Comprehensive characterization of dodecylbenzene sulfonic acid-doped poly(m-toluidine) via chemical oxidative polymerization: Insights into optical, structural, morphological, thermal, and electrical properties

A detailed investigation was conducted on the synthesis and character development of dodecylbenzene sulfonic acid-doped poly(m-toluidine) (PMT-DBSA) by chemical oxidative through polymerization in an aqueous medium. Comprehensive exploration of optical, structural, morphological, thermal, and electrical properties. Stability assessment in NMP, THF and chloroform, with insights into the dedoping process in DMF. XRD analysis reveals high crystallinity in PMT-DBSA due to h-bonding formation across chains. Scanning electron micrograph highlights granule sizes and closed-packed structures, with a grain size of approximately 80 nm. Notably, peak conductivity was attained at 2.22*10−4 S/cm under specific conditions involving a 1:1 M ratio of oxidant to m-toluidine and 0.18 M DBSA. Additionally, a Schottky diode was fabricated based on PMT-DBSA utilizing aluminum as the Schottky contact and copper as the ohmic contact. Investigation of junction parameters yielded an ideality value of 3.9 and an impedance height of 1.97 eV.