The Rotation Mobility of the Guest Molecules and its Reactivity in the Thermal Reaction in the Solid Matrix

Abstract

Characteristic times of the thermal reaction and the molecular rotation for the guest molecules have been measured in polystyrene films. Rotation mobility of molecules was determined from the relaxation of the light induced optical anisotropy of the photoselected samples. Close agreement of the activation energies and characteristic times of thermal reaction and molecular rotation was observed. By the comparison of the induced optical anisotropy of the initial and photoconverted molecules the angles of the rotation of the molecular dipole transition moment in the instant of the elementary act of the photochemical conversion were determined.