Organometallic Polymers with Ferromagnetic Properties

Zhan-ru, Lin

doi:10.1002/(sici)1521-4095(199909)11:13<1153::aid-adma1153>3.0.co;2-2

Cited by 11 publications

(10 citation statements)

References 4 publications

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“…In recent years, there has been considerable interest in the magnetic properties of novel organic ferromagnets 1–6. The development of organic materials with a magnetic property remains an important challenging goal for chemists.…”

Section: Introductionmentioning

confidence: 99%

Syntheses and magnetic properties of novel bithiazole‐containing polymeric complexes

Weng¹,

Sun²,

Jiang³

2001

J of Applied Polymer Sci

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Three novel bithiazole-containing polymers were synthesized from 2,2Ј-diamino-4, 4Ј-bithiazole (DABT) condensed with bismaleimide, bis(methyloxycarbonyl ethyl)tin dichloride (BETD), and 4,4Ј-diphenylmethane diisocyanate (DPDI), respectively. A new series of polymeric complexes were prepared from Fe 2ϩ and the three polymers. These polymers and their complexes were characterized through FTIR, 1 H-NMR, and related techniques. The chemical compositions of the complexes were determined by XPS. The presence of the exchange interaction between the unpaired electrons was investigated by ESR spectroscopy. The magnetic behavior of these complexes was measured as a function of the magnetic field strength (0 -40 kOe) at 5 K and as a function of temperature (5-300 K) at a magnetic field strength of 30 kOe.

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Section: Introductionmentioning

confidence: 99%

Syntheses and magnetic properties of novel bithiazole‐containing polymeric complexes

Weng¹,

Sun²,

Jiang³

2001

J of Applied Polymer Sci

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“…Their magnetic mechanism is different from inorganic magnet . Another type of structural magnetic polymer is organometallic polymers which contain metallocenes or organometals . To our knowledge, there are no reports on the preparation of structural magnetic homopolymers and block copolymers with well‐defined structure to date.…”

Section: Introductionmentioning

confidence: 99%

Well‐Defined Magnetic Responsive Polymers Containing Ammonium FeCl₄ from ROMP

Dai

et al. 2016

Macro Chemistry & Physics

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Well‐defined magnetic polyelectrolytes with tetrachlorideferrate (FeCl4−) 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‐FeCl4)) are obtained by ring‐opening metathesis polymerization of TAENDI‐Cl in the presence of Grubbs third generation catalyst followed by complexing with FeCl3. 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 FeCl4− content shows higher magnetic susceptibility. And, by introducing FeCl4−, the polymers show obviously magnetic responsive in solution, powder, and film which have potential applications in magnetic switching, transport, and separation.

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“…Additionally, different chain geometries, degrees of polymerization, types of bonding (covalent or supramolecular) and variation of other parameters of the primary chemical structure provide access to new and versatile classes of functional materials. 10 The presence of metals in their main chain or side groups enables organometallic polymers to potentially play an unprecedented role in advanced technology in areas including nanoscale manufacturing, 11,12 ceramics precursors, 13 ferromagnetic materials, 14 separation, drug delivery, 15 molecular motors 16 and actuators, 17 photovoltaic devices, 18 catalysis, 19 sensing, energy conversion and storage, etc.…”

Section: Introductionmentioning

confidence: 99%