The chemical oxidative polymerization is a common method for preparation of conducting polyaniline. Aniline oligomers producted in the early stage have important effect on the morphology of the final products. The difference molecular structures of aniline oligomers and their self-assembly are the main reason which leads to different morphologies of the final products. Based on the current formation mechanisms of polyaniline micro/nanostructures

the formation of aniline oligomers and theirs influences on the morphology of polyaniline during the chemical oxidative polymerization process were summarized

the complexity of oligomerizationin the chemical oxidative polymerization and the difficulties existing in the study were also proposed.