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1 March 2001 Transient Absorption from the 1Bu State of All-trans-β-carotene Newly Identified in the Near-infrared Region
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Abstract

We have attempted subpicosecond time-resolved absorption spectroscopy of all-trans-β-carotene in organic solvents in the 820–1060 nm region and found novel transient absorption features which lived in subpicosecond time scales. A first component that appeared immediately after excitation showed a lifetime of 190 ± 10 fs in n-hexane in agreement with the 1Bu lifetime that had been determined by fluorescence upconversion spectroscopy (195 ± 10 fs). (Kandori et al. [1994] J. Am. Chem. Soc. 116, 2671–2672.) Therefore, this component is assigned to a transient absorption from the 1Bu state.

Jian-Ping Zhang, Leif H. Skibsted, Ritsuko Fujii, and Yasushi Koyama "Transient Absorption from the 1Bu State of All-trans-β-carotene Newly Identified in the Near-infrared Region," Photochemistry and Photobiology 73(3), 219-222, (1 March 2001). https://doi.org/10.1562/0031-8655(2001)073<0219:TAFTUS>2.0.CO;2
Received: 13 July 2000; Accepted: 1 November 2000; Published: 1 March 2001
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