Photo-physical properties of different types of vitamin A in solvent media

Importance of vitamin A, in dermal drugs and hygienic products, makes the investigation of specific and non-specific interactions of these compounds in their environment important, for practical applications. Therefore, in this paper absorption and emission spectra of two types of vitamin A, oil soluble and water soluble forms, were studied in different solvents. The solute’s photo-physical behavior depends strongly on the solute and solvent’s nature, along with the solvent–solute interactions. The solvatochromic method was used to investigate dipole moments of these samples, in ground and excited states. For understanding the effect of molecular interactions on spectral behaviors of these materials, in different solvent, and extent of solvent–solute interactions, the spectral variations were analyzed by means of linear solvation energy relationships concept proposed by Kamlet and Taft.