Highly 13C isotope enriched azafullerene, C59N, for nuclear spin labelling

Details Highly 13C isotope enriched azafullerene, C59N, for nuclear spin labelling Highly 13C isotope enriched azafullerene, C59N, for nuclear spin labelling

2004-11-17

arxiv.org/abs/cond-mat/0411448v2

Physics

Condensed Matter

Materials Science

Scientific paper

Synthesis of highly $^{13}$C isotope enriched azafullerene, C$_{59}$N embedded in C$_{60}$ is reported. $^{13}$C enriched fullerenes, produced with the Kr\"{a}tschmer-Huffmann process, were subject to a N$_{2}$ discharge that produces C$_{59}$N with a low probability. Raman spectroscopy indicates a homogeneous $^{13}$C distribution. Electron spin resonance measurement (ESR) proves that the C$_{59}$N concentration, 0.2 %, is similar as in non-enriched fullerenes. The ESR spectrum is simulated accurately with the known $^{14}$N and $^{13}$C hyperfine coupling constants. The material enables the nuclear spin-labelling of heterofullerene complexes with a potential for biological applications. It might also find applications as a building element for quantum computation.

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