No abstract

A novel route to organic ferromagnetic materials is proposed that is based on the stability of spin‐containing organometallic moieties such as ferricenium and the electronic or topological interactions contributed by a polymer. The magnetic properties of the new high‐spin polymers (see Figure) are shown to be sensitively dependent on the chemical nature of the bridge linking the ferricenium units.

The synthesis of new functionalized conducting polypyrroles bearing azacrown ethers at C-3 is described; these show selective cation binding on voltammetric cycling in organic media.The functionalization of polypyrrole has been studied for many years through the covalent bonding of various active groups on the nitrogen atom of the pyrrole nucleus, owing to the easy chemical access to such a modified monomer. Thus, the N-substitution of pyrrole with organometallic complexes derived from porphyrins,l cyclam2 or polypyridine3 has led to polypyrroles with promising modified electrode behaviour .However, it has been also largely observed that poly(Nsubstituted pyrroles) possess extremely low conductivity, of the order of 10-4 S cm-1 or less, indicating an important loss of conjugation, which strongly limits the potential interest of these polymers. On the other hand, it has been clearly shown

No abstract

No abstract