Constructing a Library of Doubly Grafted Polymers by a One-Shot Cu-Catalyzed Multicomponent Grafting Strategy

Abstract

Doubly grafted polymers bearing two different macromolecular side groups in each repeat unit of the polymer backbone have received considerable attention because of their unique molecular structures and properties. However, the preparation of these polymers is challenging because of the synthetic difficulty arising from their steric crowding and structural complexity. Here, based on the diversity-oriented polymerization concept, we report the synthesis of well-defined doubly grafted polymers at 30 °C using a one-shot Cu-catalyzed multicomponent grafting strategy using readily accessible precursor polymers possessing sulfonyl azides and alkyne and amine macromonomers. Based on this strategy, we prepared 35 doubly grafted polymers. Detailed 1 H NMR and SEC analyses revealed high grafting efficiency (79−99%) and narrow-to-moderate dispersities of the welldefined doubly grafted polymers.

Tailoring the Architecture of Molecular Bottlebrushes via Click Grafting‐Onto Strategy

“…Very recently, they reported the synthesis of MBBs with doubly grafted dendritic SCs at 30 °C via a one‐shot Cu‐catalyzed multicomponent reaction through grafting onto strategy using readily accessible polymer backbone with sulfonyl azido dangling groups and alkyne‐ and amine‐terminated dendron SCs, as shown in Figure . [ 26 ]…”

Diversity-oriented synthesis of chemically recyclable poly(sulfonamide ester)s through organocatalytic aziridine-based multicomponent polymerization

“…Multicomponent synthesis of graft polymers has attracted considerable interest in the polymer community since it allows for the one-pot construction of graft architectures with diverse chemical compositions, resulting in a wide range of physical and chemical properties. 40,41 Herein, we propose to use multicomponent polymerization, involving a tandem ring-opening reaction of cyclic anhydride/aziridine, to produce graft polymers. Initially, we treated 4,4′-oxydiphthalic anhydride 4a (1.0 equiv.)…”

From macromonomers to bottlebrush copolymers with sequence control: synthesis, properties, and applications

“…9c. 134 The release of N 2 facilitated the nucleophilic addition of amine-terminated MMs, generating Janus-BBCPs in high conversions (79–99%). Even sterically congested second-generation dendrons could be installed, highlighting the high versatility of this strategy (Fig.…”