Controlled radical fluorination of poly(meth)acrylic acids in aqueous solution
作者: Dong, Yucheng; Wang, Zhentao; Li, Chaozhong
NATURE COMMUNICATIONS 卷: 8 文献号: 277 出版年: AUG 17 2017
Fluorinated alkenes exhibit very poor reactivity in copolymerization with non-fluorinated
polar monomers such as acrylates. Herein we describe a convenient method for the synthesis
of poly(vinyl fluoride-co-acrylic acid) and poly(2-fluoropropene-co-methacrylic acid)
copolymers. Thus, the silver-catalyzed decarboxylative radical fluorination of poly(acrylic
acid) with Selectfluor in water at room temperature affords poly(vinyl fluoride-co-acrylic
acid) copolymers in high yields with well-defined molecular weights and polydispersities.
A linear correlation is observed between the extent of fluorination and the
amount of Selectfluor, indicating that the copolymer of virtually any monomer ratio
can be readily accessed by controlling the amount of Selectfluor. This controlled
decarboxylative fluorination is extended to poly(methacrylic acid), leading to well-defined
poly(2-fluoropropene-co-methacrylic acid) copolymers.