Korepanova A. A.1, Laptinskiy K. A.1,2, Dolenko T. A.1,2
1Department of Physics, Lomonosov Moscow State University, Moscow, Russia
2Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics, Moscow, Russia
Email: korepanova.aa20@physics.msu.ru
This paper presents the study of the influence of molecules of six solvents with different acidity and basicity on the optical properties of carbon dots. Analysis of the obtained IR absorption spectra, optical density spectra and photoluminescence spectra of carbon dots in solvents showed a significant dependence of the quantum yield of photoluminescence and the energy of vibrational transitions of the surface groups of carbon dots on the acidity of the solvent. The obtained results are explained by the strengthening of hydrogen bonds between fluorophores and solvent molecules with the increase of acidity. Keywords: Carbon dots, absorption spectroscopy, photoluminescence, acidity, basicity, quantum yield of photoluminescence, chemical equilibrium constant.
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Дата начала обработки статистических данных - 27 января 2016 г.