Abstract
The paper presents the results of experimental studies of the effect of selective photo-excitation on the diffusion of molecules of organic dyes Rhodamine 6G and Oxazine 1 perchlorate through silica gel. The experimental results are compared with the theoretical model presented in our previous work, which describes a decrease in the diffusion rate of molecules being excited by laser radiation and brought into triplet state. The experimental data obtained in the course of the present study are in qualitative agreement with the model just mentioned. It was shown that after selective photo-excitation of Rhodamine 6G molecules and their transition into triplet state, the diffusion rate decreased by 40% compared with molecules in the ground state.
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