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Novel benzimidazole and pyridine-containing poly(ether ether ketone) s with good solubility, thermal properties and fluorescence

  • Hongyang Deng
  • Yewei XuEmail author
  • Hong Lei
  • Yonglin Lei
  • Jichuan Huo
  • Lin ZhangEmail author
ORIGINAL PAPER
  • 32 Downloads

Abstract

3,5-bis(2-benzimidazolyl) pyridine (3,5-BP) is synthesized and a series of benzimidazolyl and pyridyl-containing poly (ether ether ketone) s (mPEEK-BPs) with precise structures and high yield are prepared through a nucleophilic displacement reaction of 3,5-BP, m-dihydroxybenzene and 4,4′-difluorobenzophenone. X-ray diffraction results show that mPEEK-BPs are amorphous. All the synthesized polymers posses high glass transition temperatures (Tg = 211~270 °C) and high thermal stability (Td5% = 506~549 °C in N2, 471~564 °C in air). The polymers have good solubilities in common organic solvents. With the increase of benzimidazole and pyridine units content, the thermal properties and solubility of the as-prepared polymers improved. Additionally, the resulted polymers exhibit excellent fluorescence performance and the fluorescence emission peak appears at 425 nm.

Keywords

PEEKs Solubility Thermal properties Fluorescence properties Benzimidazole· pyridine 

Notes

Acknowledgements

This work was supported by the Scientific Research Fund of Sichuan Provincial Education Department (No. 16ZB0146), National Natural Science Foundation of China (No. 51602267) and Longshan academic talent research supporting program of SWUST (No. 18LZX552).

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Copyright information

© The Polymer Society, Taipei 2019

Authors and Affiliations

  1. 1.Science and Technology on Plasma Physics Laboratory, Research Center of Laser FusionChina Academy of Engineering PhysicsMianyangPeople’s Republic of China
  2. 2.State Key Laboratory of Environmental Friendly Energy Materials & School of Material Science and EngineeringSouthwest University of Science and TechnologyMianyangPeople’s Republic of China

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