Mechanisms of the changes in the conformational composition and spatial reorientation of molecular components of a dicarbocyanine dye layer induced by heating or resonance photoexcitation

The effect exerted by temperature and time of heating and by a resonance photoexcitation on the relative concentration of the molecular components of a dicarbocyanine polymethine dye layer, the rate of variation of the orientation angle of components and its limiting value was studied. The model of the thermally and photo-induced rearrangement of the layer is developed.