Secondary Dopants of Electrically Conducting Polyanilines

Young-Gi Kim; Hai-Long Nguyen; Patrick Kinlen

doi:10.3390/polym13172904

Secondary Dopants of Electrically Conducting Polyanilines

Polymers (Basel). 2021 Aug 28;13(17):2904. doi: 10.3390/polym13172904.

Authors

Young-Gi Kim¹, Hai-Long Nguyen², Patrick Kinlen³

Affiliations

¹ Department of Chemistry, Delaware State University, Dover, DE 19901, USA.
² US Army Future Command, Picatinny Arsenal, Wharton, NJ 07806, USA.
³ Department of Chemistry, University of Missouri, Columbia, MO 65211, USA.

Abstract

Secondary dopants and the doping methods were identified for increasing the electrical conductivity of a highly processable and a primarily doped polyaniline dinonylnaphthalene sulfonic acid (PANI-DNNSA). The secondary doping was carried out using film, solution, and vapor doping methods. The doping methods and functional groups of secondary dopants were observed to play a critical role for inducing electrical characteristics of polyaniline. When secondary film doping method and p-toluenesulfonic acid were used, the electrical conductivity of the secondary doped polyaniline was measured to be increased from 0.16 to 334 S/cm. A novel vapor annealing doping method was developed to incorporate secondary dopants into solution cast polyaniline films.

Keywords: electrically conducting polymers; polyaniline; secondary dopants.