Oriented cluster formation of endohedral Y@C{sub 82} metallofullerenes on clean surfaces
- Nagoya Univ. (Japan)
- Tohoku Univ., Sendai (Japan)
An oriented head-to-tail cluster formation of an endohedral yttrium metallofullerene, Y@C{sub 82}, on a Cu(111)I x 1 clean surface has been observed directly by the use of a scanning tunneling microscopy (STM) under ultrahigh-vacuum conditions. The STM observation reveals that the Y@C{sub 82} molecules preferentially form dimers and one-dimensional clusters at the step edge of the Cu(111) surface. The observed intermolecular distance (11.2 {+-} 0.5 A) is smaller than that of the simple Y@C{sub 82}, Y@C{sub 82} van der Waals distance (11.4 A), indicating the presence of a strong interfullerene interaction. The STM results suggest the presence of strong dipole-dipole and charge-transfer interactions among Y@C{sub 82} fullerenes. Such a molecule has a great similarity to the `superatom` features proposed theoretically in a semiconductor heterostructure. 30 refs., 5 figs.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 111218
- Journal Information:
- Journal of Physical Chemistry, Vol. 99, Issue 38; Other Information: PBD: 21 Sep 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mass spectroscopic and ESR characterization of soluble yttrium-containing metallofullerenes YC{sub 82} and Y{sub 2}C{sub 82}
Electron transport in endohedral metallofullerene Ce@C{sub 82} single-molecule transistors