Electroactive self-assembled monolayers on gold via bipodal dithiazepane anchoring groups
Electroactive self-assembled monolayers on gold via bipodal dithiazepane anchoring groups
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DOI：
10.1021/la801165b
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发表时间：
2008-08-19
期刊：
影响因子：
3.9
通讯作者：
Meade, Thomas J.
中科院分区：
文献类型：
--
作者：
Bertin, Paul A.;Georganopoulou, Dimitra;Meade, Thomas J.
合成了新的二硫氮杂环庚烷官能化的二茂铁基-苯乙炔基低聚物1和2。这些二茂铁衍生物的自组装单分子膜（SAMs）已被研究的X射线光电子能谱，椭圆偏振仪，和循环伏安法。XPS表明，在金电极上的二硫氮杂环庚烷锚定分子的单层含有金硫醇盐物质。循环伏安法的自组装膜的特点是稳定的电活性单层，即使是单组分的自组装膜1和2，更理想的响应记录的双组分自组装膜稀释十一烷醇。在这些自组装膜中，在逐渐提高的扫描速率下峰分裂的小变化使得二硫氮杂环庚烷桥接的氧化还原物种有希望成为进一步研究具有双足锚定的分子导线的候选者。
Novel dithiazepane-functionalized ferrocenyl-phenylethynyl oligomers 1 and 2 have been synthesized. Self-assembled monolayers (SAMs) of these ferrocene derivatives have been studied by X-ray photoelectron spectroscopy, ellipsometry, and cyclic voltammetry. It has been shown by XPS that monolayers of the dithiazepane-anchored molecules on gold electrodes contain gold-thiolate species. Cyclic voltammetry of the SAMs were characteristic of stable electroactive monolayers even for single-component SAMs of 1 and 2, with the more ideal responses recorded for the two-component SAMs diluted with undecanethiol. The small variation in peak splittings at progressively higher scan rates in these SAMs makes dithiazepane-bridged redox species promising candidates for further studies on molecular wires with bipodal anchoring.