Polymer imprinting with iron-oxo-hydroxo clusters: [Fe_6O _2(OH)_2(O_2CC(Cl)CH_2) _(12)(H_2O)_2], [Fe_6O_2(OH) _2(O_2C-Ph-(CH)CH_2)_(12)(H _2O)_2] and [{Fe(O_2CC(Cl)CH_2)(OMe) _2}_(10)]

摘要

We report the syntheses of imprinted polymers using iron-oxo-hydroxo clusters as templates. Three new iron clusters, [Fe_6O _2(OH)_2(O_2CC(Cl)CH_2) _(12)(H_2O)_2] (1), [{Fe(O_2CC(Cl)CH _2)(OMe)_2}_(10)] (2) and [Fe_6O _2(OH)_2(O_2C-Ph-(CH)CH_2) _(12)(H_2O)_2] (3) have been prepared from commercially-available carboxylic acids. Cluster-imprinted-polymers (CIPs) of 1, 2 and 3 were prepared with ethylene glycol dimethacrylate monomer, and of 1 with methyl methacrylate monomer. The imprinted sites within the CIPs were examined using EXAFS and diffuse reflectance UV/vis spectroscopy, demonstrating that the clusters 1, 2 and 3 were incorporated intact within the polymers. Extraction of the clusters from the CIPs imprinted with 1 and 3 gave new polymers that showed evidence of an imprinting effect. This journal is