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Xiao W, Zhang Q, You DH, Li NB, Zhou GM, Luo HQ. Construction of a novel flavonol fluorescent probe for copper (II) ion detection and its application in actual samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 314:124175. [PMID: 38565051 DOI: 10.1016/j.saa.2024.124175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 03/12/2024] [Accepted: 03/17/2024] [Indexed: 04/04/2024]
Abstract
Copper is an essential trace element in the human body, and its level is directly related to many diseases. While the source of copper in human body is mainly intake from food, then the detection of copper ions (Cu2+) in food becomes crucial. Here, we synthesized a novel probe (E)-3-hydroxy-2-styryl-4H-benzo[h]chromen-4-one (NSHF) and explored the binding ability of NSHF for Cu2+ using nuclear magnetic resonance hydrogen spectroscopy (1H NMR), high-resolution mass spectrometry (HRMS), Job's plot method and density functional theory (DFT). NSHF shows the advantages of fast response time, good selectivity and high sensitivity for Cu2+. The fluorescence intensity ratio (F/F0) of NSHF shows a good linear relationship with the concentration of Cu2+ and the detection limit is 0.061 μM. NSHF was successfully applied to the detection of Cu2+ in real samples. In addition, a simple and convenient Cu2+ detection platform was constructed by combining NSHF with a smartphone and a UV lamp, which can realize the rapid detection of Cu2+. This work provides an effective tool for the real-time detection of Cu2+.
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Affiliation(s)
- Wei Xiao
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Qing Zhang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Dong Hui You
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Guang Ming Zhou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China.
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Chen X, Huang H, Wu Q, Xue F, Zhao Z, Liu J, Duan H, Chen H. Triggering "signal-on" photoelectrochemical responses by heterojunction transition for selective detection of copper(II) based on Pd/MoS 2@g-C 3N 4 nanocomposites. Anal Chim Acta 2023; 1283:341940. [PMID: 37977776 DOI: 10.1016/j.aca.2023.341940] [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: 07/09/2023] [Revised: 09/29/2023] [Accepted: 10/20/2023] [Indexed: 11/19/2023]
Abstract
Controlling the concentration of copper(II) in aquatic systems is of importance for human health. Numerous traditional technologies to detect Cu2+ may encounter with limitations, such as high signal background and complicated operation. Herein, a highly selective photoelectrochemical (PEC) sensor is proposed for the "signal-on" detection of Cu2+ employing g-C3N4 nanosheets with MoS2 and Pd quantum dots deposited (Pd/MoS2@g-C3N4). Pd/MoS2@g-C3N4 could present the enhanced photocurrents of specific responses to Cu2+ under light irradiation. MoS2 quantum dots on the sensor are agglomerated into MoS2 bulk during sensing Cu2+, forming an efficient Z-scheme heterojunction. The heterojunction transition induced photoelectrons transferring from the bulk MoS2 to g-C3N4, resulting in "signal-on" PEC responses. Such Z-scheme heterojunction has conquered the traditional heterojunction towards "signal-on" mechanism, that was further verified by band structure measurements and DMPO spin trapping ESR analysis. Photocurrent intensities increased gradually with the addition of incremental Cu2+ concentrations, achieving a detection limit of 0.21 μM and a broad linear interval range from 1 μM to 1 mM with high selectivity and stability. This work may open a new door towards the in situ construction of g-C3N4-based Z-scheme heterojunctions for the signal-on PEC sensing platform, providing wide applications in environmental monitoring and food safety.
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Affiliation(s)
- Xi Chen
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China
| | - Haicai Huang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China
| | - Qingping Wu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China
| | - Fei Xue
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China
| | - Ziming Zhao
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China
| | - Jingqiu Liu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China
| | - Haoyu Duan
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China
| | - Houyang Chen
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, China.
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Qi H, Zhang T, Jing C, Zhang Z, Chen Y, Chen Y, Deng Q, Wang S. Metal-organic gel as a fluorescence sensing platform to trace copper(II). ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 14:52-57. [PMID: 34889920 DOI: 10.1039/d1ay01716k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Metal-organic gel (MOG), as a novel type of metallic organic hybrid material, exhibits diverse properties. However, its application in fluorescence detection for specific metal ions has rarely been exploited. In this work, we have designed and synthesized a MOG based on Al-carboxylate coordination assemblies (denoted as MOG-Al). The resultant MOG-Al shows good specific fluorescence signal response to trace Cu2+. Under optimal conditions, the fluorescence quenching degrees (F0 - F) of the MOG-Al have a linear correlation with Cu2+ concentration ranging from 0.05 to 100 μM, and the limit of detection (LOD) is 45.00 nM. The proposed sensing platform was also applied for the detection of Cu2+ in real samples. Satisfactory recoveries (92-116%) for Cu2+ in rice, soybean milk powder and pork liver were obtained. These results indicate that MOG-Al is a promising material for the specific and sensitive sensing of Cu2+.
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Affiliation(s)
- Hao Qi
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education of China, School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Tianli Zhang
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education of China, School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Chuang Jing
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education of China, School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Zhen Zhang
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education of China, School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Yujie Chen
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education of China, School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Yali Chen
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education of China, School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Qiliang Deng
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education of China, School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Shuo Wang
- Key Laboratory of Marine Resource Chemistry and Food Technology (TUST), Ministry of Education of China, School of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin 300457, China.
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China.
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Nishihara R, Kurita R. Mix-and-read bioluminescent copper detection platform using a caged coelenterazine analogue. Analyst 2021; 146:6139-6144. [PMID: 34486602 DOI: 10.1039/d1an01292d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Serum copper levels are biomarkers for copper-related diseases. Quantification of levels of free copper (not bound to proteins) in serum is important for diagnosing Wilson's disease, in which the free copper concentration is elevated. Bioluminescence is commonly used in point-of-care diagnostics, but these assays require genetically engineered luciferase. Here, we developed a luciferase-independent copper detection platform. A luminogenic caged coelenterazine analogue (TPA-H1) was designed and synthesized to detect copper ions in human serum. TPA-H1 was developed by introducing a tris[(2-pyridyl)-methyl]amine (TPA) ligand, which is a Cu+ cleavable caging group, to the carbonyl group at the C-3 position of the imidazopyrazinone scaffold. The luciferin, named HuLumino1, is the product of the cleavage reaction of TPA-H1 with a copper ion and displays "turn-on" bioluminescence signals specifically with human serum albumin, which can be used to quantitatively analyse copper ions. TPA-H1 exhibited a fast cleavage of the protective group, high specificity, and high sensitivity for copper over other metal ions. This novel caged coelenterazine derivative, TPA-H1, can detect free copper ions in serum in a simple "mix-and-read" manner.
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Affiliation(s)
- Ryo Nishihara
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan. .,DAILAB, DBT-AIST International Centre for Translational and Environmental Research (DAICENTER), National Institute of Advanced Industrial Science and Technology (AIST), Central 5-41, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.,Japan Science and Technology Agency (JST), PRESTO, 4-1-8, Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Ryoji Kurita
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan. .,DAILAB, DBT-AIST International Centre for Translational and Environmental Research (DAICENTER), National Institute of Advanced Industrial Science and Technology (AIST), Central 5-41, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan.,Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
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