期刊
MONATSHEFTE FUR CHEMIE
卷 153, 期 12, 页码 1129-1135出版社
SPRINGER WIEN
DOI: 10.1007/s00706-022-02997-7
关键词
Nanographene; D-Glucose sensor; Electrochemical impedance spectroscopy; Capacitance; Paper electrodes
资金
- Sao Paulo Research Foundation (FAPESP) [2017/10522-5, 2018/14425-7, 2018/08782-1, 2018/13922-7, 2019/11214-8]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior [001, 25/2014]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [305605/2017-8, 302839/2020-8, 145833/2020-8]
In this proof-of-concept study, laser-pyrolyzed paper was used as supporting electrodes for the swift, impedimetric, and enzymeless detection of D-glucose using molecularly imprinted polymer. The results showed good analytical performance, reproducibility, and selectivity.
In this proof-of-concept study, we used laser-pyrolyzed paper as the supporting electrodes for the swift, impedimetric, and enzymeless detection of D-glucose by the means of molecularly imprinted polymer. Molecular imprinting of monomer 3-amino-4-hydroxybenzoic acid was performed by electrochemical polymerization in the presence of D-glucoseas a template molecule, followed by the template removal process via cyclic voltammetry in PBS (pH = 7.4). The analytical capacitance signal was extracted from the raw electrochemical impedance spectra recorded after only 60 s of incubation with the analyte. The electrodes were characterized by Raman spectroscopy and scanning electron microscopy to disclose their structural and morphological properties, revealing the presence of nanographene of high porosity. The analytical performance was investigated in the clinically relevant range of 0-30 mmol dm(-3), which demonstrated good linearity (r(2) = 0.97), decent limit of detection (1.77 mmol dm(-3)), an excellent selectivity (a = 1.38-3.73), and good reproducibility (5.0%).
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