Abstract
The magnetic properties of polymers containing tetraphenylporphinatosilver(II) (TPPAg(II)) were investigated by measurement of magnetic susceptibility and ESR spectra and a monomer model. The results reveal that poly[5-(4-acryloyloxyphenyl)-10,15,20-triphenylporphin-atosilver(II)] (polyAOTPPAg(II)) has much stronger antiferromagnetic interaction between TPP-Ag(II) moieties than the monomer models, which indicates that the polymer chain plays an important role for the occurrence of magnetic interaction. A comparison of the magnetic properties of polyAOTPPPAg(II) with that of poly[5-(4-methacryloyloxyphenyl)-10,15,20-triphenylporphin-atosilver(II)] (polyMAOTPPAg(II) showed that the relative location of TPPAg(II) moieties is an important factor for the magnetic ordering. Moreover, the increase in the distance between TPPAg(II) moieties due to MMA units in the copolymers decreased the magnetic interaction. These findings are consistent with the previous concept that the antiferromagnetic exchange interaction in polyAOTPPAg(II) is possibly caused by super-exchange interactions through the C=O group between Ag(II) ions.
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Cheng, X., Kamachi, M., Mori, W. et al. Magnetic Properties of Polymers Containing Tetraphenyl-porphinatosilver(II) as Their Side Chains. Polym J 22, 39–46 (1990). https://doi.org/10.1295/polymj.22.39
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DOI: https://doi.org/10.1295/polymj.22.39