Some novel smectic C liquid-crystalline side-chain polymers Polymethacrylates and poly a-chloroacrylates - Sorbonne Université
Journal Articles Liquid Crystals Year : 1987

Some novel smectic C liquid-crystalline side-chain polymers Polymethacrylates and poly a-chloroacrylates

Abstract

Novel methacrylate and α-chloroacrylate side-chain polymers in which the mesogenic moieties are based on the 4-n-alkoxyphenyl-4'-(4'-methylhexyloxy) benzoates have been characterized by differential scanning calorimetry, optical microscopy and X-ray diffraction. Polymethacrylates give smectic A phases although the homologue where n = 11 exhibits a smectic C∗-smectic A transition. There is no real evidence for liquid-crystalline properties in the poly-α-chloroacrylates where n = 2 or 6. The poly-α-chloroacrylate for which n = 11 exhibits a layer structure with the side chains orthogonal to the layer planes as in the smectic A phase. However, this smectic phase has a higher order of the molecules within the layers; the chlorine atoms do impose a local ordering of the mesogenic side groups.
No file

Dates and versions

hal-04642923 , version 1 (10-07-2024)

Identifiers

Cite

S. Esselin, Louis Bosio, C. Noël, G. Decobert, J. Dubois. Some novel smectic C liquid-crystalline side-chain polymers Polymethacrylates and poly a-chloroacrylates. Liquid Crystals, 1987, 2 (4), pp.505-518. ⟨10.1080/02678298708086306⟩. ⟨hal-04642923⟩
8 View
0 Download

Altmetric

Share

More