An Ascorbic Acid-Imprinted Poly(o-phenylenediamine)/AuNPs@COFTFPB-NBPDA for Electrochemical Sensing Ascorbic Acid
نویسندگان
چکیده
An electrochemical sensor based on a molecularly imprinted polymer membrane (MIP) was developed. The prepared by electropolymerization of o-phenylenediamine (O-PD) the surface glassy carbon electrode (GCE), modified AuNPs@covalent organic framework (COF) microspheres with ascorbic acid (AA) as template molecule. First, ultrasmall polyvinylpyrrolidone (PVP)-coated AuNPs were chemical reduction method. Then, 1,3,5-tri(p-formylphenyl)benzene (TFPB) and N-boc-1,4-phenylene diamine (NBPDA) underwent an ammonaldehyde condensation reaction PVP-coated to form AuNPs@COFTFPB-NBPDA microspheres. porous spherical structure AuNPs@ COFTFPB-NBPDA could accelerate mass transfer, enlarge specific area, enhance catalytic activity AuNPs. sensors, COFTFPB-NBPDA/GCE nMIPs/AuNPs@COFTFPB-NBPDA/GCE, applied for detection AA, limit 1.69 2.57 μM, well linear ranges 5.07 60 mM 7.81 mM. nMIPs/AuNPs@COFTFPB-NBPDA had satisfactory stability, selectivity, reproducibility AA detection.
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ژورنال
عنوان ژورنال: Chemosensors
سال: 2022
ISSN: ['2227-9040']
DOI: https://doi.org/10.3390/chemosensors10100407