Synthesis, and Structural and Thermal Characterizations of Tetrasulfonated Poly(arylene biphenylsulfone ether) Copolymer Ion Conducting Electrolytes

Bulletin of the Korean chemical society

Dong Jin Yoo¹  Kee Suk Nahm¹  G. Gnana Kumar¹  Seung Hak Hyun¹  Ae Rhan Kim¹ 

关键词: Molecular weight;    Tetrasulfonated monomer;    Tetrasulfonated poly(arylene biphenylsulfone ether);    Thermal stability;    Ionic conductivity;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

High molecular weight tetrasulfonated poly(arylene biphenylsulfone ether) (TsPBPSEH) copolymers containing up to four pendant sulfonate groups per repeat unit were synthesized via aromatic nucleophilic displacement condensation from 4,4`-bis(4-chloro-3-sulfonatophenylsulfonyl)biphenyl-2,2`-disulfonate (SBCSBPD), 4,4`- dichlorodiphenylsulfone (DCDPS) and 4,4`-(hexafluoroisopropylidene)diphenol (6F-BPA). The synthesized copolymers were structurally characterized using 1H NMR and FT-IR techniques. They were analytically pure, amorphous and were readily soluble in a wide range of organic solvents. Electrolyte membranes were successfully cast using the synthesized polymers with various sulfonation levels and N-methyl-2-pyrrolidinone. This new class of polymer membranes exhibited elevated thermal and physical stabilities and reduced swelling at high temperatures. An increase of acidic functional groups in the copolymer yielded high ion exchange capacity and moderate ionic conductivity values even at higher temperatures, which makes them potential ion conducting candidates.

【 授权许可】

Unknown