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Synthesis of Novel Liquid-Crystalline Allene Derivatives with Ferroelectric Properties

✍ Scribed by Stichler-Bonaparte, Jürgen ;Kruth, Holger ;Lunkwitz, Ralph ;Tschierske, Carsten

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
429 KB
Volume
1996
Category
Article
ISSN
0947-3440

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✦ Synopsis

Abstract

Some new heterocyclic liquid‐crystalline compounds incorporating a 1,3‐disubstituted allene unit were synthesised. These axial‐chiral compounds were investigated by polarisation microscopy and differential scanning calorimetry. One of them was also synthesised in enantiomerically enriched form by enantioselective synthesis. It was found that the latter product exhibits a ferroelectric switchable chiral smectic C phase with an unexpectedly large value of the spontaneous polarisation.

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