- 作者: Keqiang Ding, Qingfei Wang, Zhenbin Jia, Na Tian, Ning Wang, Ruting Tong, Xinkui Wang and Huibo Shao*
- 作者服務機構: Department of Chemistry, Capital Normal University, Beijing 100037, P. R. China
- 中文摘要: In this paper, Schiff bases were investigated using cyclic voltammetry (CV) and impedance electrochemical spectroscopy (EIS) techniques by means of self-assembled monolayers for the first time, where a 0.1 M KCl solution and the redox couple of Fe(CN)63-/Fe(CN)64- were used as the electrolyte and probing-pin, respectively. The monolayers formed by the employed Schiff base were proved to be relatively stable, and its electrochemical response in the studied system with different pH values was also described clearly with CV and EIS plots. The results show that the monolayer of Schiff bases could exist in the solution with pH value from 2 to 10. In the EIS measurement in the concentration range from 10-5 M to 5 ’ 10-4 M, a nearly linear relationship between the charge transfer resistance (Rct) and the logarithm concentration of Cu2+ was observed, suggesting that Cu2+ could be titrated with the EIS method quasi-quantitatively. The phenomenon agreed with the former report very well. Using the self-assembled monolayers to study Schiff bases with the electrochemical method is the major contribution of our work.
- 英文摘要: --
- 中文關鍵字: Schiff bases; Self-assembled monolayer; Cyclic voltammetry; Impedance spectroscopy; Complexation.
- 英文關鍵字: Schiff bases; Self-assembled monolayer; Cyclic voltammetry; Impedance spectroscopy; Complexation.