Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu, Mie, Japan.
Langmuir. 2013 Apr 2;29(13):4275-82. doi: 10.1021/la305092g. Epub 2013 Mar 19.
A dyad consisting of a tripod-shaped trithiol with an adamantane core and a terminal ferrocenyl group linked through ap-phenyleneethynylene bridge was synthesized. The trithiol formed a stable self-assembled monolayer (SAM) on Au(111), wherein each molecule is bound to the surface by three-point adsorption using all sulfur atoms, with confirmation by PM-IRRAS and XPS analyses. Cyclic voltammetry of the SAM showed a line shape typical of an ideal adsorbed system, that is, a monolayer with negligible electrostatic interaction among the terminal ferrocenyl groups. Thus, a rare SAM was achieved, in which the component molecules were isolated from adjacent molecules without the coadsorption of nonelectroactive molecules.
合成了一种由三脚架形三硫醇和金刚烷核心以及通过联苯乙炔桥连接的末端二茂铁基组成的二联体。三硫醇通过三点吸附（每个分子使用三个硫原子）在 Au(111)表面形成稳定的自组装单层（SAM），通过 PM-IRRAS 和 XPS 分析得到证实。SAM 的循环伏安法显示出理想吸附体系的典型线性形状，即末端二茂铁基之间几乎没有静电相互作用的单层。因此，实现了一种罕见的 SAM，其中组成分子与相邻分子隔离，而没有非活性分子的共吸附。
