INTRAMOLECULAR ELECTRON-TRANSFER REACTION IN DIMETHYLAMINOBENZONITRILE

被引:4
作者
BARBON, A
NORDIO, PL
POLIMENO, A
机构
[1] Physical Chemistry, University of Padua, via Loredan 2
来源
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1993年 / 234卷
关键词
D O I
10.1080/10587259308042899
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
The fluorescence emission of dimethylaminobenzonitrile in polar solvents is analysed in terms of a model which is a microscopic generalization of the Grabowski two-level kinetic scheme. The ground and the lowest excited state are described by adiabatic potential surfaces, defined in terms of an internal torsional coordinate and a solvent polarization coordinate. The potential energy functions are given by the energy of the isolated molecule plus a contribution due to the electrostatic stabilization in the polar solvent. The interconversion process between the two minima of the potential surface corresponding to the excited singlet state, i.e. a planar state with a low dipole moment and a strongly polar charge transfer state, is described by a stochastic operator. The emission features are interpreted by a minimal set of parameters, both for radiative and non-radiative channels.
引用
收藏
页码:69 / 78
页数:10
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