СИНТЕЗ ПОЛИ – (1,4-ДИАМИННАФТАЛИНА)МЕТОДОМ ОКИСЛИТЕЛЬНОЙ ПОЛИМЕРИЗАЦИИ И ИЗУЧЕНИЕ ЕГО СВОЙСТВ

Abstract

The aim of this study was to synthesize free of metals polymeric organic materials that possess electrical conductivity. The nanoscale poly-(1,4-diaminonaphthalene) was synthesized using the oxidative polymerization method. The reaction was carried out in a hydrochloric acid solution at 0°C, with potassium persulfate used as the oxidizing agent. The polymers were characterized using various techniques, including FT-IR, UV-Vis, TGA, NMR, EPR and SEM. It was found that the polymerization of 1,4-diaminonaphthalene occurs through the formation of N–C and N=C. UV studies revealed differences in the polymer chain conformations and polaron states. The UV-Vis spectra showed strong absorption bands at 250 and 340 nm, associated with π→ π* and n→ π* transitions, respectively. Electron Paramagnetic Resonance detected the presence of radicals in the polymer chain and established their position on the nitrogen atom. The micro-morphology study of the polymer revealed an irregular porous structure with pore sizes less than 5 μm. Additionally, it was demonstrated that the nanopolymers are thermally stable up to 140°C.