“…Therefore, it is highly desirable to develop anticorrosion coatings, which are effective, nontoxic and environment-friendly. The invention of polyaniline [1][2][3], polypyrrole [4][5][6], polythiophene [7,8], and other polymers offers new solutions to this problem. Polyaniline, in particular, is regarded as one of the most commercially promising materials.…”