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A series of poly(methyl methacrylate) copolymers with terpyridine units in the side chains was obtained by free radical polymerization. The free terpyridine units were complexed by iron(II) and zinc(II) ions, and the complexation behavior was studied in detail, utilizing UV‐vis and viscosity titration experiments. Complexation of the polymer chains could be observed, which resulted in characteristic UV‐vis absorption bands and an increase in the solution viscosity. Addition of a strong competitive ligand (hydroxyethyl ethylenediaminetriacetic acid, HEEDTA) resulted in an efficient decomplexation. UV‐vis spectra and photos of uncomplexed copolymer 2b before and after complexation with iron(II) ions (in chloroform) and after decomplexation with HEEDTA. magnified image UV‐vis spectra and photos of uncomplexed copolymer 2b before and after complexation with iron(II) ions (in chloroform) and after decomplexation with HEEDTA.
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Hofmeier et al. (2003) studied this question.
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