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Modification Of Au Surfaces Using New Ferrocene Derivatives

机译:使用新的二茂铁衍生物修饰Au表面

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Gold surfaces have been modified by self-assembled techniques. Here the adsorption time of diasteroisomers (1R, 3S)-l-ferrocenyl-3-mefhyl-4,4-diphenyl-2,5-dioxacyclopentane and (15, 3S)-l-ferrocenyl-3-methyl-4,4-diphenyl-2,5-dioxacyclopentane (Scheme 1, 3a and 3b) at a Au surface in ethanol solution was controlled. This study was followed by electrochemical impedance spectroscopy (EIS) and X-ray photoelectron spectroscopy (XPS) analysis. The method used for the surface modification was the control of exposure time of a Au surface in the modifier/ethanol solution. It was demonstrated by EIS and XPS that the Au surface was modified with mixture of compounds 3a + 3b, avoiding the electron transference in the interface. It was also observed that the organometallic molecule indeed had been adsorbed on the Au surface. In addition, evidence seems to conclude that the molecule-Au interaction is through the electrons of cyclopentadienyl moiety, where the oxygen atoms are near the air-molecule interface and the iron atom is near the Au surface. This type of interaction of the ferrocene derivatives with gold surfaces has not been reported by any other author.
机译:金表面已通过自组装技术进行了修改。在此,非对映异构体(1R,3S)-1-二茂铁基-3-甲基-4,4-二苯基-2,5-二氧杂环戊烷和(15,3S)-1-二茂铁基-3-甲基-4,4-的吸附时间控制在乙醇溶液中Au表面上的二苯基-2,5-二氧杂环戊烷(方案1、3a和3b)。这项研究之后是电化学阻抗谱(EIS)和X射线光电子能谱(XPS)分析。用于表面改性的方法是控制Au表面在改性剂/乙醇溶液中的暴露时间。 EIS和XPS证明,化合物3a + 3b的混合物对Au表面进行了修饰,从而避免了界面电子的转移。还观察到有机金属分子确实已经吸附在Au表面上。另外,证据似乎可以得出结论,分子-Au相互作用是通过环戊二烯基部分的电子进行的,其中氧原子靠近空气-分子界面,铁原子靠近Au表面。二茂铁衍生物与金表面的这种相互作用尚未有其他作者报道。

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