Abstract
The interactions of phentylacetylene and phenylacetylene−α−d1 with Si(100)−2×1 have been studied as a model system to mechanistically understand the adsorption of conjugated π-electron aromatic substitutions on Si(100)−2×1. Vibrational signatures show that phenylacetylene covalently binds to the surface through a [2+2]-like cycloaddition pathway between the external C≡C and Si=Si dimer, forming styrene-like conjugation structure which was further supported by the chemical-shift of C 1s core level. These experimental results are consistent with the density-functional theory [B3LYP/6−311//+G(d)] calculations. The resulting styrene-like conjugation structures may possibly be employed as an intermediate for further organic syntheses and fabrication of molecular architecture for modification and functionalization of Si surfaces, or as a monomer for polymerization on Si surfaces.
Description
This is the published version. Copyright 2003 American Physical Society
Citation
Tao, Feng, Ming Hua Qiao, Zhen Hua Li, Lei Yang, Yu Jing Dai, Hai Gou Huang, and Guo Qin Xu. "Adsorption of Phenylacetylene on Si(100)-2×1: Reaction Mechanism and Formation of a Styrene-like π-conjugation System." Phys. Rev. B Physical Review B 67.11 (2003). http://dx.doi.org/10.1103/PhysRevB.67.115334