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Self-assembly of trimetallic nitride template fullerenes on surfaces studied by STM
- Source :
- Surface Science. 601:2750-2755
- Publication Year :
- 2007
- Publisher :
- Elsevier BV, 2007.
-
Abstract
- Trimetallic nitride template fullerenes have been deposited onto a variety of substrates in order to elucidate the substrate-fullerene interactions. We have investigated self-assembled island formation and molecular detail of Er3N@C80 and Sc3N@C80 on Ag/Si(1 1 1), Au(1 1 1)/mica, Si(1 1 1), and Si(0 0 1) using variable temperature scanning tunnelling microscopy (STM). At room temperature, the fullerenes self-assemble into monolayer-high hexagonal close-packed islands on Ag-passivated Si(1 1 1) whereas annealing at elevated temperatures (250-300 °C) is necessary for the self-assembly of close-packed islands on Au(1 1 1). Intra-molecular resolution of the fullerenes has been achieved at liquid nitrogen temperature on Ag/Si(1 1 1) and already at room temperature on Si(0 0 1), when the rotation of the fullerenes is frozen. Whereas the bonding between the fullerenes and Si surfaces is mainly covalent, it appears to be mainly van-der-Waals on the other surfaces. © 2006 Elsevier B.V. All rights reserved.
Details
- ISSN :
- 00396028
- Volume :
- 601
- Database :
- OpenAIRE
- Journal :
- Surface Science
- Accession number :
- edsair.doi.dedup.....8aea9cbef6608e88e61b73e36d35c6ab
- Full Text :
- https://doi.org/10.1016/j.susc.2006.12.035