Development of molecularly imprinted polymer for the selective recognition of the weakly interacting fenamiphos molecule

The possible manufacture of Molecularly Imprinted Polymers (MIPs) under the conditions weak interaction between functional monomer and template molecule is addressed with help case Fenamiphos organophosphorus insecticide. choice by investigating MIPs prepared surface imprinting technique using three very different types monomers (methacrylic acid, 4-vinylpyridine 2–(methacryloyloxyethyl)trimethylammonium chloride), a solid silica support grafted 3-mercaptopropyltrimethoxysilane on its surface; ethylene glycol dimethacrylate as cross-linker acetonitrile solvent. materials were characterized IR, state 13C NMR, TGA, DLS, BET TEM. Their performance adsorbents evaluated modeling their experimental adsorption isotherms Langmuir–Volmer model. All show similar adsorbent although quite interactions fenamiphos weak. latter assessed 1H 31P NMR experiments in DMSO?d6 solution. process presented weakly exothermic endothermic behavior onto molecular imprints non-specific sites respectively. selectivity for respect to sulfone sulfoxide metabolites was high.