Conducting polymers IX: Optical properties, dielectric constants and conduction mechanism of poly (N, N′-Bis-salphinyl 2, 6-diaminipyridine-3, 5-diamini-1, 2, 4-trizole)

Poly(N,N′-Bis-salphinyl 2,6-diaminipyridine-3,5-diamini-1,2,4-trizole) (PBDPT) is synthesized starting with 2,6-diamino-pyridine using thionyl chloride (SOCl₂) as an oxidizing agent and then is polymerized with 3,5-diamino-1,2,4-triazole. The chemical structure of the produced PBDPT is confirmed by spectroscopic analyses techniques. The average molecular weight of PBDPT is determined using ¹H NMR technique. The optical investigations of PBDPT showed two absorption peaks and two remarkable emission peaks. The oscillator strength of the absorption peaks is calculated and is found to be 4.4 × 10¹² and 1.96 × 10¹² for the peaks at 9.19 × 10¹⁴ and 7.54 × 10¹⁴ Hz, respectively. The energy gap (E_g) is found to be 2.66 eV. Direct current electrical conductivity (σ_DC), alternating current electrical conductivity (σ_AC) and conduction mechanisms are investigated in the temperature range 298–373 K