1
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Tan K, Ma H, Mu X, Wang Z, Wang Q, Wang H, Zhang XD. Application of gold nanoclusters in fluorescence sensing and biological detection. Anal Bioanal Chem 2024:10.1007/s00216-024-05220-0. [PMID: 38436693 DOI: 10.1007/s00216-024-05220-0] [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: 11/29/2023] [Revised: 01/29/2024] [Accepted: 02/16/2024] [Indexed: 03/05/2024]
Abstract
Gold nanoclusters (Au NCs) exhibit broad fluorescent spectra from visible to near-infrared regions and good enzyme-mimicking catalytic activities. Combined with excellent stability and exceptional biocompatibility, the Au NCs have been widely exploited in biomedicine such as biocatalysis and bioimaging. Especially, the long fluorescence lifetime and large Stokes shift attribute Au NCs to good probes for fluorescence sensing and biological detection. In this review, we systematically summarized the molecular structure and fluorescence properties of Au NCs and highlighted the advances in fluorescence sensing and biological detection. The Au NCs display high sensitivity and specificity in detecting iodine ions, metal ions, and reactive oxygen species, as well as certain diseases based on the fluorescence activities of Au NCs. We also proposed several points to improve the practicability and accelerate the clinical translation of the Au NCs.
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Affiliation(s)
- Kexin Tan
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
| | - Huizhen Ma
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin, 300350, China
| | - Xiaoyu Mu
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
| | - Zhidong Wang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China
| | - Qi Wang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing, China.
| | - Hao Wang
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China.
| | - Xiao-Dong Zhang
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China.
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin, 300350, China.
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2
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Phimmasone S, Boonsri P, Siangproh W, Ratanawimarnwong N, Jittangprasert P, Mantim T, Limchoowong N, Songsrirote K. Carbon dots derived from citric acid and urea as fluorometric probe for determining melamine contamination in infant formula sample. Methods Appl Fluoresc 2023; 12:015003. [PMID: 37647911 DOI: 10.1088/2050-6120/acf547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 08/30/2023] [Indexed: 09/01/2023]
Abstract
Melamine has been intentionally added into food products to increase the protein count at less cost, especially in dairy products for infant resulting in serious adverse effects on health of consumers. Therefore, this study aimed to develop a method to quantify melamine in dairy products based on the change of fluorescent properties of carbon dots (CDs) as sensing probe. CDs with green-fluorescent emission were synthesized from citric acid and urea under microwave irradiation. The synthesized CDs emitted fluorescence at the maximum wavelength of 538 nm with excitation wavelength of 410 nm. Thus, they provided high sensitivity and selectivity on melamine detection by which fluorescent emission of the CDs was increasingly quenched upon increasing melamine concentrations. Optimal conditions for melamine determination using the CDs was under pH 6, volume ratio between CDs and sample of 2:8 and reaction time of 15 min. The developed method provided high precision of melamine determination with less than 5% of %RSD (n = 5), wide detection range from 1.0 to 200.0 ppm, and high sensitivity with limit of detection (LOD) of 0.47 ppm and limit of quantification (LOQ) of 1.56 ppm, which is within the regulated level by the Food and Drug Administration of the United States for melamine in dairy products. Several analytical characterization techniques were conducted to elucidate the reaction mechanism between CDs and melamine, and the hydrogen bonding interaction was proposed.
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Affiliation(s)
- Souliyanh Phimmasone
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
| | - Pornthip Boonsri
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
| | - Weena Siangproh
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
- Center of Excellence in Agricultural Innovation and Food Safety, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Nuanlaor Ratanawimarnwong
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
- Center of Excellence in Agricultural Innovation and Food Safety, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Piyada Jittangprasert
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
- Center of Excellence in Agricultural Innovation and Food Safety, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Thitirat Mantim
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
- Center of Excellence in Agricultural Innovation and Food Safety, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Nunticha Limchoowong
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
- Center of Excellence in Agricultural Innovation and Food Safety, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Kriangsak Songsrirote
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattana, Bangkok 10110, Thailand
- Center of Excellence in Agricultural Innovation and Food Safety, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
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3
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Cao W, Shan S, Xing K, Jing X, Peng J, Xiao X, Liu D, Xia J, Lai W. Novel rapid detection of melamine based on the synergistic aggregation of gold nanoparticles. Food Chem 2023; 428:136789. [PMID: 37423110 DOI: 10.1016/j.foodchem.2023.136789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 06/26/2023] [Accepted: 07/01/2023] [Indexed: 07/11/2023]
Abstract
A simple and rapid colorimetric method for the detection of melamine in milk samples is described. Polythymidine oligonucleotide was adsorbed on to the surface of gold nanoparticles (AuNPs), protecting it from aggregation. In the presence of melamine, polythymidine oligonucleotide combined with melamine formed a double-strand DNA-like structure, allowing AuNPs aggregation. In the presence of positively charged SYBR Green I (SG I), AuNPs were further aggregated. In the presence of melamine and SG I, aggregation of AuNPs was synergistic. Thus, in this principle, melamine can be detected visually. Plasmon resonance peak changes enabled detection of melamine quantitatively using UV-vis spectroscopy. The limit of detection for this colorimetric method was 16 μg L-1 with a good linear range from 19.5 μg L-1 to 1.25 × 103 μg L-1, and detection took only 1 min. The method was successfully applied for detection of melamine in milk samples.
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Affiliation(s)
- Wenkai Cao
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Shan Shan
- College of Life Science, National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China
| | - Keyu Xing
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, China
| | - Xudong Jing
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Juan Peng
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Xiaoyue Xiao
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China
| | - Daofeng Liu
- Jiangxi Province Key Laboratory of Diagnosing and Tracing of Foodborne Disease, Jiangxi Province Center for Disease Control and Prevention, 555 East Beijing Road, Nanchang 330029, China.
| | - Jun Xia
- Jiangxi Agricultural Technology Extension Center, Animal Epidemic Control Building, 698 Gaoxin Seventh Road, China.
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University 235, East Nanjing Road, Nanchang 330047, China.
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Atulbhai SV, Singhal RK, Basu H, Kailasa SK. Perspectives of different colour-emissive nanomaterials in fluorescent ink, LEDs, cell imaging, and sensing of various analytes. LUMINESCENCE 2023; 38:867-895. [PMID: 35501299 DOI: 10.1002/bio.4272] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/19/2022] [Accepted: 04/18/2022] [Indexed: 11/06/2022]
Abstract
In the past 2 decades, multicolour light-emissive nanomaterials have gained significant interest in chemical and biological sciences because of their unique optical properties. These materials have drawn much attention due to their unique characteristics towards various application fields. The development of novel nanomaterials has become the pinpoint for different application areas. In this review, the recent progress in the area of multicolour-emissive nanomaterials is summarized. The different emissions (white, orange, green, red, blue, and multicolour) of nanostructure materials (metal nanoclusters, quantum dots, carbon dots, and rare earth-based nanomaterials) are briefly discussed. The potential applications of different colour-emissive nanomaterials in the development of fluorescent inks, light-emitting diodes, cell imaging, and sensing devices are briefly summarized. Finally, the future perspectives of multicolour-emissive nanomaterials are discussed.
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Affiliation(s)
- Sadhu Vibhuti Atulbhai
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India
| | - Rakesh Kumar Singhal
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
| | - Hirakendu Basu
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
| | - Suresh Kumar Kailasa
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, Gujarat, India
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5
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Yue X, Pan Q, Zhou J, Ren H, Peng C, Wang Z, Zhang Y. A simplified fluorescent lateral flow assay for melamine based on aggregation induced emission of gold nanoclusters. Food Chem 2022; 385:132670. [DOI: 10.1016/j.foodchem.2022.132670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/02/2022] [Accepted: 03/07/2022] [Indexed: 11/04/2022]
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6
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Mattath MN, Ghosh D, Dong C, Govindaraju T, Shi S. Mercury mediated DNA-Au/Ag nanocluster ensembles to generate a gray code encoder for biocomputing. MATERIALS HORIZONS 2022; 9:2109-2114. [PMID: 35792070 DOI: 10.1039/d2mh00598k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Boolean operations utilizing DNA as a platform for biocomputing have become a promising tool for next-generation bio-molecular computers. In the whole process of any binary data transmission, bit errors are unavoidable and commonly occur. Cascades of exclusive-OR (XOR) operations show the great potential to evaluate these errors by introducing a parity generator (pG) and a parity checker (pC). Herein, we constructed a DNA hybrid architecture platform employing a chemosensing ensemble of mercury-mediated DNA-Au/Ag nanoclusters (M-Au/Ag NCs) to operate unconventional pG/pC for "error detection". Taking advantage of pG/pC, the transmitted and received data is converted to secure information using a binary to gray code encoder. To the best of our knowledge, this is the first molecular gray code encoder for biocomputing, which discovers an exciting avenue to protect information security through sophisticated logic circuits.
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Affiliation(s)
- Mohamed Nabeel Mattath
- School of Chemical Science and Engineering, Department of Oncology, Shanghai East Hospital, Tongji University, 1239 Siping Rd, Shanghai, 200092, P. R. China.
- Bioorganic Chemistry Laboratory, New Chemistry Unit and School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064, Karnataka, India.
| | - Debasis Ghosh
- Bioorganic Chemistry Laboratory, New Chemistry Unit and School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064, Karnataka, India.
| | - Chunyan Dong
- School of Chemical Science and Engineering, Department of Oncology, Shanghai East Hospital, Tongji University, 1239 Siping Rd, Shanghai, 200092, P. R. China.
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit and School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, 560064, Karnataka, India.
| | - Shuo Shi
- School of Chemical Science and Engineering, Department of Oncology, Shanghai East Hospital, Tongji University, 1239 Siping Rd, Shanghai, 200092, P. R. China.
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7
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Hariharan K, Patel P, Mehta T. Surface modifications of Gold Nanoparticles: Stabilization and Recent Applications in Cancer Therapy. Pharm Dev Technol 2022; 27:665-683. [PMID: 35850605 DOI: 10.1080/10837450.2022.2103825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Gold nanoparticles (GNP) are noble metal nanocarriers that have been recently researched upon for pharmaceutical applications, imaging, and diagnosis. These metallic nanocarriers are easy to synthesize using chemical reduction techniques as their surface can be easily modified. Also, the properties of GNP are significantly affected by its size and shape which mandates its stabilization using suitable techniques of surface modification. Over the past decade, research has focused on surface modification of GNP and its stabilization using polymers, polysaccharides, proteins, dendrimers, and phase-stabilizers like gel phase or ionic liquid phase. The use of GNP for pharmaceutical applications requires its surface modification using biocompatible and inert surface modifiers. The stabilizers used, interact with the surface of GNP to provide either electrostatic stabilization or steric stabilization. This review extensively discusses the surface modification techniques for GNP and the related molecular level interactions involved in the same. The influence of various factors like the concentration of stabilizers used their characteristics like chain length and thickness, pH of the surrounding media, etc., on the surface of GNP and resulting to stability have been discussed in detail. Further, this review highlights the recent applications of surface-modified GNP in the management of tumor microenvironment and cancer therapy.
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Affiliation(s)
- Kartik Hariharan
- Institute of Pharmacy, Nirma University, SG Highway, Gota, Ahmedabad-382481, Gujarat, India
| | - Parth Patel
- Institute of Pharmacy, Nirma University, SG Highway, Gota, Ahmedabad-382481, Gujarat, India
| | - Tejal Mehta
- Institute of Pharmacy, Nirma University, SG Highway, Gota, Ahmedabad-382481, Gujarat, India
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8
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Saleh SM, Almotiri MK, Ali R. Green synthesis of highly luminescent gold nanoclusters and their application in sensing Cu(II) and Hg(II). J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113719] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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9
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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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10
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Li Y, Zhai T, Chen J, Shi J, Wang L, Shen J, Liu X. Water-Dispersible Gold Nanoclusters: Synthesis Strategies, Optical Properties, and Biological Applications. Chemistry 2021; 28:e202103736. [PMID: 34854510 DOI: 10.1002/chem.202103736] [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: 10/16/2021] [Indexed: 12/14/2022]
Abstract
Atomically precise gold nanoclusters (AuNCs) are an emerging class of quantum-sized nanomaterials. Intrinsic discrete electronic energy levels have endowed them with fascinating electronic and optical properties. They have been widely applied in the fields of optoelectronics, photovoltaics, catalysis, biochemical sensing, bio-imaging, and therapeutics. Nevertheless, most AuNCs are synthesized in organic solvents and do not disperse in aqueous solutions; this restricts their biological applications. In this review, we focus on the recent progress in the preparation of water-dispersible AuNCs and their biological applications. We first review different methods of synthesis, including direct synthesis from hydrophilic templates and indirect phase transfer of hydrophobic AuNCs. We then discuss their photophysical properties, such as emission enhancement and fluorescence lifetimes. Next, we summarize their latest applications in the fields of biosensing, biolabeling, and bioimaging. Finally, we outline the challenges and potential for the future development of these AuNCs.
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Affiliation(s)
- Yu Li
- Division of Physical Biology, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Tingting Zhai
- School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jing Chen
- Division of Physical Biology, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China.,Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China
| | - Jiye Shi
- Division of Physical Biology, CAS Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, P. R. China
| | - Lihua Wang
- Shanghai Synchrotron Radiation Facility, Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, P. R. China.,Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai, 200127, P. R. China
| | - Jianlei Shen
- School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Xiaoguo Liu
- School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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11
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Sonia, Komal, Kukreti S, Kaushik M. Gold nanoclusters: An ultrasmall platform for multifaceted applications. Talanta 2021; 234:122623. [PMID: 34364432 DOI: 10.1016/j.talanta.2021.122623] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 01/22/2023]
Abstract
Gold nanoclusters (Au NCs) with a core size below 2 nm form an exciting class of functional nano-materials with characteristic physical and chemical properties. The properties of Au NCs are more prominent and extremely different from their bulk counterparts. The synthesis of Au NCs is generally assisted by template or ligand, which impart excellent cluster stability and high quantum yield. The tunable and sensitive physicochemical properties of Au NCs open horizons for their advanced applications in various interdisciplinary fields. In this review, we briefly summarize the solution phase synthesis and origin of the characteristic properties of Au NCs. A vast review of recent research work introducing biosensors based on Au NCs has been presented along with their specifications and detection limits. This review also highlights recent progress in the use of Au NCs as bio-imaging probe, enzyme mimic, temperature sensing probe and catalysts. A speculation on present challenges and certain future prospects have also been provided to enlighten the path for advancement of multifaceted applications of Au NCs.
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Affiliation(s)
- Sonia
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India; Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Komal
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India; Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Shrikant Kukreti
- Nucleic Acids Research Laboratory, Department of Chemistry, University of Delhi, Delhi, India
| | - Mahima Kaushik
- Nano-bioconjugate Chemistry Lab, Cluster Innovation Centre, University of Delhi, Delhi, India.
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12
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Rapid synthesis of fluorescent bovine serum albumin-gold nanoclusters complex for glutathione determination. Mikrochim Acta 2021; 188:193. [PMID: 34009425 DOI: 10.1007/s00604-021-04844-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 05/03/2021] [Indexed: 10/21/2022]
Abstract
A facile one-pot method for synthesis of bovine serum albumin (BSA)-gold nanoclusters (AuNCs) has been developed. The formation of BSA-AuNCs took only 30 s under mild conditions. BSA-AuNCs exhibited strong orange-yellow fluorescence, and the excitation and emission peaks were at 370 nm and 564 nm, respectively. In the process of forming BSA-AuNCs, the molecular chain of BSA has not been destroyed. Moreover, there were a large number of Au cations on the surface of BSA-AuNCs, which had strong oxidizing abilities. The reason for the ultrabright fluorescence of BSA-AuNCs was attributed to the Au(0)@Au(I)@Au(III)-ligand structure on the surface of BSA. In order to evaluate the fluorescence performance of BSA-AuNCs, BSA-AuNCs was used as a probe, realizing the sensitive and selective determination of glutathione (GSH) in a wide linear range of 0.01-0.48 μM and a detection limit of 3.3 nM. The proposed method not only offers a brand-new scheme for synthesizing BSA-AuNCs, but also provides a platform for studying the interaction between metal core and proteins. A facile one-pot method to synthesize ultrabright fluorescent BSA-AuNCs in tens of seconds has been introduced by mixing BSA suspension, KSCN, and HAuCl4. The as-prepared BSA-AuNCs showed intensive orange-yellow fluorescence under a UV lamp (365 nm), and BSA still keeps the integral molecular chains during the whole synthesis process. Moreover, the as-prepared BSA-AuNCs have realized the sensitive and selective detection of glutathione (GSH) in a wide linear range of 0.01-0.48 μM and a detection limit of 3.3 nM.
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13
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Ding H, Chen Z. Nanotheranostic Application of Fluorescent Protein-Gold Nanocluster Hybrid Materials: A Mini-review. Nanotheranostics 2021; 5:461-471. [PMID: 34055575 PMCID: PMC8156216 DOI: 10.7150/ntno.58060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/21/2021] [Indexed: 11/10/2022] Open
Abstract
The gold nanoclusters (Au NCs) are a special kind of gold nanomaterial containing several gold atoms. Because of their small size and large surface area, Au NCs possess macroscopic quantum tunneling and dielectric domain effects. Furthermore, Au NCs fluorescent materials have longer luminous time and better photobleaching resistance compared with other fluorescent materials. The synthetic process of traditional Au NCs is complicated. Traditional Au NCs are prepared mainly by using polyamide amine type dendrites, and sixteen alkyl trimethylamine bromide or sulfhydryl small molecule as stabilizers. They are consequently synthesized by the reduction of strong reducing agents such as sodium borohydride. Notably, these materials are toxic and environmental-unfriendly. Therefore, there is an urgent need to develop more effective methods for synthesizing Au NCs via a green approach. On the other hand, the self-assembly of protein gold cluster-based materials, and their biomedical applications have become research hotspots in this field. We have been working on the synthesis, assembly and application of protein conjugated gold clusters for a long time. In this review, the synthesis and assembly of protein-gold nanoclusters and their usage in cell imaging and other medical research are discussed.
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Affiliation(s)
- Han Ding
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325000, China.,State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry and Institute of Theoretical Chemistry, Jilin University, Changchun 130012, China.,Institute for translational medicine, Affiliated Hospital, Medical college of Qingdao University, Dengzhou Road 38, Qingdao 266021, China
| | - Zhijun Chen
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry and Institute of Theoretical Chemistry, Jilin University, Changchun 130012, China
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14
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15
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Wang HB, Mao AL, Tao BB, Zhang HD, Liu YM. Fabrication of multiple molecular logic gates made of fluorescent DNA-templated Au nanoclusters. NEW J CHEM 2021. [DOI: 10.1039/d0nj06192a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A universal platform of label-free multiple molecular logic gates have been constructed by taking the advantage of DNA-AuNCs.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - An-Li Mao
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - Bei-Bei Tao
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - Hong-Ding Zhang
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering
- Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains
- Xinyang Normal University
- Xinyang 464000
- China
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16
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Curcumin mediated PEG thiol acid conjugated gold nanoparticles for the determination of melamine. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104382] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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17
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Zhao J, Fan Z. Aggregation-induced phosphorescence quenching method for the detection of picric acid based on melamine-passivated Mn-doped ZnS quantum dots. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 223:117323. [PMID: 31272039 DOI: 10.1016/j.saa.2019.117323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 06/09/2023]
Abstract
Melamine (MA)-passivated Mn-doped ZnS quantum dots (QDs) were synthesized by a hydrothermal method. The MA-passivated QDs can form a charge-transfer complex with picric acid (PA) at 80 °C, thereby quenching the phosphorescence of the QDs. A sensitive method for detecting PA was established based on this principle of phosphorescence quenching. When the PA concentration ranged from 2.0 to 180 ng mL-1, the concentration was linearly related to the quenching intensity of the QDs, with a detection limit of 1.4 ng mL-1. When applied to detect PA in environmental water samples, the proposed method showed superior analytical performance compared with other PA analysis methods. Furthermore, we verified the static quenching mechanism by density functional theory. MA on the surface of QDs and PA formed a stable structure with a binding energy of 12.43 eV.
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Affiliation(s)
- Jie Zhao
- School of Chemistry and Materials Science, Shanxi Normal University, Linfen 041004, PR China
| | - Zhefeng Fan
- School of Chemistry and Materials Science, Shanxi Normal University, Linfen 041004, PR China.
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Zhao Y, Zhou H, Zhang S, Xu J. The synthesis of metal nanoclusters and their applications in bio-sensing and imaging. Methods Appl Fluoresc 2019; 8:012001. [PMID: 31726445 DOI: 10.1088/2050-6120/ab57e7] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Noble metal nanomaterials have been studied by many researchers for their ultra-small size, excellent photophysical properties and good biocompatibility. Metal nanoclusters are a kind of nanoscale ultrafine particle, which have completely different properties from macroscopic metals. In the visible region, they do not usually show the characteristic surface plasmon resonance absorption but instead show fluorescence in the visible to near infrared region. In particular, the noble metallic (Au, Ag, Cu, etc) nanoclusters (NMNCs) have broad application prospects in the field of biomedicine as probes for fluorescence sensing. Their strong photoluminescence, living cell compatibility, and easy availability make up for the shortcomings of traditional fluorescent probes such as organic fluorescent dyes, fluorescent proteins, and fluorescent quantum dots. In this review, we summarize the synthetic method and application of metal nanoclusters as fluorescent probes in bio-sensing and imaging, especially in the early diagnosis of cancer cells.
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Affiliation(s)
- Yu Zhao
- State Key Laboratory of Precision Spectroscopy, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, People's Republic of China
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Wang HB, Bai HY, Mao AL, Gan T, Liu YM. Poly(adenine)-templated fluorescent Au nanoclusters for the rapid and sensitive detection of melamine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 219:375-381. [PMID: 31059889 DOI: 10.1016/j.saa.2019.04.075] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 04/10/2019] [Accepted: 04/27/2019] [Indexed: 06/09/2023]
Abstract
A rapid and label-free fluorescence sensing strategy has been established for the sensitive determination of melamine (MA) on the basis of poly(adenine) (poly (A))-templated Au nanoclusters (AuNCs). The poly(A)-templated AuNCs possessed excellent luminescence and photo-stability. In the presence of Hg2+, the luminescence of AuNCs was quenched by Hg2+ through the metallophilic interactions between Au+ and Hg2+. When melamine was introduced, the fluorescence intensity of sensing system could be recovered. There was a greater coordination interaction between Hg2+ and melamine, which blocked the Hg2+-mediated fluorescence quenching of AuNCs. The assay allowed sensitive determination of melamine with a linear detection range from 50 nM to 100 μM. The limit of detection was as low as 16.6 nM. Furthermore, the label-free strategy was successfully employed for the detection of melamine concentration in real samples.
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Affiliation(s)
- Hai-Bo Wang
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, PR China.
| | - Hong-Yu Bai
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, PR China
| | - An-Li Mao
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, PR China
| | - Tian Gan
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, PR China.
| | - Yan-Ming Liu
- College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, PR China
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Jeong S, Kwon WY, Hwang SH, Shin J, Kim Y, Lee M, Park KS. Fluorescence, turn-on detection of melamine based on its dual functions as fluorescence enhancer of DNA-AgNCs and Hg(II)-scavenger. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:621-625. [DOI: 10.1080/21691401.2019.1574264] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Sehan Jeong
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Woo Young Kwon
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Sung Hyun Hwang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Jiye Shin
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
| | - Yonghwan Kim
- Daisung Green Tech, Gyeonggi-do, Republic of Korea
| | - Miran Lee
- Daisung Green Tech, Gyeonggi-do, Republic of Korea
| | - Ki Soo Park
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea
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Chen XY, Ha W, Shi YP. Sensitive colorimetric detection of melamine in processed raw milk using asymmetrically PEGylated gold nanoparticles. Talanta 2019; 194:475-484. [DOI: 10.1016/j.talanta.2018.10.070] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 10/16/2018] [Accepted: 10/21/2018] [Indexed: 01/07/2023]
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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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Xu L, Li D, Jiang B, Xiang Y, Yuan R. Melamine-Mediated Base Mismatch for Label-Free and Amplified Sensitive Fluorescent Detection of Melamine in Milk. FOOD ANAL METHOD 2019. [DOI: 10.1007/s12161-019-01465-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Li Y, Wang S, Tang Z, Bawa M, Ji Y, Wang X, Zhang K. Visual detection of H2O2 and melamine based on PW11MO39n− (M = Cu2+, Co2+, Mn2+, Fe3+) and PW9M3O34n− (M = Cu2+, Co2+, Mn2+, Fe3+). NEW J CHEM 2019. [DOI: 10.1039/c9nj03560e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The peroxidase-like activity of transition metal-substituted polyoxometalates (PW11MO39n−, PW9M3O34n−, abbreviated as PW11M and PW9M3, where M = Cu2+, Co2+, Mn2+, Fe3+) in the oxidation of 3,3′,5,5′-tetramethylbenzidine by H2O2 was valuated.
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Affiliation(s)
- Yiming Li
- Key Lab of Polyoxometalate Science of Ministry of Education
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Shengtian Wang
- Key Lab of Polyoxometalate Science of Ministry of Education
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Zhijie Tang
- Key Lab of Polyoxometalate Science of Ministry of Education
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Mbage Bawa
- Key Lab of Polyoxometalate Science of Ministry of Education
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Yu Ji
- Key Lab of Polyoxometalate Science of Ministry of Education
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Xiaohong Wang
- Key Lab of Polyoxometalate Science of Ministry of Education
- Faculty of Chemistry
- Northeast Normal University
- Changchun 130024
- P. R. China
| | - Kaizhi Zhang
- Department of Neurosurgery
- China-Japan Union Hospital of Jilin University
- Changchun 130033
- P. R. China
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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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26
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Ren SH, Liu SG, Ling Y, Li NB, Luo HQ. Fluorescence detection of melamine based on inhibiting Cu 2+-induced disaggregation of red-emitting silver nanoclusters. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 201:112-118. [PMID: 29742485 DOI: 10.1016/j.saa.2018.04.066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/12/2018] [Accepted: 04/29/2018] [Indexed: 06/08/2023]
Abstract
Herein, we report a facile method to synthesize red-emitting, water-soluble Ag nanoclusters (Ag NCs) employing lipoic acid as a stabilizing agent. The Ag NCs show aggregation-induced emission property and have good stability and optical properties. Cu2+ can disperse the aggregated Ag NCs, accompanied by the quenching of fluorescence. However, the formed Cu2+-melamine complex by the coordination chemistry between free copper ion and melamine is able to effectively avoid the quenching process of Cu2+ to the Ag NCs. Hence, the Ag NCs can be applied to design a novel fluorescent probe based on this property to detect melamine. In the determination of melamine, the as-prepared fluorescent Ag NCs exhibit favorable sensitivity and high selectivity. The limit of detection (LOD) down to 0.022 mg/L and good recoveries of real sample experiments were obtained. This fluorescent probe is proved to be convenient and rapid for detecting melamine, with potential application to trace melamine analysis in complicated samples.
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Affiliation(s)
- Shu Huan Ren
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Shi Gang Liu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Yu Ling
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China
| | - Nian Bing Li
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
| | - Hong Qun Luo
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China.
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Tang L, Mo S, Liu SG, Ling Y, Zhang XF, Li NB, Luo HQ. A Sensitive "Turn-On" Fluorescent Sensor for Melamine Based on FRET Effect between Polydopamine-Glutathione Nanoparticles and Ag Nanoparticles. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:2174-2179. [PMID: 29420884 DOI: 10.1021/acs.jafc.7b05245] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, Ag nanoparticles (AgNPs) were synthesized quickly by a one-step method utilizing polydopamine-glutathione nanoparticles (PDA-GNPs) as a reducing agent. The PDA-GNPs and the generated AgNPs acted as the energy donor and acceptor, respectively. Accordingly, the fluorescence of PDA-GNPs was quenched on the basis of fluorescence resonance energy transfer (FRET). In the presence of melamine, the preferential combination of Ag(I) and melamine to form Ag(I)-melamine complex prevents Ag(I) from forming AgNPs, together with fluorescence enhancement compared with the absence of melamine. Under the optimal conditions including the concentration of AgNO3, reaction time, reaction temperature, and pH, the fluorescence enhancement efficiency has a linear response to the concentration of melamine from 0.1 to 40 μM with a detection limit of 23 nM for melamine. The proposed method is simple, time-saving, and low-cost, which was further applied to detect melamine in real milk products with satisfactory results.
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Affiliation(s)
- Li Tang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , P. R. China
| | - Shi Mo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , P. R. China
| | - Shi Gang Liu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , P. R. China
| | - Yu Ling
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , P. R. China
| | - Xiao Fang Zhang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , P. R. China
| | - Nian Bing Li
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , P. R. China
| | - Hong Qun Luo
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering , Southwest University , Chongqing 400715 , P. R. China
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30
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Sensitive detection of alkaline phosphatase by switching on gold nanoclusters fluorescence quenched by pyridoxal phosphate. Biosens Bioelectron 2017; 95:8-14. [DOI: 10.1016/j.bios.2017.03.073] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/11/2017] [Accepted: 03/13/2017] [Indexed: 12/15/2022]
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31
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Noh Y, Jo EJ, Mun H, Ahn YD, Kim MG. Homogeneous and selective detection of cadmium ions by forming fluorescent cadmium-protein nanoclusters. CHEMOSPHERE 2017; 174:524-530. [PMID: 28189897 DOI: 10.1016/j.chemosphere.2017.02.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 01/18/2017] [Accepted: 02/04/2017] [Indexed: 06/06/2023]
Abstract
We synthesized fluorescent Cd nanoclusters (CdNCs) through a protein-directed method, and the synthesis method was utilized for a homogeneous, ultrasensitive, and selective detection of cadmium ion (Cd2+). CdNCs were synthesized using a modified protein-directed method for developing a rapid Cd2+ detection system. For rapid Cd2+ detection, the reaction time was reduced by optimizing the reaction conditions such as temperature, reducing agent concentration, and protein concentration. The synthesized CdNCs had ca. 2 nm diameter and showed strong fluorescence at 485 nm under 365 nm UV light. The fluorescence of the CdNCs increased with increasing Cd2+ concentrations, and the limit of detection in deionized water was 15.68 fM. This method enables the detection of Cd2+ through the Cd concentration-dependent formation of fluorescent CdNCs in tap, fountain, and pond water samples with detection limits of 0.75, 7.65, and 48.2 fM, respectively. The sensitivity and specificity of our method are comparable to those of several existing methods for Cd2+ detection. Furthermore, the system enables the homogeneous detection of Cd2+ without separation and washing, thereby broadening its application in analytical chemistry.
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Affiliation(s)
- Yuseon Noh
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Eun-Jung Jo
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Hyoyoung Mun
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Young-Deok Ahn
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Min-Gon Kim
- Department of Chemistry, School of Physics and Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
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Qu F, Xu X, You J. A new dual-emission fluorescence sensor based on carbon nanodots and gold nanoclusters for the detection of melamine. NEW J CHEM 2017. [DOI: 10.1039/c7nj02594g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new dual-emission fluorescence sensor is developed to detect melamine, in which the gold nanoclusters serve as the signal section and the carbon nanodots serve as the internal reference.
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Affiliation(s)
- Fei Qu
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
| | - Xiao Xu
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
| | - Jinmao You
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
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33
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Yang X, Jia Z, Tan Z, Xu H, Luo N, Liao X. Determination of melamine in infant formulas by fluorescence quenching based on the functionalized Au nanoclusters. Food Control 2016. [DOI: 10.1016/j.foodcont.2016.05.062] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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34
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Fu C, Liu C, Li Y, Guo Y, Luo F, Wang P, Guo L, Qiu B, Lin Z. Homogeneous Electrochemical Biosensor for Melamine Based on DNA Triplex Structure and Exonuclease III-Assisted Recycling Amplification. Anal Chem 2016; 88:10176-10182. [DOI: 10.1021/acs.analchem.6b02753] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | | | | | | | | | - Peilong Wang
- Key
Laboratory of Agrifood Safety and Quality, Ministry of Agriculture,
Institute of Quality Standards and Testing Technology for Agro-products, China Agricultural Academy of Science, Beijing 100081, People’s Republic of China
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35
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Recent Progresses in Nanobiosensing for Food Safety Analysis. SENSORS 2016; 16:s16071118. [PMID: 27447636 PMCID: PMC4970161 DOI: 10.3390/s16071118] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 07/12/2016] [Accepted: 07/14/2016] [Indexed: 12/21/2022]
Abstract
With increasing adulteration, food safety analysis has become an important research field. Nanomaterials-based biosensing holds great potential in designing highly sensitive and selective detection strategies necessary for food safety analysis. This review summarizes various function types of nanomaterials, the methods of functionalization of nanomaterials, and recent (2014-present) progress in the design and development of nanobiosensing for the detection of food contaminants including pathogens, toxins, pesticides, antibiotics, metal contaminants, and other analytes, which are sub-classified according to various recognition methods of each analyte. The existing shortcomings and future perspectives of the rapidly growing field of nanobiosensing addressing food safety issues are also discussed briefly.
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A droplet-based microfluidic immunosensor for high efficiency melamine analysis. Biosens Bioelectron 2016; 80:182-186. [DOI: 10.1016/j.bios.2015.12.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 12/09/2015] [Accepted: 12/12/2015] [Indexed: 01/13/2023]
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37
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Du Q, Qu F, Mao B, Zhu S, You J. Turn-on fluorescent detection of melamine based on Ag nanoclusters–Hg2+ system. NEW J CHEM 2016. [DOI: 10.1039/c6nj01338d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The blue-emissive Ag nanoclusters could be quenched by Hg2+ and recovered by melamine.
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Affiliation(s)
- Qianqian Du
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
| | - Fei Qu
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
| | - Beibei Mao
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
| | - Shuyun Zhu
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
| | - Jinmao You
- The Key Laboratory of Life-Organic Analysis
- Qufu Normal University
- Qufu 273165
- China
- Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine
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38
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Lee CY, Hsu NY, Wu MY, Lin YW. Microwave-assisted synthesis of BSA-stabilised gold nanoclusters for the sensitive and selective detection of lead(ii) and melamine in aqueous solution. RSC Adv 2016. [DOI: 10.1039/c6ra16043c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
MW-assisted synthesis of fluorescent BSA-AuNCs for the turn-off sensing of Pb(ii) and turn-on sensing of melamine.
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Affiliation(s)
- Che-Yu Lee
- Department of Chemistry
- National Changhua University of Education
- Changhua City
- Taiwan
| | - Nai-Yueh Hsu
- Department of Chemistry
- National Changhua University of Education
- Changhua City
- Taiwan
| | - Mei-Yao Wu
- Research Center for Traditional Chinese Medicine
- Department of Medical Research
- China Medical University Hospital
- Taichung City
- Taiwan
| | - Yang-Wei Lin
- Department of Chemistry
- National Changhua University of Education
- Changhua City
- Taiwan
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39
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Gu C, Xiang Y, Guo H, Shi H. Label-free fluorescence detection of melamine with a truncated aptamer. Analyst 2016; 141:4511-7. [DOI: 10.1039/c6an00537c] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The 88 nt melamine aptamer Rd29C33 was truncated to a 34 nt Rd29C33-T7, which is suitable for the label-free detection of melamine.
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Affiliation(s)
- Chunmei Gu
- State Key Joint Laboratory of ESPC
- School of Environment
- Tsinghua University
- Beijing 100084
- China
| | - Yu Xiang
- Research Centre of Environmental and Health Sensing Technology
- School of Environment
- Tsinghua University
- Beijing 100084
- China
| | - Hongli Guo
- State Key Joint Laboratory of ESPC
- School of Environment
- Tsinghua University
- Beijing 100084
- China
| | - Hanchang Shi
- State Key Joint Laboratory of ESPC
- School of Environment
- Tsinghua University
- Beijing 100084
- China
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40
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Zhang LX, Cao YR, Xiao H, Liu XP, Liu SR, Meng QH, Fan LY, Cao CX. Leverage principle of retardation signal in titration of double protein via chip moving reaction boundary electrophoresis. Biosens Bioelectron 2015; 77:284-91. [PMID: 26414025 DOI: 10.1016/j.bios.2015.09.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 08/28/2015] [Accepted: 09/01/2015] [Indexed: 12/17/2022]
Abstract
In the present work we address a simple, rapid and quantitative analytical method for detection of different proteins present in biological samples. For this, we proposed the model of titration of double protein (TDP) and its relevant leverage theory relied on the retardation signal of chip moving reaction boundary electrophoresis (MRBE). The leverage principle showed that the product of the first protein content and its absolute retardation signal is equal to that of the second protein content and its absolute one. To manifest the model, we achieved theoretical self-evidence for the demonstration of the leverage principle at first. Then relevant experiments were conducted on the TDP-MRBE chip. The results revealed that (i) there was a leverage principle of retardation signal within the TDP of two pure proteins, and (ii) a lever also existed within these two complex protein samples, evidently demonstrating the validity of TDP model and leverage theory in MRBE chip. It was also showed that the proposed technique could provide a rapid and simple quantitative analysis of two protein samples in a mixture. Finally, we successfully applied the developed technique for the quantification of soymilk in adulterated infant formula. The TDP-MRBE opens up a new window for the detection of adulteration ratio of the poor food (milk) in blended high quality one.
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Affiliation(s)
- Liu-Xia Zhang
- Laboratory of Analytical Biochemistry and Bioseparation, State Key Laboratory of Microbial Metabolism, School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yi-Ren Cao
- Laboratory of Analytical Biochemistry and Bioseparation, State Key Laboratory of Microbial Metabolism, School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hua Xiao
- Laboratory of Analytical Biochemistry and Bioseparation, State Key Laboratory of Microbial Metabolism, School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiao-Ping Liu
- Laboratory of Analytical Biochemistry and Bioseparation, State Key Laboratory of Microbial Metabolism, School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Shao-Rong Liu
- Department of Chemistry and Biochemistry, Oklahoma University, Norman, OK 73019, USA
| | - Qing-Hua Meng
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Liu-Yin Fan
- Laboratory of Analytical Biochemistry and Bioseparation, State Key Laboratory of Microbial Metabolism, School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; Department of Chemistry and Biochemistry, Oklahoma University, Norman, OK 73019, USA.
| | - Cheng-Xi Cao
- Laboratory of Analytical Biochemistry and Bioseparation, State Key Laboratory of Microbial Metabolism, School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China.
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41
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Zhu HW, Dai WX, Yu XD, Xu JJ, Chen HY. Poly thymine stabilized copper nanoclusters as a fluorescence probe for melamine sensing. Talanta 2015; 144:642-7. [PMID: 26452872 DOI: 10.1016/j.talanta.2015.07.022] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 07/02/2015] [Accepted: 07/07/2015] [Indexed: 01/05/2023]
Abstract
In this work, poly-thymine stabilized copper nanoclusters have been used as a fluorescence probe for melamine sensing for the first time. Melamine can bind to thymine through hydrogen bond, which could dramatically enhance the fluorescence intensity of poly-thymine stabilized copper nanoclusters. The enhancement factors (I-I0)/I0 increase linearly with the lgCmelamine over the melamine concentration range of 0.1 µM to 6 µM. The detection limit of melamine is 95 nM, which is 200 times lower than the US Food and Drug Administration estimate melamine safety limit 20 µM. Melamine in milk was detected with good recovery, which suggested that this novel fluorescence probe has great potential in practical application.
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Affiliation(s)
- Hong-Wei Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Wen-Xia Dai
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Xiao-Dong Yu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China.
| | - Jing-Juan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
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42
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Determination of melamine in food contact materials using an electrode modified with gold nanoparticles and reduced graphene oxide. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1533-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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43
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Zhang Y, Jiang H, Wang X. Cytidine-stabilized gold nanocluster as a fluorescence turn-on and turn-off probe for dual functional detection of Ag+ and Hg2+. Anal Chim Acta 2015; 870:1-7. [DOI: 10.1016/j.aca.2015.01.016] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 01/06/2015] [Accepted: 01/12/2015] [Indexed: 11/29/2022]
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44
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Wang H, Chen D, Yu L, Chang M, Ci L. One-step, room temperature, colorimetric melamine sensing using an in-situ formation of silver nanoparticles through modified Tollens process. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 137:281-285. [PMID: 25222324 DOI: 10.1016/j.saa.2014.08.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 04/12/2014] [Accepted: 08/24/2014] [Indexed: 06/03/2023]
Abstract
We have developed a rapid, sensitive, one-step, and selective colorimetric detection method for melamine (MEL) in milk powder based upon an in-situ formation of silver nanoparticles (AgNPs) through modified Tollens process at room temperature. The triazine ring N atoms of MEL molecule were strategically designed to complex the Ag(+) through electron donor-acceptor interaction. During the AgNPs formation procedure, the MEL molecule, which has been covalently bonded with the Ag(+) ions, was adsorbed to the surface of as-prepared AgNPs, resulting in the aggregation of the adjacent AgNPs with detectable decreases of absorption signal. The concentration of MEL can be determined with the naked eye or a UV-vis spectrometer at which the yellow-to-brown color change associated with aggregate enhancement takes place. This method enables rapid (less than 30 min) and sensitive (limit of detection, LOD, 10 nM) detection, and it was also able to discriminate MEL from sixteen other milk relevant coexisting compounds. This assay does not utilize organic cosolvents, enzymatic reactions, light-sensitive dye molecules, lengthy protocols, or sophisticated instrumentation thereby overcoming some of the limitations of conventional methods.
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Affiliation(s)
- Huiying Wang
- College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, People's Republic of China.
| | - Dinglong Chen
- College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, People's Republic of China; School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, People's Republic of China.
| | - Longquan Yu
- College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, People's Republic of China
| | - Ming Chang
- College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, People's Republic of China
| | - Lijie Ci
- College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, People's Republic of China
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45
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Lu Q, Zhang J, Wu Y, Chen S. Conjugated polymer dots/oxalate anodic electrochemiluminescence system and its application for detecting melamine. RSC Adv 2015. [DOI: 10.1039/c5ra10809h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The anodic electrochemiluminescence behavior of an ammonolysis product of PFO in aqueous solution.
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Affiliation(s)
- Qiyi Lu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Juanjuan Zhang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Yuanya Wu
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Electrical Power Sources
- Institute for Clean Energy & Advanced Materials
- Southwest University
- Chongqing 400715
- P.R. China
| | - Shihong Chen
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
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46
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Abstract
Melamine is an emerging contaminant in milk, infant formula and pet food.
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Affiliation(s)
- Ying Li
- Department of Food Quality and Safety
- Jilin University
- Changchun 130062
- China
| | - Jingyue Xu
- Department of Food Quality and Safety
- Jilin University
- Changchun 130062
- China
| | - Chunyan Sun
- Department of Food Quality and Safety
- Jilin University
- Changchun 130062
- China
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47
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Wang L, Chen G, Zeng G, Liang J, Dong H, Yan M, Li Z, Guo Z, Tao W, Peng L. Fluorescent sensing of sulfide ions based on papain-directed gold nanoclusters. NEW J CHEM 2015. [DOI: 10.1039/c5nj01783a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This fluorescence sensing system showed excellent performance and could be applied to the determination of S2− in natural water samples.
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48
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Wang Y, Zhang J, Zhu L, Lu L, Feng C, Wang F, Xu Z, Zhang W. Activation of Mg2+-dependent DNAzymes based on AP site-containing triplex for specific melamine recognition. Analyst 2015; 140:7508-12. [DOI: 10.1039/c5an01515d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A novel strategy for melamine recognition based on melamine binding-triggered triplex formation and DNAzyme activity regulation was developed.
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Affiliation(s)
- Ya Wang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P.R. China
| | - Junying Zhang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P.R. China
| | - Linling Zhu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P.R. China
| | - Linlin Lu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P.R. China
| | - Chongchong Feng
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P.R. China
| | - Fengyang Wang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P.R. China
| | - Zhiai Xu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P.R. China
| | - Wen Zhang
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- P.R. China
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49
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Recent advances in the field of bionanotechnology: an insight into optoelectric bacteriorhodopsin, quantum dots, and noble metal nanoclusters. SENSORS 2014; 14:19731-66. [PMID: 25340449 PMCID: PMC4239883 DOI: 10.3390/s141019731] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 10/08/2014] [Accepted: 10/15/2014] [Indexed: 12/20/2022]
Abstract
Molecular sensors and molecular electronics are a major component of a recent research area known as bionanotechnology, which merges biology with nanotechnology. This new class of biosensors and bioelectronics has been a subject of intense research over the past decade and has found application in a wide variety of fields. The unique characteristics of these biomolecular transduction systems has been utilized in applications ranging from solar cells and single-electron transistors (SETs) to fluorescent sensors capable of sensitive and selective detection of a wide variety of targets, both organic and inorganic. This review will discuss three major systems in the area of molecular sensors and electronics and their application in unique technological innovations. Firstly, the synthesis of optoelectric bacteriorhodopsin (bR) and its application in the field of molecular sensors and electronics will be discussed. Next, this article will discuss recent advances in the synthesis and application of semiconductor quantum dots (QDs). Finally, this article will conclude with a review of the new and exciting field of noble metal nanoclusters and their application in the creation of a new class of fluorescent sensors.
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50
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Ni P, Dai H, Wang Y, Sun Y, Shi Y, Hu J, Li Z. Visual detection of melamine based on the peroxidase-like activity enhancement of bare gold nanoparticles. Biosens Bioelectron 2014; 60:286-91. [DOI: 10.1016/j.bios.2014.04.029] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 04/08/2014] [Accepted: 04/17/2014] [Indexed: 10/25/2022]
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