碱基诱导激基缔合物带振动结构的荧光发射  

RNA and Bases Induced Vibrational Structures of Excimer Fluorescence

作　　者：雷学工[1] 谢锐强[1] 刘有成[1] 

机构地区：[1]兰州大学化学系

出　　处：《化学学报》1989年第10期1032-1034,共3页Acta Chimica Sinica

基　　金：国家自然科学基金;教委资助优秀年青教师基金资助课题

摘　　要：分子内及分子间激发态的相互作用是当前光化学和光物理的关键主题，已报道的分子内及分子间激基缔合物的荧光发射均为无结构的宽峰，这种缺乏振动结构的现象是由于激基缔合物态的相对短的寿命和振动的不稳定特征。Significant vibrational structures of fluorescence emission of excimer of 1, 3-di(α- naphthyl)propane(1) in 1:1 methanol-water binary solvent has been induced by the addition of RNA or its constitutive bases. It is suggested that RNA and base molecules induce the 1 molecules to 'freeze' with proper conformation and give a definite excited vibration, and this process was promoted by hydrophobic effect. Inductive vibrational structure formation can be prevented by the addition of β-CD, but is not disturbed by the addition of α-CD, indicating partial inclusion of 1 molecules by β-CD.

关 键 词：RNA 碱基诱导 激基缔合物 振动结构 荧光发射 分子间相互作用 环糊精 包络作用 

分 类 号：Q522[生物学—生物化学] O641.3[理学—物理化学]