Abstract
An iodine-modified Au(111) surface, (I/Au(111)), was used as a substrate to prepare a C60 adlayer by self-organization in a benzene solution. A highly ordered C60 adlayer was successfully prepared due to the moderate C60-I/Au(111) interaction. Two lattice structures, (2√3 × 2√3)R30° and p(2 × 2), were imaged for this C60 adlayer. For the first structure, a featureless ball-like molecular shape was imaged, ascribed to the molecular rotation resulting from a symmetrical location between C60 and iodine atoms. For p(2 × 2) structure, the asymmetrical location of C60 with respect to the iodine atoms freezes the C60 molecules on the substrate, leading to a clear image of intramolecular structure. The intermediate iodine atoms in the C60/I/Au(111) adlayer can be desorbed by electrochemically reduction without significantly affecting the ordering of the C60 adlayer. However, the internal pattern of C60 disappears in the absence of iodine.
Original language | English |
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Pages (from-to) | 11611-11615 |
Number of pages | 5 |
Journal | Langmuir |
Volume | 24 |
Issue number | 20 |
DOIs | |
Publication status | Published - 2008 Oct 21 |
All Science Journal Classification (ASJC) codes
- General Materials Science
- Condensed Matter Physics
- Surfaces and Interfaces
- Spectroscopy
- Electrochemistry