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Photo physical processes in retinoids related to visual chromophores


, : Photo physical processes in retinoids related to visual chromophores. Biofizika 27(5): 776-779

Fluorescence spectroscopy, pulse fluorometry and laser flash photolysis showed that in retinoids related to visual chromophores the main part (more than 90%) of the excitation energy is deactivated non-photophysically. 1Ag*--state is assumed as an intermediate state from which the excitation energy degrades. The fluorescence quantum yield of retinoids increases by a factor of 10-500 with decreasing the solution temperature from 293.degree. K to 84.degree. K. 1(n.pi.*).sbd.state is involved in the photophysical processes of retinal in dry nonpolar solvents.

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