Direct measurement of the lowest excited singlet state lifetime of all-trans-β-carotene and related carotenoids

Michael R Wasielewski; Lowell D. Kispert

doi:10.1016/0009-2614(86)80332-3

Direct measurement of the lowest excited singlet state lifetime of all-trans-β-carotene and related carotenoids

Michael R Wasielewski, Lowell D. Kispert

Northwestern University

Research output: Contribution to journal › Article

129 Citations (Scopus)

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
Pages (from-to)	238-243
Number of pages	6
Journal	Chemical Physics Letters
Volume	128
Issue number	3
DOIs	https://doi.org/10.1016/0009-2614(86)80332-3
Publication status	Published - Jul 25 1986

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ASJC Scopus subject areas

Physical and Theoretical Chemistry
Spectroscopy
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
Surfaces and Interfaces

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Wasielewski, M. R., & Kispert, L. D. (1986). Direct measurement of the lowest excited singlet state lifetime of all-trans-β-carotene and related carotenoids. Chemical Physics Letters, 128(3), 238-243. https://doi.org/10.1016/0009-2614(86)80332-3

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AB - 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.

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10.1016/0009-2614(86)80332-3