Tunable Thiolate Coordination Networks on Metal Surfaces
Tunable Thiolate Coordination Networks on Metal Surfaces
复制标题
DOI：
10.1002/cnma.202000267
复制
发表时间：
2020-05-25
期刊：
影响因子：
3.8
通讯作者：
Fuchs, Harald
中科院分区：
文献类型：
--
作者：
Meng, Xiangzhi;Kolodzeiski, Elena;Fuchs, Harald
以苯六硫醇（BHT）为原料在金属表面合成了硫代酸盐配位网络（TCNs），并利用低温扫描隧道显微镜（STM）、x射线光电子能谱（XPS）和密度泛函理论对其进行了分析。吸附后，金属表面的巯基发生去质子化，形成金属-硫配位键。提高表面温度触发BHT的完全脱氢，促进了tcn的形成。在Ag（111）上获得了[Ag-3(C6S6)](n)的TCN，并表现出良好的热稳定性。在Cu（111）上，鉴定出两个tcn ([Cu-6(C6S6)](n)和[Cu-8（C6S6)](n),）。有趣的是，在Cu（111）表面沉积和热退火过程中，可以通过调节表面温度来精确控制这两种TCNs的构建。我们的研究结果揭示了金属表面对配位网络形成的重要影响。
Thiolate coordination networks (TCNs) were synthesized on metal surfaces using benzenehexathiol (BHT) and analyzed by cryogenic scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS) as well as density functional theory. Upon adsorption, the deprotonation of the thiol groups occurred on the metal surface with the formation of metal-sulfur coordination bonds. Increasing the surface temperature triggered the complete dehydrogenation of BHT and promoted the formation of TCNs. On Ag(111), the TCN of [Ag-3(C6S6)](n) was achieved and showed good thermal stability. On Cu(111), two TCNs ([Cu-6(C6S6)](n) and [Cu-8(C6S6)](n),) were identified. Interestingly, the construction of the two TCNs on Cu(111) can be precisely controlled by adjusting the temperature of the surface during deposition and thermal annealing. Our results reveal the significant influence of the metal surface on the formation of coordination networks.