Synthesis and characterization of poly(methacrylic acid-co- trimethylolpropane trimethacrylate) imprinted sorbent for analysis of biogenic amines

Publication date: Available online 10 November 2019Source: Materials Today CommunicationsAuthor(s): Monika Sobiech, Dorota Maciejewska, Piotr LuliÅ„skiAbstractIn this paper, poly(methacrylic acid-co-trimethylolpropane trimethacrylate) imprinted sorbent was constructed from equimolar amounts of cross-linker and selected ethylammonium methacrylates which were synthesized from respective ethylamines with very good yields (80-97%) prior to polymerization. The structure of resulted polymers was characterized by spectroscopy and thermogravimetry and the morphology was examined by scanning electron microscopy and porosity analyses. The adsorption behavior of obtained materials was evaluated towards various biogenic amines revealing significant difference in the binding capacities notably between tryptamine and norepinephrine (43.1 ± 5.2 to 14.3 ± 1.7 µmol g-1 and 20.2 ± 1.8 to 7.79 ± 0.68 µmol g-1 on MIP and NIP, respectively). Strong electrostatic interactions between analytes and MIPs could be recognized as the main forces responsible for adsorption but the effect of ethylammonium methacrylate was less expressive. Poly(methacrylic acid-co-trimethylolpropane trimethacrylate) prepared from 2-phenyethylammonium methacrylate was characterized by highest affinity towards model biogenic amine, dopamine (AF = 3.04) with heterogeneous population of binding sites. The analysis of the separation of dopamine from spiked artificial urine sample revealed its high binding capacity (46.9 Â...
Source: Materials Today Communications - Category: Materials Science Source Type: research