New ferroelectric liquid crystals for high‐performance optical devices

Roberta Cassano Department of Pharmaceutical Sciences, University of Calabria, Rende (CS), ItalyCorrespondence[email protected]

Roman Da˛browski Institute of Chemistry, Military University of Technology, Warsaw, Poland

Jerzy Dziaduszek Institute of Chemistry, Military University of Technology, Warsaw, Poland

Sonia Trombino Department of Pharmaceutical Sciences, University of Calabria, Rende (CS), Italy

Francesca Iemma Department of Pharmaceutical Sciences, University of Calabria, Rende (CS), Italy

Fiore Pasquale Nicoletta Department of Pharmaceutical Sciences, University of Calabria, Rende (CS), Italy

Giovanni De Filpo Department of Chemistry, University of Calabria, Rende (CS), Italy

Nevio Picci Department of Pharmaceutical Sciences, University of Calabria, Rende (CS), Italy

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Abstract

The synthesis, characterisation, helical pitch and electro‐optical response of new ferroelectric liquid crystals, 4′‐(ω‐acryloxyalkoxy)‐, 4′‐(ω‐alkanoyloxyalkoxy)‐ or 4′‐(ω‐perfluoroalkanoyloxy)alkoxybiphenyl‐4‐yl (S)‐4‐(1‐octyloxy)benzoates, bearing either polymerisable or non‐polymerisable terminal groups, are described. The synthesised liquid crystals exhibit both a chiral smectic C phase and a chiral nematic phase. The helical pitch and electro‐optical properties of the new compounds were determined as a function of temperature.

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Acknowledgements

The present work was supported by Sampa Project, Calabria University Funds, and PRIN 2007.

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New ferroelectric liquid crystals for high‐performance optical devices

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New ferroelectric liquid crystals for high‐performance optical devices

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