首页>
中文期刊>
《高分子科学:英文版》
>SYNTHESIS AND CHARACTERIZATION OF OPTICALLY ACTIVE POLY(AMIDE-IMIDE)S CONTAINING PHOTOSENSITIVE CHALCONE UNITS IN THE MAIN CHAIN
SYNTHESIS AND CHARACTERIZATION OF OPTICALLY ACTIVE POLY(AMIDE-IMIDE)S CONTAINING PHOTOSENSITIVE CHALCONE UNITS IN THE MAIN CHAIN
A series of new optically active poly(amide-imide)s were synthesized by direct polycondensation reaction of 4,4'-diaminochalcone with several N-trimellitylimido-L-amino acids using a tosyl chloride(TsCl),pyridine(Py) and dimethylformamide(DMF) system as condensing agent.The resulting thermally stable poly(amide-imide)s were obtained in good to high yields and inherent viscosities ranging between 0.35 dL/g and 0.58 dL/g and were characterized with FTIR, ~1H-NMR,CHN,Ultraviolet,TGA and DTG techniques.
展开▼
机译:preparation and Characterization of side-Chain Liquid-Crystalline polyoxetanes anchoring a pendant spacer-separated mesogen at the Tertiary-Like C-3 Carbon of the Oxetane Unit