Synthesis of covalent carbon—nitride solids: Alternatives to diamond?

Authors

  • Prof. Charles M. Lieber,

    Corresponding author
    1. Department of Chemistry and Division of Applied Sciences Harvard University 12 Oxford Street, Cambridge, Massachusetts 02138 (USA)
    • Department of Chemistry and Division of Applied Sciences Harvard University 12 Oxford Street, Cambridge, Massachusetts 02138 (USA)
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  • Dr. Z. John Zhang

    1. Department of Chemistry and Division of Applied Sciences Harvard University 12 Oxford Street, Cambridge, Massachusetts 02138 (USA)
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Abstract

Covalent carbon nitride has been produced for the first time. Binary carbon-nitrogen solids are an important synthetic goal, since although β-C3N4, has been predicted to have a hardness comparable to or greater than diamond, it cannot be produced by traditional solid-state chemistry methods. The novel approach described here combines pulsed laser ablation with a high-flux atomic beam. From comparisons with calculated diffraction patterns, it is inferred that crystalline β-C3N4, has been synthesized, although in an impure form.

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