1
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Maosong L, Yanxue G, Liang X, Dan L, Luxuan L, Yiming L, Jianglan Q. CdTe@ZnS quantum dots for rapid detection of organophosphorus pesticide in agricultural products. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 318:124451. [PMID: 38761472 DOI: 10.1016/j.saa.2024.124451] [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: 01/19/2024] [Revised: 04/22/2024] [Accepted: 05/10/2024] [Indexed: 05/20/2024]
Abstract
Organophosphorus pesticides (OPPs) constitute the most widely employed class of pesticides. However, the prevalent use of OPPs, while advantageous, raises concerns due to their toxicity, posing serious threats to food safety. Chemical sensors utilizing quantum dots (QDs) demonstrate promising applications in rapidly detecting OPPs residues, thereby facilitating efficient inspection of agricultural products. In this study, we employ an aqueous synthesis approach to prepare low toxic CdTe@ZnS QDs with stable fluorescence properties. To mitigate the risk of imprecise measurements stemming from the inherent susceptibility of fluorescence to quenching, we have adopted the principle of fluorescence resonance energy transfer (FRET) for the construction of the turn-on quantum dot sensor. With a detection limit for chlorpyrifos as low as 10 ppb (10 μg/L), the QDs sensor exhibits notable resistance to interference from various pesticides. Application of this system to detect organophosphorothioate pesticides in apples produced results consistent with those obtained from high-performance liquid chromatography (HPLC) detection, affirming the promising application prospects of this sensing system for the rapid detection of OPPs residues.
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Affiliation(s)
- Lin Maosong
- Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing 102206, China
| | - Guo Yanxue
- Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing 102206, China
| | - Xiang Liang
- Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing 102206, China
| | - Liang Dan
- Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing 102206, China
| | - Li Luxuan
- Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing 102206, China
| | - Li Yiming
- Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing 102206, China
| | - Qu Jianglan
- Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing 102206, China; Beijing Key Laboratory of Detection and Control of Spoilage Microorganisms and Pesticide Residues in Agricultural Products, Beijing University of Agriculture, Beijing 102206, China.
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2
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Zhou T, Chen D, Li H, Ge D, Chen X. Enhanced oxidase mimic activity of raspberry-like N-doped Mn 3O 4 with oxygen vacancies for efficient colorimetric detection of gallic acid coupled with smartphone. Food Chem 2024; 447:138919. [PMID: 38452538 DOI: 10.1016/j.foodchem.2024.138919] [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: 10/09/2023] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 03/09/2024]
Abstract
The content of gallic acid (GA) is positively correlated with the quality grade of tea. Here, we developed a colorimetric method based on raspberry-like N-doped Mn3O4 nanospheres (N-Mn3O4 NSs) with oxidase-like activity for GA assay. Modulating the electronic structure of Mn3O4 by N doping could promote the catalysis ability, and the produced oxygen vacancies (OVs) can provide high surface energy and abundant active sites. The N-Mn3O4 NSs presented low Michaelis-Menten constant (Km) of 0.142 mM and maximum initial velocity (Vmax) of 9.8 × 10-6 M s-1. The sensor exhibited excellent analytical performance towards GA detection, including low LOD (0.028 μM) and promising linear range (5 ∼ 30 μM). It is attributed that OVs and O2- participated in TMB oxidation. Based on the reaction color changes, a visualized semi-quantitative GA detection could be realized via a smartphone-based system. It could be applied for evaluating GA quality in market-purchased black tea and green tea.
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Affiliation(s)
- Tao Zhou
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Daqing Chen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Haoran Li
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China
| | - Danhua Ge
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China.
| | - Xiaojun Chen
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211800, PR China.
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3
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Gui Y, Zhao Y, Liu P, Wang Y, Mao X, Peng C, Hammock BD, Zhang C. Colorimetric and Reverse Fluorescence Dual-Signal Readout Immunochromatographic Assay for the Sensitive Determination of Sibutramine. ACS OMEGA 2024; 9:7075-7084. [PMID: 38371773 PMCID: PMC10870287 DOI: 10.1021/acsomega.3c09050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/24/2023] [Accepted: 01/15/2024] [Indexed: 02/20/2024]
Abstract
Later flow immunochromatographic assay has been widely used in clinical, environmental, and other diagnostic applications owing to its high sensitivity and throughput. However, most immunoassays operate in the "turn-off" mode for detecting targets of low molecular weight. The signal intensity decreases as the analyte concentration increases, which poses a challenge for achieving ultrasensitive detection at low concentrations and is counterintuitive to new users. In this work, a fluorometric immunochromatographic assay (FICA) is developed to simultaneously read "turn-on" fluorescent and "turn-off" colorimetric signals, where ZnCdSe/ZnS quantum dots act as fluorescence donors and gold nanoparticles (AuNPs) act as quenchers. The fluorescent signal (excitation/emission wavelengths of 365/525 nm) is positively correlated with analytes' concentration. Taking sibutramine (SBT) as the analysis target, the visual limit of detection for SBT reached 3.9 ng/mL, and the limit of Quantitation was 5.0 ng/mg in spiked samples. The developed FICA achieves a high sensitivity in SBT detection, which is much lower than that of the colloidal gold-based immunochromatographic assay. This dual-function detection mode has great potential to be used as a rapid on-site semiquantitative method, providing an alternative mode for the determination of low levels of target analytes.
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Affiliation(s)
- Yun Gui
- State
Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
| | - Yun Zhao
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
- State
Key Lab of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
| | - Pengyan Liu
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
| | - Yulong Wang
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
| | - Xinxin Mao
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
- College
of Plant Protection, Nanjing Agricultural
University, Nanjing 210095, P. R. China
| | - Chifang Peng
- State
Key Lab of Food Science and Technology, Jiangnan University, Wuxi 214122, P. R. China
| | - Bruce D. Hammock
- Department
of Entomology and Nematology and UCD Comprehensive Cancer Center, University of California, Davis, California 95616, United States
| | - Cunzheng Zhang
- State
Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, P. R. China
- Jiangsu
Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation
Base of Ministry of Science and Technology, Institute of Food Safety
and Nutrition, Jiangsu Academy of Agricultural
Sciences, Nanjing 210014, P. R. China
- College
of Plant Protection, Nanjing Agricultural
University, Nanjing 210095, P. R. China
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4
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Li J, Yang Y, Li Y, Zhao P, Fei J, Xie Y. Detection of gallic acid in food using an ultra-sensitive electrochemical sensor based on glass carbon electrode modified by bimetal doped carbon nanopolyhedras. Food Chem 2023; 429:136900. [PMID: 37506663 DOI: 10.1016/j.foodchem.2023.136900] [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: 06/12/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023]
Abstract
Gallic acid is widely used as an antioxidant in food because of its good antioxidant function, but excessive intake induces side effects in humans, so it is essential to devise a highly responsive technique for detecting gallic acid. In this work, we synthesized ZIF-67@FePc by the one-pot method. The synthesized material is more stable at high temperatures compared to ZIF-67 and maintains its original morphology during pyrolysis, when iron was introduced as a second metal active site during the synthesis process. Subsequently, Co/FeOX@NC-800 was employed to fabricate a GA sensor on a GCE. The developed sensor exhibited remarkable sensitivity towards GA, featuring a low LOD of 1.30 nM and a linear range spanning from 5 to 4500 nM. The electrochemical sensors we have prepared also showed good selectivity, stability, and reproducibility. It has been successfully employed for detecting GA in actual samples such as apples, grapes, tomatoes, and red wine.
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Affiliation(s)
- Jiejun Li
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Yaqi Yang
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Yuhong Li
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Pengcheng Zhao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China; Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, People's Republic of China
| | - Junjie Fei
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China; Hunan Institute of Advanced Sensing and Information Technology, Xiangtan University, Xiangtan 411105, People's Republic of China.
| | - Yixi Xie
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Xiangtan 411105, People's Republic of China; Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Xiangtan University, Xiangtan 411105, People's Republic of China.
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5
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Ratre P, Nazeer N, Bhargava A, Thareja S, Tiwari R, Raghuwanshi VS, Mishra PK. Design and Fabrication of a Nanobiosensor for the Detection of Cell-Free Circulating miRNAS-LncRNAS-mRNAS Triad Grid. ACS OMEGA 2023; 8:40677-40684. [PMID: 37953834 PMCID: PMC10637347 DOI: 10.1021/acsomega.3c05718] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/03/2023] [Indexed: 11/14/2023]
Abstract
The increased understanding of the competitive endogenous RNA (ceRNA) network in the onset and development of breast cancers has suggested their use as promising disease biomarkers. Keeping these RNAs as molecular targets, we designed and developed an optical nanobiosensor for specific detection of the miRNAs-LncRNAs-mRNAs triad grid in circulation. The sensor was formulated using three quantum dots (QDs), i.e., QD-705, QD-525, and GQDs. These QDs were surface-activated and modified with a target-specific probe. The results suggested the significant ability of the developed nanobiosensor to identify target RNAs in both isolated and plasma samples. Apart from the higher specificity and applicability, the assessment of the detection limit showed that the sensor could detect the target up to 1 fg concentration. After appropriate validation, the developed nanobiosensor might prove beneficial to characterizing and detecting aberrant disease-specific cell-free circulating miRNAs-lncRNAs-mRNAs.
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Affiliation(s)
- Pooja Ratre
- Division
of Environmental Biotechnology, Genetics & Molecular Biology, ICMR-National Institute for Research in Environmental
Health, Bhopal 462030, India
| | - Nazim Nazeer
- Division
of Environmental Biotechnology, Genetics & Molecular Biology, ICMR-National Institute for Research in Environmental
Health, Bhopal 462030, India
| | - Arpit Bhargava
- Division
of Environmental Biotechnology, Genetics & Molecular Biology, ICMR-National Institute for Research in Environmental
Health, Bhopal 462030, India
- Faculty
of Science, Ram Krishna Dharmarth Foundation
University, Bhopal 462030, India
| | - Suresh Thareja
- Department
of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda 151001, India
| | - Rajnarayan Tiwari
- Division
of Environmental Biotechnology, Genetics & Molecular Biology, ICMR-National Institute for Research in Environmental
Health, Bhopal 462030, India
| | - Vinay Singh Raghuwanshi
- Division
of Environmental Biotechnology, Genetics & Molecular Biology, ICMR-National Institute for Research in Environmental
Health, Bhopal 462030, India
| | - Pradyumna Kumar Mishra
- Division
of Environmental Biotechnology, Genetics & Molecular Biology, ICMR-National Institute for Research in Environmental
Health, Bhopal 462030, India
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6
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Wang J, Gong Y, Yan X, Han R, Chen H. CdTe-QDs Affect Reproductive Development of Plants through Oxidative Stress. TOXICS 2023; 11:585. [PMID: 37505551 PMCID: PMC10386043 DOI: 10.3390/toxics11070585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/23/2023] [Accepted: 07/04/2023] [Indexed: 07/29/2023]
Abstract
With the continuous development of industry, an increasing number of nanomaterials are widely used. CdTe-QDs is a nanomaterial with good optical properties, but its release into the natural environment may pose a potential threat. The toxicity of nanoparticles in plants is beginning to be questioned, and the effect on phytotoxicity is unclear. In this study, we simulated air pollution and soil pollution (CdTe-QDs concentrations of 0, 0.2, 0.4, 0.8 mmol/L) by spraying and watering the seedlings, respectively. We determined the transport pathways of CdTe-QDs in Arabidopsis thaliana and their effects on plant reproductive growth. Spraying CdTe-QDs concentration >0.4 mmol/L significantly inhibited the formation of fruit and decreased the number of seeds. Observation with a laser confocal scanning microscope revealed that CdTe-QDs were mainly transported in plants through the vascular bundle, and spraying increased their accumulation in the anthers and ovaries. The expression level of genes associated with Cd stress was analyzed through RT-qPCR. CdTe-QDs significantly increased the expression levels of 10 oxidative stress-related genes and significantly decreased the expression levels of four cell-proliferation-related genes. Our results reveal for the first time the transport of CdTe-QDs in Arabidopsis flowers and demonstrate that QDs can cause abnormal pollen morphology, form defects of pollen vitality, and inhibit pollen tube growth in Arabidopsis through oxidative damage. These phenomena ultimately lead to the inability of Arabidopsis to complete the normal fertilization process and affect the reproductive growth of the plant.
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Affiliation(s)
- Jianhua Wang
- Upgrading Office of Modern College of Humanities and Sciences of Shanxi Normal University, Linfen 041000, China
- Shanxi Key Laboratory of Plant Macromolecules Stress Response, Taiyuan 030000, China
| | - Yan Gong
- College of Life Science, Shanxi Normal University, Taiyuan 030000, China
| | - Xiaoyan Yan
- Shanxi Key Laboratory of Plant Macromolecules Stress Response, Taiyuan 030000, China
- College of Life Science, Shanxi Normal University, Taiyuan 030000, China
| | - Rong Han
- Shanxi Key Laboratory of Plant Macromolecules Stress Response, Taiyuan 030000, China
- College of Life Science, Shanxi Normal University, Taiyuan 030000, China
| | - Huize Chen
- Shanxi Key Laboratory of Plant Macromolecules Stress Response, Taiyuan 030000, China
- College of Life Science, Shanxi Normal University, Taiyuan 030000, China
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7
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Kutraite I, Malys N. Development and Application of Whole-Cell Biosensors for the Detection of Gallic Acid. ACS Synth Biol 2023; 12:533-543. [PMID: 36724292 PMCID: PMC9942251 DOI: 10.1021/acssynbio.2c00537] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Gallic acid is a prevalent secondary plant metabolite distinguished as one of the most effective free-radical scavengers among phenolic acids. This compound is also known for its cytotoxic, anti-inflammatory, and antimicrobial activities. Bulk quantities of gallic acid are conventionally produced by acid hydrolysis of tannins, a costly and environmentally hazardous process. With the aim to develop more sustainable approaches, microbial bioproduction strategies have been attempted recently. To advance synthetic biology and metabolic engineering of microorganisms for gallic acid production, we characterize here a transcription factor-based inducible system PpGalR/PPP_RS13150 that responds to the extracellular gallic acid in a dose-dependent manner in Pseudomonas putida KT2440. Surprisingly, this compound does not mediate induction when PpGalR/PPP_RS13150 is used in non-native host background. We show that the activation of the inducible system requires gallate dioxygenase activity encoded by galA gene. The 4-oxalomesaconic acid, an intermediate of gallic acid-metabolism, is identified as the effector molecule that interacts with the transcription factor GalR mediating activation of gene expression. Introduction of galA gene along galR enables development of biosensors suitable for detection and monitoring of gallic acid extracellularly using non-native hosts such as E. coli and C. necator. Moreover, the P. putida-based biosensor's applicability is demonstrated by detecting and measuring gallic acid in extracts of Camellia sinensis leaves. This study reports the strategy, which can be applied for developing gallic acid biosensors using bacterial species outside Pseudomonas genus.
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Affiliation(s)
- Ingrida Kutraite
- Bioprocess
Research Centre, Faculty of Chemical Technology, Kaunas University of Technology, Radvilėnų Street 19, LT-50254Kaunas, Lithuania
| | - Naglis Malys
- Bioprocess
Research Centre, Faculty of Chemical Technology, Kaunas University of Technology, Radvilėnų Street 19, LT-50254Kaunas, Lithuania,Department
of Organic Chemistry, Faculty of Chemical Technology, Kaunas University of Technology, Radvilėnų Street 19, LT-50254Kaunas, Lithuania,
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8
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Zhang J, Li Y, Gong X, Wang Y, Fu W. Colorimetric detection of total antioxidants in green tea with oxidase-mimetic CoOOH nanorings. Colloids Surf B Biointerfaces 2022; 218:112711. [PMID: 35907355 DOI: 10.1016/j.colsurfb.2022.112711] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/15/2022] [Accepted: 07/18/2022] [Indexed: 11/19/2022]
Abstract
Green tea is a popular beverage and is widely consumed due to its taste and antioxidative polyphenols. Herein, a smartphone-based colorimetric reader using cobalt oxyhydroxide (CoOOH) nanorings has been successfully applied to detect antioxidants in green tea with high reliability and robustness. By exploiting the oxidase-mimicking activity, the as-synthesized CoOOH nanorings replaces natural enzymes to directly catalyze oxidate colorless 3,3 ´ ,5,5 ´ -tetramethylbenzidine (TMB), while antioxidants can disintegrate CoOOH, leading to an antioxidant concentration-dependent color change. Benefiting from the CoOOH nanorings-based colorimetric strategy, a smartphone-assistant nanosensor was devised for portable and visual detection of antioxidants in green tea. The proposed method can be extended to visual detection of a diverse range of diseases by responding to their specific antioxidant, and thus provide a pivotal disease toolbox that is compatible for development at the point-of-care.
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Affiliation(s)
- Jiajia Zhang
- Engineering Research Center for Biotechnology of Active Substances (Ministry of Education), Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, PR China
| | - Yongfei Li
- Engineering Research Center for Biotechnology of Active Substances (Ministry of Education), Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, PR China
| | - Xue Gong
- Engineering Research Center for Biotechnology of Active Substances (Ministry of Education), Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, PR China
| | - Yi Wang
- Engineering Research Center for Biotechnology of Active Substances (Ministry of Education), Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, PR China.
| | - Wensheng Fu
- Engineering Research Center for Biotechnology of Active Substances (Ministry of Education), Chongqing Key Laboratory of Green Synthesis and Applications, College of Chemistry, Chongqing Normal University, Chongqing 401331, PR China.
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9
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Qi L, Ding H, Lu C, Wang X. A dual-mode optical assay for iron (II) and gallic acid based on Fenton reaction. LUMINESCENCE 2022. [PMID: 35417927 DOI: 10.1002/bio.4247] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 04/06/2022] [Accepted: 04/06/2022] [Indexed: 11/08/2022]
Abstract
The hydroxyl radicals (·OH) produced by the Fenton reaction of iron (II) and hydrogen peroxide (H2 O2 ) can oxidize the colorless 3,3',5,5'-tetramethylbenzidine (TMB) to blue oxidized TMB (Ox-TMB), resulting in a decrease in the fluorescence intensity of the reaction system and an increase in ultraviolet absorption. Ox-TMB had a visible absorption peak at 625 nm and a fluorescence peak around 420 nm. When gallic acid (GA) was added to the system, Ox-TMB was reduced to TMB, which made the color of the system disappear and the fluorescence recover. The linear ranges for determination of iron (II) were 0.5-10 μM (fluorometric) and 0.5-20 μM (colorimetric), and the detection limits were 0.25 μM (fluorometric) and 0.28 μM (colorimetric). The linear ranges for determination of GA were 0-80 μM (fluorometric) and 0-60 μM (colorimetric), and the detection limits were 0.31 μM (fluorometric) and 0.8 μM (colorimetric). The results of anti-interference experiments shew that this dual-mode assay had very good selectivity for the determination of iron (II) and GA.
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Affiliation(s)
- Li Qi
- College of Chemistry and Environmental Science, Shangrao Normal University, Shangrao, JiangXi Province, People's Republic of China
| | - Hao Ding
- College of Science, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Changfang Lu
- College of Science, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xianxiang Wang
- College of Science, Sichuan Agricultural University, Chengdu, Sichuan, China
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10
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Zhan D, Bian Z, Li H, Wang R, Fang G, Yao Q, Wu Z. Novel detection method for gallic acid: A water soluble boronic acid-based fluorescent sensor with double recognition sites. Bioorg Med Chem Lett 2021; 57:128483. [PMID: 34871766 DOI: 10.1016/j.bmcl.2021.128483] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 11/17/2021] [Accepted: 11/25/2021] [Indexed: 11/02/2022]
Abstract
As one of the widespread phenols in nature, gallic acid (GA) has attracted a subject of attention due to its extensive biological properties. It is very important and significant to develop a sensitive and selective gallic acid sensor. In recent years, owing to their reversible covalent binding with Lewis bases and polyols, boronic acid compounds have been widely reported as fluorescence sensors for the identification of carbohydrates, ions and hydrogen peroxide, etc. However, boronic acid sensors for specific recognition of gallic acid have not been reported. Herein, a novel water-soluble boronic acid sensor with double recognition sites is reported. When the concentration of gallic acid added was 1.1 × 10-4 M, the fluorescence intensity of sensor 9b decreased by 80%, followed by pyrogallic acid and dopamine. However, the fluorescence of the sensor 9b combined with other analytes such as ATP, sialic acid, and uridine was basically unchanged, indicating that the sensor 9b had no ability to recognize these analytes. Also, sensor 9b has a fast response time to gallic acid at room temperature, and has a high binding constant (12355.9 ± 156.89 M-1) and low LOD (7.30 × 10-7 M). Moreover, gallic acid content of real samples was also determined, and the results showed that this method has a higher recovery rate. Therefore, sensor 9b can be used as a potential tool for detecting biologically significant gallic acid in actual samples such as food, medicine, and environmental analysis samples.
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Affiliation(s)
- Dongxue Zhan
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China; Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China; Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China
| | - Zhancun Bian
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China; Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China; Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China
| | - Haizhen Li
- Development and Planning Department, Shandong Light Industry Collective Enterprise Association, Jinan 250102, Shandong, China
| | - Ran Wang
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China; Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China; Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China
| | - Guiqian Fang
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China; Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China; Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China
| | - Qingqiang Yao
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China; Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China; Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China.
| | - Zhongyu Wu
- Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250062, Shandong, China; Key Laboratory for Biotech-Drugs Ministry of Health, Jinan 250062, Shandong, China; Key Laboratory for Rare & Uncommon Diseases of Shandong Province, Jinan 250062, Shandong, China.
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11
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Tran L, Park S. Highly sensitive detection of dengue biomarker using streptavidin-conjugated quantum dots. Sci Rep 2021; 11:15196. [PMID: 34312404 PMCID: PMC8313577 DOI: 10.1038/s41598-021-94172-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/07/2021] [Indexed: 11/24/2022] Open
Abstract
A highly sensitive immunosensor using streptavidin-conjugated quantum dots (QDs/SA) was developed to detect dengue biomarker of non-structural protein 1 (NS1) at very low concentration, so that it can probe dengue infection even in the early stage. The QDs/SA were first bound to biotinylated NS1 antibody (Ab) and the QDs/SA-Ab conjugates were then used to detect the NS1 antigen (Ag) in the Ag concentration range of 1 pM to 120 nM. The formation of QDs/SA-Ab and QDs/SA-Ab-Ag conjugates was confirmed by the measurements of field emission scanning electron microscopy (FF-SEM), field emission transmission electron microscopy (FE-TEM), dynamic light scattering (DLS), and zeta-potential. Fluorescence emission spectra of QDs/SA-Ab-Ag conjugates showed that the magnitude of fluorescence quenching was linearly proportional to the NS1 Ag concentration and it nicely followed the Stern-Volmer (SV) equation in phosphate buffer solution. However, in human plasma serum solution, the fluorescence quenching behavior was negatively deviated from the SV equation presumably due to interference by the serum component biomolecules, and it was well explained by the Lehrer equation. These results suggest that the current approach is promising because it is highly sensitive, fast, simple, and convenient, and thus it has a potential of application for point-of-care.
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Affiliation(s)
- Linh Tran
- Department of Chemical and Biochemical Engineering, Dongguk University, Pildong-ro 1-gil 30, Jung-gu, Seoul, 04620, South Korea
| | - Sangkwon Park
- Department of Chemical and Biochemical Engineering, Dongguk University, Pildong-ro 1-gil 30, Jung-gu, Seoul, 04620, South Korea.
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Färkkilä SMA, Kiers ET, Jaaniso R, Mäeorg U, Leblanc RM, Treseder KK, Kang Z, Tedersoo L. Fluorescent nanoparticles as tools in ecology and physiology. Biol Rev Camb Philos Soc 2021; 96:2392-2424. [PMID: 34142416 DOI: 10.1111/brv.12758] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 12/21/2022]
Abstract
Fluorescent nanoparticles (FNPs) have been widely used in chemistry and medicine for decades, but their employment in biology is relatively recent. Past reviews on FNPs have focused on chemical, physical or medical uses, making the extrapolation to biological applications difficult. In biology, FNPs have largely been used for biosensing and molecular tracking. However, concerns over toxicity in early types of FNPs, such as cadmium-containing quantum dots (QDs), may have prevented wide adoption. Recent developments, especially in non-Cd-containing FNPs, have alleviated toxicity problems, facilitating the use of FNPs for addressing ecological, physiological and molecule-level processes in biological research. Standardised protocols from synthesis to application and interdisciplinary approaches are critical for establishing FNPs in the biologists' tool kit. Here, we present an introduction to FNPs, summarise their use in biological applications, and discuss technical issues such as data reliability and biocompatibility. We assess whether biological research can benefit from FNPs and suggest ways in which FNPs can be applied to answer questions in biology. We conclude that FNPs have a great potential for studying various biological processes, especially tracking, sensing and imaging in physiology and ecology.
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Affiliation(s)
- Sanni M A Färkkilä
- Institute of Ecology and Earth Sciences, University of Tartu, Ravila 14a, 50411, Tartu, Estonia
| | - E Toby Kiers
- Department of Ecological Science, Vrije Universiteit Amsterdam, De Boelelaan 1085, NL-1081 HV, Amsterdam, Noord-Holland, The Netherlands
| | - Raivo Jaaniso
- Institute of Physics, University of Tartu, W. Ostwaldi Str 1, 50411, Tartu, Tartumaa, Estonia
| | - Uno Mäeorg
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411, Tartu, Estonia
| | - Roger M Leblanc
- Department of Chemistry, Cox Science Center, University of Miami, 1301 Memorial Drive, Coral Gables, FL, 33124, U.S.A
| | - Kathleen K Treseder
- Department of Ecology and Evolutionary Biology, School of Biological Sciences, University of California, Irvine, 3106 Biological Sciences III, Mail Code: 2525, 92697, Irvine, CA, U.S.A
| | - Zhenhui Kang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou, 215123, China
| | - Leho Tedersoo
- Institute of Ecology and Earth Sciences, University of Tartu, Ravila 14a, 50411, Tartu, Estonia
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Zhang Y, Ning L, Gao D, Jia D, Gu W, Liu X. A highly sensitive upconversion nanoparticles@zeolitic imidazolate frameworks fluorescent nanoprobe for gallic acid analysis. Talanta 2021; 233:122588. [PMID: 34215078 DOI: 10.1016/j.talanta.2021.122588] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 06/03/2021] [Accepted: 06/05/2021] [Indexed: 02/07/2023]
Abstract
In this work, a core-shell structured upconversion nanoparticles@zeolitic imidazolate frameworks (ZIF-8) fluorescent nanoprobe (NaErF4:Tm@SiO2@ZIF-8) has been designed for the detection of gallic acid (GA). The mechanism is according to the 3, 3', 5, 5'-tetramethylbenzidine (TMB) can be oxidized to oxidized TMB (oxTMB) by Ag+. Under 980 nm laser excitation, NaErF4:Tm@SiO2@ZIF-8 can emit red light at 652 nm, which have a good overlap with the absorption spectra of oxTMB, resulting in the fluorescence quenching at 652 nm. Continually adding GA into the above solution, oxTMB will restore to TMB, and the fluorescence intensity at 652 nm gradually recovers, which can realize the detection towards GA. The linear detection range of GA is from 0 to 30 μM, and the limit of detection (LOD) of GA is 0.35 μM. The ZIF-8 can largely enhance the sensitivity of the nanoprobe, due to the physical absorption and the electrostatic attraction between ZIF-8 and the oxTMB. More importantly, this is the first time to realize the detection of GA with high sensitivity by using upconversion fluorescence. Besides, we have realized the analysis of GA in real samples, which certify the feasible of the nanoprobe in potential applications.
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Affiliation(s)
- Yuting Zhang
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Collaborative Innovation Centre of Chemical Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Liangmin Ning
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Collaborative Innovation Centre of Chemical Science and Engineering, Nankai University, Tianjin, 300071, China.
| | - Dameng Gao
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Collaborative Innovation Centre of Chemical Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Dandan Jia
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Collaborative Innovation Centre of Chemical Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Wen Gu
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Collaborative Innovation Centre of Chemical Science and Engineering, Nankai University, Tianjin, 300071, China.
| | - Xin Liu
- College of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), Tianjin Key Laboratory of Metal and Molecule Based Material Chemistry, Collaborative Innovation Centre of Chemical Science and Engineering, Nankai University, Tianjin, 300071, China.
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Zhang J, Yang W, Li S, Bian L. Fluorescent reversible regulation of cysteamine-capped ZnSe quantum dots successively induced by photoinduced electron transfer of herring sperm DNA and intercalation binding of ethidium bromide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 249:119116. [PMID: 33385973 DOI: 10.1016/j.saa.2020.119116] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 09/13/2020] [Accepted: 10/17/2020] [Indexed: 06/12/2023]
Abstract
A fluorescent reversible regulation was studied by fluorescence spectra, ultraviolet-visible spectra in the combination of molecular docking, which based on the photoinduced electron transfer(PET) from hsDNA (herring sperm DNA) to CA (cysteamine)-capped ZnSe QDs (quantum dots) and intercalation of ethidium bromide (EB) into hsDNA. It was proven that the QDs bound with the adding hsDNA by electrostatic force and formed 1:1 hsDNA-QDs complexes, leading to the PET from hsDNA to QDs, and consequently the fluorescence quenching of the QDs; with EB being added in the complex solution, it bound with hsDNA by intercalation interaction and caused hsDNA releasing from hsDNA-QDs complex with forming 2.5:1 EB-hsDNA complex, leading to the recovery of fluorescence, based on the greater binding constant (1.74 × 106 L·mol-1) of hsDNA with the embedded EB comparing to that of QDs with the captured hsDNA (4.25 × 104 L·mol-1). A good linear relationship existed between the fluorescence recovery yield and the EB concentrations under the range of 1.0-12.0 × 10-6 mol·L-1 with bare interference of related substances. This work provided some useful insights into the study of binding mechanism between DNAs with their intercalators and fluorescence bi-direction regulation, and showed great potential for the determination of trace EB.
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Affiliation(s)
- Jiaxin Zhang
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Wenhui Yang
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Shasha Li
- College of Life Science, Northwest University, Xi'an 710069, China
| | - Liujiao Bian
- College of Life Science, Northwest University, Xi'an 710069, China.
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15
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Tall A, da Costa KR, de Oliveira MJ, Tapsoba I, Rocha U, Sales TO, Goulart MOF, Santos JCC. Photoluminescent nanoprobes based on thiols capped CdTe quantum dots for direct determination of thimerosal in vaccines. Talanta 2021; 221:121545. [DOI: 10.1016/j.talanta.2020.121545] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/06/2020] [Accepted: 08/12/2020] [Indexed: 12/17/2022]
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16
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Gong W, Li H, Gong X, Zhang Z, Lu Z. Fabrication of amine functionalized CdSe@SiO 2 nanoparticles as fluorescence nanosensor for highly selective and sensitive detection of picric acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 233:118221. [PMID: 32151984 DOI: 10.1016/j.saa.2020.118221] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 03/02/2020] [Accepted: 03/02/2020] [Indexed: 06/10/2023]
Abstract
In this work, amino functionalized CdSe-silica core-shell nanoparticles (NH2-CdSe@SiO2 NPs) were constructed as probe to detect picric acid (PA). The CdSe QDs were embedded in SiO2 nanoparticles and modified with amino groups on the surface. The nitro explosives are electron deficient in nature, which will have stronger affinity for amines and resulted in fluorescence quenching of quantum dots. It was proved that this strategy is selective, easy and sensitive enough for sensing PA with a detection limit of 0.5 × 10-7 M.
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Affiliation(s)
- Wen Gong
- Department of Cardiology, The Third People's Hospital of Hubei Province Wuhan, 430030, China
| | - Hang Li
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Xiaoming Gong
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei Province, People's Republic of China
| | - Zaipeng Zhang
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei Province, People's Republic of China.
| | - Zhiyan Lu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, Hubei Province, People's Republic of China.
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Wu Y, Sun Z, Ye T, Zhang X, Yu B. Bright solid-state luminescence of green-red tunable CdTe@BaCO 3 composite: Synthesis and properties. LUMINESCENCE 2020; 35:955-959. [PMID: 32329180 DOI: 10.1002/bio.3811] [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: 02/13/2020] [Revised: 03/21/2020] [Accepted: 04/02/2020] [Indexed: 01/22/2023]
Abstract
Realizing efficient solid-state luminescence is of great important to expand quantum dots (QDs) application fields. This work reports the preparation of CdTe@BaCO3 composite by a one-pot precipitation method. Both steady-state PL and PL decay characteristics in either solid-state or colloid solution show no obvious difference, mainly benefited from the effective protection of BaCO3 on QDs from the external environment. By utilizing green and red CdTe QDs as dual-color emission centers, precise emitting-color control from green (0.312, 0.667) to red (0.691, 0.292) could be achieved in CdTe@BaCO3 composite by adjusting volume ratio of CdTe solution precursor. Our results demonstrate that this composite material shows bright solid-state luminescence and facile adjustment of the emitting color in QDs-based composite is feasible, which could offer new path to design color-tunable luminescent materials for future optoelectronic applications.
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Affiliation(s)
- Yiwu Wu
- New Drug Research And Development Center, Guangdong Pharmaceutical University, Guangzhou, China
| | - Zishan Sun
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Tong Ye
- New Drug Research And Development Center, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xinguo Zhang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Bangwei Yu
- New Drug Research And Development Center, Guangdong Pharmaceutical University, Guangzhou, China
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Hu G, Gao S, Han X, Yang L. Comparison of Immunochromatographic Strips Using Colloidal Gold, Quantum Dots, and Upconversion Nanoparticles for Visual Detection of Norfloxacin in Milk Samples. FOOD ANAL METHOD 2020. [DOI: 10.1007/s12161-020-01725-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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19
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Chen P, Bai Y, Tang Y, Yan S, Wang X, Wei W, Wang J, Zhang M, Ying B, Geng J. Rapid and highly sensitive visual detection of oxalate for metabolic assessment of urolithiasis via selective recognition reaction of CdTe quantum dots. J Mater Chem B 2020; 8:7677-7684. [PMID: 32716463 DOI: 10.1039/d0tb01108h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A homogeneous visual determination of oxalate method based on selective quenching reaction of QDs was constructed for metabolic assessment of urolithiasis.
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