The Raman excitation profile spectrum of β‐carotene in the preresonance region: Evidence for a low‐lying singlet state
The Raman excitation profile spectrum of β‐carotene in the preresonance region: Evidence for a low‐lying singlet state
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预共振区β-胡萝卜素的拉曼激发谱：低位单线态的证据
DOI：
10.1063/1.434800
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发表时间：
1977
影响因子：
4.4
通讯作者：
G. E. Leroi
中科院分区：
文献类型：
--
作者：
R. J. Thrash;H. Fang;G. E. Leroi
在预共振区（16 900-19 000 cm−1）得到了反式β -胡萝卜素ν1波段的拉曼激发谱。在光谱中发现了五个特征，它们被解释为低洼激发态1Ag的振动结构，其起源在17230±100 cm−1附近。这对应于1Bu - 1Ag的能隙为3470±100 cm−1，这可能有助于解释β -胡萝卜素的非荧光。
The Raman excitation profile spectrum of the ν1 band of trans‐β‐carotene has been obtained in the preresonance region (16 900–19 000 cm−1). Five features are found in the spectrum which are interpreted as vibrational structure of a low‐lying excited 1Ag state with its origin near 17 230±100 cm−1. This corresponds to a 1Bu−1Ag energy gap of 3470±100 cm−1, and may help account for the nonfluorescence of β‐carotene.