Modern trends in quasi-linear spectra studies

摘要: ABSTRACT The data of the theoretical and experimental investigations luminescence absorption spectra different organic compounds (aromatic hydrocarbons their derivatives, phthalocyanines porphyrins, polyenes, etc.) in frozen polycrystal solutions are summarized systematized. recent prove that quasi-line sets zero-phonon lines accompanied by vibrational repetitions when impurity arrangement provides insignificant heterogeneous line broadening electron–phonon interaction is sufficiently small. Extensive make it possible to conclude systems under consideration such conditions may be realised means a matrix modification near centres. characteristics (namely, well-resolved structure sensitivity internal external perturbations) shown use solving problems molecular crystal spectroscopy.