期刊
SURFACE SCIENCE
卷 573, 期 2, 页码 176-182出版社
ELSEVIER
DOI: 10.1016/j.susc.2004.09.022
关键词
gold; electrochemical methods; metal-electrolyte interfaces; self-assembly; X-ray photoelectron spectroscopy
We present a study of the influence of an electrostatic potential across the Au(1 1 1)/4,4'-dithiodipyridine (PySSPy)-SAM/0.01 M NaOH interface on the electron binding energies of the N 1s and S 2p orbitals of the adsorbate, as probed by X-ray photoelectron spectroscopy (XPS). The observed systematic binding energy shift for N(1s) with electrode potential of -0.9eV/V has been assigned to a so-called electrochemical shift, i.e., an apparent shift of the binding energy due to the potential drop in the electric double layer. No systematical shift was observed for the S(2p) core level of the thiol with electrode potential. The results are contrasted by measurements in 0.1 M H2SO4, where no electrochemical shift was found for the protonated nitrogen. (C) 2004 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据