A new s chiral smectic family derived from 2, 2′, 4, 4′—tetrahydroxybenzalazine

Mercedes Marcos Química Orgánica, Facultad de Ciencias, Instituto de Ciencia de los Materiales de Aragón, Universidad de Zaragoza-C. S. I. C., 50009, Zaragoza, (ESPAÑA)

Jose Luis Serrano Química Orgánica, Facultad de Ciencias, Instituto de Ciencia de los Materiales de Aragón, Universidad de Zaragoza-C. S. I. C., 50009, Zaragoza, (ESPAÑA)

M. Teresa Sierra Química Orgánica, Facultad de Ciencias, Instituto de Ciencia de los Materiales de Aragón, Universidad de Zaragoza-C. S. I. C., 50009, Zaragoza, (ESPAÑA)

Jesus Etxebarria Departamento de Física, Facultad de Ciencias, Universidad del País Vasco, Apartado 644, Bilbao, (España)

Amaia Ezcurra Departamento de Física, Facultad de Ciencias, Universidad del País Vasco, Apartado 644, Bilbao, (España)

Abstract

New ferroelectric compounds have been prepared by the esterification of 4-alkoxy-2,2′,4′-trihydroxybenzala-zines with R-2-chloropropanoyl chloride obtained from L(+)-lactic acid. These substances exhibit chiral smectic C phase and smectic A and their phase transition temperatures and enthalpies were determined. A preliminary characterization of the ferroelectric properties of these compounds has been carried out by studying their response times as a function of temperature at several voltages.

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A new s chiral smectic family derived from 2, 2′, 4, 4′—tetrahydroxybenzalazine

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A new s chiral smectic family derived from 2, 2′, 4, 4′—tetrahydroxybenzalazine

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