title: Highly selective and sensitive determination of dopamine by the novel molecularly imprinted poly(nicotinamide)/CuO nanoparticles modified electrode.
abstract: A novel electrochemical sensor was proposed for the determination of dopamine (DA) based on the molecularly imprinted electropolymers (MIPs)/copper oxide (CuO) nanoparticles modified electrode. MIPs were firstly prepared by using nicotinamide as an environment-friendly monomer to selectively recognize the template molecules. CuO nanoparticles were used to enhance the number of imprinted sites per unit surface area of the electrode and then improve the selectivity and sensitivity of the electrochemical sensor. Thus, the obtained electrochemical sensor could effectively minimize the interferences caused by ascorbic acid (AA), uric acid (UA) and sample matrix. The linear range for the detection of DA was changed from 0.02 μmol L(-1) to 25 μmol L(-1) with the detection limit of 8 nmol L(-1) (S/N=3), which was lower than those of the reported MIPs-based sensor. Finally, the proposed method was applied to measure dopamine in serum samples. The spiked recoveries were changed from 96.9% to 105.9% and the RSD was not higher than 8.8%. It was shown that the proposed sensor exhibited significant promise as a reliable technique for the detection of DA in human serum samples.
authors.affiliation: Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan 430030, Hubei, China.
authors.forename: Bingbing
authors.initials: B
authors.lastname: Li
authors.affiliation: Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan 430030, Hubei, China.
authors.forename: Yusun
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan 430030, Hubei, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wu
authors.affiliation: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Min
authors.initials: M
authors.lastname: Liu
authors.affiliation: Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan 430030, Hubei, China.
authors.forename: Surong
authors.initials: S
authors.lastname: Mei
authors.affiliation: Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan 430030, Hubei, China.
authors.forename: Yikai
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan 430030, Hubei, China. Electronic address: jingtao@hust.edu.cn.
authors.forename: Tao
authors.initials: T
authors.lastname: Jing
mesh_terms: D015374:Biosensing Techniques; D003300:Copper / Q000737:chemistry; D004298:Dopamine / Q000097:blood / Q000737:chemistry / Q000302:isolation & purification*; D055664:Electrochemical Techniques; D006046:Gold / Q000737:chemistry; D006801:Humans; D054802:Molecular Imprinting; D053758:Nanoparticles / Q000737:chemistry*; D009536:Niacinamide / Q000737:chemistry; D011108:Polymers
chemical_list: D011108:Polymers; D009536:Niacinamide; D006046:Gold; D003300:Copper; C030973:cupric oxide; D004298:Dopamine
keywords: CuO nanoparticles; Dopamine; Electrochemical sensor; Electropolymerization; Molecularly imprinted polymers