Flowerlike Organic-Inorganic Coating Responsible for Extraordinary Corrosion Resistance via Self-assembly of an Organic Compound

Organic-inorganic coating has been desirable for practical applications in electrochemistry and analytical science. Up to this investigation, a report of a "flowerlike" structure made from organic components has been rarely reported. Here, we proposed a novel strategy to fabricate the flowerlike hybrid coating through the combination of plasma electrolysis and dip chemical coating in which 4-[4-(phyenylazo)phenylazo]-o-cresol (PPC) was used as the organic component. The formation of organic molecules was initiated effectively on the rough inorganic coating by the charge transfer complexes which facilitate the nucleation of organic molecules. The quantum chemical analysis was implemented to discuss the binding sites activated by PPC. The electrochemical resistance was improved significantly due to the synergistic influences of the inorganic coating via plasma electrolysis and organic coating via self-assembly of PPC.