•  
  •  
 

Scientific Journal of Samarkand University

Abstract

The effect of light irradiation on the spectral-luminescent characteristics of some rhodamine dyes with a carboxyl group in solvents of various natures was studied. It has been established that under the influence of light irradiation in aqueous solutions of selected dyes, a decrease in the intensity of absorption and fluorescence with a simultaneous hypsochromic shift of the electronic spectra is observed.Under the same conditions, discolored solutions of rhodamine dyes in a binary solvent mixture of 1% water + 99% DMSO are reduced in color and, accordingly, absorbing and fluorescent capacity. The observed phenomenon is explained by the transition of molecules of rhodamine dyes from a lactone form to cationic.

First Page

26

Last Page

31

References

1. J.Guo, Zh.Wang, P.Sun, Q.Tang, H.Li, X.Wang, G.Guo, Q.Pu. Ionic polymer enhanced electrophoresis in plastic microchips for rapid and robust determination of rhodamine dyes. Sensors and Actuators B. 2017. V.250. p. 250–258. 2. P.K. Baviskar, J.B. Zhang, V. Gupta, S. Chand, B.R. Sankapal. Nanobeads of zinc oxide with rhodamine B dye as a senssolar cell application. Journal of Alloys and Compounds. 2012. V.510 p.33–37. 3. H.Kr. Singh, Sh.Aggarwal,. D.C. Agrawal, P.Kulria, S.K. Tripathi, D.K. Avasthi. Studies of swift heavy ion irradiation effect on Rhodamine 6G dye for dye sensitize solar cell application. Vacuum. 2013. V.87 p.21- 25 4. N. Nizamov. Lyuminessensiya assosiirovannыx molekul organicheskix krasiteley v rastvorax i plenkax. Samarkand: Zarafshon, 1997. 145 c 5. N.Nizomov. E.N.Kurtaliyev, A.A.Djamalova. Spektroskopicheskoye proyavleniye agregatov v rastvorax nekotoryx rodaminovыx krasiteley. SamDU ilmiy tadqiqotlar axborotnomasi. 2014 g. №5, s.59- 65. 6. N.Nizomov. E.N.Kurtaliyev, A.A.Djamalova. Spektroskopicheskoye proyavleniye mejmolekulyarnыx vzaimodeystviy v rastvorax rodaminovыx krasiteley karboksilnoy gruppoy. SamDU ilmiy tadqiqotlar axborotnomasi. 2017. №5, s.62 -68. 7. B.Song, Q. Zhang, W.-H.Ma, X.-J.Peng, X.-M.Fu, B.-Sh.Wang. The synthesis and photostability of novel squarylium indocyanine dyes. Dyes and Pigments. 2009. V.82, №3. p.396- 400. 8. Y.Yang, M.Wang, G.Qian, Zh.Wang, X.Fan. Laser properties and photostabilities of laser dyes doped in ORMOSILs. Optical Materials. 2004. V.24 p.621–628. 9. M.Gupta, S.Mula, T.K.Ghanty, D.B.Naik, A.K.Ray, A.Sharma, S.Chattopadhyay. Structure and solvent-induced tuning of laser property and photostability of a boradiazain dacene (BODIPY) dye. Journal of Photochemistry and Photobiology A: Chemistry. 2017. V.349. p.162- 170. 10. A.Vaysberger, E.Proskauer, Dj.Riddik, E.Tups. Organicheskiye rastvoriteli. IL, M.,1958. 520c. 11. A.Gordon, R.Ford Sputnik ximika. M. Mir, 1976 g. 571 s. 12. Dj. Kalvert, Dj. Pits. Fotoximiya. Per. s angl. Moskva: Mir, 1968. s.625 -628.

Included in

Physics Commons

Share

COinS