VGU RESEARCH REPOSITORY
Please use this identifier to cite or link to this item:
https://epub.vgu.edu.vn/handle/dlibvgu/148
Title: | Cyclic voltammetric and quantum chemical studies of a poly (methionine) modified carbon paste electrode for simultaneous detection of dopamine and uric acid | Authors: | Bananakere Nanjegowda Chandrashekar Weizhong Lv Gururaj Kudur Jayaprakash Karim Harrath Louis W. Y. Liu Bahaddurghatta E. Kumara Swamy |
Keywords: | poly(methionine);Dopamine;Cyclic voltammetry;Fukui functions;Electrostatic potential | Issue Date: | 2019 | Publisher: | MDPI | Series/Report no.: | Chemosensors;Vol. 7 (2) | Abstract: | 24 - 32 Fabrication of biocompatible electrodes for the investigation of catecholamines is a known challenge. In this work, methionine was chosen as a modifier for fabrication of a biocompatible carbon paste electrode by electropolymerization, through cyclic voltammetry. The electrochemical behavior of the poly(methionine) modified carbon paste electrode was characterized by cyclic voltammetry for simultaneous determination of dopamine (DA) and uric acid (UA) in a phosphate-buffered solution at pH 7.0. In the absence of an amino acid methionine layer, the bare carbon paste electrode exhibits rather poor voltammetric signals in DA and UA in the binary mixture, with oxidation potentials of DA and UA overlapping with each other. The poly(methionine) modified carbon paste electrode exhibits good catalytic activity with noticeably different oxidation potentials of DA and UA. The experimental results closely agree with the theoretical prediction based on a Fukui function complementary to the simulated electrostatic potential maps. |
URI(1): | http://epub.vgu.edu.vn/handle/dlibvgu/148 | DOI: | 10.3390/chemosensors7020024 |
Appears in Collections: | ARTICLE/BOOK PUBLICATION |
Files in This Item:
Page view(s)
43
checked on Apr 22, 2025
Download(s)
64
checked on Apr 22, 2025
Google ScholarTM
Check
Altmetric
Altmetric
Items are protected by © Copyright of Vietnamese - German University Library