Controlling polyelectrolyte adsorption onto carbon nanotubes by tuning ion-image interactions
Abstract
Understanding and controlling polyelectrolyte adsorption onto carbon nanotubes is a fundamen- tal challenge in nanotechology. Polyelectrolytes have been shown to stabilise nanotube suspensions through adsorbing onto the nanotube surface, and polyelectrolyte-coated nanotubes are emerging as building blocks for complex and addressable self-assembly. The conventional wisdom suggests that polyelectrolyte adsorption onto nanotubes is driven by specific chemical or van der Waals interac- tions. We develop a simple mean-field model and show that ion-image attraction is a significant effect for adsorption onto conducting nanotubes at low salt concentrations. Our theory suggests a simple strategy to selectively and reversibly functionalize carbon nanotubes based on their electronic structure which in turn modifies the ion-image attraction.
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Cite
@article{arxiv.1801.05635,
title = {Controlling polyelectrolyte adsorption onto carbon nanotubes by tuning ion-image interactions},
author = {Alpha A. Lee and Sarah V. Kostinski and Michael P. Brenner},
journal= {arXiv preprint arXiv:1801.05635},
year = {2018}
}
Comments
This document is the unedited Author's version of a Submitted Work that was subsequently accepted for publication in Journal of Physical Chemistry B. To access the final edited and published work see http://www.pubs.acs.org/doi/10.1021/acs.jpcb.7b11398