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Title
Japanese:Selective extraction of higher fullerenes using cyclic dimers of zinc porphyrins 
English:Selective extraction of higher fullerenes using cyclic dimers of zinc porphyrins 
Author
Japanese: 庄子良晃, 田代健太郎, 相田卓三.  
English: Yoshiaki Shoji, Kentaro Tashiro, Takuzo Aida.  
Language English 
Journal/Book name
Japanese:Journal of the American Chemical Society 
English:Journal of the American Chemical Society 
Volume, Number, Page Vol. 126    No. 21    pp. 6570-6571
Published date May 2004 
Publisher
Japanese:American Chemical Society 
English:American Chemical Society 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL http://pubs.acs.org/doi/abs/10.1021/ja0489947
 
DOI https://doi.org/10.1021/ja0489947
Abstract Higher fullerenes (≥C76) were selectively extracted from a fullerene mixture obtained from a combustion-based industrial production source by cyclic dimers of β-unsubstituted porphyrin zinc complexes 2C5−2C7 with C5−C7 alkylene spacers as host molecules. Results of single extraction of the fullerene mixture with 2C5−2C7 together with a β-substituted analogue of 2C6 (1C6) and spectroscopic titration of 2C6 and 1C6 with C60, C70, and C96 indicated that the host selectivity toward higher fullerenes is much dependent on the structure of the porphyrin units and the size of the host cavity. Sequential three-stage extraction of the fullerene mixture with the best-behaved 2C6 resulted in considerable enrichment in very rare fullerenes C102−C110 (<0.1 abs %) up to 82 abs % (C76−C114, 99 abs %) (356 nm) of total fullerenes.

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