Synthesis and thermotropic properties of novel side-chain dimer liquid crystalline polymers

J. Scheerder, A.T.M. Marcelis, E.J.R. Sudh"lter

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)

Abstract

A new class of side-chain liquid crystalline polymers with polymethacrylate or polyether backbones and two different mesogenic moieties in one side-chain, i.e. a biphenyl group and a cholesterol group, have been synthesized. The thermotropic behavior of both, the monomeric precursors and the polymers, has been investigated. The monomers exhibit smectic A and chiral nematic phases and the polymers exhibit smectic A mesophases. For both, monomers and polymers, the isotropization temperatures and the corresponding dimensionless entropy changes S/R depend on the parity of the spacer between the two mesogens. Replacement of the biphenyl group in the polymethacrylates by a phenyl group lowers the isotropization temperatures, but the smectic A phase is retained.
Original languageEnglish
Pages (from-to)1303-1310
JournalMacromolecular Chemistry and Physics
Volume201
Issue number12
DOIs
Publication statusPublished - 2000

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