“…The NPA was synthesized by chemical oxidative polymerization method (Gospodinova and Terlemezyan, 1998;Shukla et al, 2010;Hirotsugu and Hiromasa, 2011;Srinivas et al, 2012). Typically, 2M aniline (C6H5NH2) and 2M ammoniumpersulphate [(NH4)2S2O8], each prepared in 1 MHCl solution, were mixed in a beaker and by magnetically stirred for 1 h and kept at room temperature for 12 h. The polymer thus formed was filtered out, washed with de-ionized water, and dried at 60°C in oven for 30 min.…”