( ANL) and DE-ASOS-76ER04062 (U of A).
ASJC Scopus subject areas
- General Physics and Astronomy
- Physical and Theoretical Chemistry