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Ionic solutions of two-dimensional materials

Cullen, PL; Cox, KM; Bin Subhan, MK; Picco, L; Payton, OD; Buckley, DJ; Miller, TS; ... Howard, CA; + view all (2017) Ionic solutions of two-dimensional materials. Nature Chemistry , 9 (3) pp. 244-249. 10.1038/nchem.2650. Green open access

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Abstract

Strategies for forming liquid dispersions of nanomaterials typically focus on retarding reaggregation, for example via surface modification, as opposed to promoting the thermodynamically driven dissolution common for molecule-sized species. Here we demonstrate the true dissolution of a wide range of important 2D nanomaterials by forming layered material salts that spontaneously dissolve in polar solvents yielding ionic solutions. The benign dissolution advantageously maintains the morphology of the starting material, is stable against reaggregation and can achieve solutions containing exclusively individualized monolayers. Importantly, the charge on the anionic nanosheet solutes is reversible, enables targeted deposition over large areas via electroplating and can initiate novel self-assembly upon drying. Our findings thus reveal a unique solution-like behaviour for 2D materials that enables their scalable production and controlled manipulation.

Type: Article
Title: Ionic solutions of two-dimensional materials
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/nchem.2650
Publisher version: http://doi.org/10.1038/nchem.2650
Language: English
Additional information: © 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
Keywords: Chemical physics; Nanoparticle synthesis; Two-dimensional materials
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1535371
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