Functionalized fullerenes on silicon surfaces

• Published in: Surface science Vol. 405; no. 2; pp. L526 - L531
• Main Authors: Upward, M.D, Moriarty, P, Beton, P.H, Birkett, P.R, Kroto, H.W, Walton, D.R.M, Taylor, R
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 15-05-1998; Amsterdam Elsevier Science; New York, NY
• Subjects: Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Fullerenes; Physics; Scanning tunneling microscopy; Silicon; Single crystal surfaces; Solid surfaces and solid-solid interfaces; Solid-fluid interfaces; Surface relaxation and reconstruction; Surface structure and topography; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Fullerenes; Scanning tunneling microscopy; Silicon; Single crystal surfaces; Surface relaxation and reconstruction; Silver; Semiconductor materials; Adsorption; Phenylation; Experimental study; Surface structure
• ISSN: 0039-6028; 1879-2758
• DOI: 10.1016/S0039-6028(98)00144-7

We have investigated the influence of phenyl addends on the packing and adsorption of C
60 on a solid substrate. On the Ag/Si(111)-
(
3
×
3
)R30°
surface, the interactions of the unmodified part of the fullerene cages are not strongly affected by the addition of the phenyl groups although pronounced differences in molecular packing are observed. Phenylated C
60 may rotate to its optimum configuration and diffuse freely on this surface. In contrast it can neither rotate nor diffuse on Si(111)7×7, while on C
60/Si(111)–7×7 it can diffuse but the presence of the phenyl groups inhibits the formation of ordered layers.