Metalphthalocyanines Anchored Poly(1,3,4-oxadiazole arylene ether)s: Optical and Electrical Studies

New phenolphthalein based poly(1,3,4-oxadiazole aryl ether) (PHOP) containing side chain carboxylic acid groups derived from 2,5-bis(4-fluorophenyl)-1,3,4-oxadiazole and 2-(bis(4-hydroxyphenyl)methyl)benzoic acid have been synthesized from typical aromatic nucleophilic substitution reaction. The PHOP seizes high dielectric constant (300 at 50 Hz) by the assistance of polar pendants and its findness in advance studies needs some structure modification with high dielectric constant metalphthalocyanine (MPc, M=Co, Ni & Cu) macrocycle to come out as further enhancement of dielectric constant and become photoactive polymer embedded metalphthalocyanine (PPEMP1–9). The molecular weight of PHOP was determined by gel permeation chromatography and is found to be 33375 ( M w / M n = 2.48). All the tailor-made polymers were well characterized by Solid State UV–Vis, thermogravimetric analysis and XRD analysis. FTIR and NMR spectroscopic techniques confirms MPc units are grafted into the polymer matrix and act as a utmost light catching materials in the visible to near IR region (400–900 nm) with remarkable drop off in optical band gap and exhibited impressive thermal properties. The variation in the AC conductivity was explained by electron hopping model and values are in the range of 3.16 × 10 −5 –4.78 × 10 −5 (S/m) at 5 MHz measured at 20 °C.