ABSTRACT
Lewis pair polymerization is a powerful method for preparing soluble polymers bearing pendant active vinyl groups by directly polymerizing dissymmetric divinyl polar monomers. Herein, we present a strategy for synthesizing block and brush copolymers via tandem Lewis pair polymerization of methacrylates, "thiol-ene" click reaction and organocatalytic ring-opening polymerization of lactide.
Subject(s)
Lewis Acids/chemistry , Lewis Bases/chemistry , Polymerization , Polymers/chemistry , Polymers/chemical synthesis , Catalysis , Chromatography, Gel , Polyesters/chemical synthesis , Polyesters/chemistry , Polymethyl Methacrylate/chemical synthesis , Polymethyl Methacrylate/chemistry , Proton Magnetic Resonance Spectroscopy , Spectrometry, Mass, Electrospray IonizationABSTRACT
Lewis pair cooperation provides a facile approach for polymerizing dissymmetric divinyl polar monomers such as 4-vinylbenzyl methacrylate in excellent regioselectivity and high reactivity at mild conditions, affording soluble polymers bearing pendant active vinyl groups with high molecular weight (up to 6.4 × 105 g/mol) and narrow polydispersity (PDI < 1.5). ESI-TOF MS study demonstrated that the polymerization process only concerned the methacrylic double bond and selectively remained the pendant allylic or styrene CâC bond.
