Coating the Right Polymer: Achieving Ideal Metal–Organic Framework Particle Dispersibility in Polymer Matrixes Using a Coordinative Crosslinking Surface Modification Method

This work describes the first generalizable method to modify various metal–organic framework (MOF) surfaces with polyimide, polysulfone, polycarbonate, and polymer of intrinsic microporosity‐1 (PIM‐1). The method first utilizes electrostatic adsorption to rapidly decorate positively charged MOF surf...

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Bibliographic Details
Published in:Angewandte Chemie 2021-06, Vol.133 (25), p.14257-14264
Main Authors: Li, Conger, Liu, Junhong, Zhang, Kexin, Zhang, Songwei, Lee, Yongjin, Li, Tao
Format: Article
Language:English
Subjects:
Chemistry
composites
coordinative crosslinking
Crosslinking
dispersibility
Functional groups
Immobilization
Metal-organic frameworks
Metals
metal–organic framework
Microporosity
Polycarbonate
Polymer coatings
Polymers
Polysulfone
Polysulfone resins
surface modification
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Summary:This work describes the first generalizable method to modify various metal–organic framework (MOF) surfaces with polyimide, polysulfone, polycarbonate, and polymer of intrinsic microporosity‐1 (PIM‐1). The method first utilizes electrostatic adsorption to rapidly decorate positively charged MOF surfaces with a layer of negatively charged metal‐organic nanocapsule, PgC5Cu. After mixing with the polymer, the copper open metal sites on PgC5Cu can coordinatively crosslink the polar functional groups on the surface polymer upon thermal activation thereby resulting in the immobilization of a uniform sub‐10 nm polymer coating. We quantitatively analyzed the distribution of free path spacing between MOF particles and demonstrated that when the surface polymer matches the matrix polymer, the MOF dispersion was not only visually improved but also found to align perfectly with a theoretically predicted ideal dispersion model where no aggregation driving force was present. A new general method for the coating of metal–organic framework (MOF) surfaces with a uniform layer of polyimide, polysulfone, polycarbonate, or polymer of intrinsic microporosity‐1 (PIM‐1) is reported. By matching the surface polymer with the matrix polymer, ideal dispersibility of MOF particles in various polymer matrices can thus be achieved.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.202104487