The magnetic properties of polymers containing nitroxyl, tetraphenylporphin (TPP)-Cu(II), -Ag(II), or -Co(II) in the side chains were studied by ESR and magnetic susceptibility(χM) measurements. The values of χM for the polymers containing nitroxyl, TPP-Cu(II), and -Co(II) were found to obey the Curie-Weiss law, and their magnetic moments showed the occurrence of a weak antiferromagnetic interaction between paramagnetic species. The value of χM for the polymer containing TPP-Ag(II) showed the presence of strongly interacting sites. This strong interaction possibly arises from a hyperexchange interaction through the CO group situated among the Ag(II) ions. Polymers containing TPP-Co(II) adsorb oxygen below 180 K and the ratio of O2:Co(II) was found to be 1:1 at 77 K.
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Nozakura et al. (1985) studied this question.
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