CUED Publications database

Ionic solutions of two-dimensional materials

Cullen, PL and Cox, KM and Bin Subhan, MK and Picco, L and Payton, OD and Buckley, DJ and Miller, TS and Hodge, SA and Skipper, NT and Tileli, V and Howard, CA (2017) Ionic solutions of two-dimensional materials. Nature Chemistry, 9. pp. 244-249. ISSN 1755-4330

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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.

Item Type: Article
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:06
Last Modified: 13 Apr 2021 07:59
DOI: 10.1038/nchem.2650