PHYSICOCHEMICAL ASPECTS OF CREATION OF MODERN PHOTOSENSITIVE MATERIALS BASED ON POLYMETHINE DYES

The peculiarities of photophysical and photochemical properties of pol ymethine dyes, which determine their application as photosensitive mat erials in luminescent concentrators of light, fluorescent probes and l abels for intercalation of DNA, laser media, photoinitiators of polyme rization, electroluminescent media, are analyzed. The fundamental path ways of degradation of energy of electronic excitation are discussed p hotoisomerization, intersystem crossing and internal conversion, elect ron phototransfer lit the ion pairs, interaction of chromophores, homo geneous and dissimillar association The relationship between these fac tors and the structure of dyes and the nature of media is considered. Particular attention is devoted to creation and optimisation of colour ed polymeric photosensitive materials.