Synthesis of heterofullerenes by laser ablation

Abstract

Heterofullerenes in which carbon atoms of the fullerene cage are substituted by heteroatoms (boron and/or nitrogen) were synthesized by high-temperature laser ablation of or B₄C– or BC₂N–graphite composite rods. The products were analyzed with a laser desorption/ionization mass spectrometer (LDIMS), revealing that BC₅₉ (m/z 719) from B₄C-graphite under argon atmosphere and BNC₅₈ (m/z 721) from BC₂N–graphite under argon or from B₄C–graphite under nitrogen were formed together with the C₆₀ molecule. X-ray photoelectron spectroscopy analysis showed the presence of boron and nitrogen in the product by laser ablation of B₄C–graphite under nitrogen. Isotope labeled experiments using ¹⁵N₂ supported the existence BNC₅₈.

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