Acta Phys. -Chim. Sin. ›› 2002, Vol. 18 ›› Issue (09): 846-849.doi: 10.3866/PKU.WHXB20020917

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The Electrochemical Behavior of Self-assembled Monolayers of Schiff Base

Wang Ning;Ding Ke-Qiang;Tong Ru-Ting;Shao Hui-Bo   

  1. Department of Chemistry, Hebei Normal University, Shijiazhuang 050016;Department of Chemistry, Capital Normal University, Beijing 100037
  • Received:2001-12-27 Revised:2002-04-16 Published:2002-09-15
  • Contact: Shao Hui-Bo E-mail:huiboshao@263.net

Abstract: The gold electrode was modified with a derivative compound of Schiff base. Cyclic voltammetric technique was used to investigate the electrochemical behavior of the electrode. An electrochemical irreversible reduction/oxidation process of the schiff base molecule in 0.1 mol•L-1 KCl solution was found. Electrochemical study shows that the apparent electron-transfer rate constant (kapp) decreases with the increasing of assembled time. Considering the effecting factors on the apparent electron-transfer rate, we deduced that the main factor effecting Schiff bases electrochemical behavior is the interaction force between the Schiff bases molecules. This interaction affects the changing of structure during the electrochemical redox process.

Key words: Schiff base, Self-assembled monolayers (SAMs), Cyclic voltammetry,  Redox, Apparent electron transfer rate constant