Synthesis and Mesomorphic Properties of Poly(oxyethylene) with [(6-Heptylsulfonyl)hexylthio]methyl Side Groups

Autor:	Soo-Young Park, Young Gyu Kim, Barry L. Farmer, Seung-Yeop Kwak, Jong-Chan Lee, Kyungseok Oh, Jae Young Jho, Hee Bong Lee
Rok vydání:	2001
Předmět:	Sodium ethoxide Polymers and Plastics Mesogen Organic Chemistry Infrared spectroscopy Sulfone chemistry.chemical_compound Differential scanning calorimetry chemistry Liquid crystal Polymer chemistry Materials Chemistry Side chain Nucleophilic substitution
Zdroj:	Macromolecular Rapid Communications. 22:815-819
ISSN:	1521-3927 1022-1336
DOI:	10.1002/1521-3927(20010701)22:11<815::aid-marc815>3.0.co;2-s
Popis:	[(6-Heptylsulfonyl)hexylthio]methyl-substituted poly(oxyethylene) bearing a very polar sulfone group in the middle of the alkyl side chain was success fully synthesized by the reaction of poly[oxy(chloromethyl)ethylene] and (6-heptylsulfonyl)hexyl thioacetate with sodium ethoxide in N,N-dimethylacetamide. The ordered phase of the polymer was studied using X-ray diffraction, differential scanning calorimetry, and IR spectroscopy. The polymer was found to be liquid crystalline, although not having any conventional mesogenic group. It was suggested that the highly polar sulfone group in the side chain induces the self-assembly of the liquid crystal line phase.
Databáze:	OpenAIRE
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