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Anionic Polymerization in Porous Organic Frameworks: A Strategy to Fabricate Anchored Polymers and Copolymers
Author(s) -
Perego Jacopo,
Bracco Silvia,
Comotti Angiolina,
Piga Daniele,
Bassanetti Irene,
Sozzani Piero
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202014975
Subject(s) - copolymer , polymer , polymerization , nanoparticle , materials science , polymer chemistry , anionic addition polymerization , chemical engineering , porosity , covalent bond , chemistry , nanotechnology , organic chemistry , composite material , engineering
An anionic mechanism is used to create polymers and copolymers as confined to, or anchored to, high‐surface‐area porous nanoparticles. Linear polymers with soft and glassy chains, such as polyisoprene and polymethylmethacrylate, were produced by confined anionic polymerization in 3D networks of porous aromatic frameworks. Alternatively, multiple anions were generated on the designed frameworks which bear removal protons at selected positions, and initiate chain propagation, resulting in chains covalently connected to the 3D network. Such growth can continue outside the pores to produce polymer‐matrix nanoparticles coated with anchored chains. Sequential reactions were promoted by the living character of this anionic propagation, yielding nanoparticles that were covered by a second polymer anchored by anionic block copolymerization. The intimacy of the matrix and the grown‐in polymers was demonstrated by magnetization transfer across the interfaces in 2D 1 H‐ 13 C‐HETCOR NMR spectra.