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Reversibly Dispersible/Collectable Metal‐Organic Frameworks Prepared by Grafting Thermally Responsive and Switchable Polymers
Author(s) -
Liu Heyang,
Zhu He,
Zhu Shiping
Publication year - 2015
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201400251
Subject(s) - materials science , lower critical solution temperature , methacrylate , copolymer , atom transfer radical polymerization , polymer , ethylene glycol , polymer chemistry , grafting , chemical engineering , polymerization , dispersion (optics) , composite material , physics , optics , engineering
A reversibly dispersible/collectable metal‐organic framework (MOF) system has been developed. The MOF particles were modified by grafting the thermally switchable copolymers of 2‐(2‐methoxyethoxy)ethyl methacrylate and oligo(ethylene glycol) methacrylate through a surface‐initiated atom transfer radical polymerization (SI‐ATRP) approach. The resulted MOF materials preserved their original framework structure and could be readily dispersed in water at room temperature to form stable dispersions. The dispersed MOF particles could also be re‐collected by heating the dispersions to above the lower critical solution temperature (LCST) of the grafted copolymer. The dispersion and collection processes were reversible.