Prof. Show-An Chen and Dr. Liang-Chang Lin
Polyaniline can be converted into a conducting form by either protonation of the imine site or oxidative doping at the amine site. Here, a new class of dopant is reported, ionic salts. An ionic-salt-doped polyaniline is obtained by mixing the emeraldine base of polyaniline and solutions of, for example, LiClO4, LiBF4, or Zn(ClO4)2 in 1-methyl-2-pyrrolidone, and then casting the solution to form films. Materials synthesis, film production, and the demonstration that the material is intrinsically, rather then ionically, conducting are discussed.