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Transmission electron microscopy of C70 single crystals at room temperature

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Abstract

Transmission electron microscopy (TEM) techniques have been employed to study the room temperature solid state form of chromatographically purified C70. Tilting and electron diffraction experiments in three-dimensional reciprocal space, on samples prepared by crystallization from several different solvents, show that C70 crystallites adopt hexagonal close packed (hcp) structure with a = 1.01 ± 0.05 nm and c = 1.70 ± 0.08 nm. The extinctions and observed reflections conform to the P63/mmc space group. High resolution TEM images reveal the molecular order and periodicity associated with C70 crystallites in real space. The experimental results are in agreement with the preliminary computations of crystal structure within acceptable error limits.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, R. R. McCormick School of Engineering and Applied Science, Northwestern University, 60208, Evanston, Illinois, USA

    Vinayak P. Dravid, Xiwei Lin & Hong Zhang

  2. Department of Chemistry, Northwestern University, 60208, Evanston, Illinois, USA

    Shengzhong Liu & Manfred M. Kappes

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  1. Vinayak P. Dravid
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  2. Xiwei Lin
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  3. Hong Zhang
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  4. Shengzhong Liu
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  5. Manfred M. Kappes
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Dravid, V.P., Lin, X., Zhang, H. et al. Transmission electron microscopy of C70 single crystals at room temperature. Journal of Materials Research 7, 2440–2446 (1992). https://doi.org/10.1557/JMR.1992.2440

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  • DOI: https://doi.org/10.1557/JMR.1992.2440

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