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Sedimentation of C<sub>60</sub> and C<sub>70</sub> : Testing the Limits of Stokes' Law

Sedimentation of C60 and C70 : Testing the Limits of Stokes' Law

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PEARSON, Joseph, Tich Lam NGUYEN, Helmut CÖLFEN, Paul MULVANEY, 2018. Sedimentation of C60 and C70 : Testing the Limits of Stokes' Law. In: The Journal of Physical Chemistry Letters. 9(21), pp. 6345-6349. eISSN 1948-7185. Available under: doi: 10.1021/acs.jpclett.8b02703

@article{Pearson2018-11-01Sedim-44058, title={Sedimentation of C60 and C70 : Testing the Limits of Stokes' Law}, year={2018}, doi={10.1021/acs.jpclett.8b02703}, number={21}, volume={9}, journal={The Journal of Physical Chemistry Letters}, pages={6345--6349}, author={Pearson, Joseph and Nguyen, Tich Lam and Cölfen, Helmut and Mulvaney, Paul} }

2018-11-28T13:21:17Z 2018-11-01 Mulvaney, Paul Sedimentation of C<sub>60</sub> and C<sub>70</sub> : Testing the Limits of Stokes' Law Cölfen, Helmut Virtually all dynamic methods for determining particle size on the nanoscale use the Stokes–Einstein–Sutherland (SES) equation to convert the diffusion coefficient into a hydrodynamic radius. The validity of this equation on the nanoscale has not been rigorously validated by experiment. Here we measure the sedimentation rates and diffusion coefficients of C<sub>60</sub> and C<sub>70</sub> in toluene using analytical ultracentrifugation and compare the results to the SES equation. We find that the SES equation for the drag force (nonslip boundary condition) works down to 1 nm length scales. eng Mulvaney, Paul Pearson, Joseph Cölfen, Helmut 2018-11-28T13:21:17Z Nguyen, Tich Lam Nguyen, Tich Lam Pearson, Joseph

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