Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6920
Title: Ethyl 7-hydroxycoumarin-3-carboxylate derivatives: Synthesis, characterization and effect of liquid crystal properties.
Authors: Srinivasa, H.T.
Palakshamurthy, B.S.
Mohammad, AbdulKarim-Talaq
Keywords: Coumarins
Biphenyl
SmA Phase
Nematic phase
Issue Date: Mar-2018
Publisher: Elesvier B.V.
Citation: Journal of Molecular Structure, 2018, Vol.1155, p 513-519
Abstract: Two sets of new ethyl 7-hydroxycoumarin-3-carboxylate derivatives were synthesized and characterized to study the liquid crystalline properties. Chemical structures were confirmed by IR, NMR, CHN analysis techniques. Mesomarphic properties were accomplished by DSC, POM and X-ray studies. Density functional theory calculations and photophysical studies also performed. In the first set, smaller homologues of alkoxybenzoic acid derivatives exhibit monotropic smectic A (SmA) and higher homologous exhibit enantiotropic smectic A mesophase. The second set alkyl biphenyl derivatives exhibit stable SmA and nematic (N) mesophases. The well defined focal conic texture for SmA and threaded texture for nematic mesophases have been observed.
Description: Restricted Access.
URI: http://hdl.handle.net/2289/6920
ISSN: 0022-2860
Alternative Location: https://doi.org/10.1016/j.molstruc.2017.11.055
Copyright: 2017 Elsevier B.V.
Appears in Collections:Research Papers (SCM)

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