Conducting polymers X: Dielectric constant, conduction mechanism and correlation between theoretical parameters and electrical conductivity of poly (N, N′-bis-sulphinyl p …

Poly (N, N′-bis-sulphinyl p-phenylenediamine-2, 6-diaminipyridine)(PBSPDP) and poly (N, N′-bis-sulphinyl p-phenylenediamine-3, 5-diamine-1, 2, 4-trizole)(PBSPDT) were synthesized by Micheal addition polymerization method using thionyl chloride and characterized by the FTIR and 1 H NMR techniques. The number average molecular weight (M ̇ n) of BSPDP and BSPDT were calculated using 1 H NMR data and are found to be∼ 3984 and 2156 g/mole, respectively. DC and AC electrical conductivities were measured at different temperatures confirming the semiconductor behaviors due to the delocalization of electrons of N, S and O atoms. The dielectric constants of the two polymers were investigated and the σ AC was found 5.8× 10− 5 Ω− 1 m− 1 for PBSPDP and 9.62× 10− 5 Ω− 1 m− 1 for PBSPDT at 90° C and applied frequency about 3 MHz. A theoretical study was used to calculate LUMO …