Synthesis and conductivity of hyperbranched poly(triazolium)s with various end-capping groups. Issue 3 (30th November 2015)

• Record Type: Journal Article
• Authors: Wu, Jianhua; Chen, Jie; Wang, Junfang; Liao, Xiaojuan; Xie, Meiran; Sun, Ruyi
• Is Part Of: Polymer chemistry. Volume 7:Issue 3(2016)
• Page Start: 633
• Page End: 642
• Publication Date: 2015-11-30
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/c5py01735a
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : Hyperbranched poly(triazolium)s bearing different terminal groups were synthesized, and displayed an elevated conductivity upon the introduction of various flexible end-capped groups and the increase of temperature. Abstract : A series of novel hyperbranched poly(triazolium)s with different terminal groups were synthesized by alkylation and anion exchange reactions of the corresponding hyperbranched poly(triazole)s, which were obtained from an AB2 -type monomer via Cu(i )-catalyzed azide–alkyne cycloaddition polymerization. The hyperbranched poly(triazolium)s showed high thermal stability with decomposition temperatures of 328–361 °C, and good flexibility, with glass transition temperatures ( T g ) ranging from −6.2 to −14.9 °C. Among them, an oligo(ethylene glycol)-terminated hyperbranched poly(triazolium) presented the lowest T g of −14.9 °C, the highest ionic conductivity (7.70 × 10 −6 S cm −1 at 30 °C and 1.02 × 10 −3 S cm −1 at 110 °C) and a wide electrochemical stability window of 6.0 V. Therefore, these hyperbranched poly(triazolium)s could act as new electrolyte materials.