Templating a face-centered cubic (110) termination of C60 |
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Institution: | 1. Department of Watershed Management Engineering, Faculty of Natural Resources, Tarbiat Modares University, P.O. Box 46417-76489, Noor, Iran;2. Department of Soil Sciences, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran |
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Abstract: | Scanning tunneling microscopy has been used to study C60 overlayers on TiO2(100)-(1 × 3). Initial adsorption preferentially occurs on O vacancies (Ti3+), evidencing a site-specific interaction dominated by substrate-adsorbate charge transfer. At saturation coverage the molecules are incommensurate with Ti3+ sites along 001], suggesting a delicate balance between intermolecular and substrate interactions. The unit cell of the C60 overlayer is 13.8Å× 10.0 ± 0.5Å, consistent with the first layer of fcc C60(110); molecules also adopt sites in the troughs of the (1 × 3) structure to form the second layer. |
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