Solvent effects on the S_0→S_2 absorption spectra of β-carotene  

作　　者：刘伟龙 王德敏 郑植仁 李艾华 苏文辉 

机构地区：[1]Center for Condensed-Matter Science and Technology,Harbin Institute of Technology [2]International Center for Materials Physics,Chinese Academy of Sciences

出　　处：《Chinese Physics B》2010年第1期262-267,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 10774034)

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.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.

关 键 词：solvent effects absorption spectra Β-CAROTENE 

分 类 号：O561.3[理学—原子与分子物理]