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Advanced Materials

Generation of Chemically Unmodified Pure Single-Walled Carbon Nanotubes by Solubilizing with RNA and Treatment with Ribonuclease A


  • The authors are grateful to the EPSRC for funding through the Portfolio Partnership and the Carbon-based Electronics Programme. E. Mendoza acknowledges the Generalitat de Catalunya for sponsorship via the Nanotec Postdoctoral Fellowship Program. J. C. G. Jeynes thanks Dany Beste and Gabriele Wagner for their help. Supporting Information showing FTIR spectra of as-produced CNTs and RNase-treated CNTs is available online from Wiley InterScience or from the author.


RNA is used to purify carbon nanotubes (CNTs) in a simple, two-step method that does not require a time-intensive process or harsh chemical or physical treatments. The purity of the RNA-purified CNTs is demonstrated by a variety of physical characterization methods such as AFM (see figure), confirming that treatment of the RNA-wrapped CNTs with ribonuclease A effectively removes the RNA, allowing subsequent recovery of pure CNTs.

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