Premium
Electrochemical Study of Schiff Bases by Means of Self‐Assembled Monolayers
Author(s) -
Dmg Keqiang,
Wang Qingfei,
Jia Zhenbm,
Tian Na,
Wang Ning,
Tong Ruting,
Wang Xinkui,
Shao Huibo
Publication year - 2002
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200200029
Subject(s) - chemistry , monolayer , schiff base , dielectric spectroscopy , cyclic voltammetry , electrochemistry , electrolyte , analytical chemistry (journal) , redox , inorganic chemistry , electrode , crystallography , chromatography , biochemistry
In this paper, Schiffbases 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) 6 3− /Fe(CN) 6 4− 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 de scribed 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 relation ship between the charge transfer resistance (R ct ) and the logarithm concentration of Cu 2 +was observed, suggesting that Cu 2 + 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.