Synthesis and characterization of a novel dopant (C3-ABSA) for synthesizing tubular polyaniline

4-(3-(4-((4-Nitrophenyl)azo)phenyloxy)propyl)aminobenzene sulfonic acid (C3 -ABSA) was synthesized by the reaction of 3-bromide-1-(4-((4-nitrophenyl)az o)phenyloxy)propane (B3) with sodium p-aminobenzene sulfonic acid (ABSA) an d acidification with hydrochloric acid. The C3-ABSA was characterized by FT IR, H-1-NMR and second ion mass spectrum (SIMS). The molecular formula of d ehydrated C3-ABSA was estimated to be ca. C21H20O6N4S by SIMS. Its decompos ition temperature was measured by TGA to be ca. 232 degreesC. It was found that tubular polyaniline (PANI) with a conductivity of 1.1 S/cm at room tem perature was successfully synthesized by in-situ doping polymerization in t he presence of C3-ABSA as a dopant.