Polytriphenylamines synthesized by interfacial and microemulsion oxidative polymerization

Two triphenylamine-based polymers were successfully prepared by the interfacial and microemulsion oxidative polymerization of triphenylamine and 4-(diphenylamino)benzyl 2-bromo-2-methylpropanoate. Ammonium peroxodisulfate ((NH₄)₂S₂O₈) was used as a chemical oxidant and dichloromethane/water was used as a solvent. Sodium dodecyl benzene sulfonate was employed as a surfactant in the microemulsion system. Polytriphenylamines were characterized via Fourier transform infrared (FTIR) spectra and ¹H-NMR and UV–vis absorption spectroscopy. Molecular weights were determined by gel permeation chromatography and redox properties were studied by cyclic voltammetry. The surface morphology of thin polymer films was determined by atomic force microscopy.