Abstract
Mechanofluorochromism and thermofluorochromism of boron difluoride 3-methylamino-1,3-diphenyl-2-propen-1-one have been detected. Upon grinding of crystals, they exhibit a significant change in their excitation spectra. A dependence of the luminescence spectrum on the wavelength of the exciting light has been found, which indicates the occurrence of luminescence centers of two different structures. Upon heating of a grinding sample, a further evolution of its luminescence and excitation spectra has been observed. The mechanism of the observed effects has been proposed to be associated with dissociation and formation of J-aggregates.
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This work was supported by the Russian Foundation for Basic Research, project no. 18-33-00281 mol_a.
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Mirochnik, A.G., Tretyakova, G.O., Svistunova, I.V. et al. Mechanofluorochromism and Thermofluorochromism of Boron Difluoride 3-Methylamino-1,3-diphenyl-2-propen-1-one. Opt. Spectrosc. 125, 512–515 (2018). https://doi.org/10.1134/S0030400X18100168
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DOI: https://doi.org/10.1134/S0030400X18100168