Dichroism of absorption and polarization of phosphorescence of molecules of the closed form of nitrobenzospirothiopyran |
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Authors: | Yu D Khamchukov V G Luchina V S Marevtsev |
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Institution: | (1) Institute of Engineering Acoustics, Belarussian Academy of Sciences, 13 prosp. Lyudnikova, 210023 Vitebsk, Belarus';(2) N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, 117977 Moscow, Russian Federation |
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Abstract: | The spectral-polarization characteristics of absorption and phosphorescence of molecules of the initial form of nitro-substituted
indolinospirobenzothiopyran were studied in oriented polyethylene films and in solutions with different polarity. An oscillator
model of the electron transitions responsible for the formation of absorption and luminescence spectra was suggested. It was
established that the principal differences in the spectral and photophysical properties of the compound studied and its oxygen-containing
analog are associated with the fact that the electronegativity of the S atom is lower than that of the O atom.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1143–1146, June, 1997. |
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Keywords: | spirobenzopyrans phosphorescence polarization dichroism |
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