Produção Nacional
Revisado por pares
Non-Enzymatic Impedimetric Sensor Based on 3-Aminophenylboronic Acid Functionalized Screen-Printed Carbon Electrode for Highly Sensitive Glucose Detection
2019; Multidisciplinary Digital Publishing Institute; Volume: 19; Issue: 7 Linguagem: Inglês
10.3390/s19071686
ISSN1424-8220
AutoresRicardo Adriano Dorledo de Faria, Hassan Iden, Luíz Guilherme Dias Heneine, Túlio Matencio, Younès Messaddeq,
Tópico(s)Conducting polymers and applications
ResumoA 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
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