화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.656, No.1, 83-88, 2017
Supramolecular main-chain liquid crystalline polymers with competitive hydrogen bonding: Inclusion of structurally analogous hydrogen bond acceptors and the effects on liquid crystallinity
Aseries of liquid crystalline supramolecular copolymers formed through hydrogen bonding has been created. These polymers composed of bis-benzoic acids and two of pyridyl species-a small rigid bispyridyl capable of forming a mesophase and a small, flexible bis pyridyl nonmesogenic disruptor species. It was found that the polymers display monotropic nematic character at high concentrations of disruptors - up to 75% inclusion. Smectic phases were observed in loadings up to 50%. It is believed that the structural similarities between themesogenic and non-mesogenic acceptors contributes significantly to the enhanced stability of the liquid crystalline phases at high composition.