| Abstract
| - The self-directed growth of organic molecules on silicon surfaces allows for the rapid, parallel production ofhybrid organic−silicon nanostructures. In this work, the formation of benzaldehyde- and acetaldehyde-derivednanostructures on hydrogen-terminated H−Si(100)-2×1 surface is studied by scanning tunneling microscopyin ultrahigh vacuum and by quantum mechanical methods. The reaction is a radical-mediated process thatbinds the aldehydes, through a strong Si−O covalent bond, to the surface. The aldehyde nanostructures aregenerally composed of double lines of molecules. Two mechanisms that lead to double line growth areelucidated.
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