New Liquid Crystalline Compounds Involving Ester-Chalcone Linkages Having 1, 3, 5-Trisubstituted Pyrazole as a Terminal Group

BT Thaker, DM Patel, JB Kanojiya

Index: Thaker; Patel; Kanojiya Molecular Crystals and Liquid Crystals, 2009 , vol. 509, # 1 p. 145 - 164

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Abstract

Mesogens with chalcone central linkage are rare. It has been observed that–CO–CH= CH– linkage is less conducive to mesomorphism compared to–CH= N–(azomethine),–COO– (ester),–N= N–(azo) linkages due to the non linearity and angle strain arising from the keto group. But when–CO–CH= CH–linkage is present with other central linkages it becomes condusive to mesomorphism. In the present investigation two homologous series were ...