Polymer materials magnetic properties

The straightforward synthetic routes to generate sophisticated star-shaped polydentate N-ligands 334 have allowed the preparation of molecular cages 335 with applications in catalysis or separation, coordination polymers with magnetic properties or host-guest cavities, and anion-hosting materials (Equation 71). 

The general structure of this class of materials can, therefore, be summarized as a fine dispersion of metal oxide in a polymer matrix very similar to plasma polytetrafluoroethylene and in principle any metal should be able to be incorporated. Clearly, if the films are protected from the atmosphere, for metals which form involatile fluorides having a relatively weak metal-fluorine bond strength, it should be possible to produce films having metal atoms dispersed in the matrix. It is expected that these films will have many interesting chemical, optical, electrical and magnetic properties., ... 

Polyoxometalates are important catalysts but they are also finding application in optical, electrical, and magnetic devices. Mixed-metal polyoxometalates with vanadium(V) in the polyoxoanion core confers enhanced properties to such structures, principally in their ability to form essentially infinite networks that can be utilized as coatings or as other thin film materials. Additionally, these materials have tunable electromagnetic and photochromic properties. In combination with organic polymers, so-called hybrid polymers, special electrochemical properties are conferred, making possible such electrical storage devices such as capacitors and batteries that utilize the redox properties of the polyoxometalate [7],... 

Semiconductor and metallic nanoparticles have been extensively studied as active components in wide variety of basic research and technological applications due to their new or improved optical, electric, and magnetic properties compared to their bulk counterparts [1]. Therefore, exploitation of well-known materials in their new nanosized forms is strongly motivated area of research. Prussian Blue [2], an old pigment, is a coordination polymer formed by reaction of either hexacyanoferrate(II) anions with ferric (Fe(III)) cations, or hexacyanoferrate(III) anions with ferrous (Fe(II)) cations [3], According to X-... 

The principal magnetic properties of polymers are the diamagnetic susceptibility and the magnetic resonance. The former is a property of the material as a whole the latter is connected with magnetic moments of electrons and nuclei within the material. 

---