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Title: Synthesis and mesomorphic properties of some esters of trans-4-n-alkoxycinnamic and trans-4-n-alkoxy-alpha-methylcinnamic acids exhibiting ferroelectric and antiferroelectric phases
Authors: Kasthuraiah, N.
Sadashiva, B.K.
Krishna Prasad, S.
Nair, Geetha G.
Issue Date: Jan-1998
Publisher: Taylor & Francis
Citation: Liquid Crystals, 1998, Vol.24, p639 - 645
Abstract: The synthesis and mesomorphic properties of several homologues of (S)-(+)-1-methylheptyl 4-[4(trans-4-n-alkoxycinnamoyloxy)benzoyloxy]benzoates (series I) and (S)-(+)-1-methylheptyl 4-[4-(trans-4-n-alkoxy-alpha-methylcinnamoyloxy)benzoyloxy]benzoates (series II) are described. The influence of the alpha -methyl group on the different mesophases and the clearing temperatures has been evaluated. Many homologues of both the series show a ferroelectric chiral smectic C (SmC*) phase while the antiferroelectric smectic C phase (SmC*A) is exhibited by compounds of series I. The mesophases have been identified by optical polarizing microscopy, differential scanning calorimetry and miscibility studies. The spontaneous polarization, the helical pitch and the tilt angle of two of the compounds have also been measured.1
Description: Restricted Access.
ISSN: 0267-8292
1366-5855 (Online)
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Copyright: 1998 Taylor & Francis
Appears in Collections:Research Papers (SCM)

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