Molecular anchor Cu-S formed on a thiophene mediated Si (111) - (7×7) surface

Abstract

Thiophene molecule selectively binds to the adjacent adatom-rest atom pair on the Si (111) - (7×7) surface through its α -carbon atoms, leading to the covalent attachment of a C-S-C linkage and remaining CC (ß -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 CC group; the other points toward the CC group. © 2008 American Institute of Physics.