Emergence of paramagnetism in organic macromolecules during synthesis

摘要

Paramagnetism in polyaniline can be generated during synthesis if cerium (IV) ammonium nitrate (CAN) is used as a polymerizing (oxidizing) agent. During the reaction, in situ formation of Ce ~(3+) ions are doped in the spherical polyaniline particles and show paramagnetic behavior throughout the experimental temperature range (400-1.9 K). The result indicated that the Ce ~(3+) ions covalently functionalized with the chain nitrogen of the polyaniline.