Anacleto J F, Perreault H, Boyd R K, Pleasance S, Quilliam M A, Sim P G, Howard J B, Makarovsky Y, Lafleur A L
Institute for Marine Biosciences, National Research Council, Halifax, Nova Scotia, Canada.
Rapid Commun Mass Spectrom. 1992 Mar;6(3):214-20. doi: 10.1002/rcm.1290060313.
Fullerenes C60 and C70, generated by combustion, have been shown previously to be produced in controlled laminar flames accompanied by other compounds having fullerene-like characteristics. Analysis of these additional compounds by high-performance liquid chromatography, coupled on-line with mass spectrometry has identified them as isomers of the C60 and C70 fullerenes. The newly observed isomers have characteristic UV spectra and are thermally unstable, undergoing conversion to the more stable fullerenes with a half-life of about 1 h in boiling toluene (111 degrees C). Isomers of C60 and C70 fullerenes previously have been studied theoretically, but not observed experimentally. The flame-generated material also contains C60O and C70O compounds, as well as C76 and higher carbon clusters.
燃烧产生的富勒烯C60和C70此前已被证明是在受控层流火焰中产生的，同时还伴有其他具有类富勒烯特征的化合物。通过高效液相色谱法对这些额外化合物进行分析，并与质谱在线联用，已将它们鉴定为C60和C70富勒烯的异构体。新观察到的异构体具有特征性紫外光谱，且热不稳定，在沸腾的甲苯（111℃）中会转化为更稳定的富勒烯，半衰期约为1小时。此前已对C60和C70富勒烯的异构体进行了理论研究，但尚未通过实验观察到。火焰产生的物质还包含C60O和C70O化合物，以及C76和更高的碳簇。
