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Chhillar M, Kukkar D, Kumar Yadav A, Kim KH. Nitrogen doped carbon dots and gold nanoparticles mediated FRET for the detection of creatinine in human urine samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 321:124752. [PMID: 38945007 DOI: 10.1016/j.saa.2024.124752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 06/19/2024] [Accepted: 06/26/2024] [Indexed: 07/02/2024]
Abstract
Serum creatinine (CR) is regarded as one of the most sought out prognostic biomarkers in medical evaluation of chronic kidney disease (CKD). In light of the diagnostic significance of CR, the utility of a fluorescence biosensor for its detection in human urine specimens has been explored based on Förster resonance energy transfer (FRET) across nitrogen-doped carbon dots (N-CDs) and gold nanoparticles (GNPs). A straightforward microwave-assisted synthesis procedure has been adopted to prepare N-CDs (λexcitation = 400 nm, λemission = 540 ± 5 nm) with bright green emissions. On addition of pre-synthesized GNPs, the radiative emanation of the N-CDs is completely suppressed on account of FRET across the N-CDs and the GNPs. About 77 % of their fluorescence intensity is recovered after adding CR to GNPs@N-CDs nanocomposite. The limit of detection for CR sensing is estimated as 0.02 µg•mL-1. This biosensor is selective enough to recognize CR in the existence of potential interfering substances (e.g., ascorbic acid, glucose, glutathione, urea, and electrolytes). Its practical utility for CR detection has been validated further on the basis of satisfactory correlation with the benchmark Jaffe method, as observed in artificial/human urine specimens. Consequently, this manuscript marks a pioneering report on employing CDs and GNPs-based FRET for identifying CR in urine specimens of CKD patients.
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Affiliation(s)
- Monika Chhillar
- Department of Biotechnology, Chandigarh University, Gharuan, Mohali 140413, Punjab, India; University Centre for Research and Development, Chandigarh University, Gharuan, Mohali 140413, Punjab, India
| | - Deepak Kukkar
- Department of Biotechnology, Chandigarh University, Gharuan, Mohali 140413, Punjab, India; University Centre for Research and Development, Chandigarh University, Gharuan, Mohali 140413, Punjab, India.
| | - Ashok Kumar Yadav
- Department of Experimental Medicine and Biotechnology, Post Graduate Institute of Medical Education and Research, Sector 12, Chandigarh, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, South Korea.
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2
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Lanthanide coordination polymer nanoparticles as a ratiometric fluorescence sensor for real-time and visual detection of tetracycline by a smartphone and test paper based on the analyte-triggered antenna effect and inner filter effect. Anal Chim Acta 2022; 1206:339809. [DOI: 10.1016/j.aca.2022.339809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/31/2022] [Accepted: 04/03/2022] [Indexed: 01/24/2023]
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3
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Singh VR, Pandey SP, Singh PK. A Unique Supramolecular Assembly between Sulfated Cyclodextrin, Silver and Melamine: Towards a Fluorescence based Dual Wavelength Detection Approach for Melamine. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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Bao X, Liu J, Zheng Q, Duan L, Zhang Y, Qian J, Tu T. Colorimetric recognition of melamine in milk using novel pincer zinc complex stabilized gold nanoparticles. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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5
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Yang C, Jing J, Liu Y, Gao M, Zhao H, Gao N, Zhang X. Polydopamine nanodots-based cost-effective nanoprobe for glucose detection and intracellular imaging. Anal Bioanal Chem 2021; 413:4865-4872. [PMID: 34169349 DOI: 10.1007/s00216-021-03447-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 05/31/2021] [Indexed: 01/21/2023]
Abstract
The cellular glucose detection remains a vital topic, which could provide some essential information about the glucose-based pathological and physiological processes. In this study, a smart polydopamine nanodots-based cost-effective fluorescence turn-on nanoprobe (denoted as PDA-Ag-GOx) for intracellular glucose detection is established. Silver nanoparticles (AgNPs) are directly formed in one step by the reduction of fluorescent polydopamine nanodots (PDADs) which have much phenolic hydroxyls on the surface. The fluorescence of PDADs could be quenched by AgNPs through surface plasmon-enhanced energy transfer (SPEET) from donor PDADs to acceptor AgNPs. Glucose oxidase (GOx) is modified on the PDA-Ag NPs by covalent bond. In the presence of glucose, GOx could catalyze glucose to produce H2O2 and gluconic acid. The generated acid and H2O2 would degrade AgNPs into Ag+, the PDADs release and restore its fluorescence. The proposed nanoprobe has some advantages, such as cost-effective, easy preparation, and excellent selectivity toward glucose, which could be successfully utilized to intracellular glucose imaging.
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Affiliation(s)
- Chunlei Yang
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Jing Jing
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Yazhou Liu
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Mengxu Gao
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Hengzhi Zhao
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Na Gao
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China
| | - Xiaoling Zhang
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, People's Republic of China.
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Dave RS, Goostrey TC, Ziolkowska M, Czerny-Holownia S, Hoare T, Sheardown H. Ocular drug delivery to the anterior segment using nanocarriers: A mucoadhesive/mucopenetrative perspective. J Control Release 2021; 336:71-88. [PMID: 34119558 DOI: 10.1016/j.jconrel.2021.06.011] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 12/16/2022]
Abstract
There is a growing demand for effective treatments for ocular conditions that improve patient compliance and reduce side-effects. While methods such as implants and injections have proven effective, topical administration remains the method of choice for the delivery of therapeutics to the anterior segment of the eye. However, topical administration suffers from multiple drawbacks including low bioavailability of the target therapeutic, systemic toxicity, and the requirement for high therapeutic doses due to the effective clearance mechanisms that exist in the eye. Nanoparticles that have tunable mucoadhesion and/or mucopenetration offer outstanding potential to overcome the anatomical and physiological barriers present to improve ocular bioavailability, reduce toxicity, and increase ocular retention, among other benefits. The current review highlights recent advances in the field of developing nanocarriers with tunable mucoadhesion and mucopenetration for drug delivery to the eye.
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Affiliation(s)
- Ridhdhi S Dave
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Taylor C Goostrey
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Maya Ziolkowska
- Department of Integrated Biomedical Engineering & Health Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Sofia Czerny-Holownia
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada
| | - Heather Sheardown
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4L8, Canada.
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7
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Han L, Fan YZ, Qing M, Liu SG, Yang YZ, Li NB, Luo HQ. Smartphones and Test Paper-Assisted Ratiometric Fluorescent Sensors for Semi-Quantitative and Visual Assay of Tetracycline Based on the Target-Induced Synergistic Effect of Antenna Effect and Inner Filter Effect. ACS APPLIED MATERIALS & INTERFACES 2020; 12:47099-47107. [PMID: 33003698 DOI: 10.1021/acsami.0c15482] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Development of selective and sensitive methods for on-site assay of tetracycline (TC) is of great significance for public health and food safety. Herein, a valid ratiometric fluorescence strategy using g-C3N4 nanosheets coupled with Eu3+ is designed for the assay of TC. In this strategy, both Eu3+ and g-C3N4 nanosheets serve as the recognition units of TC. The blue fluorescence of g-C3N4 nanosheets can be quenched by TC via the inner filter effect (IFE); meanwhile, the red fluorescence of Eu3+ can be enhanced by TC through the antenna effect (AE). The synergistic effect of AE and IFE caused by TC makes the developed ratiometric fluorescent sensor display a wide linear range for TC from 0.25 to 80 μM with a detection limit of 6.5 nM and a significant fluorescence color evolution from blue to red. Given its simplicity, free-label, excellent selectivity, high sensitivity, and recognizable color change, point-of-care testing systems, including smartphones and test paper-based assays, are developed for the visual sensing of TC. The integration of smartphones and test paper on a ratiometric fluorescent sensor greatly reduces the detection cost and time, providing a promising method for the qualitative discernment and semi-quantitative assay of TC on-site. Moreover, the potential application of the approach is also verified by detecting TC in milk.
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Affiliation(s)
- Lei Han
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Yu Zhu Fan
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Min Qing
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Shi Gang Liu
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, P. R. China
| | - Yu Zhu Yang
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Nian Bing Li
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
| | - Hong Qun Luo
- School of Chemistry and Chemical Engineering, Southwest University, Tiansheng Road, BeiBei District, Chongqing 400715, P. R. China
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8
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Li Q, Wang H, Yue X, Du J. Perovskite nanocrystals fluorescence nanosensor for ultrasensitive detection of trace melamine in dairy products by the manipulation of inner filter effect of gold nanoparticles. Talanta 2020; 211:120705. [PMID: 32070571 DOI: 10.1016/j.talanta.2019.120705] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/24/2019] [Accepted: 12/30/2019] [Indexed: 11/15/2022]
Abstract
Barium sulfate-coated CsPbBr3 perovskite nanocrystals (CsPbBr3 NCs@BaSO4) was successfully synthesized that exhibited stable and intense fluorescence property in aqueous buffer. With the CsPbBr3 NCs@BaSO4 as signal readout, an ultrasensitive fluorescence nanosensor was developed for turn-on determination of melamine by the manipulation of inner filter effect of citrate-protected gold nanoparticles (AuNPs). The fluorescence of the CsPbBr3 NCs@BaSO4 was remarkably quenched by the AuNPs due to inner filter effect. This inner filter effect could be weakened by the addition of melamine as a result of melamine-triggering aggregation of the AuNPs and subsequently led to a recovery in the fluorescence of the CsPbBr3 NCs@BaSO4. The recovery ratio was proportional to the concentration of melamine in the range of 5.0-500.0 nmol/L. The limit of detection was 0.42 nmol/L and the relative standard deviation was 4.0% for the repetitive determination of 500.0 nmol/L melamine solution (n = 11). The nanosensor was successfully applied to analysis of melamine in dairy product samples.
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Affiliation(s)
- Qian Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Hongbo Wang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Xuanfeng Yue
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Jianxiu Du
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China.
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9
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Wang J, Liu X, Huang L, Jin J, Jiang C, Li D, Wen H, Hu J. Controllable and robust dual-emissive quantum dot nanohybrids as inner filter-based ratiometric probes for visualizable melamine detection. NANOSCALE 2020; 12:4562-4572. [PMID: 32043096 DOI: 10.1039/c9nr08849k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The ratiometric fluorescence technique is of great interest due to its visualization characteristics. The construction of a reliable fluorescent ratiometric nanoprobe for high-sensitivity visual quantification is highly sought after but it is limited by poor stability and controllability. Herein, we report a robust dual-emissive quantum dot nanohybrid with precise color tunability and demonstrate its potential as a two-signal-change ratiometric probe for visual detection. A novel assembly strategy was developed for spatially implanting hydrophobic green and red quantum dots (QDs) into a silica scaffold to form a dual-emissive hierarchical fluorescent silica nanohybrid. The fluorescence intensity ratio and color of the nanohybrid were precisely tailored by altering the amounts of green and red QDs. Particularly, after the alkylsilane-mediated phase transfer and exterior silica shell growth, the nanohybrid exhibited the well-preserved fluorescence features of the original QDs and robust optical/colloid stability. An inner filter-based ratiometric nanoprobe for the visual determination of melamine was ultimately devised by combining the spectra-overlapped two-colored fluorescent nanohybrid with analyte-specific gold nanoparticles. Furthermore, based on the reversible fluorescence signal changes in two-colored QDs induced by melamine, a logic gate strategy for melamine monitoring was constructed. The newly developed fluorescent ratiometric nanoprobe shows great prospects for the visual and quantitative determination of analytes in a complex biological matrix.
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Affiliation(s)
- Jing Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China.
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10
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Qiu S, Wei Y, Tu T, Xiang J, Zhang D, Chen Q, Luo L, Lin Z. Triazole-stabilized fluorescence sensor for highly selective detection of copper in tea and animal feed. Food Chem 2020; 317:126434. [PMID: 32106007 DOI: 10.1016/j.foodchem.2020.126434] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 02/06/2020] [Accepted: 02/17/2020] [Indexed: 01/27/2023]
Abstract
A triazole-stabilized fluorescence sensor is developed for copper detection in the study. Tris-(benzyltriazolylmethyl)amine (TBTA) is used to improve the sensitivity and stability for the sensing system. A series of comparative experiments are performed with and without TBTA. In the presence of TBTA, the fluorescence decrease ratio is enhanced from 2.46 to 118.25; the detection limit is reduced from 67 nM to 3.6 nM; the higher selectivity toward copper compared to the other metal ions is verified, including K+, Ca2+, Cd2+, Zn2+, Mg2+, Mn2+, Pb2+, Hg2+, Fe3+ and Cr3+. Besides, the sensing system is successfully applied for copper determination in complex tea samples and chicken feed samples with the recovery range of 91.67-116.8%. A good consistency between the presented sensor and the flame atom absorbance spectrometry (FAAS) is confirmed by the low relative errors with the range from -2.39% to 7.02%.
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Affiliation(s)
- Suyan Qiu
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Yihua Wei
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Tianhua Tu
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Jianjun Xiang
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Dawen Zhang
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Qinglong Chen
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Linguang Luo
- Laboratory of Quality & Safety Risk Assessment for Animal Products (Nanchang), Ministry of Agriculture and Rural Affairs, Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China.
| | - Zhenyu Lin
- MOE Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China.
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11
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Chen B, Wang F. Recent advances in the synthesis and application of Yb-based fluoride upconversion nanoparticles. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01358j] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
This review focuses on recent progress in the development of Yb-based upconversion nanoparticles and their emerging technological applications.
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Affiliation(s)
- Bing Chen
- Department of Materials Science and Engineering
- City University of Hong Kong
- Hong Kong SAR
- China
- City University of Hong Kong Shenzhen Research Institute
| | - Feng Wang
- Department of Materials Science and Engineering
- City University of Hong Kong
- Hong Kong SAR
- China
- City University of Hong Kong Shenzhen Research Institute
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12
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Bao X, Liu J, Zheng Q, Pei W, Yang Y, Dai Y, Tu T. Visual recognition of melamine in milk via selective metallo-hydrogel formation. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.07.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Mass-Sensitive Sensing of Melamine in Dairy Products with Molecularly Imprinted Polymers: Matrix Challenges. SENSORS 2019; 19:s19102366. [PMID: 31126005 PMCID: PMC6566888 DOI: 10.3390/s19102366] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/06/2019] [Accepted: 05/21/2019] [Indexed: 12/20/2022]
Abstract
Food standards and quality control are important means to ensure public health. In the last decade, melamine has become a rather notorious example of food adulteration: Spiking products with low-cost melamine in order to feign high amino acid content exploits the lack in specificity of the established Kjeldahl method for determining organic nitrogen. This work discusses the responses of a sensor based on quartz crystal microbalances (QCM) coated with molecularly imprinted polymers (MIP) to detect melamine in real life matrices both in a selective and a sensitive manner. Experiments in pure milk revealed no significant sensor responses. However, sensor response increased to a frequency change of −30Hz after diluting the matrix ten times. Systematic evaluation of this effect by experiments in melamine solutions containing bovine serum albumin (BSA) and casein revealed that proteins noticeably influence sensor results. The signal of melamine in water (1600 mg/L) decreases to half of its initial value, if either 1% BSA or casein are present. Higher protein concentrations decrease sensor responses even further. This suggests significant interaction between the analyte and proteins in general. Follow-up experiments revealed that centrifugation of tagged serum samples results in a significant loss of sensor response, thereby further confirming the suspected interaction between protein and melamine.
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Abstract
Illegal adulteration of milk products by melamine and its analogs has become a threat to the world. In 2008, the misuse of melamine with infant formula caused serious effects on babies of China. Thereafter, the government of China and the US Food and Drug Administration (FDA) limited the use of melamine of 1 mg/kg for infant formula and 2.5 mg/kg for other dairy products. Similarly, the World Health Organization (WHO) has also limited the daily intake of melamine of 0.2 mg/kg body weight per day. Many sensory schemes have been proposed by the scientists for carrying out screening on melamine poisoning. Among them, nanomaterial-based sensing techniques are very promising in terms of real-time applicability. These materials uncover and quantify the melamine by means of diverse mechanisms, such as fluorescence resonance energy transfer (FRET), aggregation, inner filter effect, surface-enhanced Raman scattering (SERS), and self-assembly, etc. Nanomaterials used for the melamine determination include carbon dots, quantum dots, nanocomposites, nanocrystals, nanoclusters, nanoparticles, nanorods, nanowires, and nanotubes. In this review, we summarize and comment on the melamine sensing abilities of these nanomaterials for their suitability and future research directions.
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Fu Y, Jin H, Bu X, Gui R. Melamine-Induced Decomposition and Anti-FRET Effect from a Self-Assembled Complex of Rhodamine 6G and DNA-Stabilized Silver Nanoclusters Used for Dual-Emitting Ratiometric and Naked-Eye-Visible Fluorescence Detection. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:9819-9827. [PMID: 30160493 DOI: 10.1021/acs.jafc.8b03402] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, blue-emitting silver nanoclusters (AgNCs) were prepared in a matrix of single-stranded deoxyribonucleic acid (DNA) on the basis of ambient hydrothermal reactions. DNA acted as the stabilizer or coating agent, and NaBH4 was used as the reducing agent. Through the interactions between rhodamine 6G (Rh6G) and the synthesized DNA-AgNCs, the self-assembled complex of DNA-AgNC-Rh6G was generated. Meanwhile, fluorescence emission of AgNCs was weakened as a result of fluorescence-resonance-energy transfer (FRET) from AgNCs (donor) to Rh6G (acceptor). In the DNA-AgNC-Rh6G complex aqueous suspension, the addition of melamine induced obvious emission recovery of AgNCs and fluorescence decrease of Rh6G, attributable to melamine-induced decomposition of the self-assembled complex and anti-FRET effects. There was a well-plotted linear relationship of ratiometric fluorescence intensities ( IAgNCs/ IRh6G) versus melamine concentration in the range of 0.1-10 μM, with a low detection limit of 25 nM. Responses of IAgNCs/ IRh6G to melamine were highly selective and sensitive over potential interferents. A novel dual-emitting ratiometric fluorescence sensor of melamine was facilely constructed on the basis of the DNA-AgNC-Rh6G complex. In particular, the sensor enabled visual fluorescence detection of melamine both in aqueous solution and on wetted filter paper. Superior detection results of the sensor were experimentally obtained and confirmed its high feasibility for melamine detection in practical samples.
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Affiliation(s)
- Yongxin Fu
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory , Qingdao University , Shandong 266071 , PR China
| | - Hui Jin
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory , Qingdao University , Shandong 266071 , PR China
| | - Xiangning Bu
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory , Qingdao University , Shandong 266071 , PR China
| | - Rijun Gui
- College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory , Qingdao University , Shandong 266071 , PR China
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Kini S, Ganiga V, Kulkarni SD, Chidangil S, George SD. Sensitive detection of mercury using the fluorescence resonance energy transfer between CdTe/CdS quantum dots and Rhodamine 6G. JOURNAL OF NANOPARTICLE RESEARCH 2018; 20:232. [DOI: 10.1007/s11051-018-4320-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 08/09/2018] [Indexed: 06/24/2023]
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17
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Cunha FA, Cunha MDCSO, da Frota SM, Mallmann EJJ, Freire TM, Costa LS, Paula AJ, Menezes EA, Fechine PBA. Biogenic synthesis of multifunctional silver nanoparticles from Rhodotorula glutinis and Rhodotorula mucilaginosa: antifungal, catalytic and cytotoxicity activities. World J Microbiol Biotechnol 2018; 34:127. [PMID: 30084085 DOI: 10.1007/s11274-018-2514-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 08/01/2018] [Indexed: 01/14/2023]
Abstract
Silver nanoparticles (AgNPs) have several technological applications and may be synthetized by chemical, physical and biological methods. Biosynthesis using fungi has a wide enzymatic range and it is easy to handle. However, there are few reports of yeasts with biosynthetic ability to produce stable AgNPs. The purpose of this study was to isolate and identify soil yeasts (Rhodotorula glutinis and Rhodotorula mucilaginosa). After this step, the yeasts were used to obtain AgNPs with catalytic and antifungal activity evaluation. Silver Nanoparticles were characterized by UV-Vis, DLS, FTIR, XRD, EDX, SEM, TEM and AFM. The AgNPs produced by R. glutinis and R. mucilaginosa have 15.45 ± 7.94 nm and 13.70 ± 8.21 nm (average ± SD), respectively, when analyzed by TEM. AgNPs showed high catalytic capacity in the degradation of 4-nitrophenol and methylene blue. In addition, AgNPs showed high antifungal activity against Candida parapsilosis and increase the activity of fluconazole (42.2% for R. glutinis and 29.7% for R. mucilaginosa), while the cytotoxicity of AgNPs was only observed at high concentrations. Finally, two yeasts with the ability to produce AgNPs were described and these particles showed multifunctionality and can represent a technological alternative in many different areas with potential applications.
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Affiliation(s)
- Francisco A Cunha
- Grupo de Química de Materiais Avançados (GQMat)- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará - UFC, Campus do Pici, CP 12100, CEP 60451-970, Fortaleza, CE, Brazil.,Laboratório de Microbiologia de Leveduras - Departamento de Análises Clínicas, Universidade Federal do Ceará - UFC, Fortaleza, Brazil
| | - Maria da C S O Cunha
- Laboratório de Microbiologia de Leveduras - Departamento de Análises Clínicas, Universidade Federal do Ceará - UFC, Fortaleza, Brazil
| | - Sabrina M da Frota
- Laboratório de Microbiologia de Leveduras - Departamento de Análises Clínicas, Universidade Federal do Ceará - UFC, Fortaleza, Brazil
| | - Eduardo J J Mallmann
- Grupo de Química de Materiais Avançados (GQMat)- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará - UFC, Campus do Pici, CP 12100, CEP 60451-970, Fortaleza, CE, Brazil
| | - Tiago M Freire
- Grupo de Química de Materiais Avançados (GQMat)- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará - UFC, Campus do Pici, CP 12100, CEP 60451-970, Fortaleza, CE, Brazil
| | - Luelc S Costa
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa Em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, São Paulo, Brazil
| | - Amauri J Paula
- Solid-Biological Interface Group (SolBIN), Departamento de Física, Universidade Federal do Ceará, P.O. Box 6030, Fortaleza, CE, 60455-900, Brazil
| | - Everardo A Menezes
- Laboratório de Microbiologia de Leveduras - Departamento de Análises Clínicas, Universidade Federal do Ceará - UFC, Fortaleza, Brazil
| | - Pierre B A Fechine
- Grupo de Química de Materiais Avançados (GQMat)- Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará - UFC, Campus do Pici, CP 12100, CEP 60451-970, Fortaleza, CE, Brazil.
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18
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Han X, Qin Z, Zhao M, Song J, Qu F, Qu F, Kong RM. Convenient and sensitive colorimetric detection of melamine in dairy products based on Cu(ii)-H2O2-3,3′,5,5′-tetramethylbenzidine system. RSC Adv 2018; 8:34877-34882. [PMID: 35547033 PMCID: PMC9087323 DOI: 10.1039/c8ra07167e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 10/04/2018] [Indexed: 12/12/2022] Open
Abstract
The illegal adulteration of melamine in dairy products for false protein content increase is a strong hazard to human health. Herein, a simple and sensitive colorimetric method was developed for the quantification of melamine in dairy products based on a Cu2+-hydrogen peroxide (H2O2)-3,3′,5,5′-tetramethylbenzidine (TMB) system. In this strategy, Cu2+ exhibits peroxidase-like activity and can catalyze the oxidation of TMB to oxidized TMB (oxTMB) in the presence of H2O2 with a blue colour change of the solution. However, the presence of melamine quickly interacts with H2O2 leading to the consumption of H2O2 and thus strongly hinders the oxidation of TMB. Under the optimal conditions, the absorbance change of oxTMB has a linear response to the concentration of melamine from 1 to 100 μM with a detection limit of 0.5 μM for melamine. The proposed method has many merits including more simplicity, good selectivity, and more cost-effectiveness without using any nanomaterials. The method was further successfully applied to detect melamine in dairy products including milk and infant formula powder. Convenient and sensitive colorimetric detection of melamine in dairy products based on a Cu(ii)-H2O2-3,3′,5,5′-tetramethylbenzidine system was reported.![]()
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Affiliation(s)
- Xue Han
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu
- P. R. China
| | - Zhixin Qin
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu
- P. R. China
| | - Mengyao Zhao
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu
- P. R. China
| | - Jiajia Song
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu
- P. R. China
| | - Fei Qu
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu
- P. R. China
| | - Fengli Qu
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu
- P. R. China
| | - Rong-Mei Kong
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu
- P. R. China
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19
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Chen P, Yang P, Zhou R, Yang X, Chen J, Hou X. Selective reduction-based, highly sensitive and homogeneous detection of iodide and melamine using chemical vapour generation-atomic fluorescence spectrometry. Chem Commun (Camb) 2018; 54:4696-4699. [PMID: 29676429 DOI: 10.1039/c8cc01186a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A selective reduction-based method was proposed for the sensitive detection of iodide and melamine using chemical vapour generation (CVG) coupled with atomic fluorescence spectrometry (AFS).
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Affiliation(s)
- Piaopiao Chen
- Key Lab of Green Chem & Tech of MOE, and College of Chemistry
- Sichuan University
- Chengdu 610064
- China
| | - Peng Yang
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Rongxing Zhou
- Biliary Surgical Department
- West China Hospital
- Sichuan University
- Chengdu
- China
| | - Xi Yang
- Key Lab of Green Chem & Tech of MOE, and College of Chemistry
- Sichuan University
- Chengdu 610064
- China
| | - Junbo Chen
- Analytical & Testing Center
- Sichuan University
- Chengdu 610064
- China
| | - Xiandeng Hou
- Key Lab of Green Chem & Tech of MOE, and College of Chemistry
- Sichuan University
- Chengdu 610064
- China
- Analytical & Testing Center
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