Electrical Conducting Behaviour of Newly Synthesised p-Nitrophenol-Resorcinol-Formaldehyde Terpolyligand and its Polychelates

A.D. Kushwaha, V.V. Hiwase, A.

Abstract

The resin (abbreviated as PNPRF) was derived from acid catalyzed Polycondensation of p-nitrophenol (0.1M),resorcinol (0.2M) and formaldehyde (0.4M) using 1M HCl at 120-1250C. The chelates of Cr (III), Co (II), Ni (II), and Cu (II) were prepared by using metal salts and PNPRF ligand in DMF medium. The materials were characterised by using elemental analysis, magnetic studies and spectral analysis. In the present paper, electrical conductivity properties of terpolymer and its chelates were studied over a wide range of temperatures. The terpolymer resin and its chelates were found to show semi conducting behaviour. The activation energy of conduction was found to decrease in order [PNPRF] n> [Ni-PNPRF] n> [Co-PNPRF] n> [Cr-PNPRF] n> [Cu- PNPRF] n.