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Issue 19, 2010
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Short-range smectic order in bent-core nematic liquid crystals

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Abstract

Small angle X-ray diffraction from the uniaxial nematic phase of certain bent-core liquid crystals is shown to be consistent with the presence of molecular clusters possessing short-range tilted smectic (smectic-C) order. Persistence of these clusters throughout the nematic phase, and even into the isotropic state, likely accounts for the unusual macroscopic behavior previously reported in bent-core nematics, including an anomalously large flexoelectric effect (∼ 1000 times that of conventional calamitic nematics), very large orientational and flow viscosities (∼ 10–100 and ∼ 100–1000 times, respectively, typical values for calamitics), and an extraordinary flow birefringence observed in the isotropic state.

Graphical abstract: Short-range smectic order in bent-core nematic liquid crystals

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Publication details

The article was received on 08 Jan 2010, accepted on 03 Jun 2010 and first published on 13 Aug 2010


Article type: Paper
DOI: 10.1039/C000362J
Citation: Soft Matter, 2010,6, 4819-4827
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    Short-range smectic order in bent-core nematic liquid crystals

    S. H. Hong, R. Verduzco, J. C. Williams, R. J. Twieg, E. DiMasi, R. Pindak, A. Jákli, J. T. Gleeson and S. Sprunt, Soft Matter, 2010, 6, 4819
    DOI: 10.1039/C000362J

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