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Liu QS, Yang ZH, Wang ZL, Sun Y, Chen LL, Sun L, Sun XB, Gu W. A novel dehydroabietic acid-based AIE-active fluorescent probe for rapid detection of Hg2+ and its environmental and biological applications. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113597] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Fan P, He S, Cheng J, Hu C, Liu C, Yang S, Liu J. l-Cysteine modified silver nanoparticles-based colorimetric sensing for the sensitive determination of Hg 2+ in aqueous solutions. LUMINESCENCE 2020; 36:698-704. [PMID: 33270343 DOI: 10.1002/bio.3990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/22/2020] [Accepted: 11/29/2020] [Indexed: 12/28/2022]
Abstract
A simple and sensitive colorimetric sensing method was constructed for detection of Hg2+ in aqueous solutions and based on silver nanoparticles functionalized with l-cysteine (l-Cys-Ag NPs). In this method, adenosine triphosphate (ATP) induced aggregation of l-Cys-Ag NPs. Simultaneously, the solution colour changed from bright yellow to brown. In the presence of Hg2+ , Hg2+ chelated ATP to form a complex and reduce the degree of aggregation of l-Cys-Ag NPs and was accompanied by a colour change from brown to bright yellow. The changing values of absorbance at 390 nm were linearly correlated with concentration of Hg2+ over the 4.00 × 10-8 to 1.04 × 10-6 mol·L-1 range, with a detection limit of 8 nM. This method was used successfully for detection of Hg2+ in real water samples and performed good selectivity and sensitivity. The recovery range was 91.5-109.1%, indicating that the method has vast application potential for determination of Hg2+ in the environment.
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Affiliation(s)
- Pengfei Fan
- College of Public Health, University of South China, Hengyang, People's Republic of China.,Key Laboratory of Hengyang for Health Hazard Factors Inspection and Quarantine, Hengyang, People's Republic of China
| | - Shunzhen He
- College of Public Health, University of South China, Hengyang, People's Republic of China.,Jinnan Center for Disease Control And Prevention, Tianjin, China
| | - Jianlin Cheng
- College of Public Health, University of South China, Hengyang, People's Republic of China.,Key Laboratory of Hengyang for Health Hazard Factors Inspection and Quarantine, Hengyang, People's Republic of China
| | - Congcong Hu
- College of Public Health, University of South China, Hengyang, People's Republic of China.,Key Laboratory of Hengyang for Health Hazard Factors Inspection and Quarantine, Hengyang, People's Republic of China
| | - Can Liu
- College of Public Health, University of South China, Hengyang, People's Republic of China.,Key Laboratory of Hengyang for Health Hazard Factors Inspection and Quarantine, Hengyang, People's Republic of China
| | - Shengyuan Yang
- College of Public Health, University of South China, Hengyang, People's Republic of China.,Key Laboratory of Hengyang for Health Hazard Factors Inspection and Quarantine, Hengyang, People's Republic of China
| | - Jinquan Liu
- College of Public Health, University of South China, Hengyang, People's Republic of China.,Key Laboratory of Hengyang for Health Hazard Factors Inspection and Quarantine, Hengyang, People's Republic of China
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Wei J, Hao D, Wei L, Zhang A, Sun C, Wang R. One-step preparation of red-emitting carbon dots for visual and quantitative detection of copper ions. LUMINESCENCE 2020; 36:472-480. [PMID: 33068054 DOI: 10.1002/bio.3966] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/07/2020] [Accepted: 10/12/2020] [Indexed: 12/26/2022]
Abstract
A one-step solvothermal method for the preparation of carbon dots with red fluorescence (R-CDs) was put forward, in which sodium citrate and formamide were chosen as precursors, while formamide was adopted as the solvent. The fluorescence emission peak of the as-prepared R-CDs remained the same (600 nm) when the excitation wavelength increased from 490 nm to 560 nm, and the fluorescence quantum yield is 35.3%. Furthermore, the fluorescence intensity of the as-prepared R-CDs could be selectively quenched by copper ions, and the mechanism of Cu2+ quenching R-CDs is the combination of static and dynamic quenching. As a result, the R-CDs were applied for the construction of a fluorescent sensor without any modification for the quantitative and visual detection of copper ions, which is a typical contaminant in water. The limit of detection for the fluorescent sensor was as low as 5 nmol/L, and it can be used to fast and directly confirm whether the content of copper ions in drinking water meets the criteria of the United States Environmental Protection Agency and the World Health Organization.
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Affiliation(s)
- Jianfei Wei
- School of Materials Design and Engineering, Beijing Institute of Fashion Technology, No. A2, East Yinghua Street, Beijing, Chaoyang District, China.,Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nano Fiber, Beijing Institute of Fashion Technology, Beijing, China
| | - Dan Hao
- School of Materials Design and Engineering, Beijing Institute of Fashion Technology, No. A2, East Yinghua Street, Beijing, Chaoyang District, China
| | - Lifei Wei
- School of Materials Design and Engineering, Beijing Institute of Fashion Technology, No. A2, East Yinghua Street, Beijing, Chaoyang District, China.,Polymer Research Institute, Sichuan University, No.24, South Section, First Ring Road, Chengdu, China
| | - Anying Zhang
- School of Materials Design and Engineering, Beijing Institute of Fashion Technology, No. A2, East Yinghua Street, Beijing, Chaoyang District, China.,School of Material Science and Engineering, Tiangong University, No. 399 BinShuiXi Road, Xiqing District, Tianjin, China
| | - Chenying Sun
- School of Materials Design and Engineering, Beijing Institute of Fashion Technology, No. A2, East Yinghua Street, Beijing, Chaoyang District, China
| | - Rui Wang
- School of Materials Design and Engineering, Beijing Institute of Fashion Technology, No. A2, East Yinghua Street, Beijing, Chaoyang District, China.,Beijing Key Laboratory of Clothing Materials R&D and Assessment, Beijing Engineering Research Center of Textile Nano Fiber, Beijing Institute of Fashion Technology, Beijing, China
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Zhong W, Wang L, Qin D, Zhou J, Duan H. Two Novel Fluorescent Probes as Systematic Sensors for Multiple Metal Ions: Focus on Detection of Hg 2. ACS OMEGA 2020; 5:24285-24295. [PMID: 33015445 PMCID: PMC7528189 DOI: 10.1021/acsomega.0c02481] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/20/2020] [Indexed: 06/11/2023]
Abstract
Many precedents prove that fluorescent probes are promising candidates for detection of metal ions in the environment and biological systems. Herein, two novel photoinduced electron transfer (PET)-based fluorescent probes, CH 3 -R6G and CN-R6G, were rationally synthesized by incorporating a triazolyl benzaldehyde moiety into the rhodamine 6G fluorophore. The optical properties of these probes were studied using an ultraviolet-visible (UV-vis) absorption spectrophotometer and a fluorescence spectrophotometer. Through the analysis of the test results, it is concluded that the selectivity and sensitivity of these two probes to Hg2+ are better than to other metal ions (Ag+, Al3+, Ba2+, Cd2+, Co3+, Cu2+, Cr3+, Fe3+, Ga2+, K+, Mg2+, Na+, Ni2+, Pb2+, and Zn2+). According to the standard curve diagram, the detection limits of CH 3 -R6G and CN-R6G were determined to be 1.34 × 10-8 and 1.56 × 10-8 M, respectively. Reaction of the probes with Hg2+ resulted in a color change of the solution from colorless to pink. The corresponding molecular geometric configuration, orbital electron distribution, and orbital energy of these two compounds were predicted by density functional theory (DFT). The two probes CH 3 -R6G and CN-R6G have been successfully used for imaging Hg2+ in live breast cancer cells, thereby indicating their great potential for the micro-detection of Hg2+ in vivo.
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Affiliation(s)
- Wenxia Zhong
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250353, Shandong, China
| | - Lizhen Wang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250014, Shandong, China
| | - Dawei Qin
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250353, Shandong, China
| | - Jianhua Zhou
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250353, Shandong, China
| | - Hongdong Duan
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan 250353, Shandong, China
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