Macromolecular Architectures Designed by Living Radical Polymerization with Organic Catalysts

Abstract

Well-defined diblock and triblock copolymers, star polymers, and concentrated polymer brushes on solid surfaces were prepared using living radical polymerization with organic catalysts. Polymerizations of methyl methacrylate, butyl acrylate, and selected functional methacrylates were performed with a monofunctional initiator, a difunctional initiator, a trifunctional initiator, and a surface-immobilized initiator.

Microwave‐Assisted Reversible Coordination‐Mediated Polymerization for Self‐Healing Hybrid Materials: RGO@PDA Simultaneous as Catalyst and Nanocomposites in One‐Pot

“…Therefore, the development of potentially reversible coordination with PDA can widen its scope of application. In the field of controlled radical polymerization, Goto et al developed a metal‐free “living”/controlled systems of reversible coordination‐mediated polymerization (RCMP), which used reversible coordination of iodine as a capping agent and organic molecules as catalysts for the improvement of controllability. RCMP employs Polymer‐I (dormant species) and catalyst to form reversible coordination for producing Polymer • and includes a sufficiently large number of activation–deactivation cycles.…”

Recent development in halogen-bonding-catalyzed living radical polymerization

“…50 Such high iodide-chain-end fidelity allows efficient block copolymerizations and chain-end modifications. RCMP was used to synthesize a range of di-block, triblock, and multi-block copolymers [78][79][80] and polymers with complex architectures such as star polymers 51,78,81 and hyperbranched copolymers. 82,83 Tri-block copolymers were synthesized from alkyl di-iodides with two initiating moieties (Fig.…”

“…5b). 78 For example, PMMA-b-PBA-b-PMMA and PBA-b-PMMA-b-BA with different (ABA and BAB) sequences were obtained, where PBA is poly(butyl acrylate). 3-Arm star polymers were synthesized from an alkyl tri-iodide (Fig.…”

“…5b). 78 Hyper-branched polymers were synthesized using an inimer containing a polymerizable vinyl group and an alkyl iodide moiety. 83 A temperature-selective radical generation from a designed alkyl di-iodide (I-R 2 -R 1 -I) initiator, 2-iodo-2-(4′-(2″-iodopropionyloxy)phenyl-acetate) (I-MEPE-I) (Fig.…”

“…123,124 Patterned polymer brushes find applications to bio-microarray, molecular recognition, and microelectronic devices, for example. 124 Polymer brushes were obtained via thermal surfaceinitiated RTCP 78 and RCMP. 125 Patterned polymer brushes were obtained via photo-controlled surface-initiated RCMP ( photo-SI-RCMP).…”