Tsvetanova Martina, Syromyatnikov Alexey G, van der Meer Thomas, van Houselt Arie, Zandvliet Harold J W, Klavsyuk Andrey L, Sotthewes Kai
Physics of Interfaces and Nanomaterials, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500AE Enschede, The Netherlands.
Faculty of Physics, Lomonosov Moscow State University, Moscow 119991, Russian Federation.
Langmuir. 2022 Aug 23;38(33):10202-10215. doi: 10.1021/acs.langmuir.2c01356. Epub 2022 Aug 11.
We have studied decanethiolate self-assembled monolayers on the Au(001) surface. Planar and striped phases, as well as disordered regions, have formed after exposing the Au surface to a decanethiol solution. The planar phases that we observe have a hexagonal symmetry and have not been previously reported for thiols on the Au(001) surface and have lower coverage compared to that of the other known thiol planar phases such as the square α phase. The striped phases that we observe are similar to the previously reported β phase but still feature unit cells that cannot be modeled as the archetype, and the coverage is also somewhat lower. The disordered decanethiolate regions are more dynamic compared to the ordered phases, confirmed with () spectroscopy. This suggests that in these regions the coverage is too low in order to form ordered decanethiolate phases. Our findings contribute to the growing family of possible decanethiol formations on the Au(001) surface, for which still less is known compared to the extensive overview present for the Au(111) surface.
我们研究了在Au(001)表面上的癸硫醇自组装单分子层。将金表面暴露于癸硫醇溶液后，形成了平面相和条纹相以及无序区域。我们观察到的平面相具有六边形对称性，此前尚未见有关于在Au(001)表面上硫醇的此类报道，并且与其他已知的硫醇平面相（如方形α相）相比，其覆盖率更低。我们观察到的条纹相与先前报道的β相相似，但仍然具有无法按原型建模的晶胞，并且覆盖率也略低。与有序相相比，无序的癸硫醇区域更具动态性，这通过（）光谱得以证实。这表明在这些区域中，覆盖率过低以至于无法形成有序的癸硫醇相。我们的研究结果有助于丰富在Au(001)表面上可能形成的癸硫醇种类，与对Au(111)表面的广泛研究相比，目前对Au(001)表面的了解仍然较少。
