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Well‐Defined Magnetic Responsive Polymers Containing Ammonium FeCl 4 from ROMP
Author(s) -
Yu Xiaoliang,
Mu Chunyan,
Dai Dongdong,
Yuan Xiaoyan,
Zhang Ke,
Ren Lixia
Publication year - 2016
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201600435
Subject(s) - norbornene , romp , copolymer , polymer chemistry , polymerization , polymer , monomer , polyelectrolyte , materials science , metathesis , chemistry , composite material
Well‐defined magnetic polyelectrolytes with tetrachlorideferrate (FeCl 4 − ) as counter ion are prepared. In this approach, norbornene‐based monomer containing ammonium chloride group (TAENDI‐Cl) is designed and synthesized. Well‐defined magnetic polymers (Poly(TAENDI‐FeCl 4 )) are obtained by ring‐opening metathesis polymerization of TAENDI‐Cl in the presence of Grubbs third generation catalyst followed by complexing with FeCl 3 . Magnetic block copolymers are thus prepared. Both the monomer and polymers are paramagnetic as measured by superconducting quantum interference device method. Studies show that the magnetic susceptibility increases with increasing degree of polymerization (DP) and reaches maximum at DP of 100, and then decreases with increasing DP. Block copolymer with lower FeCl 4 − content shows higher magnetic susceptibility. And, by introducing FeCl 4 − , the polymers show obviously magnetic responsive in solution, powder, and film which have potential applications in magnetic switching, transport, and separation.