pH dependent isotropic to nematic phase transitions in graphene oxide dispersions reveal droplet liquid crystalline phases
pH dependent isotropic to nematic phase transitions in graphene oxide dispersions reveal droplet liquid crystalline phases
Date
2014-05
Authors
Tkacz, Rachel
Oldenbourg, Rudolf
Mehta, Shalin B.
Miansari, Morteza
Verma, Amitabh
Majumder, Mainak
Oldenbourg, Rudolf
Mehta, Shalin B.
Miansari, Morteza
Verma, Amitabh
Majumder, Mainak
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Abstract
Size fractionation, amplified by the surface charge density of graphene oxide (GO) sheets, broadens the pH dependent isotropic (I) to nematic (N) phase transition in aqueous dispersions of graphene oxide (GO). In this biphasic region, a highly organized droplet nematic phase of uniform size (20 ± 2.8 μm diameter) with an isotropic interior is observed.
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Author Posting. © The Author(s), 2014. This is the author's version of the work. It is posted here by permission of Royal Society of Chemistry for personal use, not for redistribution. The definitive version was published in
Chemical Communications 50 (2014): 6668-6671, doi:10.1039/C4CC00970C.