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Liu R, Li J, Zhong T, Long L. Graphene Modified Molecular Imprinting Electrochemical Sensor for Determining the Content of Dopamine. CURR ANAL CHEM 2019. [DOI: 10.2174/1573411014666180730112304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The unnatural levels of dopamine (DA) result in serious neurological disorders
such as Parkinson’s disease. Electrochemical methods which have the obvious advantages of
simple operation and low-cost instrumentation were widely used for determination of DA. In order to
improve the measurement performance of the electrochemical sensor, molecular imprinting technique
and graphene have always been employed to increase the selectivity and sensitivity.
Methods:
An electrochemical sensor which has specific selectivity to (DA) was proposed based on the
combination of a molecular imprinting polymer (MIP) with a graphene (GR) modified gold electrode.
The performance and effect of MIP film were investigated by differential pulse voltammetry (DPV)
and cyclic voltammetry (CV) in the solution of 5.0 ×10-3 mol/L K3[Fe(CN)6] and K4[Fe(CN)6] with
0.2 mol/L KCl at room temperature.
Results:
This fabricated sensor has well repeatability and stability, and was used to determine the dopamine
of urine. Under the optimized experiment conditions, the current response of the imprinted
sensor was linear to the concentration of dopamine in the range of 1.0×10-7 ~ 1.0×10-5 mol/L, the linear
equation was I (µA) = 7.9824+2.7210lgc (mol/L) with the detection limit of 3.3×10-8 mol/L.
Conclusion:
In this work, a highly efficient sensor for determination of DA was prepared with good
sensitivity by GR and great selectivity of high special recognization ability by molecular imprinting
membrane. This proposed sensor was used to determine the dopamine in human urine successfully.
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Affiliation(s)
- Rong Liu
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, College of Material and Chemical Engineering, Hunan City University, Yiyang, 413000, China
| | - Jie Li
- Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Tongsheng Zhong
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, College of Material and Chemical Engineering, Hunan City University, Yiyang, 413000, China
| | - Liping Long
- Hunan Provincial Key Lab of Dark Tea and Jin-hua, College of Material and Chemical Engineering, Hunan City University, Yiyang, 413000, China
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Topçu AA, Bereli N, Albayrak İ, Denizli A. Creatinine imprinted poly(hydroxyethyl methacrylate) based cryogel cartridges. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2017.1320756] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Aykut Arif Topçu
- Department of Biology, Kırıkkale University, Kırıkkale, Turkey
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Nilay Bereli
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - İrfan Albayrak
- Department of Biology, Kırıkkale University, Kırıkkale, Turkey
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, Ankara, Turkey
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Miura C, Li H, Matsunaga H, Haginaka J. Molecularly imprinted polymer for chlorogenic acid by modified precipitation polymerization and its application to extraction of chlorogenic acid from Eucommia ulmodies leaves. J Pharm Biomed Anal 2015; 114:139-44. [DOI: 10.1016/j.jpba.2015.04.038] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 04/23/2015] [Accepted: 04/24/2015] [Indexed: 11/29/2022]
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EL-Sharif HF, Stevenson D, Warriner K, Reddy SM. Hydrogel-Based Molecularly Imprinted Polymers for Biological Detection. ADVANCED SYNTHETIC MATERIALS IN DETECTION SCIENCE 2014. [DOI: 10.1039/9781849737074-00075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Molecularly imprinted polymers (MIPs) have become an important tool in the preparation of artificial and robust recognition materials that are capable of mimicking natural systems. MIPs have been regarded as 'antibody mimics' and have shown clear advantages over real antibodies for sensor technology. Currently, on-site diagnostic (OSD) and point-of-care (POC) biosensor development are heavily dominated by antibody-dependent immuno-sensors such as the lateral flow immuno-assay. Although antibodies exhibit a high degree of selectivity, any biological recognition element is inherently unstable with limited shelf-life, even when stored under optimum conditions. OSD and POC tests are essential for disease screening and treatment monitoring as part of emergency management. Introduced or naturally occurring pathogens can cause significant disruptions, raise panic in the population, and result in significant economic losses. Cheaper, smaller, and smarter devices for early detection of disease or environmental hazards ultimately lead to rapid containment and corrective action. To this end, there has been extensive research on detection platforms based on genetic or immune techniques. MIPs have proven to produce selective biological extractions that rival immunoaffinity-based separations, but without the tediously lengthy time-consuming process. MIPs could provide an alternative to antibodies, and ultimately lead to cheaper, smaller, and smarter biosensors.
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Affiliation(s)
- Hazim F. EL-Sharif
- Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey Guildford Surrey GU2 7XH UK
| | - Derek Stevenson
- Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey Guildford Surrey GU2 7XH UK
| | - Keith Warriner
- Department of Food Science, University of Guelph Guelph ON Canada N1G 2W1
| | - Subrayal M. Reddy
- Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey Guildford Surrey GU2 7XH UK
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Miura C, Funaya N, Matsunaga H, Haginaka J. Monodisperse, molecularly imprinted polymers for creatinine by modified precipitation polymerization and their applications to creatinine assays for human serum and urine. J Pharm Biomed Anal 2013; 85:288-94. [DOI: 10.1016/j.jpba.2013.07.038] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 07/27/2013] [Accepted: 07/29/2013] [Indexed: 11/26/2022]
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Yang M, Zhang Y, Lin S, Yang X, Fan Z, Yang L, Dong X. Preparation of a bifunctional pyrazosulfuron-ethyl imprinted polymer with hydrophilic external layers by reversible addition–fragmentation chain transfer polymerization and its application in the sulfonylurea residue analysis. Talanta 2013; 114:143-51. [DOI: 10.1016/j.talanta.2013.03.078] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 03/24/2013] [Accepted: 03/28/2013] [Indexed: 11/28/2022]
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