Synthesis of dielectric polymers with bipyridyl ligand and metal complex by ring-opening metathesis polymerization. (28th September 2021)

• Record Type: Journal Article
• Authors: Gong, Jun; Ma, Cuihong; Quan, Ying; Sun, Ruyi; Liao, Xiaojuan; Peng, Hui; Xie, Meiran
• Is Part Of: Polymer. Volume 231(2021)
• Publication Date: 2021-09-28
• Subjects: Ring-opening metathesis polymerization -- Bipyridyl-metal ion-contained block copolymers -- Dielectric and energy storage performance; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2021.124127
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: Block copolymers with bipyridyl ligand and metal ion complex were synthesized by ring-opening metathesis polymerization. The combination of high dipolar polarization induced by bis(trifluoromethyl) group in polymer, the long-range polaron hopping process produced by the introduction of metal-bipyridyl side group, and the self-assembled nanostructure significantly improved the dielectric properties of polymers. The iridium(III)-contained block copolymer exhibited outstanding comprehensive dielectric and energy storage performance with high dielectric constant of 23.0–20.3 and low dielectric loss of 0.032–0.013 at 10 2 –10 6 Hz, and high polarizability of 3.14 μC cm −2 at 280 MV m −1 . Besides, the released-stored energy density reached 4.17/4.86 J cm −3 accompanied with the charge-discharge efficiency of 86%. Therefore, it would have potential applications as a metal-organic dielectric material with good dielectric and energy storage properties. Graphical abstract: Image 1 Highlights: Block copolymers with bipyridyl ligand and metal complex was synthesized by ROMP. Ir(III)-contained polymer displayed high dielectric constant of 23 and low dielectric loss of 0.032. Ir(III)-contained polymer exhibited energy storage density of 4.86 J cm −3 with efficiency of 86%.