Semiconductor Physics, Quantum Electronics & Optoelectronics. 2006. V. 9, N 1. P. 073-078.
https://doi.org/10.15407/spqeo9.01.073

Absorption and photoluminescent spectra of dimethylaniline ethylene ketone dyes in isotropic solvents
M.P. Gorishnyi1, A.F. Shevchuk2, V.S. Manzhara1, A.V. Koval’chuk1, T.N. Koval’chuk3

1Institute of Physics, NAS of Ukraine, 46, prospect Nauky, 03028 Kyiv, Ukraine
2Vinnitsa State Agricultural University, 3, Sonyachna str., 21008 Vinnitsa, Ukraine
3V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 45, prospect Nauky, 03028 Kyiv, Ukraine

Abstract. Absorption and photoluminescent spectra of dimethylaniline ethylene ketone dyes of two types K 1 and K 2 in a series of isotropic solvents were studied. It was shown that the photoluminescent spectra depend both on nature of solvent (formation of associates with solvent owing to hydrogen bonds between the dye and alcohol or aggregates of dye molecules) and the dye concentration (concentration decay). The frequencies of electron transitions and frequency of intramolecular fluctuation were determined, and conclusions concerning the nature of absorption bands were made.

Keywords: absorption and photoluminescent spectra, dimethylaniline ethylene ketone dye, isotropic solvent.

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