Polymer complexes. LXVII: electrical conductivity and thermal properties of polymer complexes of quinoline azo dye

A novel series of divalent transition metals (Cu 2+, Co 2+ and Ni 2+) polymer 
complexes of azo ligand named 5-(2, 3-dimethyl-1-phenylpyrazol-5-one azo)-8-
hydroxyquinoline (Q) have been synthesized. The azo quinoline ligand (Q) and polymer 
complexes are characterized by various physicochemical techniques. The thermal 
properties of the ligand and its isolated polymer complexes are studied using 
thermogravimetric analysis. The physicochemical investigations elucidate that the azo 
ligand acts as a neutral bis (bidentate) ligand. The polymer complexes are found to be 
octahedral geometry. The change in the ac electrical conductivity, loss tangent and dielectric 
properties are studied upon heating in temperature region 298–550 K and frequency 
ranging from 0.1 to 100 kHz, moreover, the mechanism of conduction is determined.