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Nanowetting of Graphene by Ionic Liquid Droplets
- Herrera, Cesar, García, Gregorio, Atilhan, Mert, Aparicio, Santiago
- The Journal of Physical Chemistry C 2015 v.119 no.43 pp. 24529-24537
- adsorption, amino acids, contact angle, droplets, energy, graphene, ionic liquids, ions, molecular dynamics, silica
- The behavior of nanodroplets formed by amino acid based 1-ethyl-3-methylimidazolium glycine ionic liquid on graphene sheets was studied using classic molecular dynamics. Nanodroplets of different sizes were analyzed, and the contact angle was inferred. The ion–graphene interaction energy was calculated as a function of droplets size, together with the ions arrangement at the interface. Likewise, wetting of SiO₂ and graphene supported on SiO₂ by ionic liquid nanodroplets was also analyzed. Graphene wetting by this ionic liquid is discussed in terms of the changes on fluid structure upon adsorption and the mechanism and strength of ion–graphene interactions.