Publikation:

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

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2018

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Nguyen, Tich Lam
Mulvaney, Paul

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https://doi.org/10.1021/acs.jpclett.8b02703
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The Journal of Physical Chemistry Letters. 2018, 9(21), pp. 6345-6349. eISSN 1948-7185. Available under: doi: 10.1021/acs.jpclett.8b02703

Zusammenfassung

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 C60 and C70 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.

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540 Chemie

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ISO 690PEARSON, 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. 2018, 9(21), pp. 6345-6349. eISSN 1948-7185. Available under: doi: 10.1021/acs.jpclett.8b02703
BibTex
@article{Pearson2018-11-01Sedim-44058,
  year={2018},
  doi={10.1021/acs.jpclett.8b02703},
  title={Sedimentation of C<sub>60</sub> and C<sub>70</sub> : Testing the Limits of Stokes' Law},
  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}
}
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