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Zhao W, Huang C, Guo X, Zhu Y, Li Y, Duan Y, Gao J. A Fluorescence Biosensor Based on Carbon Quantum Dots Prepared from Pomegranate Peel and T-Hg 2+-T Mismatch for Hg 2+ Detection. J Fluoresc 2024:10.1007/s10895-024-03645-5. [PMID: 38427224 DOI: 10.1007/s10895-024-03645-5] [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: 01/29/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
Mercury ions (Hg2+) can cause damage to human health, and thus, the study of the detection of Hg2+ is extraordinarily important in daily life. This work reported a fluorescence biosensor for the detection of Hg2+. The key point of this strategy was that the fluorescence of carbon quantum dots made from pomegranate peel (P-CQDs) was quenched by hemin, and restored after G-quadruplex binding with hemin. The presence of Hg2+ caused thymine (T)-rich DNA fragments to form T-Hg2+-T mismatches, and this change allowed the release of G-quadruplex. G-quadruplex could change the fluorescence of hemin/P-CQDs. P-CQDs exhibited excellent properties through characterization analysis, such as transmission electron microscope, X-ray photoelectron spectroscopy and Fourier transform infrared. This proposed fluorescence detection strategy established the linear ranges of Hg2+ from 1 nM to 50 nM. In conclusion, this simple biosensor had the advantages of strong sensitivity, high selectivity, and low cost for Hg2+ detection in environmental water samples.
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Affiliation(s)
- Weiqin Zhao
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P. R. China.
| | - Chun Huang
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P. R. China
| | - Xiyu Guo
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P. R. China
| | - Youyu Zhu
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P. R. China
| | - Yuangang Li
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P. R. China
| | - Yingfeng Duan
- College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an, 710054, P. R. China
| | - Jie Gao
- Department of Stomatology, Xi'an International Medical Center Hospital Affiliated to Northwest University, Xi'an, 710061, P. R. China
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2
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Shu Y, Li J, Bai H, Liang A, Wen G, Jiang Z. A new SERS quantitative analysis method for trace malathion with recognition and catalytic amplification difunctional MOF Tb@Au@MIP nanoprobe. Talanta 2024; 267:125166. [PMID: 37717541 DOI: 10.1016/j.talanta.2023.125166] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 08/22/2023] [Accepted: 09/04/2023] [Indexed: 09/19/2023]
Abstract
New multifunctional nanomaterial preparation and its application to trace pollutant analysis are interesting to peoples. Using terbium metal-organic framework loaded gold nanoparticles (MOFTb@Au) as the nanosubstrate and 3-aminopropyltriethoxysilane (APTES) as the functional monomer, a new bifunctional nanosurface molecularly imprinted polymer nanoprobe of MOFTb@Au@MIP with strongly recognition and catalytic amplification functions was prepared by the microwave sol-gel procedure. It was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier infrared spectroscopy (FTIR) and other techniques. The nanoprobe was found to specifically recognize malathion (MAL) and catalyze the L-cysteine (Cys)-HAuCl4 nanogold indicator reaction to amplify the molecular spectral signal. The gold nanoparticles (AuNPs) generated in the system show a strong surface-enhanced Raman scattering (SERS) effect, resonant Rayleigh scattering (RRS) peak and UV absorption (Abs) peak at 1615 cm-1, 370 nm and 520 nm, respectively. Based on this, a new SERS/RRS/Abs trimode method for the detection of MAL can be established. It has been applied to the analysis of cereal samples with satisfactory recoveries of 95.2-107.4% and precision of 3.76-9.06%.
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Affiliation(s)
- Yiyi Shu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, 541006, China
| | - Jingjing Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, 541006, China
| | - Hongyan Bai
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, 541006, China
| | - Aihui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, 541006, China
| | - Guiqing Wen
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, 541006, China.
| | - Zhiliang Jiang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin, 541006, China.
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3
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Alqarni AM, Haredy AM, Abdelrahman KS, Soltan OM, Abdel-Aal MAA, Alrofaidi MA, Aalamri A, Osman ME, Alamri AA, Hamad AA. Application of a white and green spectrofluorimetric approach for facile quantification of amlodipine, a hypotensive drug, in batch materials, dosage forms, and biological fluids; content homogeneity testing. LUMINESCENCE 2024; 39:e4661. [PMID: 38286594 DOI: 10.1002/bio.4661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/02/2023] [Accepted: 12/05/2023] [Indexed: 01/31/2024]
Abstract
The suggested study adheres to a particular protocol to ensure that the process is environmentally friendly and sustainable. It is worth mentioning that several tools have been adopted as prospective measures of the method greenness. Fortunately, the established analytical method is identified as white by the white analytical chemistry (WAC) concept, which uses the red/ green/blue color scheme (RGB 12 tool) to combine ecological and functional factors for the first time in studying of the cited drug. Amlodipine (AMD), a cardiovascular treating agent, belongs to the dihydropyridine class of oral calcium channel-blocking agents. This article presents a novel, simple, green, one-pot-processed, fast, and ultrasensitive fluorimetric approach for monitoring and assessment of AMD using molecular-size-dependent fluorescence augmentation of the light scattering-driven signal of eosin, a biological stain at a wavelength of 415 nm. This enhancement was directly proportional to the size of the produced complex. The linearity range was from 30 to 900 ng mL-1 , with corresponding sensitivity limits (detection and quantitation levels) of 9.2 and 28 ng mL-1 , respectively. The planned approach was also successfully used to track AMD content in bulk, dosage forms, and bio-fluids (human plasma and urine). The developed method's eco-friendliness was established by different eco-rating metric tools.
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Affiliation(s)
- Abdulmalik M Alqarni
- Department of Pharmaceutical Chemistry, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ahmed M Haredy
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Merit University, New Sohag, Egypt
| | - Kamal S Abdelrahman
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, Egypt
| | - Osama M Soltan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, Egypt
| | - Mohamed A A Abdel-Aal
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, Egypt
| | - Mohammad A Alrofaidi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Baha University, Al-Baha, Saudi Arabia
| | - Abdulwahab Aalamri
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Hail, Hail, Saudi Arabia
| | - Mhdia Elhadi Osman
- Department of Clinical Pharmacy, Pharmacy College, University of Hail, Hail, Saudi Arabia
| | - Ahmed Awadh Alamri
- Medical Services, Ministry of Interior-Security Forces Hospital in Najran, Najran, Saudi Arabia
| | - Ahmed Abdulhafez Hamad
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, Egypt
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Li J, Shi J, Liang A, Jiang Z. Highly catalysis amplification of MOF Nd-loaded nanogold combined with specific aptamer SERS/RRS assay of trace glyphosate. Analyst 2022; 147:2369-2377. [PMID: 35535968 DOI: 10.1039/d2an00549b] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
A neodymium metal-organic framework (MOFNd) was prepared using 1H-pyrazole-3,5-dicarboxylic acid (H3pdc) and 2-pyrazinecarboxylic acid as ligands. Through the addition of HAuCl4 as a precursor and NaBH4 as a reducing agent, a new MOFNd-loaded nanogold (AuNPs) (Au@MOFNd) nanosol with good stability and high catalytic activity was conveniently prepared via a solvothermal-reduction method and characterized. It was found that the indicator reaction of reducing HAuCl4 by Na2SO3 to generate AuNPs was slow. Au@MOFNd strongly catalyzes this nanoreaction, and the produced AuNPs exhibit a strong resonance Rayleigh scattering (RRS) peak at 370 nm, and a strong surface-enhanced Raman scattering (SERS) peak at 1617 cm-1 with the addition of the molecular probe Victoria blue 4R (VB4r). A novel SERS/RRS di-mode quantitative analysis method for glyphosate (GLY) was established by coupling this new Au@MOFNd catalytic indicator reaction with the aptamer (Apt) reaction of GLY, with SERS and RRS detection limits of 0.02 nM and 0.3 nM, respectively. It has been applied to the analysis of soil samples with a recovery rate of 93.0%-106.5% and precision of 2.2%-4.1%, and the results were satisfactory.
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Affiliation(s)
- Jingjing Li
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China
| | - Jinling Shi
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China
| | - Aihui Liang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China
| | - Zhiliang Jiang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, China
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5
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Al-Onazi WA, Abdel-Lateef MA. Catalytic oxidation of O-phenylenediamine by silver nanoparticles for resonance Rayleigh scattering detection of mercury (II) in water samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 264:120258. [PMID: 34384994 DOI: 10.1016/j.saa.2021.120258] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
In this study, a facile nanoparticle catalytic sensor for resonance Rayleigh scattering quantification of mercury (II) ion was developed. The developed approach is relied on the selective inhibition of the peroxidase-like activity of polyvinylpyrrolidone-stabilized silver nanoparticles (PVP-Ag-NPs) by mercury (II) ions. The synthesized PVP-Ag-NPs oxidize the aqueous solution of O-Phenylenediamine (colorless) to 2,3-phenazinediamine (bright yellow) and their resonance Rayleigh scattering (RRS) activity was completely suppressed. When mercury (II) was introduced, the RRS activity of PVP-Ag-NPs was turned on combined with a reduction of the intensity of the yellow color. The enhancement in the RRS intensity was related to the concentration of mercury (II) in the linear range of 10-2000 nM. The smaller size (4.5 nm), the large surface area and the uniform size (PDI = 0.379) of the synthesized PVP-Ag-NPs offered a higher chance for interaction between mercury (II) and PVP-Ag-NPs with the advantages of high sensitivity (LOD = 4 nM) and excellent selectivity for mercury (II) detection over several metals and anions.
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Affiliation(s)
- Wedad A Al-Onazi
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia
| | - Mohamed A Abdel-Lateef
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt.
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6
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Guo Z, Chen P, Yosri N, Chen Q, Elseedi HR, Zou X, Yang H. Detection of Heavy Metals in Food and Agricultural Products by Surface-enhanced Raman Spectroscopy. FOOD REVIEWS INTERNATIONAL 2021. [DOI: 10.1080/87559129.2021.1934005] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhiming Guo
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Ping Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Nermeen Yosri
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Quansheng Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Hesham R. Elseedi
- Pharmacognosy Division, Department of Medicinal Chemistry, Uppsala University, Biomedical Centre, Uppsala, Sweden
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China
| | - Xiaobo Zou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China
| | - Hongshun Yang
- Department of Food Science & Technology, National University of Singapore, Singapore, Singapore
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7
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Li J, Wang S, Kang W, Li N, Guo F, Chang H, Wei W. Multifunctional gold nanoparticle based selective detection of esophageal squamous cell carcinoma cells using resonance Rayleigh scattering assay. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105905] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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8
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Ouyang H, Liang A, Jiang Z. Fullerol Nanocatalysis and Trimodal Surface Plasmon Resonance for the Determination of Isocarbophos. Front Chem 2020; 8:673. [PMID: 32923424 PMCID: PMC7456962 DOI: 10.3389/fchem.2020.00673] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 06/29/2020] [Indexed: 11/13/2022] Open
Abstract
Fullerol (C60OH) has been shown to catalyze the trisodium citrate (TSC)-silver nitrate reaction to generate Ag nanoparticles (AgNPs). These AgNPs exhibit significant nanoplasmic surface-enhanced Raman scattering (SERS), resonance Rayleigh scattering (RRS), and absorption (Abs). When an aptamer (Apt) adsorbs on the C60OH surface, catalysis is inhibited, and the intensities of SERS, RRS, and Abs decrease. In the presence of isocarbophos (IPS), Apt forms a stable complex (Apt-IPS) and releases C60OH. As a result, SERS, RRS, and Abs intensities increase with increasing IPS concentration. Accordingly, a new SERS, RRS, and Abs trimodal method using Apt-labeled fullerol was established for the determination of IPS. Of the three spectral methods, SERS was the most sensitive, while the Abs method was the most cost-effective.
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Affiliation(s)
- Huixiang Ouyang
- Guangxi Colleges and Universities Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, Baise, China.,Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin, China
| | - Aihui Liang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin, China
| | - Zhiliang Jiang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin, China
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9
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Li D, Yao D, Li C, Luo Y, Liang A, Wen G, Jiang Z. Nanosol SERS quantitative analytical method: A review. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115885] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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10
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LI N, LIU SG, HE YQ, MAI X. Resonance Rayleigh Scattering as a Tool for Isoelectric Point Monitoring and Iron(III) Cation Determination. ANAL SCI 2019; 35:1149-1153. [DOI: 10.2116/analsci.19p177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Na LI
- School of Pharmaceutical Science, Nanchang University
| | - Shi Gang LIU
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University
| | - Yong Qin HE
- School of Pharmaceutical Science, Nanchang University
| | - Xi MAI
- School of Pharmaceutical Science, Nanchang University
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11
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Gold and silver nanoparticles in resonance Rayleigh scattering techniques for chemical sensing and biosensing: a review. Mikrochim Acta 2019; 186:667. [PMID: 31485856 DOI: 10.1007/s00604-019-3755-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 08/10/2019] [Indexed: 01/08/2023]
Abstract
This review (with 116 refs.) summarizes the state of the art in resonance Rayleigh scattering (RRS)-based analytical methods. Following an introduction into the fundamentals of RRS and on the preparation of metal nanoparticles, a first large section covers RRS detection methods based on the use of gold nanoparticles, with subsections on proteins (albumin, bovine serum albumin and ovalbumin, glycoproteins, folate receptors, iron binding-proteins, G-proteins-coupled receptors, transmembrane proteins, epidermal growth factor receptors), on pesticides, saccharides, vitamins, heavy metal ions (such as mercury, silver, chromium), and on cationic dyes. This is followed by a section on RRS methods based on the use of silver nanoparticles, with subsections on the detection of nucleic acids and insecticides. Several Tables are presented where an RRS method is compared to the performance of other methods. A concluding section summarizes the current status, addresses current challenges, and gives an outlook on potential future trends. Graphical Abstract Change in the resonance Rayleigh scattering (RRS) intensity when mixing the nanoparticles with the specific analyte.
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12
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A Sensitive Resonance Rayleigh Scattering Method for Na + Based on Graphene Oxide Nanoribbon Catalysis. Int J Anal Chem 2018; 2018:4017519. [PMID: 30627166 PMCID: PMC6304511 DOI: 10.1155/2018/4017519] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 11/18/2018] [Indexed: 12/21/2022] Open
Abstract
The gold nanoparticle reaction of HAuCl4-H2O2 was very slow under 60°C, and the as-prepared graphene oxide nanoribbons (GONRs) exhibited strong catalysis of the reaction to form gold nanoparticles (AuNP) that appeared a resonance Rayleigh scattering (RRS) peak at 550 nm. Upon addition of potassium pyroantimonate (PA) ligand, it was adsorbed on the GONRs surface to inhibit the catalysis to cause the RRS peak decreasing. When the analyte of Na+ was added, the coordination reaction between PA and Na+ took place to form the stable complexes of [Na2(PA)] to release free GONRs catalyst that resulted in the RRS peak increasing linearly. Accordingly, a new and sensitive RRS method for Na+ was established, with a linear range of 0.69-25.8 nmol/L and a detection limit of 0.35 nmol/L Na+.
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Li J, Yang Y, Zhang X, Zhang B, Chang H, Wei W. Resonance Rayleigh scattering assay for EGFR using antibody immobilized gold nanoparticles. LUMINESCENCE 2018; 33:1326-1332. [PMID: 30264501 DOI: 10.1002/bio.3550] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 08/12/2018] [Accepted: 08/20/2018] [Indexed: 12/17/2022]
Abstract
A highly selectivity determination of epidermal growth factor receptor (EGFR) has been described in the article. Antibody immobilized cysteamine (Cys) functionalized gold nanoparticles (AuNP) were proposed as immunosensors, and resonance Rayleigh scattering (RRS) was used for detection. First, Cys stabilized AuNPs (Cys-AuNP) were prepared by the reduction of chloroauric acid with sodium borohydride in the presence of Cys. Further, anti-EGFR antibody (Cetuximab, C225) was covalently linked to the Cys-AuNP by carbodiimide-mediated amidation protocol to yield the C225-AuNP immunoprobe. The prepared conjugations were characterized by ultraviolet-visible (UV-vis) spectroscopy, transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) and sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE). Based on the specific binding of C225 to EGFR, an RRS method was established to determine the concentration of EGFR. Under the optimal conditions, the concentration of EGFR was related to the intensity of RRS in the range 30-130 ng ml-1 with a low detection limit of 4.0 ng ml-1 . Meanwhile, the proposed immunosensor exhibited excellent selectivity and anti-interference property. The method was applied to the determination of EGFR in human serum and cancer cell lysate samples with satisfactory results.
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Affiliation(s)
- Junbo Li
- Department of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, P.R. China.,Pharmaceutical Department, Changzhi Medical College, Changzhi, P.R. China
| | - Yanqiang Yang
- Changzhi Entry-exit Inspection and Quarantine Bureau, Changzhi, P.R. China
| | - Xinxin Zhang
- Changzhi Entry-exit Inspection and Quarantine Bureau, Changzhi, P.R. China
| | - Bing Zhang
- Department of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, P.R. China
| | - Honghong Chang
- Department of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, P.R. China
| | - Wenlong Wei
- Department of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, P.R. China
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14
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Preparation of Highly Catalytic N-Doped Carbon Dots and Their Application in SERS Sulfate Sensing. MATERIALS 2018; 11:ma11091655. [PMID: 30205487 PMCID: PMC6165424 DOI: 10.3390/ma11091655] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/03/2018] [Accepted: 09/03/2018] [Indexed: 11/25/2022]
Abstract
Carbon dots (CD) have excellent stability and fluorescence activity, and have been widely used in fluorescence methods. However, there are no reports about using CD as catalysts to amplify SERS signals to detect trace sulfate. Thus, preparing CD catalysts and their application in SERS sulfate-sensing are significant. In this article, highly catalytic N-doped carbon dots (CDN) were prepared by a hydrothermal procedure. CDN exhibited strong catalysis of the gold nanoparticle (AuNP) reaction between HAuCl4 and H2O2. Vitoria blue 4R (VB4R) has a strong SERS peak at 1614 cm−1 in the formed AuNP sol substrate. When Ba2+ ions were added, they were adsorbed on a CDN surface to inhibit the CDN catalytic activity that caused the SERS peak decreasing. Upon addition of analyte SO42−, a reaction with Ba2+ produced stable BaSO4 precipitate and CDN, and its catalysis recovered to cause SERS intensity increasing linearly. Thus, an SERS method was developed for the detection of 0.02–1.7 μmol/L SO42−, with a detection limit of 0.007 μmol/L.
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15
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Yang PC, Wu T, Lin YW. Label-Free Colorimetric Detection of Mercury (II) Ions Based on Gold Nanocatalysis. SENSORS (BASEL, SWITZERLAND) 2018; 18:E2807. [PMID: 30149653 PMCID: PMC6163656 DOI: 10.3390/s18092807] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 08/17/2018] [Accepted: 08/22/2018] [Indexed: 12/01/2022]
Abstract
Herein, a label-free colorimetric nanosensor for Hg(II) is developed utilizing the hindering effect of Hg(II) on the kinetic aspect of gold nanoparticle (AuNPs) growth on the surface of gold nanostars (AuNSs). H-AuNS probes are synthesized and modified by 2-[4-(2-hydroxyethel) piperazine-1-yl] ethanesulfonic acid (HEPES). After the formulation of the reagents and testing conditions are optimized, HEPES-capped AuNSs (H-AuNSs) demonstrates good selectivity and sensitivity towards Hg(II) determination. A H-AuNS probe, in the presence of HCl/Au(III)/H₂O₂, is capable of detecting a Hg(II) concentration range of 1.0 nM⁻100 µM, with a detection limit of 0.7 nM, at a signal-to-noise ratio of 3.0, and a visual detection limit of 10 nM with naked eyes. For practicality, the H-AuNS probe is evaluated by measuring Hg(II) in the environmental water matrices (lake water and seawater) by a standard addition and recovery study. The detection limits for environmental samples are found to be higher than the lab samples, but they are still within the maximum allowable Hg concentration in drinking water (10 nM) set by the US Environmental Protection Agency (EPA). To create a unique nanosensor, the competitive interaction between Hg(II) and Pt(IV) toward the H-AuNSs probe is developed into a logic gate, improving the specificity in the detection of Hg(II) ions in water samples.
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Affiliation(s)
- Pei-Chia Yang
- Department of Chemistry, National Changhua University of Education, 1, Jin-De Road, Changhua City 50007, Taiwan.
| | - Tsunghsueh Wu
- Department of Chemistry, University of Wisconsin-Platteville, 1 University Plaza, Platteville, WI 53818-3099, USA.
| | - Yang-Wei Lin
- Department of Chemistry, National Changhua University of Education, 1, Jin-De Road, Changhua City 50007, Taiwan.
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16
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Li C, Wang X, Liang A, Luo Y, Wen G, Jiang Z. A simple gold nanoplasmonic SERS method for trace Hg 2+ based on aptamer-regulating graphene oxide catalysis. LUMINESCENCE 2018; 33:1113-1121. [PMID: 30014561 DOI: 10.1002/bio.3517] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 04/13/2018] [Accepted: 05/19/2018] [Indexed: 12/14/2022]
Abstract
The as-prepared graphene oxide (GO) exhibited a strong catalytic effect on reduction of HAuCl4 by trisodium citrate to form gold nanoplasmons (AuNPs) with a strong surface-enhanced Raman scattering (SERS) effect at 1615 cm-1 in the presence of molecular probe Victoria blue 4R (VB4r). SERS intensity increased with nanocatalyst GO concentration due to the formation of more AuNP substrates. The aptamer (Apt) of Hg2+ can bind to GO to form Apt-GO complexes, which can strongly inhibit nanocatalysis. When target Hg2+ is present, the formed stable Hg2+ -Apt complexes are separated from the GO surface, which leads to GO catalysis recovery. The enhanced SERS signal was linear to Hg2+ concentration in the range 0.25-10 nmol/L, with a detection limit of 0.08 nmol/L Hg2+ . Thus, a new gold nanoplasmon molecular spectral analysis platform was established for detecting Hg2+ , based on Apt regulation of GO nanocatalysis.
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Affiliation(s)
- Chongning Li
- Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Guilin, China.,School of Food and Bioengineering, Hezhou University, Hezhou, China
| | - Xiaoliang Wang
- Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Guilin, China
| | - Aihui Liang
- Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Guilin, China
| | - Yanghe Luo
- Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Guilin, China.,School of Food and Bioengineering, Hezhou University, Hezhou, China
| | - Guiqing Wen
- Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Guilin, China
| | - Zhiliang Jiang
- Ministry of Education, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Guilin, China
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