Sensing dielectric film based on molecular imprinting nanospheres as well as preparation method and application thereof
A technology of molecular imprinting and nanospheres, which is applied in the field of sensing, can solve the problems of difficult adjustment of solvent parameters and in-situ polymerization of molecular imprinting systems to form films, etc., and achieve the effect of improving quality controllability and expanding types
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Embodiment 1
[0038] Example 1 Preparation of Medium Film Based on Chloramphenicol Molecularly Imprinted Nanospheres
[0039] The molecularly imprinted polymer in this example is chloramphenicol imprinted polymer. The film-forming material is polystyrene (PS) toluene solution. The preparation of chloramphenicol imprinted nanospheres is as follows: the template molecule chloramphenicol (0.1527g) and the functional monomer DEAEM (0.189ml) are fully dissolved in 200mL acetonitrile, mixed thoroughly by ultrasound, and then the cross-linking agent ethylene glycol dimethyl Acrylic acid ester (EGDMA) (2.3625ml) and initiator AIBN (20mg), sealed with N2 for 10min, placed on a rotary evaporator and heated at 70°C. After the reaction and polymerization are complete, the solution is settled and centrifuged, placed in an oven at 60 degrees to dry to remove the solvent, and the white polymer is collected and eluted with methanol-acetic acid (8:2, V / V) solution until it is detected in the eluent. If th...
Embodiment 2
[0043] Example 2 Preparation of Diethylstilbestrol-based Diethylstilbestrol Molecularly Imprinted Nanosphere Dielectric Film
[0044] The molecularly imprinted polymer in this example is diethylstilbestrol imprinted polymer. The film-forming material is polystyrene (PS) toluene solution. The preparation of diethylstilbestrol-imprinted nanospheres is as follows: the template molecule diethylstilbestrol (0.1342 g) and the functional monomer acrylamide (AA) (0.1422 g) were fully dissolved in 100 mL of acetonitrile, mixed thoroughly by ultrasound, and then the cross-linking agent ethylene glycol dimethyl Acrylic acid ester (EGDMA) (1.9ml) and initiator AIBN (19mg), sealed with N2 for 10min, placed on a rotary evaporator and heated at 60°C. After the reaction and polymerization are complete, the solution is settled and centrifuged, placed in an oven at 60 degrees to dry to remove the solvent, and the white polymer is collected and eluted with methanol-acetic acid (8:2, V / V) soluti...
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