In recent years,electrodes modified by organic molecule polymer is calling a hotspot in chemical sensor research.With covalent grafting in organic molecules on the surface of the electrode,layer can form stable,high quality hybrid connection and the traditional electrode materials will be given more new sensing function.P-hydroxy benzoic acid has an oxidation reactive functional groups of carboxyl and a reducing functional hydroxy,and therefore have higher oxidation reduction activity.It can be modified on ...