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Sohrab Rahmani,Amin Shafiei zadeh Mahani 한국고분자학회 2015 Macromolecular Research Vol.23 No.11
A novel bisethynyl monomer containing 1,3,4-oxadiazole unit, 2,5 bis(4-propargloxy phenyl)-1,3,4-oxadiazole, was synthesized and polymerized with diazido monomers (2,2 bis[4-(4-azidobuthyl)phenyl]propan and 1,4- diazidobutane) using ‘‘Click’’ chemistry to form novel polyaromatic ethers contining 1,3,4-oxadiazole and triazole units. The resulting polymers were characterized by using IR(infrared) and 1H NMR (nuclear magnetic resonance) techniques. The molecular weight of the resulting polymers, however, seemed relatively low according to their solution viscosity values [ηinh (inherent viscosity)=0.18 and 0.22 dL/g (deciliter/gram)]. The solubility experiments show that the obtained polymers have lower solubility in organic solvents due to their crystallinity which was confirm by X-ray diffraction but have good solubility in NMP solvent. In addition, the polymers exhibit good thermal stability and relatively high Tg (glass transition temperature) under N2 (Nitrogen) atmosphere.