“Zero-Dimensional” Single-Walled Carbon Nanotubes


  • We thank H. Hofer and R. Ridenour for their technical assistance, and Prof. C. Prakash Sharma (SCTIMST, India) and Dr. B. L. Allen (University of Pittsburgh (USA)) for valuable discussions. This work was supported by funding from the National Science Foundation (CDI 0941260) to A.C.B. and S.R.L., and by a Fondazione Ri.MED fellowship to R.G.


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The shorter, the more dispersible: An iterative, emulsion-based shortening technique has been used to reduce the length of single-walled carbon nanotubes (SWNTs) to the same order of magnitude as their diameter (ca. 1 nm), thus achieving an effectively “zero-dimensional” structure with improved dispersibility and, after hydroxylation, long-term water solubility. Finally, zero-dimensional SWNTs were positively identified using mass spectrometry for the first time.