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Chen J, Tian R, Li D, Sun X, Li H, Zhang Y. Ratiometric fluorescence detection of Hg 2+ based on gold nanocluster/carbon quantum dots nanohybrids. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:884-891. [PMID: 38240525 DOI: 10.1039/d3ay01966g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Ratiometric fluorescence sensing methods are widely used in analysis and detection due to their high sensitivity and stability. In this work, a ratiometric fluorescence method for sensitive detection of Hg2+ was established using a gold nanoclusters/carbon quantum dots (AuNCs/CQDs) nanohybrid probe. The AuNCs/CQDs nanohybrids probe were simply constructed by mixing blue-light-emitting gold nanoclusters (AuNCs) with an orange-emissive carbon quantum dots (CQDs). The probe had two fluorescence emission peaks at 434 nm and 561 nm when the excitation wavelength was 375 nm. With the addition of Hg2+, the fluorescence at 434 nm decreased and the fluorescence at 561 nm remained unchanged; the fluorescence intensity ratio Δ(F434/F561) and Hg2+ concentration have a good linear relationship in the range of 8.32 × 10-7 to 7.69 × 10-5 mol L-1, and the limit of detection (LOD) is 3.58 × 10-7 mol L-1. The method was applied in the detection of Hg2+ in cosmetics and wastewater, and has potential applications for detecting Hg2+ in other samples.
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Affiliation(s)
- Junyu Chen
- Collage of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shannxi 716000, PR China.
| | - Rui Tian
- Collage of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shannxi 716000, PR China.
| | - Duo Li
- Collage of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shannxi 716000, PR China.
| | - Xuehua Sun
- Collage of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shannxi 716000, PR China.
| | - Haoyu Li
- Collage of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shannxi 716000, PR China.
| | - Yuecheng Zhang
- Collage of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shannxi 716000, PR China.
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Shahrashoob M, Hosseinkhani S, Jafary H, Hosseini M, Molaabasi F. Dual-emissive phenylalanine dehydrogenase-templated gold nanoclusters as a new highly sensitive label-free ratiometric fluorescent probe: heavy metal ions and thiols measurement with live-cell imaging. RSC Adv 2023; 13:21655-21666. [PMID: 37476045 PMCID: PMC10354591 DOI: 10.1039/d3ra03179a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 06/20/2023] [Indexed: 07/22/2023] Open
Abstract
Phenylalanine dehydrogenase (PheDH) has been proposed as an ideal protein scaffold for the one-step and green synthesis of highly efficient multifunctional gold nanoclusters. The PheDH-stabilized fluorescent gold nanoclusters (PheDH-AuNCs) with dual emission/single excitation exhibited excellent and long-term stability, high water solubility, large Stokes shift and intense photoluminescence. Selectivity studies demonstrated that the red fluorescence emission intensity of PheDH-AuNCs was obviously decreased in less than 10 min by the addition of mercury, copper, cysteine or glutathione under the single excitation at 360 nm, without significant change in the blue emission of the PheDH-AuNCs. Therefore, the as-prepared PheDH-AuNCs as a new excellent fluorescent probe were successfully employed to develop a simple, rapid, low cost, label- and surface modification-free nanoplatform for the ultrasensitive and selective detection of Hg2+, Cu2+, Cys and GSH through a ratiometric fluorescence system with wide linear ranges and detection limits of 1.6, 2.4, 160 and 350 nM, respectively which were lower than previous reports. In addition, the results showed that PheDH-AuNCs can be used for the detection of toxic heavy metal ions and small biomarker thiols in biological and aqueous samples with acceptable recoveries. Interestingly, PheDH-AuNCs also displayed a promising potential for live-cell imaging due to their low toxicity and great chemical- and photo-stability.
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Affiliation(s)
- Mahsa Shahrashoob
- Department of Biology, Science and Research Branch, Islamic Azad University Tehran Iran
| | - Saman Hosseinkhani
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University Tehran Iran
| | - Hanieh Jafary
- Department of Biology, Science and Research Branch, Islamic Azad University Tehran Iran
| | - Morteza Hosseini
- Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran Tehran Iran
| | - Fatemeh Molaabasi
- Department of Interdisciplinary Technologies, Breast Cancer Research Center, Biomaterials and Tissue Engineering Research Group, Motamed Cancer Institute, ACECR Tehran Iran
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Ayodhya D. Recent progress on detection of bivalent, trivalent, and hexavalent toxic heavy metal ions in water using metallic nanoparticles: A review. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023] Open
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Wang L, Liu L, Liu Y, Wang F, Zhou X. Antimicrobial performance of novel glutathione-conjugated silver nanoclusters (GSH@AgNCs) against Escherichia coli and Staphylococcus aureus by membrane-damage and biofilm-inhibition mechanisms. Food Res Int 2022; 160:111680. [DOI: 10.1016/j.foodres.2022.111680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 07/06/2022] [Accepted: 07/11/2022] [Indexed: 11/16/2022]
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Prakash S, Mishra AK. Rapid and sensitive naked eye detection of faecal pigments using their enhanced solid-state green fluorescence on a zinc acetate substrate. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:2907-2912. [PMID: 35861373 DOI: 10.1039/d2ay00878e] [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
The identification of trace faecal pigments in real-time and on-site detection remains a challenge for water quality monitoring. Herein, a simple, low-cost and rapid fluorescence-based analytical method has been developed in a solid matrix for faecal pigments like stercobilin and urobilin detection. This was made possible due to significant enhancement of green solid-state fluorescence (520 nm) by zinc(II) complexation with faecal pigments embedded in the surface of zinc acetate crystals. It enables naked-eye detection of these pigments even at a 10 μM level when excited with 365 nm blue-UV. It was demonstrated that easily available white cellulose paper strips or TLC silica plates coated with zinc acetate can be used as substrates. A photophysical study of solid-state faecal pigments-zinc(II) complexes suggests that green fluorescence enhancement results from the complexation, which can be attributed to the substantial decrease of the non-radiative decay rate (knr) as well as more efficient use of excitation light. The observation of reduced interference of humic acid fluorescence makes faecal pigment detection more efficient by this proposed method.
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Affiliation(s)
- Swayam Prakash
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
| | - Ashok Kumar Mishra
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-600036, India.
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Wu Z, Dai C, Wang Y, Ma L, Zang G, Liu Q, Zhu S. A novel sensor for visual and selective detection of Hg 2+ based on functionalized doped quantum dots. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:2368-2375. [PMID: 35648434 DOI: 10.1039/d2ay00297c] [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
In this paper, a novel analytical platform for the visual, sensitive and reliable analysis of mercury ions (Hg2+) is fabricated based on functionalized doped quantum dots. We synthesized a new specific nano-material, zinc dithiothreitol combined with graphene quantum dots (ZnNCs-NGQDs), by a simple and convenient method which, as an efficient luminophore, was then applied to construct an electrochemiluminescence (ECL) system for the first time. Under optimized conditions, the ECL sensor showed an excellent response for Hg2+ in the linear range of 1.0 mM to 10 pM, with a low detection limit of 3 pM. Moreover, the proposed method demonstrated satisfactory selectivity, stability and acceptable reproducibility for the detection of Hg2+. The recovery of tap water and lake water samples ranged from 96% to 105%, indicating the potential applicability of the proposed method for monitoring environmental water samples. Meanwhile, visual attempts for mercury ion detection by using doped quantum dots have also obtained satisfactory results. Importantly, our research revealed a viable method for improving the sensitivity and convenience of target studies in sensing fields derived from functional material design.
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Affiliation(s)
- Zhipeng Wu
- Laboratory of Pharmacy and Chemistry, Laboratory of Tissue and Cell Biology, Lab Teaching & Management Centre, Chongqing Medical University, Chongqing 401331, China.
| | - Chenglin Dai
- Laboratory of Pharmacy and Chemistry, Laboratory of Tissue and Cell Biology, Lab Teaching & Management Centre, Chongqing Medical University, Chongqing 401331, China.
| | - Yiwu Wang
- Laboratory of Pharmacy and Chemistry, Laboratory of Tissue and Cell Biology, Lab Teaching & Management Centre, Chongqing Medical University, Chongqing 401331, China.
| | - Lianju Ma
- Laboratory of Pharmacy and Chemistry, Laboratory of Tissue and Cell Biology, Lab Teaching & Management Centre, Chongqing Medical University, Chongqing 401331, China.
| | - Guangchao Zang
- Laboratory of Pharmacy and Chemistry, Laboratory of Tissue and Cell Biology, Lab Teaching & Management Centre, Chongqing Medical University, Chongqing 401331, China.
| | - Qian Liu
- Laboratory of Pharmacy and Chemistry, Laboratory of Tissue and Cell Biology, Lab Teaching & Management Centre, Chongqing Medical University, Chongqing 401331, China.
| | - Shu Zhu
- Laboratory of Pharmacy and Chemistry, Laboratory of Tissue and Cell Biology, Lab Teaching & Management Centre, Chongqing Medical University, Chongqing 401331, China.
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Panthi G, Park M. Synthesis of metal nanoclusters and their application in Hg 2+ ions detection: A review. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127565. [PMID: 34736203 DOI: 10.1016/j.jhazmat.2021.127565] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/15/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Mercuric (Hg2+) ions released from human activities, natural phenomena, and industrial sources are regarded as the global pollutant of world's water. Hg2+ ions contaminated water has several adverse effects on human health and the environment even at low concentrations. Therefore, rapid and cost-effective method is urgently required for the detection of Hg2+ ions in water. Although, the current analytical methods applied for the detection of Hg2+ ions provide low detection limit, they are time consuming, require expensive equipment, and are not suitable for in-situ analysis. Metal nanoclusters (MNCs) consisting of several to ten metal atoms are important transition missing between single atoms and plasmonic metal nanoparticles. In addition, sub-nanometer sized MNCs possess unique electronic structures and the subsequent unusual optical, physical, and chemical properties. Because of these novel properties, MNCs as a promising material have attracted considerable attention for the construction of selective and sensitive sensors to monitor water quality. Hence this review is focused on recent advances on synthesis strategies, and optical and chemical properties of various MNCs including their applications to develop optical assay for Hg2+ ions in aqueous solutions.
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Affiliation(s)
- Gopal Panthi
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju, Chonbuk 55338, Republic of Korea.
| | - Mira Park
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju, Chonbuk 55338, Republic of Korea; Woosuk Institute of Smart Convergence Life Care (WSCLC), Woosuk University, Wanju, Chonbuk 55338, Republic of Korea.
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Rahimi F, Anbia M. Nitrogen-rich silicon quantum dots: facile synthesis and application as a fluorescent "on-off-on" probe for sensitive detection of Hg 2+ and cyanide ions. LUMINESCENCE 2022; 37:598-609. [PMID: 35037385 DOI: 10.1002/bio.4195] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/06/2022] [Accepted: 01/07/2022] [Indexed: 11/07/2022]
Abstract
The sensitive and reliable detection of Hg2+ and CN- as harsh environmental contaminants are of great importance. In view of this, a novel "on-off-on" fluorescent probe based on nitrogen-rich silicon quantum dots (NR-SiQDs) has been designed for sensitive detecting Hg2+ and CN- ions in aqueous media. NR-SiQDs were synthesized by a facile, one-step, and environment friendly procedure in the presence of 3-aminopropyl trimethoxysilane (APTMS) and ascorbic acid (AA) as precursors, with L-asparagine as a nitrogen source for surface modification. The NR-SiQDs exhibited strong fluorescence emission at 450 nm with 42.34% quantum yield, satisfactory salt tolerance, and superior photo- and pH-stability. The fluorescence emission was effectively quenched by Hg2+ (turn off) due to the formation of a non-fluorescent stable NR-SiQDs/Hg2+ complex while after the addition of cyanide ions (CN- ), Hg2+ ions can be leached from the surface of the NR-SiQDs and the fluorescence emission intensity of the quenched NR-SiQDs fully recovered (turn on) due to the formation of highly stable [Hg (CN)4 ]2- species. After optimizing the response conditions, the obtained limits of detection were found to be 53 nM and 0.46 μM for Hg2+ and CN- , respectively. Finally, the NR-SiQDs based fluorescence probe was utilized to detect Hg2+ and CN- ions in water samples and satisfactory results were obtained, suggesting its potential application for environmental monitoring.
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Affiliation(s)
- Fatemeh Rahimi
- Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Narmak, Tehran16846, Iran
| | - Mansoor Anbia
- Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology, Narmak, Tehran16846, Iran
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A Highly Sensitive Electrochemical Sensor Based on Electrocatalytic Reduction Effect of Cu2+ on Trace Determination of Malathion in Soil and Other Complex Matrices. INTERNATIONAL JOURNAL OF ELECTROCHEMISTRY 2021. [DOI: 10.1155/2021/8110364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The current strategy reports a highly sensitive and selective square wave-cathodic stripping voltammetric protocol for malathion determination. The established method was based on the controlled adsorptive accumulation of malathion in the presence of Cu2+ ions in an aqueous solution of pH 2 onto the hanging mercury dropping electrode (HMDE) and measuring the resulting cathodic peak current of the adsorbed species at −0.42 V versus Ag/AgCl electrode. The low limits of detection (LOD) and quantification (LOQ) of malathion of the assay were estimated to be 3.1 × 10−10 and 1.03 × 10−9 M with a linear dynamic range of 1.03×10−9 – 2.0 × 10−7 M, respectively. The method was satisfactorily applied and validated for malathion determination in environmental samples. The experimental Student texp and Fexp values did not exceed the tabulated ttab (2.78) and Ftab (6.39) at 95% (P = 0.05) confidence (n = 5), confirming the precision and independence on the matrix. The developed sensing platform for the detection of malathion shows superior performance to conventional electrochemical methods. The proposed sensor offered simple, economical, reproducible, and applicable approach for the determination of malathion in environmental samples.
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