Synthesis and characterization of liquid crystalline polysiloxanes containing benzyl ether mesogens

Chain-Shu Hsu, V. Percec*

*Corresponding author for this work

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Side chain liquid crystalline polysiloxanes were synthesized by the hydrosilation of poly(methylhydrosiloxane) with p‐(1‐undecenyl‐11‐oxy) benzyl ethers of 4‐cyanophenol (IM), 4‐methoxyphenol (IIM), 4‐cyano‐4′‐hydroxybiphenyl (IIIM), 4‐methoxy‐4′‐hydroxybiphenyl (IVM), and 2‐cyano‐6‐hydroxynaphthalene (VM). The phase behavior of both monomeric and polymeric liquid crystals was characterized by differential scanning calorimetry and optical polarization microscopy. IM is a monotropic liquid crystal, IIM is crystalline, and IIIM and IVM are enantiotropic liquid crystals, whereas VM presents two virtual liquid crystalline transitions and crystalline polymorphism. All the synthesized polysiloxanes present enantiotropic smectic mesomorphism.

Original languageEnglish
Pages (from-to)2909-2923
Number of pages15
JournalJournal of Polymer Science Part A: Polymer Chemistry
Volume25
Issue number10
DOIs
StatePublished - 1 Jan 1987

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