Understanding solvent spreading for Langmuir deposition of nanomaterial films: a Hansen solubility parameter approach

Large, Matthew J, Ogilvie, Sean P, King, Alice A K and Dalton, Alan B (2017) Understanding solvent spreading for Langmuir deposition of nanomaterial films: a Hansen solubility parameter approach. Langmuir, 33 (51). pp. 14766-14771. ISSN 0743-7463

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Abstract

In order to prepare high-quality Langmuir films of two-dimensional materials it is important to select a solvent optimized for both exfoliation and spreading at the air-water interface. Whilst it is generally accepted that exfoliation and stabilisation of two-dimensional materials is well-described using the Hansen solubility parameter theory, a complementary description of solvent spreading behaviour is lacking.
To this end we develop an understanding of solvent spreading using a Hansen solubility parameter framework. Our model accurately predicts the behaviour of both water-immiscible and water-miscible solvents in Langmuir film formation experiments. We demonstrate that spreading behaviour can be modified by controlling the surface pressure of the subphase using an amphiphilic species and accordingly utilise this approach to determine the maximum spreading pressure for a selection of solvents. Ultimately, by building on this understanding we open up additional routes to optimize the preparation of Langmuir films of two-dimensional materials and other nanoparticles.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Materials Physics Group
Subjects: Q Science
Q Science > QD Chemistry > QD0450 Physical and theoretical chemistry
Depositing User: Sean Paul Ogilvie
Date Deposited: 18 Dec 2017 09:39
Last Modified: 18 Jan 2018 13:11
URI: http://sro.sussex.ac.uk/id/eprint/72148

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