Formation of order molecular nanostructures on the Si(111)-(7×7) surface by patterned assembly

Zhang, Y. P.; Yong, K. S.; Lai, Y. H.; Xu, G. Q.; Wang, X. S.
October 2004
Applied Physics Letters;10/4/2004, Vol. 85 Issue 14, p2926
Academic Journal
The well-defined and patterned copper clusters formed on the Si(111)-(7×7) surface have been employed as a template for selective binding of molecules, forming ordered molecular nanostructures. Scanning tunneling microscopic studies show that thiophene molecules preferentially bind to the copper clusters through the S–Cu interaction involving S lone-pair electrons. Large-scale two-dimensional thiophene molecular nanostructures can be obtained using this patterned assembly technique. Our experiments demonstrate the feasibility for controllable growth of ordered molecular nanostructures on Si(111) surface.


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