title: Enhanced catalytic and dopamine sensing properties of electrochemically reduced conducting polymer nanocomposite doped with pure graphene oxide.
abstract: Significantly enhanced catalytic activity of a nanocomposite composed of conducting polymer poly (3,4-ethylenedioxythiophene) (PEDOT) doped with graphene oxide (GO) was achieved through a simple electrochemical reduction process. The nanocomposite (PEDOT/GO) was electrodeposited on an electrode and followed by electrochemical reduction, and the obtained reduced nanocomposite (PEDOT/RGO) modified electrode exhibited lowered electrochemical impedance and excellent electrocatalytic activity towards the oxidation of dopamine. Based on the excellent catalytic property of PEDOT/RGO, an electrochemical sensor capable of sensitive and selective detection of DA was developed. The fabricated sensor can detect DA in a wide linear range from 0.1 to 175μM, with a detection limit of 39nM, and it is free from common interferences such as uric acid and ascorbic acid.
authors.affiliation: Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
authors.forename: Wenting
authors.initials: W
authors.lastname: Wang
authors.affiliation: Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
authors.forename: Guiyun
authors.initials: G
authors.lastname: Xu
authors.affiliation: Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15260, United States.
authors.forename: Xinyan Tracy
authors.initials: XT
authors.lastname: Cui
authors.affiliation: Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
authors.forename: Ge
authors.initials: G
authors.lastname: Sheng
authors.affiliation: Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China. Electronic address: xiliangluo@hotmail.com.
authors.forename: Xiliang
authors.initials: X
authors.lastname: Luo
mesh_terms: D015374:Biosensing Techniques / Q000295:instrumentation*; D019086:Bridged Bicyclo Compounds, Heterocyclic / Q000737:chemistry*; D003217:Conductometry / Q000295:instrumentation*; D004298:Dopamine / Q000032:analysis* / Q000737:chemistry; D004553:Electric Conductivity; D004595:Electroplating / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006108:Graphite / Q000737:chemistry*; D008839:Microelectrodes; D053761:Nanocomposites / Q000737:chemistry* / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*
chemical_list: D019086:Bridged Bicyclo Compounds, Heterocyclic; D010087:Oxides; D011108:Polymers; C121383:poly(3,4-ethylene dioxythiophene); D006108:Graphite; D004298:Dopamine
keywords: Conducting polymer; Dopamine; Electrochemical reduction; Graphene oxide; Poly (3,4-ethylenedioxythiophene)