Molecular anchor Cu-S formed on a thiophene mediated Si(111)-(7x7) surface.
Thiophene molecule selectively binds to the adjacent adatom-rest atom pair on the Si(111)-(7x7) surface through its alpha-carbon atoms, leading to the covalent attachment of a C-S-C linkage and remaining C=C (beta-carbon) bond onto the surface. Photoemission studies show that Cu atom readily adsorbs onto the S atom of the functional group to form the Cu-S molecular anchor in two forms: one points away from the thiophene C=C group; the other points toward the C=C group.
Zhang
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Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore. chmzy@nus.edu.sg
Yong
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Xu
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Gao
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Wang
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Wee
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