Surface crystallization of ionic liquid crystals
authors Martins, MAR; Carvalho, PJ; Alves, D; Dariva, C; Costa, MC; Ferreira, RAS; Andre, PS; Morgado, P; Pinho, SP; Filipe, EJM; Coutinho, JAP
nationality International
journal PHYSICAL CHEMISTRY CHEMICAL PHYSICS
keywords TENSION; BEHAVIOR; PHASE; TRANSITION; RHEOLOGY; MEDIA
abstract The evidence for surface crystallization in ionic liquids is scarce. The existing reports seem to be contradictory as for its driving forces, since in the two compounds investigated in the literature, the contribution of coloumbic and van der Waals forces is very different. In this work 1-dodecyl-3-methylimidazolium tetrafluoroborate was studied and its surface crystallization characterized by surface tension, ellipsometry and optical microscopy. The results obtained seem to reconcile previous observations, and it was further shown, using the same techniques, that this phenomenon is prevalent in other ionic liquids. MD simulation results illustrate the different possibilities of organization, providing reasonable models to rationalize the experimental observations.
publisher ROYAL SOC CHEMISTRY
issn 1463-9076
year published 2019
volume 21
issue 32
beginning page 17792
ending page 17800
digital object identifier (doi) 10.1039/c9cp03947c
web of science category Chemistry, Physical; Physics, Atomic, Molecular & Chemical
subject category Chemistry; Physics
unique article identifier WOS:000481777100029
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