The results of investigation of the luminescence under photo- and electroexcitation for four new compounds are presented. The spectral properties and photoluminescence are studied in ethanol, chloroform solutions and in films formed by thermovacuum deposition (TVD). The phosphorescence of compounds is investigated in ethanol at 77K temperature. The phosphorescence times of molecules are given. The electroluminescence is obtained in multilayered structure ITO/PEDOT/NPD/L /Ca/Al. It is shown, that spectral region of the photoluminescence of TVD films and electroluminescence coincide. Relations of electroluminescence efficiency with molecule structure, photoluminescence quantum yield and possibility of thermally activated delayed fluorescence are discussed.
Photophysical and lasing properties of the well known PM567, PM580 and PM697 and three new
dipyrromethene derivatives are presented. The laser efficiency and spectrum characteristics were investigated as
functions of dye concentration and pumping intensity in ethanol solutions under second harmonic of Nd-YAG-laser.
Laser characteristics and photostability for PM567 are presented also in the solid state matrixes
The laser properties and photostability of R6G was investigated in polymer solid-state matrix consisted from copolymers methylmethacrylate (MMA) with 2-hydroxyethylmethacrylate (HEMA) in the 1:1 ratio and in hybrid polymer consisted from the same monomers MMA+HEMA and tetraethoxysilane (TEOS) The 2-nd harmonic of a Nd-YAG laser was used for pumping of active media. It was shown that laser efficiency of R6G in both type of matrix is comparable whereas the laser lifetime of R6G in hybrid material is noticeably longer then in P(MMA+HEMA).