Nugraha, Adam F.; Kim, Songmi; Wijaya, Farid; Bae, Byungchan; Shin, Dongwon published an article in 2020, the title of the article was Synthetic approaches for poly(phenylene) block copolymers via nickel coupling reaction for fuel cell applications.Reference of 4,4′-Sulfonylbis(chlorobenzene) And the article contains the following content:
Several methods to synthesize poly(phenylene) block copolymers through the nickel coupling reaction were attempted to reduce the use of expensive nickel catalysts in polymerization The model reaction for poly(phenylene) having different types of dichlorobenzene derivative monomers illustrated the potential use of cost-effective catalysts, such as NiBr2 and NiCl2, as alternatives to more expensive catalysts (e.g., bis(1,5-cyclooctadiene)nickel(0) (Ni(COD)2)). By catalyzing the polymerization of multi-block poly(phenylene) with NiBr2 and NiCl2, random copolymers with similar mol. weights could be prepared However, these catalysts did not result in a high-mol.-weight polymer, limiting their wide scale application. Further, the amount of Ni(COD)2 could be reduced in this study by approx. 50% to synthesize poly(phenylene) multi-block copolymers, representing significant cost savings. Gel permeation chromatog. and NMR results showed that the d.p. and ion exchange capacity of the copolymers were almost the same as those achieved through conventional polymerization using 2.5 times as much Ni(COD)2. The flexible quaternized membrane showed higher chloride ion conductivity than com. Fumatech membranes with comparable water uptake and promising chem. stability. The experimental process involved the reaction of 4,4′-Sulfonylbis(chlorobenzene)(cas: 80-07-9).Reference of 4,4′-Sulfonylbis(chlorobenzene)
The Article related to polyphenylene polyethersulfone block copolymer anion exchange membrane fuel cell, nickel coupling reaction, anion-exchange membranes, ion conductivity, multi-block copolymer, poly(phenylene) and other aspects.Reference of 4,4′-Sulfonylbis(chlorobenzene)
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