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Citation: ZHOU Pei, HU Xiao-Ya, WANG Cheng-Yin, GUO Rong. Quantized Capacitance Charging of Monolayer-protected Clusters on Pt Ultramicroelectrode[J]. Chinese Journal of Applied Chemistry, ;2004, 21(2): 117-121. shu

Quantized Capacitance Charging of Monolayer-protected Clusters on Pt Ultramicroelectrode

1.
College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002

Corresponding author: HU Xiao-Ya,
Received Date: 10 April 2003
Available Online: 18 November 2003
Fund Project: 国家自然科学基金(20175023) (20175023)江苏省政府自然科学基金(BK2002045)资助项目 (BK2002045)

The behavior of quantized capacitance charging of the monolayer protected clusters(MPC) in tetrahydrofuran(THF) solution on the platinum ultramicroelectrode and bulk Pt electrode have been investigated for comparison. The results showed that MPC has many advantages over the bulk Pt electrode. With platinum microelectrode, there are six pairs of quantized capacitance charging peaks on the differential pulse cyclic voltammograms in 0.1 mol/L THF solution of hexanethiol protected MPC without electrolyte, and good electrochemical reversibility of the peaks could be observed even at high scan rate in cyclic voltammogram. The single potential step chronocoulometric experiments displayed that each quantized capacitance charging peak corresponds to one electron transfer across the interface of the MPC.
- platinum ultramicroelectrode,
- monolayer protected cluster,
- quantized capacitance charging
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