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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Interlayer molecular exchange in an anticlinically ordered chiral liquid crystal
Zalar1, Gregorovic, Blinc
1J. Stefan Institute, University of Ljubljana, Jamova 39, 1000 Ljubljana, Slovenia.
Abstract:
The interlayer molecular exchange has been determined in the antiferroelectric smectic-C(*)(A) phase of alphad(2) deuterated 4-(1-methylheptyloxycarbonyl)phenyl4(')-octyloxybiphenyl-4-carboxylat e via quadrupolar deuteron NMR self-diffusion in the spatially varying electric field gradient produced by the anticlinic smectic layer structure. The interlayer self-diffusion coefficient is here by two orders of magnitude smaller than in synclinically ordered smectic phases. The results support the entropic suppression model of the origin of anticlinic smectic ordering. The applied technique could possibly allow for a new insight into the local structure of the intermediate "clock" phases.
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