Extraction of exotic fullerenes and purification of single-walled nanotubes

Kazuyuki Tohji, Hideyuki Takahashi, Kouzo Shinoda, Atsuo Kasuya, Yuichiro Nishina

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


In this report, we presented a novel and simple extraction method, namely Hydrothermally Initiated Dynamic Extraction (HIDE) method, which allows the extraction of exotic fullerenes remaining in the fullerene soot. In the HIDE method, the soot was treated in boiling water that neither dissolved fullerenes nor produced minimal by-products but untangles the fullerenes from the soot, prior to the extraction by organic solvent. As a result, the HIDE method allowed the extraction of exotic fullerenes, such as dimeric fullerene oxides, higher fullerenes having a low symmetry and oxidized higher fullerenes. Accordingly, the single walled nanotubes (SWNTs) with a purity of 99% by wt. was achieved for the first time with the application of the HIDE method.

Original languageEnglish
Pages (from-to)665-679
Number of pages15
JournalFullerene Science and Technology
Issue number4
Publication statusPublished - 1999

ASJC Scopus subject areas

  • Chemical Engineering(all)


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