Water-Redispersible Isolated Single-Walled Carbon Nanotubes Fabricated by In Situ Polymerization of Micelles


  • T.H.K. and C.D. contributed equally to this work. This work was supported by the Basic Atomic Energy Research Institute (BAERI) Programs and the CNRF project of the Ministry of Science and Technology of Korea. This work utilized facilities supported in part by the National Science Foundation under Agreement No. DMR-9986442. The mention of commercial products does not imply endorsement by NIST, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose. Supporting Information is available online from Wiley InterScience or from the author.


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Individually isolated single-walled carbon nanotubes (SWNTs) are coated with a monolayer of cationic surfactant to improve the stability of their dispersions in water. After polymerizing the counterions of the surfactant, the monolayer coating is “locked in” (see figure), and the SWNTs are redispersible even after harsh processing such as freeze-drying, offering improved potential for practical applications.