Solvent effects on the S_0→S_2 absorption spectra of β-carotene
Solvent effects on the S_0→S_2 absorption spectra of β-carotene作者机构:Center for Condensed-Matter Science and TechnologyHarbin Institute of Technology International Center for Materials PhysicsChinese Academy of Sciences
出 版 物:《Chinese Physics B》 (中国物理B(英文版))
年 卷 期:2010年第19卷第1期
页 面:262-267页
核心收录:
学科分类:07[理学] 070203[理学-原子与分子物理] 0805[工学-材料科学与工程(可授工学、理学学位)] 0704[理学-天文学] 0702[理学-物理学]
基 金:Project supported by the National Natural Science Foundation of China (Grant No. 10774034)
主 题:solvent effects absorption spectra β-carotene
摘 要:Absorption spectra of β-carotene in 31 solvents are measured in ambient conditions. Solvent effects on the 0-0 band energy, the bandwidth, and the transition moment of the S0 → S2 transition are analysed. The discrepancies between published results of the solvent effects on the 0-0 band energy are explained by taking into account microscopic solutesolvent interactions. The contributions of polarity and polarizability of solvents to 0-0 band energy and bandwidth are quantitatively distinguished. The 0- 0 transition energy of the S2 state at the gas phase is predicted to locate between 23000 and 23600 cm^-1.