Poly(4-vinylpyridine) polyHIPEs as catalysts for cycloaddition click reaction. (22nd September 2017)

• Record Type: Journal Article
• Authors: Koler, Amadeja; Paljevac, Muzafera; Cmager, Nuša; Iskra, Jernej; Kolar, Mitja; Krajnc, Peter
• Is Part Of: Polymer. Volume 126(2017)
• Page Start: 402
• Page End: 407
• Publication Date: 2017-09-22
• Subjects: polyHIPE -- Polyvinylpyridine -- Supported catalysis; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2017.04.051
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: Poly(4-vinylpyridine- co -divinylbenzene) polyHIPE was prepared with 80% porosity and a typical cellular interconnected topology. Up to 25% of 4-vinylpyridine (VP) was introduced into polymer. PolyHIPE was additionally crosslinked (hypercrosslinked) via the post polymerisation radical treatment and an increase of specific surface area was observed. New polymer was functionalized via the loading of copper (II) and it was demonstrated that it can be efficiently used as a solid supported catalyst for the azomethine imine-alkyne cycloaddition click reaction. A cycloadduct of bimane analogue was formed in high yield and purity. Graphical abstract: Highlights: Synthesis of crosslinked 4-vinylpyridine macroporous open cellular polyHIPE. Hypercrosslinking of 4-vinylpyridine polyHIPE for introduction of mesoporosity and increasing surface area. Immobilization of copper (II) thus creating heterogenuous catalyst for cycloaddition click reactions.