THE NATURE OF ELECTRONIC SPECTRA OF SELF-COMBINED RIBOFLAVIN MOLECULES
Keywords:
riboflavin, self-aggregation, luminescence, fluorescence, spectrum, absorption, structure, hydrogen bonds, electronic transitionsAbstract
The self-assembly of riboflavin molecules in aqueous and binary mixtures of solvents was studied by a spectroscopic method. It is shown that the self-assembly of vitamin B2 molecules occurs as a dipole-dipole and strong inductive-inductive interaction, as a result of which a resonant splitting occurs by excitation of electronic levels of riboflavin molecules. For self-aggregated molecules in the spectra of linear dichroism, hidden adsorption bands are identified, on the basis of which schemes of electronic transitions to absorption are constructed.
References
"1 Plato. Selected dialogues. - Moscow: AST, 2006, 512 p.
Lebedev-Stepanov P.V., Kadushnikov R.M., Molchanov S.P., Rubin N.I., Shturkin N.A., Alfimov M.V. Self-assembly of nanoparticles in the microvolume of colloidal solution: physics, modeling, and experiment .Russian nanotechnologies. 2011, No. 1-2, pp. 83.
Lebedev-Stepanov P.V., Kadushnikov R.M., Molchanov S.P., et al. Self-assembly of nanoparticles in a microvolume of a colloidal solution: physics, modeling, experiment. Russian Nanotechnologies. 2013, Vol. 8, No. 3-4, pp. 5 – 23.
Kakhharov A.M., Bakhramov S.A., Makhmanov U.K., Ismailova O.B., Gafurov Sh.P., Kokkharova M.U. Study of the process of self-assembly of fullerene C60 molecules in the binary mixture ETHANOL + BENZENE. Proceeding of the Intern. Conference. Samarkand, September 22-24, 2016, pp. 58.
Makhmanov U.K., Ismailova O.B., Kakhharov A.M., Bakhramov S.A., Gafurov Sh.P., Kokkharova M.U. Self-organization of fullerene C60 molecules in a binary mixture of ETHANOL + BENZENE"". Proceeding of the Intern. Conference. Samarkand, September 22-24, 2016, pp. 59.
Gordon A., Ford R. Sputnik chemist. Moscow, Mir, 1976, 54 p. [in Russian]
Astanov S., Sharipov M.Z., Fayzullayev A.R., Kurtaliyev E.N., Nizomov N.N., et al. Spectroscopic study of photo and thermal destruction of riboflavin. Journal of Structure, 2014, Issue 1071, pp. 133 – 138.
Stewert J.J.P. Molecular structure matching by simulated annealing. I. A comparison between different cooling schedules. Journal of Computer-Aided Molecular Design. 1990, Vol. 4, pp. 295-330
Astanov S., Turdiyev M.R., Sharipov M.Z., Kurtaliyev E.N., Nizomov N.N. Effect of acidity of a medium on riboflavin photo destruction. J. Russian Physics, 2015, Vol. 58, 1 November
Astanov S., Prischepov A.S.. Optical-spectral characteristics of the associates, adsorbed on a vertical surface of colloidal solutions in terms of orienting action of the Earth gravity. Opt.pectre., 1999, Vol. 71, No. 2, pp. 279 – 281.
Astanov S. Photonics of molecules of food colorings. Thesis for the degree of Doctor of Physical and Mathematical Sciences. Tashkent 2003, 53-55p.
Astanov S.Kh., Sharipov M.Sh., Fayzullaev A.R., Kurtaliyev E.N., Nizomov N.N. Thermal destruction of riboflavin in various aggregate states. J. Applied Spectroscopy, 2014, No. 1, p. 81.
Astanov S.Kh., Kosimova G.K., Turdiev M.R. Spectroscopic manifestations of the self-assembly of the food coloring of tartrazine. Development of science and technology. 2017, No. 3, pр. 93.
"
