Elastic Constants of Chromonic Liquid Crystals
Version 2 2018-07-13, 18:52
Version 1 2018-07-13, 18:51
Posted on 2018-07-13 - 18:52
Chromonics are a
class of liquid crystals made of aqueous solutions
of plank-like molecules, which self-assemble into semiflexible chains.
At a given temperature a nematic phase is formed when the system reaches
a sufficiently high concentration. Among the unusual properties of
chromonic liquid crystals, particularly prominent is the large anisotropy
of elastic constants, which leads to new phenomenologies in confined
volumes. To gain insights into the microscopic origin of this behavior,
we have investigated the elastic properties of a model system that
undergoes self-assembly driven nematization by using Monte Carlo simulations
and an Onsager-like theory. The relative magnitude of the elastic
constants and their dependence on temperature and density show the
distinguishing features found in chromonic liquid crystals. We identify
the relevant microscopic determinants of this behavior, and we discuss
the role played by both the molecular self-assembly and the intrinsic
flexibility of aggregates.
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Romani, Emanuele; Ferrarini, Alberta; Michele, Cristiano De (2018). Elastic Constants of Chromonic Liquid Crystals. ACS Publications. Collection. https://doi.org/10.1021/acs.macromol.8b00900
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AUTHORS (3)
ER
Emanuele Romani
AF
Alberta Ferrarini
CM
Cristiano De Michele