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http://hdl.handle.net/1843/57518| Tipo: | Artigo de Periódico |
| Título: | Non-enzymatic impedimetric sensor based on 3-aminophenylboronic acid functionalized screen-printed carbon electrode for highly sensitive glucose detection |
| Autor(es): | Ricardo Adriano Dorledo de Faria Hassan Iden Luiz Guilherme Dias Heneine Tulio Matencio Younès Messaddeq |
| Resumen: | A highly sensitive glucose sensor was prepared by a one-step method using 3-aminophenyl boronic acid as a unit of recognition and a screen-printed carbon electrode (SPCE) as an electrochemical transducer. Scanning Electron Microscopy confirmed the success of the functionalization of the SPCE due to the presence of clusters of boronic acid distributed on the carbon surface. In agreement with the Electrochemical Impedance Spectroscopy (EIS) tests performed before and after the functionalization, Cyclic Voltammetry results indicated that the electroactivity of the electrode decreased 37.9% owing to the presence of the poly phenylboronic acid on the electrode surface. EIS revealed that the sensor was capable to selectively detect glucose at a broad range of concentrations (limit of detection of 8.53 × 10−9 M), not recognizing fructose and sucrose. The device presented a stable impedimetric response when immediately prepared but suffered the influence of the storage time and some interfering species (dopamine, NaCl and animal serum). The response time at optimized conditions was estimated to be equal to 4.0 ± 0.6 s. |
| Asunto: | Eletroquímica Detectores eletroquímicos Espectroscopia de impedância Glicose |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Institución: | UFMG |
| Departamento: | ENG - DEPARTAMENTO DE ENGENHARIA QUÍMICA ICX - DEPARTAMENTO DE QUÍMICA |
| Tipo de acceso: | Acesso Aberto |
| Identificador DOI: | https://doi.org/10.3390/s19071686 |
| URI: | http://hdl.handle.net/1843/57518 |
| Fecha del documento: | 2019 |
| metadata.dc.url.externa: | https://www.mdpi.com/1424-8220/19/7/1686 |
| metadata.dc.relation.ispartof: | Sensors |
| Aparece en las colecciones: | Artigo de Periódico |
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| archivo | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| Non-enzymatic impedimetric sensor based on 3-aminophenylboronic acid functionalized screen-printed carbon electrode for highly sensitive glucose detection.pdf | 4.2 MB | Adobe PDF | Visualizar/Abrir |
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