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| Research article summary (published 29 Apr 2006): |
Ferroelectricity of a bent-core material with cholesteryl terminal chain.
Full Abstract
We have studied the phase sequence and physical properties of an asymmetric bent-core material with a chiral rigid cholesteryl moiety, and a flexible achiral alkyl side chain at the other end. The combination of the achiral bent core with the chiral cholesteryl unit results in properties different from those of both the usual calamitic and bent-core materials. We find that the presence of the bent core unit induces a wide-temperature-range optically isotropic (probably BPIII) mesophase between the isotropic and cholesteric (chiral nematic) phases. Below the cholesteric phase a ferroelectric smectic-C* structure occurs in which the bent-core units do not seem to form a polar close packing.
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Author information
Author/s: Liao, G (G); Shashikala, I (I); Yelamaggad, C V (CV); Rao, D S Shankar (DS); Prasad, S Krishna (SK); Jákli, A J (AJ);
Affiliation: Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, USA.
Journal and publication information
Publication Type: Journal Article
Journal: Physical review. E, Statistical, nonlinear, and soft matter physics (Phys Rev E Stat Nonlin Soft Matter Phys), published in United States. (Language: eng)
Reference: 2006-May; vol 73 (issue 5 Pt 1) : pp 051701
Dates: Created 2006/06/28; Completed 2006/09/12;
PMID: 16802948, status: PubMed-not-MEDLINE (last retrieval date: 12/26/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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