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Abstract: A novel magnetic molecularly imprinted polymer only based on deep eutectic solvents (DESs-MMIP) was successfully synthesized. The DESs-MMIP was constructed by using 2-hydroxyethyl methacrylate/tetrabutylammonium chloride deep eutectic solvent (DES1) as functional monomer, arylamide/(3-acrylamidopropyl) trimethylammonium chloride deep eutectic solvent (DES2) as cross-linker and bovine hemoglobin (BHb) as template through surface imprinting technology. The obtained DESs-MMIP was characterized by transmission electron microscope, X-ray diffraction, fourier transform infrared spectrometry, thermal gravimetric analysis and vibrating sample magnetometer. Under the optimized conditions, the maximum adsorption capacity of DESs-MMIP on BHb was 229.54 mg g-1 and the imprinting factor reached up to 21.89. The selective adsorption experiments indicated that compared with seven references, DESs-MMIP showed significant selectivity for BHb. The new-type DESs-MMIP exhibited higher adsorption capacity and imprinting factor on BHb than molecularly imprinted polymers constructed with traditional functional monomer and cross-linker in reported methods. The recognition of BHb by DESs-MMIP in calf blood samples demonstrated the practicality of the particles. The DESs-MMIP only based on deep eutectic solvents with excellent selectivity is expected to become an ideal candidate for selective recognition of BHb in complicated samples
Template and target information: protein, bovine hemoglobin, BHb
Author keywords: Deep eutectic solvents, Magnetic molecularly imprinted polymers, surface imprinting, Bovine hemoglobin