4-alkyloxy-4’-stilbazoles new heterocyclic mesogens

  1. Bruce, D.W. 1
  2. Dunmur, D.A. 1
  3. Lalinde, E. 1
  4. Maitlis, P.M. 1
  5. Styring, P. 1
  1. 1 University of Sheffield
    info

    University of Sheffield

    Sheffield, Reino Unido

    ROR https://ror.org/05krs5044

Revista:
Liquid Crystals

ISSN: 0267-8292

Any de publicació: 1988

Volum: 3

Número: 3

Pàgines: 385-395

Tipus: Article

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DOI: 10.1080/02678298808086385 SCOPUS: 2-s2.0-0000410371 GOOGLE SCHOLAR

Altres publicacions en: Liquid Crystals

Resum

The synthesis of a new series of heterocyclic mesogens, the trans-4-alkyloxy-4’-stilbazoles (CnH2n+1OC6H4CH=CHC5H4N), is described and the phase behaviour is reported for all homologues between methyloxy (C1) and dodecyloxy (C12). For n < 3, the compounds are non-mesomorphic; monotropic smectic phases are observed for n = 3 and 4, whilst homologues with n = 5 to 12 show enantiotropic smectic phases. For comparison the synthesis and properties of two trans-4-alkyloxy-stilbenes are also reported. The phases are assigned on the basis of either X-ray data or optical textures. © 1988 Taylor & Francis Group, LLC.