Spectroscopic and theoretical calculations have shown that the self-aggregation of tartrazine molecules occurs in an aqueous and water-dimethylsulphaxide solution with a hypochromic effect in their electronic spectra. The deformation of the absorption spectra is accompanied by long-wave broadening. The absorption band of the dye E102 self-aggregates corresponds to the maxima λmax=463nm and λmax=483nm. Studies of the linear dichroism spectra have established that tartrazine self-aggregates, which have a needle-like structure, have optical activity. These data are the passport characteristics of self-assembled tartrazine molecules and they can be used to determine the nativity of dye self-aggregates. It is established that by selecting the concentration and ratios of binary solvent mixtures, it is possible to regulate the number of molecules in the self-aggregated dye molecules. The integration of tartrazine molecules into self-aggregates occurs by Van der Waals forces.

The spectral and optical characteristics of 4,4′ substituted stilbene and diphenylpolyenes were determined depending on the nature of the substituents. It is established that as a result of the dipole-dipole interaction of Van der Waals forces and the entrainment of the electron energies of molecules in the studied compounds, a botochromic shift of the adsorption and luminescence spectra is carried out. It is determined that for 4,4′ substituted arylethylene molecules with protonadonnor substituted groups, high values of the quantum yield of luminescence are observed, which are recommended for their use as fluorescence probes.

Complex carrot processing technology “Mirzoi krasny” along with concentrated and powdered natural dye rich in mineral elements and biologically active substances obtained carrot powder and transparent juice used in the food industry. Based on obtaining the absorption spectrum of dyes, it was found that the main coloring pigment of the dye, along with β, are also α and γ-carotenoids.A method of sterilization of concentrated carrot dye based on an IR gausted object has been developed.

Experimentally and quantum chemical calculations have established that the main ways of deactivation of the electron excitation energy for 4,4′-substituted AE with electronic acceptor derivatives are, along with trans–sic and isomerization, the transition of an electron from a singlet excited state to the ground state with fluorescent radiation. For molecules with electrodonor substituents, an intercombination S-T electron transition occurs with the observation of phosphorescent radiation. It was found that an increase in the number of ethylene bonds in the structure of aryl-polyene processes without radiative internal conversion deactivation of energy.