Dissociative Adsorption of 3-Chloropropyne on Si(111)-(7 x 7): Binding and Structure

作者：Zhang Yongping^*; Chen Zhiqian; Man Yuhong; Guo Peitao

来源：Langmuir, 2013, 29(6): 1868-1874.

DOI：10.1021/la304018a

• Binding configuration
• Density functional theories (DFT)
• Dissociative adsorption
• Functional molecules
• Functionalizations
• Functionalized
• High-resolution electron energy loss spectroscopy
• Hybrid devices
• Interface chemistry
• Model system
• Multi-functional molecules
• Organic layers
• Room temperature
• Si (1 1 1)
• Silicon surfaces
• Triple bonds

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-CH2Cl) on the Si(111)-(7 x 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 x 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.

• 出版日期2013-2-12
• 单位西南大学