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Poly(glycine)/graphene oxide modified glassy carbon electrode: Preparation, characterization and simultaneous electrochemical determination of dopamine, uric acid, guanine and adenine.
Anal Chim Acta. 2018 Nov 15; 1031:75-82.AC

Abstract

A novel poly(glycine) (p-GLY)/graphene oxide (GO) composite based sensor (p-GLY/GO) was successfully prepared on glassy carbon electrode by simple electropolymerization. Electrochemical responses of analytes on p-GLY/GO modified electrode were studied by cyclic voltammetry and differential pulse voltammetry. The results demonstrated that p-GLY/GO modified electrode showed a favorable application for the simultaneous determination of dopamine (DA), uric acid (UA), guanine (GU) and adenine (AD). Owing to the synergistic effect of p-GLY and GO, the oxidation peaks of four analytes separated well from each other, and the potential separations of oxidation peaks of DA-UA, UA-GU and GU-AD were large up to 170, 350 and 300 mV, respectively. As-prepared p-GLY/GO modified electrode offered wide linear responses for DA, UA, GU and AD over the ranges of 0.20-62, 0.10-105, 0.15-48 and 0.090-103 μM with detection limits of 0.011, 0.061, 0.026 and 0.030 μM (S/N = 3), respectively. Moreover, p-GLY/GO modified electrode presented favorable selectivity, stability and reproducibility, which was a promising candidate as an electrochemical sensor for the simultaneous determination of DA, UA, GU and AD.

Authors+Show Affiliations

School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, PR China; State Key Laboratory for Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, PR China.School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, PR China; Mianyang Kingtiger New Energy Technology Co. Ltd., Mianyang, 621000, Sichuan, PR China. Electronic address: heping@swust.edu.cn.Center of Analysis and Test, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, PR China.School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, PR China.School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, PR China.School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, PR China.Key Laboratory of Solid Waste Treatment and Resource Recycle of Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010, Sichuan, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30119746

Citation

He, Shaoying, et al. "Poly(glycine)/graphene Oxide Modified Glassy Carbon Electrode: Preparation, Characterization and Simultaneous Electrochemical Determination of Dopamine, Uric Acid, Guanine and Adenine." Analytica Chimica Acta, vol. 1031, 2018, pp. 75-82.
He S, He P, Zhang X, et al. Poly(glycine)/graphene oxide modified glassy carbon electrode: Preparation, characterization and simultaneous electrochemical determination of dopamine, uric acid, guanine and adenine. Anal Chim Acta. 2018;1031:75-82.
He, S., He, P., Zhang, X., Zhang, X., Liu, K., Jia, L., & Dong, F. (2018). Poly(glycine)/graphene oxide modified glassy carbon electrode: Preparation, characterization and simultaneous electrochemical determination of dopamine, uric acid, guanine and adenine. Analytica Chimica Acta, 1031, 75-82. https://doi.org/10.1016/j.aca.2018.06.020
He S, et al. Poly(glycine)/graphene Oxide Modified Glassy Carbon Electrode: Preparation, Characterization and Simultaneous Electrochemical Determination of Dopamine, Uric Acid, Guanine and Adenine. Anal Chim Acta. 2018 Nov 15;1031:75-82. PubMed PMID: 30119746.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Poly(glycine)/graphene oxide modified glassy carbon electrode: Preparation, characterization and simultaneous electrochemical determination of dopamine, uric acid, guanine and adenine. AU - He,Shaoying, AU - He,Ping, AU - Zhang,Xingquan, AU - Zhang,Xiaojuan, AU - Liu,Kaili, AU - Jia,Lingpu, AU - Dong,Faqin, Y1 - 2018/06/08/ PY - 2018/05/02/received PY - 2018/06/03/revised PY - 2018/06/07/accepted PY - 2018/8/19/entrez PY - 2018/8/19/pubmed PY - 2018/9/25/medline KW - Graphene oxide KW - Modified electrode KW - Poly(glycine) KW - Sensor SP - 75 EP - 82 JF - Analytica chimica acta JO - Anal Chim Acta VL - 1031 N2 - A novel poly(glycine) (p-GLY)/graphene oxide (GO) composite based sensor (p-GLY/GO) was successfully prepared on glassy carbon electrode by simple electropolymerization. Electrochemical responses of analytes on p-GLY/GO modified electrode were studied by cyclic voltammetry and differential pulse voltammetry. The results demonstrated that p-GLY/GO modified electrode showed a favorable application for the simultaneous determination of dopamine (DA), uric acid (UA), guanine (GU) and adenine (AD). Owing to the synergistic effect of p-GLY and GO, the oxidation peaks of four analytes separated well from each other, and the potential separations of oxidation peaks of DA-UA, UA-GU and GU-AD were large up to 170, 350 and 300 mV, respectively. As-prepared p-GLY/GO modified electrode offered wide linear responses for DA, UA, GU and AD over the ranges of 0.20-62, 0.10-105, 0.15-48 and 0.090-103 μM with detection limits of 0.011, 0.061, 0.026 and 0.030 μM (S/N = 3), respectively. Moreover, p-GLY/GO modified electrode presented favorable selectivity, stability and reproducibility, which was a promising candidate as an electrochemical sensor for the simultaneous determination of DA, UA, GU and AD. SN - 1873-4324 UR - https://www.unboundmedicine.com/medline/citation/30119746/Poly_glycine_/graphene_oxide_modified_glassy_carbon_electrode:_Preparation_characterization_and_simultaneous_electrochemical_determination_of_dopamine_uric_acid_guanine_and_adenine_ DB - PRIME DP - Unbound Medicine ER -