Osmotically-driven transport in carbon nanotube porins

Kyunghoon Kim, Jia Geng, Ramya Tunuguntla, Luis R. Comolli, Costas P. Grigoropoulos, Caroline M. Ajo-Franklin, Aleksandr Noy

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We report the measurements of transport of ions and uncharged species through carbon nanotube (CNT) porins-short segments of CNTs inserted into a lipid bilayer membrane. Rejection characteristics of the CNT porins are governed by size exclusion for the uncharged species. In contrast, rejection of ionic species is governed by the electrostatic repulsion and Donnan membrane equilibrium. Permeability of monovalent cations follows the general trend in the hydrated ion size, except in the case of Cs+ ions.

Original languageEnglish (US)
Pages (from-to)7051-7056
Number of pages6
JournalNano Letters
Volume14
Issue number12
DOIs
StatePublished - Dec 10 2014
Externally publishedYes

Fingerprint

Porins
Carbon Nanotubes
Carbon nanotubes
carbon nanotubes
Ions
rejection
membranes
Membranes
Monovalent Cations
ions
Lipid bilayers
Membrane Lipids
exclusion
lipids
Electrostatics
permeability
Positive ions
electrostatics
trends
cations

Keywords

  • carbon nanotubes
  • CNT porins
  • ion selectivity
  • Molecular transport
  • nanopores

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Kim, K., Geng, J., Tunuguntla, R., Comolli, L. R., Grigoropoulos, C. P., Ajo-Franklin, C. M., & Noy, A. (2014). Osmotically-driven transport in carbon nanotube porins. Nano Letters, 14(12), 7051-7056. https://doi.org/10.1021/nl5034446

Osmotically-driven transport in carbon nanotube porins. / Kim, Kyunghoon; Geng, Jia; Tunuguntla, Ramya; Comolli, Luis R.; Grigoropoulos, Costas P.; Ajo-Franklin, Caroline M.; Noy, Aleksandr.

In: Nano Letters, Vol. 14, No. 12, 10.12.2014, p. 7051-7056.

Research output: Contribution to journalArticle

Kim, K, Geng, J, Tunuguntla, R, Comolli, LR, Grigoropoulos, CP, Ajo-Franklin, CM & Noy, A 2014, 'Osmotically-driven transport in carbon nanotube porins', Nano Letters, vol. 14, no. 12, pp. 7051-7056. https://doi.org/10.1021/nl5034446
Kim K, Geng J, Tunuguntla R, Comolli LR, Grigoropoulos CP, Ajo-Franklin CM et al. Osmotically-driven transport in carbon nanotube porins. Nano Letters. 2014 Dec 10;14(12):7051-7056. https://doi.org/10.1021/nl5034446
Kim, Kyunghoon ; Geng, Jia ; Tunuguntla, Ramya ; Comolli, Luis R. ; Grigoropoulos, Costas P. ; Ajo-Franklin, Caroline M. ; Noy, Aleksandr. / Osmotically-driven transport in carbon nanotube porins. In: Nano Letters. 2014 ; Vol. 14, No. 12. pp. 7051-7056.
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