Selective bonding of pyrazine to silicon(100)-2x1 surfaces: The role of nitrogen atoms

作者：Huang, HG; Huang, JY; Ning, YS; Xu, GQ^*

来源：Journal of Chemical Physics, 2004, 121(10): 4820-4825.

DOI：10.1063/1.1781117

• DIELS-ALDER REACTION
• CYCLOADDITION CHEMISTRY
• SI(100)-2X1 SURFACE
• ORGANIC MONOLAYERS
• ADSORPTION
• SI(001)
• BINDING
• MOLECULES
• CHEMISORPTION
• ACETONITRILE

The covalent binding of pyrazine on Si(100) have been investigated using high-resolution electron energy loss spectroscopy (HREELS) and x-ray photoelectron spectroscopy. Experimental results clearly suggest that the attachment occurs exclusively through the bonding of the two para-nitrogen atoms with the surface without the involvement of the carbon atoms, as evidenced from the retention of the (sp(2)) C-H stretching mode in HREELS and a significant down shift of 1.6 eV in the binding energy of N 1s. The binding mechanism for pyrazine on Si(100) demonstrates that reaction channels for heteroatomic aromatic molecules are strongly dependent on the electronic properties of the constituent atoms.

• 出版日期2004-9-8