| Abstract [eng] |
In this work, 4 naphthyridine-based electroactive organic compounds with donor and acceptor fragments connected via a phenyl bridge were synthesized and investigated: 10-(4-(1,8-naphthyridin-2-yl)phenyl)-3,6-di-tert-butyl-9H-carbazole, 10-(4-(1,8-naphthyridin-2-yl)phenyl)-3,6-di-tert-butyl-9,9-dimethyl-9,10-dihydroacridine, 10-(4-(1,8-naphthyridin-2-yl)phenyl)-10H-phenothiazine and 10-(4-(1,8-naphthyridin-2-yl)phenyl)-10H-phenoxazine. The chemical structures of the compounds were confirmed by nuclear magnetic resonance, mass and infrared spectroscopy methods, thermal properties were investigated by differential scanning calorimetry and thermogravimetric analysis. The compounds are thermally stable, glass transition temperatures reach 80–137 ℃, and destruction 360–416 ℃. The photophysical and electrochemical properties of the materials were investigated, the energies of singlet and triplet excitons were calculated, 2,81–3,21 eV and 2,62–2,71 eV, the nature of photoluminescent emission was determined, and the energies of ionization potentials are 5,46–5,71 eV. The photoluminescence peaks of the material layers are at 478–588 nm and the quantum yields are 1–29%. 10-(4-(1,8-Naphthyridin-2-yl)phenyl)-3,6-di-tert-butyl-9,9-dimethyl-9,10-dihydroacridine had the best properties of all the compounds investigated. The technological scheme of the latter compound is designed and the peculiarities of occupational safety and health are described. |
