The electrochemical characteristics investigation of 1, 3-propylene thiol/polyluminol modified gold electrode
HUI Xiaoning, FU Wen, ZHENG Xingwang*
(School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi′an 710119, Shaanxi, China)
Abstract:
After the 1,3-propanedithiol was self-assembled on the gold electrode surface, the pinhole film was formed on the electrode surface and could be used to electrochemically polymerize luminol inside this pinhole film. The electrocatalytic activity of this composite film for ascorbic acid was studied by cyclic voltammetry (CV).The results showed that, compared with the pure poly-luminol modified gold electrode, the 1,3-propanedithiol/poly-luminol composite films exhibited the higher electrocatalytic activity for ascorbic acid. Under the optimal experimental conditions, the detection limit for ascorbic acid was 0.3 μmol/L.
KeyWords:
1,3-propanedithiol; gold electrode; luminol molecule; pinhole film; electrochemical polymerization
