Synthesis of polyphilic compounds Evidence for ferroelectricity in a non-chiral mesophase - Sorbonne Université Access content directly
Journal Articles Liquid Crystals Year : 1993

Synthesis of polyphilic compounds Evidence for ferroelectricity in a non-chiral mesophase

F. Tournilhac
  • Function : Author
J. Simon
  • Function : Author
L. Blinov
  • Function : Author
S. Yablonsky
  • Function : Author

Abstract

The synthesis and properties of new mesomorphic ferroelectrics composed of nonchiral polyphilic molecules are described. Polyphilic molecular units are made up of a sequence of chemical fragments differing by their chemical nature. The segregation between unlike species is used to favour a polar packing. Ferroelectricity is demonstrated by the measurement of an acoustically induced piezoelectric response and the determination of repolarization currents. It is the first time that a ferroelectric repolarizable mesophase is obtained with non-chiral molecular units. The mechanism of ferroelectricity is therefore different from that found in conventional chiral smectic C.
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hal-04512978 , version 1 (20-03-2024)

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F. Tournilhac, Louis Bosio, J. Simon, L. Blinov, S. Yablonsky. Synthesis of polyphilic compounds Evidence for ferroelectricity in a non-chiral mesophase. Liquid Crystals, 1993, 14 (2), pp.405-414. ⟨10.1080/02678299308027655⟩. ⟨hal-04512978⟩
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