Synthesis of pyridine-based poly(N-arylenebenzimidazole sulfone)

• Published in: Chinese chemical letters Vol. 23; no. 7; pp. 871 - 874
• Main Authors: Xu, Ye Wei, Tang, Jie, Chang, Guan Jun, Zhu, Fang Hua, Zhang, Lin
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2012; Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China%School of Chemistry and Chemical Engineering, Mianyang Normal University, Mianyang 621000, China
• Subjects: Poly(N-arylenebenzimidazole pyridine sulfone); Polybenzimidazoles; Solubility; Thermal properties; Thermal properties; Polybenzimidazoles; Poly(N-arylenebenzimidazole pyridine sulfone); Solubility; Poly(N-arylenebenzimidazoie pyridine sulfone)
• ISSN: 1001-8417; 1878-5964
• DOI: 10.1016/j.cclet.2012.04.028

Poly(N-arylenebenzimidazole pyridine sulfone) (PNABIPS) has been prepared via the aromatic nucleophilic displacement reaction of 2,6-bis(2-benzimidazoly)pyridine (BBP) with bis(4-fluorophenyl) sulfone. BBP was synthesized by reaction of 2,6-pyridinedicarboxylic acid with 1,2-phenylenediamine in polyphosphoric acid. The chemical structure of BBP was confirmed by FT-IR, HRMS, 1H NMR and 13C NMR. The characterization of the polymer was performed with FT-IR, 1H NMR, elemental analysis, GPC, XRD, DSC, TGA and solubility tests. The polymer was obtained in quantitative yield with Mn value 12,600 and Mw value 28,300, respectively. DSC and TGA measurements show that the glass transition temperature (Tg) is 312°C and 5% weight loss temperature is 434°C in nitrogen and 545°C in air, respectively. In addition, the novel polymer exhibits good solubility, which can be dissolved in common organic solvent at room temperature.