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Jiang L, Li C, Hou X. Smartphone-based dual inverse signal MOFs fluorescence sensing for intelligent on-site visual detection of malachite green. Talanta 2024; 274:126039. [PMID: 38604043 DOI: 10.1016/j.talanta.2024.126039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/20/2024] [Accepted: 04/02/2024] [Indexed: 04/13/2024]
Abstract
The development of intelligent, sensitive, and visual methods for the rapid detection of veterinary drug residues is essential to ensure food quality and safety. Here, a smartphone-based dual inverse signal MOFs fluorescence sensing system was proposed for intelligent in-site visual detection of malachite green (MG). A UiO-66-NH2@RhB-dual-emission fluorescent probe was successfully synthesized in one step using a simple one-pot method. The inner filter effect (IFE) quenches the red fluorescence, while hydrogen bonding interaction enhances the blue fluorescence, enabling highly sensitive, accurate, and visual detection of MG dual inverse signals through fluorescence analysis. The probe showed great linearity over a wide range of 0.1-100 μmol/L, with a limit of detection (LOD) of 20 nmol/L. By integrating smartphone photography and RGB (red, green, and blue) analysis, accurate quantitative analysis of MG in water and actual fish samples can be achieved within 5 min. This developed platform holds great promise for the on-site detection of MG in practical applications, with the advantages of simplicity, cost-effectiveness, and rapidity. Consequently, it may open up a new pathway for on-site evaluation of food safety and environmental health.
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Affiliation(s)
- Lianshuang Jiang
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Chenghui Li
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610064, China.
| | - Xiandeng Hou
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610064, China; Key Laboratory of Green Chemistry & Technology, Ministry of Education, and College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China.
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Li Y, Lu H, Xu S. The construction of dual-emissive ratiometric fluorescent probes based on fluorescent nanoparticles for the detection of metal ions and small molecules. Analyst 2024; 149:304-349. [PMID: 38051130 DOI: 10.1039/d3an01711g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
With the rapid development of fluorescent nanoparticles (FNPs), such as CDs, QDs, and MOFs, the construction of FNP-based probes has played a key role in improving chemical sensors. Ratiometric fluorescent probes exhibit distinct advantages, such as resistance to environmental interference and achieving visualization. Thus, FNP-based dual-emission ratiometric fluorescent probes (DRFPs) have rapidly developed in the field of metal ion and small molecule detection in the past few years. In this review, firstly we introduce the fluorescence sensing mechanisms; then, we focus on the strategies for the fabrication of DRFPs, including hybrid FNPs, single FNPs with intrinsic dual emission and target-induced new emission, and DRFPs based on auxiliary nanoparticles. In the section on hybrid FNPs, methods to assemble two types of FNPs, such as chemical bonding, electrostatic interaction, core satellite or core-shell structures, coordination, and encapsulation, are introduced. In the section on single FNPs with intrinsic dual emission, methods for the design of dual-emission CDs, QDs, and MOFs are discussed. Regarding target-induced new emission, sensitization, coordination, hydrogen bonding, and chemical reaction induced new emissions are discussed. Furthermore, in the section on DRFPs based on auxiliary nanoparticles, auxiliary nanomaterials with the inner filter effect and enzyme mimicking activity are discussed. Finally, the existing challenges and an outlook on the future of DRFP are presented. We sincerely hope that this review will contribute to the quick understanding and exploration of DRFPs by researchers.
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Affiliation(s)
- Yaxin Li
- School of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, China
- Laboratory of Functional Polymers, School of Materials Science and Engineering, Linyi University, Linyi 276005, China.
| | - Hongzhi Lu
- Laboratory of Functional Polymers, School of Materials Science and Engineering, Linyi University, Linyi 276005, China.
| | - Shoufang Xu
- Laboratory of Functional Polymers, School of Materials Science and Engineering, Linyi University, Linyi 276005, China.
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Wang XQ, Yang J, Zhang M, Wu D, Hu T, Yang J. Highly stable lanthanide(III) metal-organic frameworks as ratiometric fluorescence sensors for vitamin B 6. Dalton Trans 2023; 52:13387-13394. [PMID: 37676645 DOI: 10.1039/d3dt01900d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Three lanthanide(III)-based metal-organic frameworks, formulated as [(CH3)2NH2]2[Ln6(μ3-OH)8(EBTC)3(H2O)6]·4H2O·2DMF (Ln = Eu (1), Tb (2) and Ce (3)), were synthesized using a rigid tetracarboxylate organic ligand (1,1'-ethynebenzene-3,3',5,5'-tetracarboxylic acid, H4EBTC). Complexes 1-3 possess 12-connected hexanuclear [Ln6(μ3-OH)8(OOC-)12(H2O)6] clusters with the ftw topology, which were stable in water and acid/alkaline aqueous solution. Due to the antenna effect, complexes 1 and 2 presented double fluorescence emission peaks, which are the characteristic emission peaks of Ln3+ ions and the ligand H4EBTC, respectively. The doped bimetallic EuxTb1--x-MOFs were obtained by tuning the Eu(III)/Tb(III) ratio during the reaction, which exhibited a colour change from red, orange, and yellow to green. Furthermore, complexes 1, 2 and Eu2Tb8-MOF as ratiometric fluorescence sensors exhibited excellent sensing ability for vitamin B6 (VB6) in phosphate buffer solution (pH = 7.35) and real samples with high selectivity and reusability. The low detection limit (LOD) values were calculated to be 1.03 μM for complex 1, 0.25 μM for complex 2 and 0.11 μM for Eu2Tb8-MOF in aqueous solution. Finally, a visual film based on Ln-MOF@SA was prepared to detect VB6 with high reusability.
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Affiliation(s)
- Xiao-Qing Wang
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
- Shanxi Key Laboratory of advanced carbon based electrode materials, North University of China, Taiyuan 030051, China
| | - Jiandong Yang
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
| | - Man Zhang
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
| | - Dan Wu
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
| | - Tuoping Hu
- Department of Chemistry, College of Science, North University of China, Taiyuan 030051, China.
- Shanxi Key Laboratory of advanced carbon based electrode materials, North University of China, Taiyuan 030051, China
| | - Jie Yang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, and School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China.
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Wu S, Fang L, Li Y, Wang HB, Zhang H. A Fluorescence Turn On-off-on Method for Sensitive Detection of Sn 2+ and Glycine Using Waste Eggshell Membrane Derived Carbon Nanodots as Probe. J Fluoresc 2023; 33:1505-1513. [PMID: 36763295 DOI: 10.1007/s10895-022-03133-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/19/2022] [Indexed: 02/11/2023]
Abstract
Changes in Sn2+ and glycine levels are relevant to many important physiological procedures in human health. However, investigation of their physiological functions is limited because few versatile methods towards Sn2+ and glycine detection have been developed. In this work, a fluorescence turn on-off-on strategy was firstly constructed for rapid and sensitive detection of Sn2+ and glycine through the specific binding between Sn2+ and glycine. Carbon nanodots (CDs) with a quantum yield of 19.5% were synthesized by utilizing inner film of waste eggshell as carbon source and employed as fluorescent probe. In the presence of Sn2+, the fluorescence of CDs was quenched by Sn2+ via the primary inner filter effect (IFE). However, the binding between Sn2+ and glycine prevented the IFE between Sn2+ and CDs, resulting in fluorescence recovery of CDs. Under optimized conditions, the fluorescent response of CDs displayed good linear relationships with the concentrations of Sn2+ in the range of 10-200 µM and 200-5000 µM, and the limit of detection (LOD) was 2.4 µM. For glycine detection, a good linear relationship was obtained in the concentration range of 5-1000 µM with a low LOD down to 0.76 µM. Moreover, the practicability of the assay was also demonstrated by measuring glycine content in human serum samples. This work provides an economical, green and fast method for biological analysis of Sn2+ and glycine.
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Affiliation(s)
- Sifei Wu
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains, Henan Province Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Linxia Fang
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains, Henan Province Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, People's Republic of China.
| | - Yihan Li
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains, Henan Province Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains, Henan Province Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Hongding Zhang
- College of Chemistry and Chemical Engineering, Xinyang Key Laboratory of Functional Nanomaterials for Bioanalysis, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains, Henan Province Key Laboratory of Utilization of Non-Metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang, 464000, People's Republic of China.
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, 410082, People's Republic of China.
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