title: Dissociative adsorption of 3-chloropropyne on Si(111)-(7 × 7): binding and structure.
abstract: To achieve silicon functionalization for the development of hybrid devices, multifunctional molecules may be employed to attach to the silicon surfaces. It is important to get a fundamental understanding about the molecule/silicon interface chemistry and the binding configuration. The surface chemistry of 3-chloropropyne (HC≡C-CH(2)Cl) on the Si(111)-(7 × 7) surface, as a model system for understanding the interaction of the multifunctional molecules with a silicon surface, was studied by X-ray photoelectron spectroscopy (XPS), high-resolution electron energy loss spectroscopy (HREELS), and density functional theory (DFT). The 3-chloropropyne adsorbs molecularly on the silicon surface at 110 K. A chemical reaction clearly occurs such that 3-choloropropyne bonds onto the Si(111)-(7 × 7) surface at room temperature by forming C-Si linkage through the cleavage of C-Cl bond, and preserving the ethyne C≡C triple bond. This functionalized silicon surface may act as an intermediate for the growth of multiple organic layers by further attaching other functional molecules.
authors: School of Materials Science and Technology, Southwest University, Chongqing 400715, People's Republic of China. zhangyyping@yahoo.com
authors: Yongping
authors: Y
authors: Zhang
authors: Zhiqian
authors: Z
authors: Chen
authors: Yuhong
authors: Y
authors: Man
authors: Peitao
authors: P
authors: Guo
mesh_terms: D000327:Adsorption; D000480:Alkynes / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D055668:Photochemical Processes; D012825:Silicon / Q000737:chemistry*; D013696:Temperature
chemical_list: D000480:Alkynes; C022030:methylacetylene; D012825:Silicon