Efficient Separation of (6,5) Single-Walled Carbon Nanotubes Using a “Nanometal Sinker”


  • This work was supported in part by a Grant-in-Aid for Scientific Research (A) (no.17205014) to N.N. and the Global COE Program “Science for Future Molecular Systems” from the Ministry of Education, Culture, Sports, Science, and Technology (Japan)


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Sort it out! Density-gradient ultracentrifugation is used to separate single-walled carbon nanotubes (SWNTs) of a single chirality. A “nanometal sinker” (AuCl4 ions) adsorbs onto specific SWNTs and allows the separation of adsorbed SWNTs and nonfunctionlized SWNTs (see picture). (6,5) SWNTs have been successfully separated from as-prepared SWNTs in a process termed “SWNT chirality fishing”.