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Chiral biphenylacetylene smectic liquid crystals

AuthorsVega, Laura de; Hennrich, Gunther; Omenat, Ana; Tejedor, Rosa M.; Barberá, Joaquín; Gómez-Lor, Berta ; Serrano, José Luis
Issue Date2010
PublisherAmerican Chemical Society
CitationJournal of Physical Chemistry B 114(14): 4811-4815 (2010)
AbstractStandard Sonogashira coupling afforded rod-like, phenylacetylene extended biphenyl mesogens substituted with different chiral alkoxy chains, starting from commercially available 4-(4′-bromophenyl)phenol. Depending on the position of the chiral center and the polar nature of the target molecules as determined by the electron withdrawing end-groups, different types of smectic liquid crystals are formed. The liquid crystal phases are fully characterized by polarized optical microscopy, differential scanning calorimetry, and X-ray diffraction. In two cases, the molecular chirality is transferred to the supramolecular assembly, which is proved by circular dichroism measurements in the chiral mesophase. © 2010 American Chemical Society.
Identifiersdoi: 10.1021/jp1004727
issn: 1520-6106
e-issn: 1520-5207
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