Synthesis of pyridine-based poly(N-arylenebenzimidazole sulfone)
Synthesis of pyridine-based poly(N-arylenebenzimidazole sulfone)
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吡啶基聚(N-亚芳基苯并咪唑砜)的合成
DOI：
10.1016/j.cclet.2012.04.028
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Lin Zhang
中科院分区：
文献类型：
--
作者：
Yewei Xu;Jie Tang;Guan;F. Zhu;Lin Zhang
通过2，6-二（2-苯并咪唑基）吡啶（BBP）与二（4-氟苯基）砜的芳香亲核取代反应，合成了聚（N-亚芳基苯并咪唑吡啶砜）（PNABIPS）。以2，6-吡啶二甲酸和1，2-苯二胺为原料，在多聚磷酸中合成了邻苯二甲酸二丁酯（BBP）。通过FT-IR、HRMS、1H NMR和13 C NMR等手段对产物的结构进行了表征。采用FT-IR、1H NMR、元素分析、GPC、XRD、DSC、TGA和溶解性测试等手段对聚合物进行了表征。以定量产率获得Mn值分别为12，600和Mw值为28，300的聚合物。DSC和TGA测量显示玻璃化转变温度（Tg）为312°C，并且在氮气中和在空气中的5%重量损失温度分别为434°C和545°C。此外，该新型聚合物具有良好的溶解性，在室温下可溶解于普通有机溶剂中。
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 and13C 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 Mnvalue 12,600 and Mwvalue 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.