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Title: Phase transitions in novel disulphide-bridged alkoxycyanobiphenyl dimers
Authors: Pal, Santanu Kumar
Raghunathan, V.A.
Kumar, Sandeep
Issue Date: Feb-2007
Publisher: Taylor & Francis
Citation: Liquid Crystals, 2007, Vol.34, p135-141
Abstract: The synthesis, characterization and mesomorphic properties of the first examples of novel disulphide-bridged alkoxycyanobiphenyl dimers are reported. The thermal behaviour of these mesogens was investigated by polarizing optical microscopy, differential scanning calorimetry and X-ray diffractometry. The dimers with a shorter spacer exhibit only the nematic phase while dimers with a longer spacer display nematic as well as smectic phases. X-ray diffraction experiments reveal the intercalated structure of the SmA phase of these dimers and the presence of short range SmA-like order in the N phase (cybotactic nematic) of all the compounds, except the one with the shortest spacer.
Description: Restricted Access.
ISSN: 0267-8292
1366-5855 (online)
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Copyright: 2007 Taylor & Francis
Appears in Collections:Research Papers (SCM)

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