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Sequestration of Trace Metals Using Water‐Soluble and Fluorous Phase‐Soluble Polymers
Author(s) -
Bergbreiter David E.,
Koshti Nirmal,
Franchina Justine G.,
Frels Jonathon D.
Publication year - 2000
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(20000317)39:6<1039::aid-anie1039>3.0.co;2-4
Subject(s) - polymer , solubility , metal ions in aqueous solution , aqueous solution , chemistry , metal , copolymer , phase (matter) , aqueous two phase system , hydroxamic acid , polymer chemistry , inorganic chemistry , organic chemistry
Ion ‐ exchange polymers with “on”/“off” solubility can be prepared from N ‐isopropylacrylamide (PNIPAM) copolymers that incorporate hydroxamic acid ligands. Such complexing agents quantitatively remove trace amounts of Fe III from aqueous solutions (vial 1) by precipitating the metal – polymer complex on heating (suspension in vial 2). Physical separation of the insoluble polymer leaves a metal‐free solution (vial 3). Similar fluorous phase‐soluble hydroxamic acid derivatives of fluoroacrylate polymers remove Fe III ions from organic solutions by liquid/liquid phase separation.