Preparation and Applications of PoPD Micro/Nano Related Structures

Ortho-phenylendiamine (oPD), with two adjacent -NH₂ groups in the benzene ring, is one of typical aniline derivatives. PoPD has huge advantages in the respects of post processing and modification because PoPD owns more active sites than poly-aniline. As an important conductive polymer, PoPD has attracted increasing attention due to its special conductive mechanism and important role in chemical production. Herein, the progress in preparation and applications of PoPD micro/nano related materials are summarized. The progress in the preparation of PoPD micro/nano structures by using chemical oxidation method, reprecipitation method and microfluidic methods are focused. In combination with our research results, this paper summarizes the mechanism of polymerization, the process of oxidation-reduction and the mechanism of self-assembly of PoPD materials. Their applications in the field of sensors, bio-imaging and supercapacitors are also summarized. The current issues and the future trends of the preparation of PoPD micro/nano related materials are also analyzed which will provide useful references for the new research of PoPD micro/nano related materials.