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Qin X, Yin P, Zhang Y, Su M, Chen F, Xu X, Zhao J, Gui Y, Guo H, Zhao C, Zhang Z. Self-assembled ordered AuNRs-modified electrodes for simultaneous determination of dopamine and topotecan with improved data reproducibility. Mikrochim Acta 2024; 191:350. [PMID: 38806865 DOI: 10.1007/s00604-024-06441-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 05/15/2024] [Indexed: 05/30/2024]
Abstract
Gold nanomaterials have been widely explored in electrochemical sensors due to their high catalytic property and good stability in multi-medium. In this paper, the reproducibility of the signal among batches of gold nanorods (AuNRs)-modified electrodes was investigated to improve the data stabilization and repeatability. Ordered and random self-assembled AuNRs-modified electrodes were used as electrochemical sensors for the simultaneous determination of dopamine (DA) and topotecan (TPC), with the aim of obtaining an improved signal stability in batches of electrodes and realizing the simultaneous determination of both substances. The morphology and structure of the assemblies were analyzed and characterized by UV-Vis spectra, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray powder diffraction (XRD). Electrochemical studies showed that the ordered AuNRs/ITO electrodes have excellent signal reproducibility among several individuals due to the homogeneous mass transfer in the ordered arrangement of the AuNRs. Under the optimized conditions, the simultaneous detection results of DA and TPC showed good linearity in the ranges 1.75-45 μM and 1.5-40 μM, and the detection limits of DA and TPC were 0.06 μM and 0.17 μM, respectively. The results showed that the prepared ordered AuNR/ITO electrode had high sensitivity, long-term stability, and reproducibility for the simultaneous determination of DA and TPC, and it was expected to be applicable for real sample testing.
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Affiliation(s)
- Xiaoyun Qin
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Peijun Yin
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Yuhang Zhang
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Mingxing Su
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Fenghua Chen
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Xinru Xu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Jianbo Zhao
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Yanghai Gui
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Huishi Guo
- School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450000, China
| | - Chao Zhao
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China
| | - Zhen Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China.
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Xue Y, Li H, Wang X, Xuan X, Li M. Preparation of self-supporting vertically/horizontally grown graphene microelectrodes for neurotransmitter determination. Anal Chim Acta 2023; 1269:341414. [PMID: 37290853 DOI: 10.1016/j.aca.2023.341414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 04/22/2023] [Accepted: 05/22/2023] [Indexed: 06/10/2023]
Abstract
The development of microelectrodes for the rapid in situ detection of neurotransmitters and their metabolic levels in human biofluids has considerable significance in biomedical research. In this study, self-supported graphene microelectrodes with B-doped, N-doped, and B- and N-co-doped vertical graphene (BVG, NVG, and BNVG, respectively) nanosheets grown on horizontal graphene (HG) were fabricated for the first time. The high electrochemical catalytic activity of BVG/HG on monoamine compounds was explored by investigating the influence of B and N atoms and the VG layer thickness on the response current of neurotransmitters. Quantitative analysis using the BVG/HG electrode in a blood-like environment with pH 7.4 indicated that the linear concentration ranges were 1-400 and 1-350 μM for dopamine (DA) and serotonin (5-HT), with limits of detection (LODs) of 0.271 and 0.361 μM, respectively. For tryptophan (Trp), the sensor measured a wide linear concentration range of 3-1500 μM over a wide pH range of 5.0-9.0, with the LOD fluctuating between 0.58 and 1.04 μM. Furthermore, the BVG/HG microelectrodes could be developed as needle- and pen-type sensors for the detection of DA, 5-HT, and Trp in human blood and gastrointestinal secretion samples.
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Affiliation(s)
- Yujie Xue
- Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, 300384, PR China
| | - Hongji Li
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, PR China.
| | - Xiaoyan Wang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, PR China
| | - Xiuwei Xuan
- Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, 300384, PR China
| | - Mingji Li
- Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin, 300384, PR China.
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Xue S, Shi M, Wang J, Li J, Peng G, Xu J, Gao Y, Duan X, Lu L. TiO2-MXene/PEDOT:PSS Composite as a Novel Electrochemical Sensing Platform for Sensitive Detection of Baicalein. Molecules 2023; 28:molecules28073262. [PMID: 37050025 PMCID: PMC10096780 DOI: 10.3390/molecules28073262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/01/2023] [Accepted: 04/03/2023] [Indexed: 04/09/2023] Open
Abstract
In this work, TiO2-MXene/poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) composite was utilized as an electrode material for the sensitive electrochemical detection of baicalein. The in-situ growth of TiO2 nanoparticles on the surface of MXene nanosheets can effectively prevent their aggregation, thus presenting a significantly large specific surface area and abundant active sites. However, the partial oxidation of MXene after calcination could reduce its conductivity. To address this issue, herein, PEDOT:PSS films were introduced to disperse the TiO2-MXene materials. The uniform and dense films of PEDOT:PSS not only improved the conductivity and dispersion of TiO2-MXene but also enhanced its stability and electrocatalytic activity. With the advantages of a composite material, TiO2-MXene/PEDOT:PSS as an electrode material demonstrated excellent electrochemical sensing ability for baicalein determination, with a wide linear response ranging from 0.007 to 10.0 μM and a lower limit of detection of 2.33 nM. Furthermore, the prepared sensor displayed good repeatability, reproducibility, stability and selectivity, and presented satisfactory results for the determination of baicalein in human urine sample analysis.
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Affiliation(s)
- Shuya Xue
- Flexible Electronics Innovation Institute (FEII), Jiangxi Science and Technology Normal University, Nanchang 330013, China
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Min Shi
- Flexible Electronics Innovation Institute (FEII), Jiangxi Science and Technology Normal University, Nanchang 330013, China
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Jinye Wang
- Shandong Liaocheng Ecological Environment Monitoring Center, Liaocheng 252000, China
| | - Jiapeng Li
- Flexible Electronics Innovation Institute (FEII), Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Guanwei Peng
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Jingkun Xu
- Flexible Electronics Innovation Institute (FEII), Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Yansha Gao
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
| | - Xuemin Duan
- Flexible Electronics Innovation Institute (FEII), Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Limin Lu
- Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang 330045, China
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Rizalputri LN, Anshori I, Handayani M, Gumilar G, Septiani NLW, Hartati YW, Annas MS, Purwidyantri A, Prabowo BA, Yuliarto B. Facile and controllable synthesis of monodisperse gold nanoparticle bipyramid for electrochemical dopamine sensor. NANOTECHNOLOGY 2022; 34:055502. [PMID: 36301678 DOI: 10.1088/1361-6528/ac9d3f] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
We demonstrated potential features of gold nanoparticle bipyramid (AuNB) for an electrochemical biosensor. The facile synthesis method and controllable shape and size of the AuNB are achieved through the optimization of cetyltrimethylammonium chloride (CTAC) surfactant over citric acid (CA) ratio determining the control of typically spherical Au seed size and its transition into a penta-twinned crystal structure. We observe that the optimized ratio of CTAC and CA facilitates flocculation control in which Au seeds with size as tiny as ∼14.8 nm could be attained and finally transformed into AuNB structures with an average length of ∼55 nm with high reproducibility. To improve the electrochemical sensing performance of a screen-printed carbon electrode, surface modification with AuNB via distinctive linking procedures effectively enhanced the electroactive surface area by 40%. Carried out for the detection of dopamine, a neurotransmitter frequently linked to the risk of Parkinson's, Alzheimer's, and Huntington's diseases, the AuNB decorated-carbon electrode shows outstanding electrocatalytic activity that improves sensing performance, including high sensitivity, low detection limit, wide dynamic range, high selectivity against different analytes, such as ascorbic acid, uric acid and urea, and excellent reproducibility.
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Affiliation(s)
- Lavita Nuraviana Rizalputri
- Department of Nanotechnology, Graduate School, Bandung Institute of Technology, Bandung, Indonesia
- Research Center for Nanoscience and Nanotechnology (RCNN), Bandung Institute of Technology, Bandung, Indonesia
| | - Isa Anshori
- Research Center for Nanoscience and Nanotechnology (RCNN), Bandung Institute of Technology, Bandung, Indonesia
- Department of Biomedical Engineering, Bandung Institute of Technology, Bandung, Indonesia
| | - Murni Handayani
- Research Center for Advanced Materials, National Research and Innovation Agency (BRIN), Tangerang Selatan, Indonesia
| | - Gilang Gumilar
- Research Center for Nanoscience and Nanotechnology (RCNN), Bandung Institute of Technology, Bandung, Indonesia
- Advanced Functional Materials Laboratory, Engineering Physics Department, Bandung Institute of Technology, Bandung, Indonesia
| | - Ni Luh Wulan Septiani
- Research Center for Advanced Materials, National Research and Innovation Agency (BRIN), Tangerang Selatan, Indonesia
| | - Yeni Wahyuni Hartati
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Sumedang, Indonesia
- Research Center of Molecular Biotechnology and Bioinformatics, Universitas Padjadjaran, Bandung, Indonesia
| | | | - Agnes Purwidyantri
- School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast, United Kingdom
| | - Briliant Adhi Prabowo
- Research Center for Electronics, National Research and Innovation Agency (BRIN), Bandung, Indonesia
- International Iberian Nanotechnology Laboratory, Braga, Portugal
| | - Brian Yuliarto
- Research Center for Nanoscience and Nanotechnology (RCNN), Bandung Institute of Technology, Bandung, Indonesia
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Zhang Y, Zhang L, Li C, Han J, Huang W, Zhou J, Yang Y. Hydrophilic antifouling 3D porous MXene/holey graphene nanocomposites for electrochemical determination of dopamine. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107713] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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