Intermolecular dynamics of condensed state: study of temperature effect on anisotropy relaxation by vibration spectroscopy

Authors

Bakhodir Eshchanov, National University of Uzbekistan, Chirchik State Pedagogical InstituteFollow
Shavkat Otajonov, National University of UzbekistanFollow
Jurat Gayipov, Chirchik State Pedagogical InstituteFollow
Dilafruz Xudoyberdiyeva, Chirchik State Pedagogical InstituteFollow
Sarvarbek Qurbanbayev, National University of UzbekistanFollow

Abstract

As a result of the experimental study of the spectra of anisotropic scattering of light, a character of orientation movement of molecules in aromatic hydrocarbons has been analyzed. The obtained results have been interpreted from the viewpoint of a model of inhibited rotation and the contributions of the rotational and vibrational degrees of freedom to a molecule spectrum have been estimated. With increasing temperature of liquids under study and approaching a critical state, the rotational degrees of freedom "freeze", and the vibrational degrees have become more significant.

First Page

388

Last Page

411

References

1. Valiev K.A., Eskin L.D. Rotational Diffusion of Molecules and the Scattering of Light in Liquids. I. Spherical Molecules. Optics and Spectroscopy, Vol. 12, 429–436 (1962).

2. Starunov V.S. Scattering of light due to anisotropy fluctuations in low-viscosity liquids. Sov. Phys. Docl., Vol. 8, 1206–1216 (1964).

3. Kivelson D., Madden P.A. Light Scattering Studies of Molecular Liquids. Ann. Rev. Phys. Chem., Vol. 31, 523–558 (1980).

4. Kevilson D. Depolarized scattering from liquids: rotation, collisions and hydrodynamics. Statist. Phys., Vol. 52, Issue 5-6, 1285–1305 (1988).

5. Wang C.H. A continuum mechanics theory of depolarized and polarized Rayleigh-Brillouin light scattering spectra of supercooled liquids. Mol. Phys., Vol. 58, Issue 3, 497–508 (1986).

6. Friedrich V., Tarjus G., Kevilson D. Study of the integrated intensity of tetrahedral molecules. J. Chem. Phys., Vol. 93, Issue 4, 2246–2257 (1990).

7. Nishra V.K., Singh K.M., Sudhanshu S.N.S. Study or intermolecular forces in some organic liquids. Proc. 33-rd Solid State Phys. Symp., Bombey. Jan. 1-4, Vol. 33, Issue 102 (1991).

8. Dreyfus C., Aouadi A., Pick R.M., Berger T., Patkowski A., Steffen W. Light scattering by transverse waves in supercooled liquids and application to metatoluidine. Eur. Phys. J. B, Vol. 9, 401–419 (1999).

9. Rubio J.E., Baonza V.G., Taravillo M., Nunez J., Caceres M. Dynamic light scattering in liquid and supercooled diphenylmethane. J. Chem. Phys., Vol. 120, Issue 3, 1426–1435 (2004).

\bibitem{10. Ni Y.X., Chen J.K., Gao L. Anomalous optical forces on the anisotropic Rayleigh particles. Optics Express, Vol. 22, Issue 22, 27355–27364 (2014).

11. Mourou G., Malley M.M. Molecular orientational relaxation times in liquids. Optics Communications, Vol. 13, Issue 4, 412–417 (1975).

12. Han-Kwang Nienhuys. Orientational relaxation of liquid water molecules as an activated process. J. Chem. Phys., Vol. 112, Issue 19, 8487–8494 (2000).

13. Ho P.P., Yu W., Alfano R.R. Relaxation of the optical Kerr effect of anisotropic molecules in mixed liquids. Chemical Physics Letters, Vol. 37, Issue 1, 91–96 (1976).

14. Nikiforov B.G., Safiullin G.M., Shmelev A.G., Leontev A.V., Lobkov V.S. Optical control of the anisotropy of the orientation of molecules in a liquid. JETP Letters, Vol. 86, 666–669 (2008).

15. Perrot M., Besnard M., Lascombae J., Bouachir M. Orientational and induced depolarized Rayleigh scattering of some anisotropic molecules in their liquid state. Can. J. Phys., Vol. 59, 1481–1486 (1981).

16. Chen J., Wong K.Y. Study of intermolecular interactions in liquid nitrobenzene by depolarized hyper-Rayleigh scattering. J. Chem. Phys., Vol. 22, 174505-1-5 (2005).

17. Elola M.D., Ladanyi B.M. Molecular dynamics study of polarizability anisotropy relaxation in aromatic liquids and its connection with local structure. J. Phys. Chem. B, Vol. 110, 15525–15541 (2006).

18. Linde B.J., Skrodzka E.B., Lezhnev N.B. Vibrational Relaxation in Several Derivatives of Benzene. Int. J. Thermophys., Vol. 33, 664–679 (2012).

19. Schmidtke B., Petzold N., Kahlau R., Rossler E.A. Reorientational dynamics in molecular liquids as revealed by dynamic light scattering: From boiling point to glass transition temperature. J. Chem. Phys., Vol. 139, 084504-1-9 (2013).

20. Schmidtke B., Rossler E. Depolarized light scattering spectra of molecular liquids: Described in terms of mode coupling theory. J. Chem. Phys., Vol. 141, 044511-1-10 (2014).

21. Schmidtke B., Petzold N., Potzschner B., Weingartner H., Rossler E.A. Relaxation Stretching, Fast Dynamics, and Activation Energy: A Comparison of Molecular and Ionic Liquids as Revealed by Depolarized Light Scattering. J. Phys. Chem. B, Vol. 118, 7108–7118 (2014).

22. Otajonov Sh., Eshchanov B.X., Isamatov A.S. On possible models of thermal motion of molecules and temperature effect on relaxation of optical anisotropy in bromine benzene. Ukraine Journal of Physics, Vol. 56, Issue 11, 1178–1188 (2011).

23. Gordon A., Ford R. The Chemist's Companion: A Handbook of Practical Data, Techniques, and References. John Wiley and Sons inc., 560 pp. (1972).

24. Weissberger A., Proskaue E. Organic Solvents: Physical properties and methods of purification. Interscience publishers, 520 pp. (1955).

25. Keil B. Laboratorni teechnika, Organicke chemie. Akademie ved Praga, 751 pp. (1963).

26. Eshchanov B., Otajonov Sh., Isamatov A., Babajanov D. Dynamics of relaxation processes in liquids: Analysis of oscillation and orientation spectra. Journal of Molecular Liquids, Vol. 202, 148–152 (2015).

27. Eshchanov B., Otajonov Sh., Isamatov A. Structural changes in the liquid paradibrombenzole. Uzbek Journal of Physics, Vol. 6, Issue 2, 134–137 (2014).

28. Eshchanov B., Otajonov Sh., Solieva N., Isamatov A. Intensity distribution in the spectrum of molecular light scattering and relaxation effects in liquids. Ukraine Journal of Physics, Vol. 60, Issue 8, 795–798 (2015).

29. Perrot M., Besnard M., Lascombe J. Orientational and induced depolarized Raleigh scattering of some anisotropic molecules in the their liquid state. Can. J. Phys., Vol. 59, Issue 10, 1481–1486 (1981).

30. Habibullaev P.K., Otajonov Sh., Eshchanov B.Kh., Aivazova A.A. On the mechanism of formation of distant portions of the wings of the molecular components of the depolarized light scattering in liquids. Reports of the Russian Academy of Sciences, Vol. 354, 617–619 (1997).

31. Ancelm A.I. Theory of electro-optical phenomena in nonpolar liquids. JETP., Vol. 17, Issue 6, 489–506 (1947).

32. Anisimov M.A. Critical Phenomena in Liquid Crystals. Moscow, Nauka, 96 pp. (1987).

33. Eshchanov B.Kh. The study of relaxation processes in some liquids by molecular scattering of light. Acta NUUz, Issue 3, 43–56 (2005).

34. Klimontovich Y.L. Turbulent motion and chaos structure. Moscow, Nauka, 328 pp. (1990).

Recommended Citation

Eshchanov, Bakhodir; Otajonov, Shavkat; Gayipov, Jurat; Xudoyberdiyeva, Dilafruz; and Qurbanbayev, Sarvarbek (2020) "Intermolecular dynamics of condensed state: study of temperature effect on anisotropy relaxation by vibration spectroscopy," Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences: Vol. 3: Iss. 3, Article 8.
DOI: https://doi.org/10.56017/2181-1318.1119