1
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Ren X, Tian Z, Gao X, Ai Y, Li M, Zhang B, Zou G. Finely-Tuning Chemiluminescent Color of CdTe Nanocrystals and Its Application for Near-Infrared Semi-Automatic Immunoassay. Anal Chem 2024; 96:7643-7650. [PMID: 38708712 DOI: 10.1021/acs.analchem.4c00549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
Chemiluminescence (CL), especially commercialized CL immunoassay (CLIA), is normally performed within the eye-visible region of the spectrum by exploiting the electronic-transition-related emission of the molecule luminophore. Herein, dual-stabilizers-capped CdTe nanocrystals (NCs) is employed as a model of nanoparticulated luminophore to finely tune the CL color with superior color purity. Initialized by oxidizing the CdTe NCs with potassium periodate (KIO4), intermediates of the reactive oxygen species (ROS) tend to charge CdTe NCs in both series-connection and parallel-connection routes and dominate the charge-transfer CL of CdTe NCs. The CdTe NCs/KIO4 system can exhibit color-tunable CL with the maximum emission wavelength shifted from 694 nm to 801 nm, and the red-shift span is over 100 nm. Both PL and CL of each of the CdTe NCs are bandgap-engineered; the change in the NCs surface state via CL reaction enables CL of each of the CdTe NCs to be red-shifted for ∼20 nm to PL, while the change in the NCs surface state via labeling CdTe NCs to secondary-antibody (Ab2) enables CL of the CdTe NCs-Ab2 conjugates to be red-shifted for another ∼20 nm to bare CdTe NCs. The CL of CdTe753-Ab2/KIO4 is ∼791 nm, which can perform near-infrared CL immunoassay and semi-automatically determined procalcitonin (PCT) on commercialized in vitro diagnosis (IVD) instruments.
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Affiliation(s)
- Xiaoxuan Ren
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Zhijian Tian
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Xuwen Gao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Yaojia Ai
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Mengwei Li
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Bin Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Guizheng Zou
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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2
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Tsang CY, Zhang Y. Nanomaterials for light-mediated therapeutics in deep tissue. Chem Soc Rev 2024; 53:2898-2931. [PMID: 38265834 DOI: 10.1039/d3cs00862b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Light-mediated therapeutics, including photodynamic therapy, photothermal therapy and light-triggered drug delivery, have been widely studied due to their high specificity and effective therapy. However, conventional light-mediated therapies usually depend on the activation of light-sensitive molecules with UV or visible light, which have poor penetration in biological tissues. Over the past decade, efforts have been made to engineer nanosystems that can generate luminescence through excitation with near-infrared (NIR) light, ultrasound or X-ray. Certain nanosystems can even carry out light-mediated therapy through chemiluminescence, eliminating the need for external activation. Compared to UV or visible light, these 4 excitation modes penetrate more deeply into biological tissues, triggering light-mediated therapy in deeper tissues. In this review, we systematically report the design and mechanisms of different luminescent nanosystems excited by the 4 excitation sources, methods to enhance the generated luminescence, and recent applications of such nanosystems in deep tissue light-mediated therapeutics.
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Affiliation(s)
- Chung Yin Tsang
- Department of Biomedical Engineering, College of Design and Engineering, National University of Singapore, Singapore 117583, Singapore.
| | - Yong Zhang
- Department of Biomedical Engineering, The City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong.
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3
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Gong Y, Fu Y, Lou D. A Eu-MOF-Based Fluorescent Sensing Probe for the Detection of Tryptophan and Cu 2+ in Aqueous Solutions. J Fluoresc 2024:10.1007/s10895-024-03633-9. [PMID: 38416282 DOI: 10.1007/s10895-024-03633-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 02/22/2024] [Indexed: 02/29/2024]
Abstract
Abnormal tryptophan (Trp) metabolism can be used as an important indicator of chronic hepatitis, paranoia, Parkinson's disease and other diseases. Deficiency or excessive accumulation of Cu2+ can cause diseases such as Wilson's disease and Alzheimer's disease. Eu-based metal-organic framework (Eu-MOF) was successfully prepared for fluorescence sensing of Trp and Cu2+ in an aqueous solution (pH = 7.4). Eu-MOF showed high selectivity and sensitivity for Trp and Cu2+ with detection limits of 0.22 µM and 0.09 µM and Ksv of 6.17 × 103 M- 1 and 2.37 × 104 M- 1 respectively. Trp and Cu2+ had overlapped UV absorption spectra with that of Eu-MOF and competed for the excitation light source. Trp also attenuated the antennae effect of organic ligands on Eu-MOF, thus quenching the red fluorescence of Eu-MOF. This study provides insights into the application of MOFs in bioanalysis and diagnostics.
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Affiliation(s)
- Yafei Gong
- Department of Analytical Chemistry, Jilin Institute of Chemical Technology, Jilin, 132022, P.R. China
| | - Yan Fu
- Department of Analytical Chemistry, Jilin Institute of Chemical Technology, Jilin, 132022, P.R. China
| | - Dawei Lou
- Department of Analytical Chemistry, Jilin Institute of Chemical Technology, Jilin, 132022, P.R. China.
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4
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Mohammadi F, Roushani M, Valipour A. Development of a label-free impedimetric aptasensor based on Zr-MOF and titaniom carbide nanosheets for detection of L-tryptophan. Bioelectrochemistry 2024; 155:108584. [PMID: 37832184 DOI: 10.1016/j.bioelechem.2023.108584] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 10/01/2023] [Accepted: 10/08/2023] [Indexed: 10/15/2023]
Abstract
This study primarily focuses on the L-Tryptophan (Trp) biomarker assay, with particular attention given to its objectives. The investigation centers on the potential implications of imbalanced Trp levels and its associated metabolites, which have been attributed to the spectrum of both psychological and physiological disorders, encompassing conditions such as cancer. Therefore, the swift and accurate detection of this amino acid is of paramount importance in cancer monitoring, as it plays a crucial role in preventing the metastasis and spread of cancer cells. Thus, an electrochemical aptasensor was designed based on nanocomposite of AgNPs@UiO-66/Ti3C2 (MXene) as immobilization strategy for the ultrasensitive detection of Trp. Zirconium metal-organic frameworks (Zr-MOFs) were employed as carriers for silver nanoparticles to facilitate subsequent binding with aptamers. Markedly, the obtained results show that the constructed aptasensor can specifically detect Trp in the two concentration range from 1fM to 1 nM and 1 nM to 200 nM and with a low detection limit of 0.35 fM. When applied to real samples, the experimental results demonstrated positive recovery rates. Consequently, a discerning and sensitive electrochemical aptasensor devoid of labeling agents was successfully fabricated for the explicit purpose of Trp detection.
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Affiliation(s)
- Farzaneh Mohammadi
- Department of Chemistry, Faculty of Sciences, Ilam University, Ilam P. O. BOX. 69315-516, Iran
| | - Mahmoud Roushani
- Department of Chemistry, Faculty of Sciences, Ilam University, Ilam P. O. BOX. 69315-516, Iran.
| | - Akram Valipour
- Department of Chemistry, Faculty of Sciences, Ilam University, Ilam P. O. BOX. 69315-516, Iran
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5
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Li L, Chen L, Song Z, Wu W, Zhao W, Wei Y, Wang B, Zhang C. Coal humus acid functionalized high stability fluorescent copper nanoclusters for tumor identification by sequential off-on-off monitoring tryptophan and Hg 2. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 294:122557. [PMID: 36893677 DOI: 10.1016/j.saa.2023.122557] [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: 10/26/2022] [Revised: 02/22/2023] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
The abnormalities of Tryptophan (Trp) and mercury ions (Hg2+) not only easily activate diseases, including mental illness and cancer, but also seriously affect human wellbeing. Fluorescent sensors are profoundly attractive options for identifying amino acids and ions; however, most sensors remain challenging due to the multipliable cost and deviation from the asynchronous quenching detection. In particular, fluorescent copper nanoclusters with high stability that quantitatively monitoring Trp and Hg2+ successively have seldom been reported. Herein, we employ coal humus acid (CHA) as a protective ligand and successfully construct weak cyan fluorescent copper nanoclusters (CHA-CuNCs) by a rapid, environmentally benign and cost-effective method. Significantly, the fluorescence of CHA-CuNCs is obviously improved by introducing Trp, because the indole group of Trp enhances the radiative recombination and aggregation-induced emissions. Interestingly, CHA-CuNCs not only realizes the highly selective and specific detection of Trp with a linear range of 25-200 μM and a detection limit of 0.043 μM based on the turn-on fluorescence strategy, but also quickly achieves the consecutive turn-off detection of Hg2+ due to the chelation interaction between Hg2+ and pyrrole heterocycle in Trp. Moreover, this method is successfully applied in the analysis of Trp and Hg2+ in real samples. Furthermore, the confocal fluorescent imaging of tumor cells demonstrates that CHA-CuNCs can be used for bioimaging and cancer cell recognition with Trp and Hg2+ abnormalities. These findings provide new guidance for the eco-friendly synthesis of CuNCs with eminent sequential off-on-off optical sensing property, indicating good prospects in biosensing and clinical medicine applications.
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Affiliation(s)
- Lin Li
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong 030619, China; Humic Acid Engineering and Technology Research Center of Shanxi Province, Jinzhong 030619, China; Institute of Carbon-based Humic Acid Bio-new Material Industry Technology of Shanxi Province, Jinzhong 030619, China.
| | - Le Chen
- School of Pharmaceutical Science, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Zhuoran Song
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong 030619, China
| | - Wenxin Wu
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong 030619, China
| | - Wenyan Zhao
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong 030619, China
| | - Yan Wei
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong 030619, China
| | - Bo Wang
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong 030619, China
| | - Caifeng Zhang
- College of Chemistry and Materials, Taiyuan Normal University, Jinzhong 030619, China; Humic Acid Engineering and Technology Research Center of Shanxi Province, Jinzhong 030619, China; Institute of Carbon-based Humic Acid Bio-new Material Industry Technology of Shanxi Province, Jinzhong 030619, China.
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6
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Yuan J, Fan X, Yang J, Zhang X. Rare earth complexes chemiluminescence catalyzed by gold nanoparticles for fast sensing of Tb3+ and Eu3+. CHINESE CHEM LETT 2023. [DOI: 10.1016/j.cclet.2023.108155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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7
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An ultra-selective smart electrochemical sensor based upon hydrophilic core-shell molecularly imprinted polymer for determination of L-tryptophan. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
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8
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Functionalized graphene quantum dots obtained from graphene foams used for highly selective detection of Hg2+ in real samples. Anal Chim Acta 2022; 1232:340422. [DOI: 10.1016/j.aca.2022.340422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/28/2022] [Accepted: 09/19/2022] [Indexed: 11/22/2022]
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9
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Liu QR, Liu B, Qiu MM, Miao WN, Xu L. A Europium MOF-based turn-off fluorescent sensor for tryptophan detection in human serum, urine and lake water. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Revesz IA, Hickey SM, Sweetman MJ. Metal ion sensing with graphene quantum dots: detection of harmful contaminants and biorelevant species. J Mater Chem B 2022; 10:4346-4362. [PMID: 35616384 DOI: 10.1039/d2tb00408a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Graphene quantum dots (GQDs) are attractive materials for use as highly selective and sensitive chemical sensors, owing to their simple preparation and affordability. GQDs have been successfully deployed as sensors for toxic metal ions, which is a significant issue due to the ever-increasing environmental contamination from agricultural and industrial activities. Despite the success of GQDs in this area, the mechanisms which underpin GQD-metal ion specificity are rarely explored. This lack of information can result in difficulties when attempting to replicate published procedures and can limit the judicious design of new highly selective GQD sensors. Furthermore, there is a dearth of GQD examples which selectively detect biologically relevant alkali and alkaline earth metals. This review will present the current state of GQDs as metal ion sensors for harmful contaminants, highlighting and discussing the discrepancies that exist in the proposed mechanisms regarding metal ion selectivity. The emerging field of GQD sensors for biorelevant metal ion species will also be reviewed, with a perspective to the future of this highly versatile material.
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Affiliation(s)
- Isabella A Revesz
- Clinical and Health Sciences, Cancer Research Institute, University of South Australia, Adelaide, South Australia, 5000, Australia.
| | - Shane M Hickey
- Clinical and Health Sciences, Cancer Research Institute, University of South Australia, Adelaide, South Australia, 5000, Australia.
| | - Martin J Sweetman
- Clinical and Health Sciences, Cancer Research Institute, University of South Australia, Adelaide, South Australia, 5000, Australia.
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11
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Sharma AS, Ali S, Sabarinathan D, Murugavelu M, Li H, Chen Q. Recent progress on graphene quantum dots-based fluorescence sensors for food safety and quality assessment applications. Compr Rev Food Sci Food Saf 2021; 20:5765-5801. [PMID: 34601802 DOI: 10.1111/1541-4337.12834] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 08/04/2021] [Accepted: 08/08/2021] [Indexed: 12/23/2022]
Abstract
The versatile photophysicalproperties, high surface-to-volume ratio, superior photostability, higher biocompatibility, and availability of active sites make graphene quantum dots (GQDs) an ideal candidate for applications in sensing, bioimaging, photocatalysis, energy storage, and flexible electronics. GQDs-based sensors involve luminescence sensors, electrochemical sensors, optical biosensors, electrochemical biosensors, and photoelectrochemical biosensors. Although plenty of sensing strategies have been developed using GQDs for biosensing and environmental applications, the use of GQDs-based fluorescence techniques remains unexplored or underutilized in the field of food science and technology. To the best of our knowledge, comprehensive review of the GQDs-based fluorescence sensing applications concerning food quality analysis has not yet been done. This review article focuses on the recent progress on the synthesis strategies, electronic properties, and fluorescence mechanisms of GQDs. The various GQDs-based fluorescence detection strategies involving Förster resonance energy transfer- or inner filter effect-driven fluorescence turn-on and turn-off response mechanisms toward trace-level detection of toxic metal ions, toxic adulterants, and banned chemical substances in foodstuffs are summarized. The challenges associated with the pretreatment steps of complex food matrices and prospects and challenges associated with the GQDs-based fluorescent probes are discussed. This review could serve as a precedent for further advancement in interdisciplinary research involving the development of versatile GQDs-based fluorescent probes toward food science and technology applications.
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Affiliation(s)
| | - Shujat Ali
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | | | | | - Huanhuan Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Quansheng Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China.,College of Food and Biological Engineering, Jimei University, Xiamen, China
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12
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Zhao XY, Wang J, Yang QS, Fu DL, Jiang DK. A hydrostable samarium(III)-MOF sensor for the sensitive and selective detection of tryptophan based on a "dual antenna effect". ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:3994-4000. [PMID: 34528942 DOI: 10.1039/d1ay01050f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Tryptophan (Trp) is one of the essential amino acids, which plays important roles in biological systems and the normal growth of human beings, and it is of great significance to be able to detect Trp in a rapid, efficient, and sensitive way. Herein, a 3D network metal-organic framework ([Sm2(BTEC)1.5(H2O)8]·6H2O) with excellent thermal and water stability was synthesized by a hydrothermal method. Interestingly, it could discriminate Trp from other natural amino acids in aqueous solution through a significant fluorescence enhancement effect, and showed high detection sensitivity (LOD = 330 nM) and outstanding anti-interference ability. The sensor system was successfully applied to the detection of Trp in practical samples, so it was expected to be a sensitive and efficient Trp sensor. In addition, the sensing mechanism was explained in detail by a series of characterization methods combined with density functional theory (DFT). There were many coordination water molecules in the crystal structure of the complex. Based on the small steric hindrance and molecular structure of water molecules, it provided the possibility for coordination interaction between Trp and Sm3+. On the other hand, the triplet energy level (T1) of Trp matched with the 4G5/2 vibrational energy level of Sm3+, so Trp could be used as the second "antenna molecule" besides 1,2,4,5-benzenetetracarboxylic acid (H4BTEC). Therefore, it effectively broadened the way for Sm-MOF to absorb excitation light.
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Affiliation(s)
- Xiao-Yang Zhao
- College of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014000, China.
| | - Jia Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014000, China.
| | - Qi-Shan Yang
- College of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014000, China.
| | - Dong-Lei Fu
- College of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014000, China.
| | - Dao-Kuan Jiang
- College of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou 014000, China.
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13
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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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14
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Wang R, Yue N, Fan A. Nanomaterial-enhanced chemiluminescence reactions and their applications. Analyst 2020; 145:7488-7510. [PMID: 33030463 DOI: 10.1039/d0an01300e] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Chemiluminescence (CL) analysis is a trace analytical method that possesses advantages including high sensitivity, wide linear range, easy operation, and simple instruments. With the development of nanotechnology, many nanomaterial (NM)-enhanced CL systems have been established in recent years and applied for the CL detection of metal ions, anions, small molecules, tumor markers, sequence-specific DNA, and RNA. This review summarizes the research progress of the nanomaterial-enhanced CL systems the past five years. These CL reactions include luminol, peroxyoxalate, lucigenin, ultraweak CL reactions, and so on. The CL mechanisms of the nanomaterial-enhanced CL systems are discussed in the first section. Nanomaterials take part in the CL reactions as the catalyst, CL emitter, energy acceptor, and reductant. Their applications are summarized in the second section. Finally, the challenges and opportunities are discussed.
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Affiliation(s)
- Ruyuan Wang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, PR China.
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15
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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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