Daukiya Lakshya, Teyssandier Joan, Eyley Samuel, El Kazzi Salim, Rodríguez González Miriam Candelaria, Pradhan Bapi, Thielemans Wim, Hofkens Johan, De Feyter Steven
Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven-University of Leuven, Celestijnenlaan, 200 F, 3001 Leuven, Belgium.
Nanoscale. 2021 Feb 7;13(5):2972-2981. doi: 10.1039/d0nr07310e. Epub 2021 Jan 28.
Covalent functionalization is one of the most efficient ways to tune the properties of layered materials in a highly controlled manner. However, molecular chemisorption on semiconducting transition metal dichalcogenides remains a delicate task due to the inertness of their surface. Here we perform covalent modification of bulk and single layer molybdenum disulfide (MoS) using chemical activation of diazonium salts. A high level of control over the grafting density and yield on MoS basal plane can be achieved by this approach. Using scanning probe microscopies and X-ray photoelectron spectroscopy we prove the covalent functionalization of MoS.
共价功能化是一种以高度可控方式调节层状材料性能的最有效方法之一。然而，由于半导体过渡金属二硫属化物表面的惰性，分子在其上的化学吸附仍然是一项棘手的任务。在此，我们利用重氮盐的化学活化对块状和单层二硫化钼（MoS）进行共价修饰。通过这种方法，可以实现对MoS基面接枝密度和产率的高度控制。我们使用扫描探针显微镜和X射线光电子能谱证明了MoS的共价功能化。
