Department of Chemistry, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
J Am Chem Soc. 2010 Apr 7;132(13):4524-5. doi: 10.1021/ja910462x.
Surface junction effects on the electron conduction of p-phenylene-bridged bis(terpyridine)iron oligomers terminated with a ferrocene moiety were quantitatively analyzed by employing three different surface-anchoring terpyridine ligands. The dependence of the electron-transfer rate constant for oxidation of the ferrocene moiety, k(et), on the distance between the electrode surface and the ferrocene moiety, x, showed that the attenuation factor, beta(d), which indicates the degree of reduction of k(et) with x, was approximately 0.018 in all cases. However, the absolute k(et) value depended strongly on both electronic and steric factors of the surface-anchoring ligand.
通过采用三种不同的表面锚定三吡啶配体，定量分析了表面连接效应对带有二茂铁部分的 p-联苯桥联双（三联吡啶）铁低聚物的电子传导的影响。二茂铁部分氧化的电子转移速率常数 k(et)对电极表面和二茂铁部分之间距离 x 的依赖性表明，衰减因子 β(d)，其表示 k(et)随 x 的降低程度，在所有情况下都约为 0.018。然而，绝对 k(et)值强烈取决于表面锚定配体的电子和空间因素。
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