Significant promotional effect of CCl4 on fullerene yield in the graphite arc-discharge reactionElectronic supplementary information (ESI) available: diagram of the experimental setup used; linear correlation plots of chromatographic peak area vs. fullerene concentration (C60 and C70); typical HPLC-UV chromatogram of the products; data for four repeats of experiments 4 and 5. See http://www.rsc.org/suppdata/cc/b3/b306921b/

Addition of a small quantity (∼3%) of CCl4 to the He atmosphere of the graphite arc-discharge reaction revealed a marked increase in fullerene yield.