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Tang FK, Chen Y, Nnaemaka Tritton D, Cai Z, Cham-Fai Leung K. A Piperazine Linked Rhodamine-BODIPY FRET-based Fluorescent Sensor for Highly Selective Pd 2+ and Biothiol Detection. Chem Asian J 2023; 18:e202300477. [PMID: 37390079 DOI: 10.1002/asia.202300477] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/27/2023] [Accepted: 06/30/2023] [Indexed: 07/02/2023]
Abstract
A class of rhodamine-based fluorescent sensors for the selective and sensitive detection of Pd2+ metal ions in aqueous media has been developed. A rhodamine-based sensor PMS and a rhodamine-BODIPY Förster resonance energy transfer (FRET)-pair sensor PRS have been incorporated with a piperazine linker and an O-N-S-N podand ligand for specific recognition of Pd2+ ion. Both probes displayed colorimetric and fluorescent ratiometric changes when exposed to Pd2+ , due to their spirolactam rings opening and restoring rhodamine conjugation. PRS is highly selective to Pd2+ over 22 other metal ions, showing a 0.6-fold ratiometric difference at I600nm /I515nm . Additionally, the lactam ring in Pd2+ coordinated PRS-Pd could be switched back to the closed form in the presence of various thiols, providing a "red-green traffic light" detection mechanism between red and green emission. Furthermore, PRS showed excellent cell viability and was successfully employed to image Pd2+ and the PRS-Pd complex ensemble could interchangeably detect biothiols including glutathione (GSH) in A549 human lung cancer cells.
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Affiliation(s)
- Fung-Kit Tang
- Department of Chemistry and State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Kowloon, Hong Kong SAR, P. R. China
| | - Yanyan Chen
- Department of Chemistry and State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Kowloon, Hong Kong SAR, P. R. China
| | - Daniel Nnaemaka Tritton
- Department of Chemistry and State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Kowloon, Hong Kong SAR, P. R. China
| | - Zongwei Cai
- Department of Chemistry and State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Kowloon, Hong Kong SAR, P. R. China
| | - Ken Cham-Fai Leung
- Department of Chemistry and State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, 224 Waterloo Road, Kowloon Tong, Kowloon, Hong Kong SAR, P. R. China
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Zhang R, Zhang L, Yu R, Wang C. Rapid and sensitive detection of methyl parathion in rice based on carbon quantum dots nano-fluorescence probe and inner filter effect. Food Chem 2023; 413:135679. [PMID: 36796262 DOI: 10.1016/j.foodchem.2023.135679] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 02/02/2023] [Accepted: 02/09/2023] [Indexed: 02/13/2023]
Abstract
A highly sensitive fluorescent sensing system of novel carbon quantum dots nano-fluorescent probe based on corn stalks was established for the determination of methyl parathion by alkaline catalytic hydrolysis and inner filter effect mechanism. The carbon quantum dots nano-fluorescent probe was prepared from corn stalks using an optimized one-step hydrothermal method. The detection mechanism of methyl parathion was revealed. The reaction conditions were optimized. The linear range, sensitivity and selectivity of the method were evaluated. Under the optimal conditions, the carbon quantum dots nano-fluorescent probe exhibited high selectivity and sensitivity to methyl parathion, achieving a linear range of 0.005-14 µg/mL. The fluorescence sensing platform was applied to the detection of methyl parathion in rice samples, and the results showed that the recoveries range from 91.64 to 104.28 %, and the relative standard deviations were less than 4.17 %. The detection limit for methyl parathion in rice samples was 1.22 µg/kg, and the limit of quantitation (LOQ) was 4.07 µg/kg, which was very satisfactory.
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Affiliation(s)
- Ruiting Zhang
- College of Food Science, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, China
| | - Liyuan Zhang
- College of Food Science, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, China.
| | - Runzhong Yu
- College of Information and Electrical Engineering, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, China.
| | - Changyuan Wang
- College of Food Science, Heilongjiang Bayi Agricultural University, 5 Xinfeng Road, Daqing 163319, China; Key Laboratory of Agro-products Processing and Quality Safety of Heilongjiang Province, Daqing 163319, China
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Xie W, Liu J, Qu Y, Du F. Construction of a ratiometric fluorescent sensing platform based on near-infrared carbon dots for organophosphorus pesticides detection. ANAL SCI 2023:10.1007/s44211-023-00319-3. [PMID: 36944823 DOI: 10.1007/s44211-023-00319-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 03/04/2023] [Indexed: 03/23/2023]
Abstract
In this work, a convenient ratiometric fluorescent platform was designed to measure organophosphorus pesticides (OPs) based on acetylcholinesterase (AChE), acetylthiocholine (ATCh), manganese dioxide nanosheets (MnO2), near-infrared carbon dots (RCDs) and o-phenylenediamine (OPD). In this platform, a direct oxidation of OPD by MnO2 generated the luminescent product 2,3-diaminophenolazine (DAP) through intrinsic oxidase activity, while RCDs served as a fluorescent reference indicator. In the presence of AChE and ATCh, the enzymatic hydrolysate thiocholine (TCh) would reduce MnO2 nanosheets to Mn2+, leading to the quenching of DAP fluorescence. On the other hand, OPs can inhibit the catabolism of ATCh by AChE thus acting as a recognizer of OPs. According to these reactions, OPs were quantitatively analyzed by the intensity ratio of fluorescence emitted from RCDs and DAP (F560/F676). The constructed platform can detect OPs with the range of 0.2-0.6 μM with a detection limit of 4.3 nM. Figure A ratiometric fluorescent probe based on carbon dots was obtained and using it to determine the concentration of organophosphorus pesticides.
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Affiliation(s)
- Wenfei Xie
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Applied Analytical Chemistry (Guangxi Minzu University), Education Department of Guangxi Zhuang Autonomous Region, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, 530006, China
| | - Jinrui Liu
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Applied Analytical Chemistry (Guangxi Minzu University), Education Department of Guangxi Zhuang Autonomous Region, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, 530006, China
| | - Yunting Qu
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Applied Analytical Chemistry (Guangxi Minzu University), Education Department of Guangxi Zhuang Autonomous Region, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, 530006, China
| | - Fangkai Du
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Key Laboratory of Applied Analytical Chemistry (Guangxi Minzu University), Education Department of Guangxi Zhuang Autonomous Region, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning, 530006, China.
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Zhang Y, Liu B, Liu Z, Li J. Research progress in synthesis and biological application of quantum dots. NEW J CHEM 2022. [DOI: 10.1039/d2nj02603a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quantum dots are an excellent choice for biomedical applications due to their special optical properties and quantum confinement effects. This paper reviews the research and application progress of several quantum...
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