Comparative study of pure polyaniline with various oxidants by a template free method

Spontaneous adsorption–oxidation of gaseous elemental mercury via a conjugated unit –NH+˙–Cl*: creation and mechanisms

“…As shown in the UV-vis spectra (Fig. 3a), three main peaks at 278, 342, and 623 nm appeared in the curve of 11PANI, in which the peaks at 278 and 342 nm were assigned to the π–π* transitions within the quinoid and benzenoid functional groups, respectively, 29–31 while the peak at 623 nm was the n–π* transition of the quinoid functional groups. 32 By contrast, for the characteristic curve of 51PANI, its peaks at 278 and 623 nm were blue-shifted to 274 and 526 nm, respectively, and in particular, the absorbance at 274 nm was significantly enlarged.…”