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Issue 7, 2010
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Controlling intermolecular spin interactions of La@C82 in empty fullerene matrices

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Abstract

The ESR properties and crystal structures of solid-state La@C82 in empty fullerene matrices were investigated by changing the concentration of La@C82 and the species of an empty fullerene matrix: C60, C70, C78(C2v(3)), C82(C2) and C84(D2d(4)). The rotational correlation time of La@C82 molecules tended to be shorter when La@C82 is dispersed in larger fullerene matrices because large C2n molecules provide more space for La@C82 molecules for rotating. La@C82 dispersed in a hcp-C82 matrix showed the narrowest hyperfine structure (hfs) due to the ordered nature of La@C82 molecules in the C82 crystal. On the other hand, in a C60 matrix, La@C82 molecules formed clusters because of the large different solubility, which leads to the ESR spectra being broad sloping features due to strong dipole–dipole and exchange interactions.

Graphical abstract: Controlling intermolecular spin interactions of La@C82 in empty fullerene matrices

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Publication details

The article was received on 08 Jul 2009, accepted on 03 Dec 2009 and first published on 08 Jan 2010


Article type: Paper
DOI: 10.1039/B913593F
Citation: Phys. Chem. Chem. Phys., 2010,12, 1618-1623
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    Controlling intermolecular spin interactions of La@C82 in empty fullerene matrices

    Y. Ito, J. H. Warner, R. Brown, M. Zaka, R. Pfeiffer, T. Aono, N. Izumi, H. Okimoto, J. J. L. Morton, A. Ardavan, H. Shinohara, H. Kuzmany, H. Peterlik and G. A. D. Briggs, Phys. Chem. Chem. Phys., 2010, 12, 1618
    DOI: 10.1039/B913593F

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