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Wang X, Cong Q, Feng C, Sun Z, Cai Z, Fan C, Pei L. Terbium Vanadate Nanowires-Based Electrochemical Sensors for Mercury Ions. Appl Biochem Biotechnol 2024:10.1007/s12010-024-04882-x. [PMID: 38376741 DOI: 10.1007/s12010-024-04882-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/12/2024] [Indexed: 02/21/2024]
Abstract
Terbium vanadate nanowires were synthesized via a facile chemical approach using sodium vanadate and terbium chloride. Morphology, structure, composition, and electrochemical characteristics of the terbium vanadate nanowires were investigated by different techniques. Terbium vanadate nanowires with single crystalline tetragonal TbVO4 phase possess smooth surface and flat tips. The length of the nanowires is longer than 5 μm, and diameter is 40-100 nm. Terbium vanadate nanowires modified electrode was used for trace-level mercury ions (Hg2+) detection. One well-defined stripping peak exists at - 0.34 V at the terbium vanadate nanowires modified electrode in 0.1 mM Hg2+ solution. Buffer solution pH value, deposition time, deposition potential, and standing time are pH = 1, 150 s, - 1.5 V, and 60 s, respectively. Detection limit for Hg2+ detection is 0.18 nM, and linear range is 0.01-100 μM. The proposed terbium vanadate nanowires modified electrode exhibits significant selectivity, stability, and reproducibility toward Hg2+. The usefulness of the developed sensor based on the terbium vanadate nanowires modified electrode was verified by Hg2+ detection in real samples.
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Affiliation(s)
- Xiaoyu Wang
- School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui, 243002, People's Republic of China
| | - Qianming Cong
- School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui, 243002, People's Republic of China
| | - Chenxu Feng
- School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui, 243002, People's Republic of China
| | - Zizhan Sun
- School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui, 243002, People's Republic of China
| | - Zhengyu Cai
- School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui, 243002, People's Republic of China.
| | - Chuangang Fan
- School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui, 243002, People's Republic of China
| | - Lizhai Pei
- School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan, Anhui, 243002, People's Republic of China.
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Solid phase extraction studies on cellulose based chelating resin for separation, pre-concentration and estimation of Cu2+and Ni2+. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100481] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Ali R, Ali IA, Messaoudi S, Alminderej FM, Saleh SM. An effective optical chemosensor film for selective detection of mercury ions. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116122] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Garau A, Aragoni MC, Arca M, Bencini A, Blake AJ, Caltagirone C, Giorgi C, Lippolis V, Scorciapino MA. Aza- and Mixed Thia/Aza-Macrocyclic Receptors with Quinoline-Bearing Pendant Arms for Optical Discrimination of Zinc(II) or Cadmium(II) Ions. Chempluschem 2020; 85:1789-1799. [PMID: 32808469 DOI: 10.1002/cplu.202000444] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/23/2020] [Indexed: 12/21/2022]
Abstract
The synthesis and coordination properties of two fluorescent chemosensors, featuring [9]aneN3 (1,4,7-triazacyclononane; L1) and [12]aneNS3 (1-aza-4,7,10-trithiacyclododecane; L2) as receptor units, and a quinoline pendant arm with an amide group as a functional group spacer are described. The optical responses of L1 and L2 in the presence of several metal ions were analysed in MeCN/H2 O (1 : 4 v/v) solutions. A selective chelation enhancement of fluorescence (CHEF) effect was observed in the presence of Zn2+ in the case of L1, and in the presence of Cd2+ in the case of L2, following the formation of a 1 : 1 and a 1 : 2 metal/ligand complex, respectively, which was also confirmed by potentiometric measurements. 1 H and 13 C NMR measurements in CD3 CN/CDCl3 in combination with molecular mechanics calculations show that for both complexes of L1 and L2 with Zn2+ and Cd2+ , respectively, the coordination of the carbonyl group from the pendant arm could be the origin of the observed optical selectivity.
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Affiliation(s)
- Alessandra Garau
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042, Monserrato (CA), Italy
| | - M Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042, Monserrato (CA), Italy
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042, Monserrato (CA), Italy
| | - Andrea Bencini
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Firenze, Italy
| | - Alexander J Blake
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, Nottingham, United Kingdom
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042, Monserrato (CA), Italy
| | - Claudia Giorgi
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, Via della Lastruccia 3, I-50019 Sesto Fiorentino, Firenze, Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042, Monserrato (CA), Italy
| | - Mariano Andrea Scorciapino
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042, Monserrato (CA), Italy
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5
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Conti L, Giorgi C, Valtancoli B, Paoli P, Rossi P, Marchionni A, Faggi E, Bencini A. Switching on the Fluorescence Emission of Polypyridine Ligands by Simultaneous Zinc(II) Binding and Protonation. Chempluschem 2020; 85:659-671. [PMID: 32237220 DOI: 10.1002/cplu.201900752] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 03/11/2020] [Indexed: 11/07/2022]
Abstract
The synthesis and characterization of the two new open-chain ligands 1,15-bis-[6-(2,2'-bipyridyl)]-2,5,8,11,14-pentaaza-octadecane (L1) and 1,15-bis-[2-(1,10-phenanthroline)-9-methyl]-2,5,8,11,14-pentaazaoctadecane (L2), both featuring a tetraethylenpentaamine chain linking via methylene bridges the 6 and 2 positions of two identical 2,2'-bipyridyl (bpy) and 9-methyl-1,10-phenanthroline (9-methyl-phen) moieties respectively, are reported. Their protonation and binding ability for Cu2+ , Zn2+ , Cd2+ and Pb2+ have been studied by coupling potentiometric titrations with UV-vis absorption and fluorescence emission measurements in water. L1 and L2 afford stable mono- and dinuclear complexes, in which the metal ion is bound by a single bpy or 9-methyl-phen unit and the amine groups on the aliphatic chain. However, L1 displays a greater binding ability for Cu2+ and Zn2+ with respect to L2, the stability constants of the [ML1]2+ complexes being 21.8 (Cu2+ ) and 19.4 (Zn2+ ) log units vs 20.34 and 16.8 log. units for the corresponding L2 species. Among all the metal ions tested, only the Zn2+ complex with L2 features an enhanced fluorescence emission at neutral pH, thanks to the simultaneous binding of one Zn2+ ion and H+ ion(s), that inhibits any possible photoinduced electron transfer (PET) process from the amine donors to the excited phen moiety. Binding of a second metal switches off the emission again.
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Affiliation(s)
- Luca Conti
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy
| | - Claudia Giorgi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy
| | - Barbara Valtancoli
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy
| | - Paola Paoli
- Department of Industrial Engineering, University of Florence, Via S. Marta 3, Florence, 50139, Italy
| | - Patrizia Rossi
- Department of Industrial Engineering, University of Florence, Via S. Marta 3, Florence, 50139, Italy
| | - Andrea Marchionni
- Istituto di Chimica dei Composti OrganoMetallici (ICCOM_CNR), Via Madonna del Piano 10, 50019, Sesto Fiorentino (FI), Italy
| | - Enrico Faggi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy
| | - Andrea Bencini
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019, Sesto Fiorentino, Italy
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Wang X, Wang H, Guo L, Chen G, Kong R, Qu F, Xia L. Colorimetric detection of Hg(ii) based on the gold amalgam-triggered reductase mimetic activity in aqueous solution by employing AuNP@MOF nanoparticles. Analyst 2020; 145:1362-1367. [PMID: 32040108 DOI: 10.1039/c9an02615k] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Although the potential of gold amalgam as a nanoenzyme has been demonstrated, its practical utility has been limited by its low catalytic activity caused by the aggregation of Au nanoparticles (Au NPs). Thus, there is a need to further engineer Au NPs to prevent aggregation and then to achieve higher enzyme activities for the detection of Hg2+ ions. Metal organic frameworks (MOFs), as one kind of promising material, have attracted particular attention due to their unique characteristics of uniform cavities and very high porosity. Herein, a hybrid material of Au nanoparticles and a MOF (AuNP@MOF), constructed by immobilization of Au NPs uniformly on the cavity surface of an iron-5,10,15,20-tetrakis (4-carboxyl)-21H,23H-porphyrin-based MOF (Fe-TCPP-MOF), has been successfully synthesized. Based on Hg2+ ion triggered Au catalysis of methylene blue (MB) reduction, a colorimetric method for highly sensitive and selective detection of Hg2+ ions has been established. The Hg2+ ions were first bound to the Au NP surface to form gold amalgam, and then the catalytic activity of Au NPs was initiated. This detection method showed the advantages of a fast response time, and high sensitivity and selectivity. The response time and the limit of detection were as low as 2 s and 103 pM, respectively, benefiting from the uniform cavities and the large specific surface area of Fe-TCPP-MOF, which ensure: (1) uniform dispersion of the Au NPs on the surface of the cavity; and (2) a higher chance of interaction of mercury and MB owing to the gathering effect of Fe-TCPP-MOF.
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Affiliation(s)
- Xiuli Wang
- Key Laboratory of Life-Organic Analysis of Shandong Province, Qufu Normal University, Qufu 273165, China.
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7
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Li R, Hou X, Yuan M, Long Y, Chen S. Carbon Dots Synthesized and its Applications in the Detection of Chlortetracycline and Water Based on the Aggregation‐Induced Emission. ChemistrySelect 2020. [DOI: 10.1002/slct.201904094] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Rong Li
- Department of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan PR China
| | - Xinyan Hou
- Department of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan PR China
| | - Min Yuan
- Department of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan PR China
| | - Yunfei Long
- Department of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan PR China
| | - Shu Chen
- Department of Chemistry and Chemical Engineering Hunan University of Science and Technology Xiangtan PR China
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8
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Garau A, Lvova L, Macedi E, Ambrosi G, Aragoni MC, Arca M, Caltagirone C, Coles SJ, Formica M, Fusi V, Giorgi L, Isaia F, Lippolis V, Orton JB, Paolesse R. N 2S 2 pyridinophane-based fluorescent chemosensors for selective optical detection of Cd 2+ in soils. NEW J CHEM 2020. [DOI: 10.1039/d0nj03858j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A fluorescent sensor array for the quantitative determination of Cd2+ in soils based on two N2S2 pyridinophane chemosensors is presented.
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9
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Carro P, Salvarezza RC. Gold adatoms modulate sulfur adsorption on gold. NANOSCALE 2019; 11:19341-19351. [PMID: 31435624 DOI: 10.1039/c9nr05709a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Sulfur adsorption on Au(111) at high coverage has been studied by density functional calculations. In this case S species organize into rectangular structures containing 8 S atoms irrespective of the S source, which have been alternatively assigned to adsorbed monomeric S, adsorbed S2, adsorbed monomeric plus S2 species, and gold sulfide. We found that monomeric S at the high coverage organizes into S2 species that are stabilized into the 8-S structures by Au adatoms, forming gold disulfide complexes (Au-(S2)4). The Au atoms could be provided by decomposition of more diluted AuS3 containing phases, as recently proposed, and direct removal from terraces and step edges, both explaining the surface coverage of vacancy islands coexisting with the 8-S structures. The gold-disulfide complexes capture the disorder shown in the experimental STM images, explain the intrigued features of XPS, and also, give a smooth pathway to gold sulfide formation at higher temperatures. More importantly, the gold-disulfide complexes allow a unified picture of the gold-sulfur surface chemistry at high coverage for thiols and adsorbed sulfur species where the surface chemistry remains under discussion.
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Affiliation(s)
- Pilar Carro
- Área de Química Física, Departamento de Química, Facultad de Ciencias, Universidad de La Laguna, Instituto de Materiales y Nanotecnología, Avda. Francisco Sánchez, s/n 38200-La Laguna, Tenerife, Spain
| | - Roberto C Salvarezza
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, CONICET, La Plata 1900, Argentina.
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10
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Xiong Y, Wang Y, Han X, Ma Y, Zhu HF, Long Y, Chen S. Nuclear fast red-based colorimetric sensors for sensitive and selective detection of Ag ions. LUMINESCENCE 2019; 34:724-730. [PMID: 31245914 DOI: 10.1002/bio.3666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 05/08/2019] [Accepted: 05/14/2019] [Indexed: 11/10/2022]
Abstract
The reduction of nuclear fast red (NFR) stain by sodium tetrahydroboron was catalyzed in the presence of silver ions (Ag+ ). The fluorescence properties of reduced NFR differed from that of NFR. The product showed fluorescence emission at 480 nm with excitation at 369 nm. Furthermore, the fluorescence intensity of the mixture increased strongly in the presence of Ag+ and Britton-Robinson buffer at pH 4.78. There was a good linear relationship between increased fluorescence intensity (ΔI) and Ag+ concentration in the range 5.0 × 10-9 to 5.0 × 10-8 M. The correlation coefficient was 0.998, and the detection limit (3σ/k) was 1.5 × 10-9 M. The colour of the reaction system changed with variation in Ag+ concentration over a wide range. Based on the colour change, a visual semiquantitative detection method for recognition and sensing of Ag+ was developed for the range 1.0 × 10-8 to 5.0 × 10-4 M, with an indicator that was visible to the naked eye. Therefore, a sensitive, simple method for determination of Ag+ was developed. Optimum conditions for Ag+ detection, the effect of other ions and the analytical application of Ag+ detection of synthesized sample were investigated.
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Affiliation(s)
- Yuan Xiong
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Yi Wang
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Xue Han
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Yao Ma
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Han Fang Zhu
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - YunFei Long
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Shu Chen
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
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11
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Park HJ, Lee SS. Strategic Approaches for Highly Selective and Sensitive Detection of Hg 2+ Ion Using Mass Sensitive Sensors. ANAL SCI 2019; 35:883-888. [PMID: 31006718 DOI: 10.2116/analsci.19p070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Here we present a quartz crystal microbalance (QCM) sensor for the highly selective and sensitive detection of Hg2+ ion, a toxic chemical species and a hazardous environmental contaminant. Hg2+ ion can be quantitatively measured based on changes in the resonance frequency of QCM following mass changes on the QCM sensor surface. The high selectivity for Hg2+ ion in this study can be obtained using a thymine-Hg2+-thymine pair, which is more stable than the adenine-thymine base pair in DNA. On the other hand, gold nanoparticles (AuNPs) and their size-enhancement techniques were used to amplify the QCM signals to increase the sensitivity for Hg2+ ion. With this strategic approach, the proposed QCM sensor can be used to quantitatively analyze Hg2+ ion with high selectivity and sensitivity. The detection limit was as low as 98.7 pM. The sensor failed to work with other metal ions at concentrations 1000-times higher than that of the Hg2+ ion. Finally, the recovery does not exceed 10% of the original value for the detection of Hg2+ ion in tap and bottled water. The results indicate acceptable accuracy and precision for practical applications.
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Affiliation(s)
- Hyeoun Ji Park
- Department of Pharmaceutical Engineering, Soonchunhyang University
| | - Soo Suk Lee
- Department of Pharmaceutical Engineering, Soonchunhyang University
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12
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Cheng Z, Du F, Sun L, Jiang L, Ruan G, Li J. Nitrogen-Doped Carbon Quantum Dots as a “Turn-Off” Fluorescent Probes for Highly Selective and Sensitive Detection of Mercury(II) Ions. ChemistrySelect 2019. [DOI: 10.1002/slct.201803716] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhenfang Cheng
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials; College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004 China
| | - Fuyou Du
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials; College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004 China
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule of Ministry of Education; School of Chemistry and Chemical Engineering; Hunan University of Science and Technology, Xiangtan; 411201 China
| | - Lingshun Sun
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials; College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004 China
| | - Liping Jiang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials; College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004 China
| | - Guihua Ruan
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials; College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004 China
| | - Jianping Li
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials; College of Chemistry and Bioengineering; Guilin University of Technology; Guilin 541004 China
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13
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Garau A, Bencini A, Blake AJ, Caltagirone C, Conti L, Isaia F, Lippolis V, Montis R, Mariani P, Scorciapino MA. [9]aneN3-based fluorescent receptors for metal ion sensing, featuring urea and amide functional groups. Dalton Trans 2019; 48:4949-4960. [DOI: 10.1039/c9dt00288j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The sensing and recognition properties of three new [9]aneN3-based chemosensors have been studied both in solution and in the solid state.
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Affiliation(s)
- Alessandra Garau
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Monserrato
- Italy
| | - Andrea Bencini
- Dipartimento di Chimica ‘Ugo Shiff’
- Università degli Studi di Firenze
- 50019 Sesto Fiorentino
- Italy
| | - Alexander J. Blake
- School of Chemistry
- The University of Nottingham
- University Park
- Nottingham
- UK
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Monserrato
- Italy
| | - Luca Conti
- Dipartimento di Chimica ‘Ugo Shiff’
- Università degli Studi di Firenze
- 50019 Sesto Fiorentino
- Italy
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Monserrato
- Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Monserrato
- Italy
| | - Riccardo Montis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- Monserrato
- Italy
| | - Palma Mariani
- Dipartimento di Chimica ‘Ugo Shiff’
- Università degli Studi di Firenze
- 50019 Sesto Fiorentino
- Italy
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14
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Liu, Y, Tang, Y, Luo, Y, Zhu, Y, Yang, J, Wei, X, Liu, X, Zhao, Y. Synthesis and Application of Fluorescent Probe Containing Barbitone Unit. CHINESE J ORG CHEM 2019. [DOI: 10.6023/cjoc201904001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Wang S, Qu F, Han W, You J. A resonance Rayleigh scattering sensor for sensitive differentiation of telomere DNA length and monitoring special motifs (G-quadruplex and i-motif) based on the Ag nanoclusters and NAND logic gate responding to chemical input signals. J Nanobiotechnology 2018; 16:78. [PMID: 30301461 PMCID: PMC6176526 DOI: 10.1186/s12951-018-0407-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 10/03/2018] [Indexed: 12/04/2022] Open
Abstract
Background Differentiation of telomere length is of vital importance because telomere length is closely related with several deadly diseases such as cancer. Additionally, G-quadruplex and i-motif formation in telomeric DNA have been shown to act as a negative regulator of telomere elongation by telomerase in vivo and are considered as an attractive drug target for cancer chemotherapy. Results In this assay, Ag nanoclusters templated by hyperbranched polyethyleneimine (PEI–Ag NCs) are designed as a new novel resonance Rayleigh scattering (RRS) probe for sensitive differentiation of telomere length and monitoring special motifs (G-quadruplex and i-motif). In this assay, free PEI–Ag NC probe or DNA sequence alone emits low intensities of RRS, while the formation of PEI–Ag NCs/DNA complexes yields greatly enhanced RRS signals; however, when PEI–Ag NCs react with G-quadruplex or i-motif, the intensities of RRS exhibit slight changes. At the same concentration, the enhancement of RRS signal is directly proportional to the length of telomere, and the sensitivity of 64 bases is the highest with the linear range of 0.3–50 nM (limit of detection 0.12 nM). On the other hand, due to the conversion of telomere DNA molecules among multiple surrounding conditions, a DNA logic gate is developed on the basis of two chemical input signals (K+ and H+) and a change in RRS intensity as the output signal. Conclusion Our results indicate that PEI–Ag NCs can serve as a novel RRS probe to identify DNA length and monitor G-quadruplex/i-motif through the different increasing degrees of RRS intensity. Meanwhile, the novel attributes of the nanoprobe stand superior to those involving dyes or labeled DNA because of no chemical modification, low cost, green, and high efficiency. Electronic supplementary material The online version of this article (10.1186/s12951-018-0407-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Shuai Wang
- The Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, Shandong, China.,The Key Laboratory for Colloid and Interface Chemistry of Education Ministry, Shandong University, Jinan, 250100, Shandong, China
| | - Fei Qu
- The Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, Shandong, China.
| | - Wenli Han
- Laboratory Animal Center, Chongqing Medical University, Chongqing, China
| | - Jinmao You
- The Key Laboratory of Life-Organic Analysis, Qufu Normal University, Qufu, 273165, Shandong, China.,Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810001, China
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16
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Vasquez G, Hernández Y, Coello Y. Portable low-cost instrumentation for monitoring Rayleigh scattering from chemical sensors based on metallic nanoparticles. Sci Rep 2018; 8:14903. [PMID: 30297809 PMCID: PMC6175918 DOI: 10.1038/s41598-018-33271-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 09/21/2018] [Indexed: 01/18/2023] Open
Abstract
Using a Hg(II) sensor based on the aggregation of gold nanoparticles as a model system, we evaluated the performance of two portable low-cost devices that monitor the wavelength-ratiometric resonance Rayleigh scattering signal of the chemical sensor upon white-LED illumination. The first device uses two optical filter-photodiode combinations to detect scattered light while the second employs a novel ultra-compact (grating-free) spectral sensor. Results show that the response of the Hg(II) sensor monitored with these devices is comparable to that measured using a high-end benchtop scanning spectrofluorometer. The great potential of this new LED-spectral sensor was demonstrated with the quantification of Hg(II) in tap and spring water. Due to the promising results obtained, many reported chemical sensors based on Rayleigh scattering from metallic nanoparticles could take advantage of this compact portable instrumentation for cost-effective field-deployable applications.
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Affiliation(s)
- Glibver Vasquez
- Departamento de Ciencias, Sección Química, Pontificia Universidad Católica del Perú PUCP, Lima, Peru
| | - Yulán Hernández
- Departamento de Ciencias, Sección Química, Pontificia Universidad Católica del Perú PUCP, Lima, Peru
| | - Yves Coello
- Departamento de Ciencias, Sección Química, Pontificia Universidad Católica del Perú PUCP, Lima, Peru.
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17
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Huang YQ, Fu S, Wang YS, Xue JH, Xiao XL, Chen SH, Zhou B. Protamine-gold nanoclusters as peroxidase mimics and the selective enhancement of their activity by mercury ions for highly sensitive colorimetric assay of Hg(II). Anal Bioanal Chem 2018; 410:7385-7394. [PMID: 30215122 DOI: 10.1007/s00216-018-1344-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 08/01/2018] [Accepted: 08/28/2018] [Indexed: 12/01/2022]
Abstract
We certify that protamine-gold nanoclusters (PRT-AuNCs) synthesized by one-pot method exhibit peroxidase-like activity. The catalytic activity of PRT-AuNCs followed typical Michaelis-Menten kinetics and exhibited higher affinity to 3,3',5,5'-tetramethylbenzidine (TMB) as the substrate compared to that of natural horseradish peroxidase. Meanwhile, we found that Hg(II) could dramatically and selectively enhance the peroxidase-like activity of PRT-AuNCs, and the enhanced mechanism by Hg(II) was demonstrated to be generation of the cationic Au species and the partly oxidized Au species (Auδ+) by Hg2+-Au0/Au+ interaction. Based on this finding, quantitative determinations of Hg(II) via visual observation and absorption spectra were achieved. The proposed strategy displays high selectivity that arises from the strong aurophilic interaction of mercury towards gold. Moreover, the developed method is highly sensitive with a wide linear range and low detection limit of 1.16 nM. This strategy is not only helpful to develop effective nanomaterials-based artificial enzyme mimics but also irradiative to discover new applications of artificial mimic enzymes in bio-detection, medical diagnostics, and biotechnology. Graphical abstract Protamine-gold nanoclusters (PRT-AuNCs) synthesized by one-pot method exhibit peroxidase-like activity. Hg(II) can stimulate the peroxidase-like activity of PRT-AuNCs selectively, enhancing their ability to catalyze the chromogenic reaction of TMB by H2O2.
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Affiliation(s)
- Yan-Qin Huang
- College of Public Health, University of South China, West Changsheng Road 28#, Hengyang, 421001, Hunan, China
| | - Sha Fu
- College of Public Health, University of South China, West Changsheng Road 28#, Hengyang, 421001, Hunan, China
| | - Yong-Sheng Wang
- College of Public Health, University of South China, West Changsheng Road 28#, Hengyang, 421001, Hunan, China.
| | - Jin-Hua Xue
- College of Public Health, University of South China, West Changsheng Road 28#, Hengyang, 421001, Hunan, China
| | - Xi-Lin Xiao
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, Hunan, China
| | - Si-Han Chen
- College of Public Health, University of South China, West Changsheng Road 28#, Hengyang, 421001, Hunan, China
| | - Bin Zhou
- College of Public Health, University of South China, West Changsheng Road 28#, Hengyang, 421001, Hunan, China
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18
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Prasad KS, Shruthi G, Shivamallu C. Functionalized Silver Nano-Sensor for Colorimetric Detection of Hg 2+ Ions: Facile Synthesis and Docking Studies. SENSORS 2018; 18:s18082698. [PMID: 30115894 PMCID: PMC6111407 DOI: 10.3390/s18082698] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/23/2018] [Accepted: 07/24/2018] [Indexed: 01/09/2023]
Abstract
In the present study, we describe the facile synthesis of silver nanoparticles (AgNPs) and their nanostructures functionalized with 2-aminopyrimidine-4,6-diol (APD-AgNPs) for Hg2+ ion detection. The promising colorimetric response of APD-AgNPs to detect Hg2+ ions was visible with naked eyes and spectroscopic changes were examined by using a UV-Visible spectrophotometer. The aggregation of APD-AgNPs upon addition of Hg2+ ions was due to the chelation effect of the functionalized nanostructures and results in a color change from pale brown to deep yellow color. The probing sensitivity was observed within five minutes with a detection limit of about 0.35 µM/L. The TEM images of APD-AgNPs showed polydispersed morphologies with hexagonal, heptagonal and spherical nanostructures with an average size between 10 to 40 nm. Furthermore, the sensing behavior of APD-AgNPs towards Hg2+ ions detection was investigated using docking and interaction studies.
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Affiliation(s)
- Kollur Shiva Prasad
- Chemistry Group, Manipal Centre for Natural Sciences, Manipal Academy of Higher Education, Manipal (MAHE), Udupi 576 104, Karnataka, India.
| | - Govindaraju Shruthi
- Faculty of Life Sciences, Division of Biotechnology and Bioinformatics, JSS Academy of Higher Education and Research (JSSAHER), Mysuru 570 015, Karnataka, India.
| | - Chandan Shivamallu
- Faculty of Life Sciences, Division of Biotechnology and Bioinformatics, JSS Academy of Higher Education and Research (JSSAHER), Mysuru 570 015, Karnataka, India.
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19
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Colorimetric determination of Hg(II) via the gold amalgam induced deaggregation of gold nanoparticles. Mikrochim Acta 2018; 185:351. [PMID: 29968011 DOI: 10.1007/s00604-018-2900-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 06/28/2018] [Indexed: 10/28/2022]
Abstract
A method is described for the colorimetric determination of mercury(II). In the absence of Hg(II), aminopropyltriethoxysilane (APTES) which is positively charged at pH 7 is electrostatically absorbed on the surface of gold nanoparticles (AuNPs). This neutralizes the negative charges of the AuNPs and leads to NP aggregation and a color change from red to blue-purple. However, in the presence of Hg(II), reduced Hg (formed through the reaction between Hg(II) and citrate on the AuNP surface) will replace the APTES on the AuNPs. Hence, the formation of aggregates is suppressed and the color of the solution does not change. The assay is performed by measuring the ratio of absorbances at 650 and 520 nm and can detect Hg(II) at nanomolar levels with a 10 nM limit of detection. The specific affinity between mercury and gold warrants the excellent selectivity for Hg(II) over other environmentally relevant metal ions. Graphical Abstract Schematic of the method for determination of Hg2+ based on the gold amalgam-induced deaggregation of gold nanoparticles in the presence of APTES with the LOD of 10.1 nM.
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20
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Lu P, Lang J, Weng Z, Rahimi-Iman A, Wu H. Hybrid Structure of 2D Layered GaTe with Au Nanoparticles for Ultrasensitive Detection of Aromatic Molecules. ACS APPLIED MATERIALS & INTERFACES 2018; 10:1356-1362. [PMID: 29220168 DOI: 10.1021/acsami.7b14121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Owing to a complex monocline structure and high-density of defects in monocrystalline GaTe, the performance of GaTe-based electronic devices is considerably compromised. Yet, the defects' nature in GaTe could be a merit rather than a shortcoming in other realms. In our work, the density of defects in GaTe films is utilized for a facile decoration of Au nanoparticles (NPs), which allowed us to extend its application potential to the domain of surface enhanced Raman scattering (SERS) for the first time. Two-dimensional (2D) GaTe layered structures are prepared by mechanical exfoliation, and high-density Au NPs are synthesized by immersion of 2D GaTe in HAuCl4 aqueous solution. By varying the immersion time, the sizes and coverage rate of Au NPs on GaTe can be elaborately tuned. Thanks to the defect nature of GaTe, the maximum coverage amounts to 98%. The hereby achieved Au-NPs-2D-GaTe hybrid structure demonstrates outstanding properties as a superior SERS substrate for ultrasensitive detection of R6G aromatic molecules. Remarkably, the enhancement factor reaches up to 1.6 × 104, and the minimum detectable concentration is 10-11 M, undercutting that of recently reported Au-NPs-MoS2 SERS and Au-NPs-graphene SERS substrates which have a similar structure. With superior detection capability and facile preparation, Au-NPs-GaTe SERS substrates can become a perfect choice for the detection of aromatic molecules.
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Affiliation(s)
- Pengqi Lu
- Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027, P.R. China
| | - Jiawei Lang
- Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027, P.R. China
| | - Zeping Weng
- Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027, P.R. China
| | - Arash Rahimi-Iman
- Faculty of Physics and Materials Sciences Center, Philipps-Universität Marburg , 35032 Marburg, Germany
| | - Huizhen Wu
- Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027, P.R. China
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21
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Yang Q, Liu J, Li B, Hu X, Liu S, Chen G. In-situ formation of ion-association nanoparticles induced enhancements of resonance Rayleigh scattering intensities for quantitative analysis of trace Hg(2+) ions in environmental samples. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 167:19-25. [PMID: 27235829 DOI: 10.1016/j.saa.2016.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 05/04/2016] [Accepted: 05/10/2016] [Indexed: 06/05/2023]
Abstract
In this paper, Hg(2+) ions are demonstrated to form anionic [HgI4](2-) complexes after interacting with massive amount of I(-) ions. Subsequently, the addition of tetradecyl pyridyl bromide (TPB) can make [HgI4](2-) anionic complexes react with univalent tetradecyl pyridyl cationic ions (TP(+)), forming dispersed ion-association complexes (TP)2(HgI4). Due to the extrusion action of water and Van der Waals force, the hydrophobic ion-association complexes aggregate together, forming dispersed nanoparticles with an average size of about 8.5nm. Meanwhile, resonance Rayleigh scattering (RRS) intensity is apparently enhanced due to the formation of (TP)2(HgI4) ion-association nanoparticles, contributing to a novel technique for Hg(2+) detection. The wavelength of 365nm is chosen as a detection wavelength and several conditions affecting the RRS responses of Hg(2+) are optimized. Under the optimum condition, the developed method is used for the determination of Hg(2+) in aqueous solution and the detection limit is estimated to be 0.8ngmL(-1). Finally, the practical application of the developed method can be confirmed through the detections of Hg(2+) in waste and river water samples with satisfactory results.
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Affiliation(s)
- Qingling Yang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China; Environmental Monitoring Center in Chongqing City, Chongqing 400020, China
| | - Jian Liu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Banglin Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Xiaoli Hu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Shaopu Liu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
| | - Gangcai Chen
- Environmental Monitoring Center in Chongqing City, Chongqing 400020, China
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22
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Tang J, Wu P, Hou X, Xu K. Modification-free and N-acetyl-L-cysteine-induced colorimetric response of AuNPs: A mechanistic study and sensitive Hg2+ detection. Talanta 2016; 159:87-92. [DOI: 10.1016/j.talanta.2016.05.068] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 05/17/2016] [Accepted: 05/24/2016] [Indexed: 01/08/2023]
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23
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Mahapatra AK, Maji R, Maiti K, Mondal S, Ali SS, Manna SK, Sahoo P. Carbazole-driven ratiometric fluorescence turn on for dual ion recognition of Zn2+ and Hg2+ by thiophene-pyridyl conjugate in HEPES buffer medium: spectroscopy, computational, microscopy and cellular studies. Supramol Chem 2016. [DOI: 10.1080/10610278.2016.1202412] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ajit Kumar Mahapatra
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, India
| | - Rajkishor Maji
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, India
| | - Kalipada Maiti
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, India
| | - Sanchita Mondal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, India
| | - Syed Samim Ali
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, India
| | - Saikat Kumar Manna
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, India
| | - Prithidipa Sahoo
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, India
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24
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Liu B, Huang Y, Zhu X, Hao Y, Ding Y, Wei W, Wang Q, Qu P, Xu M. Smart lanthanide coordination polymer fluorescence probe for mercury(II) determination. Anal Chim Acta 2016; 912:139-45. [DOI: 10.1016/j.aca.2016.01.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 01/22/2016] [Accepted: 01/24/2016] [Indexed: 12/27/2022]
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25
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Chauhan K, Singh P, Singhal RK. New Chitosan-Thiomer: An Efficient Colorimetric Sensor and Effective Sorbent for Mercury at Ultralow Concentration. ACS APPLIED MATERIALS & INTERFACES 2015; 7:26069-26078. [PMID: 26575432 DOI: 10.1021/acsami.5b06078] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This paper describes an innovative procedure for the fabrication of a facile colorimetric sensor in one step with thiol functional group for Hg(2+) detection at trace level. The sensor was successfully synthesized via chitosan isothiouronium salt intermediate with innocuous low cost thiourea reagent under microwave irradiation. It is an innovative green approach to achieve thiol functionalization with a high degree of substitution. Thiomer was characterized by titrimetry, FTIR, (1)H NMR, elemental analysis (CHNS), and EDX for extent of modification with detail structure. The synthesized and well characterized thiomer was screened for sensor application. The sensing solution of thiomer resulted in an instantaneous sharp color change from colorless, yellow, to brown with increase in Hg(2+) concentration. Chitosan thiomer also exhibited high sensitivity and selectivity for Hg(2+) over other possible interfering ions in aqueous media. The sensing responses were visualized quantitatively with quick response, good selectivity, high sensitivity, and a low detection limit of ∼0.465 ppb by the naked eye. The same was tested with a paper strip method for technological applications. Furthermore, the as-prepared sensors also exhibited exceptional sorption potential for Hg(2+) even from ultralow concentration aqueous solution and reduced the Hg(2+) concentration from 10 ppb to the extremely low level of ∼0.04 ppb as studied by cyclic voltammetry. Thus, the proposed method is simple, promising, and rapid without any complicated modifying step and is an economical alternative to traditional Hg(2+) sensors for rapid sensor application in environmental water samples at ppb levels.
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Affiliation(s)
- Kalpana Chauhan
- Department of Chemistry, Shoolini University , Solan 173229, India
| | - Prem Singh
- Department of Chemistry, Shoolini University , Solan 173229, India
| | - Rakesh Kumar Singhal
- Analytical Chemistry Division, Bhabha Atomic Research Center , Mumbai 4000085, India
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26
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Li Q, Tan X, Zheng X, Tang W, Yang J. A novel method for the determination of fast green in grape wine based on resonance Rayleigh scattering. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.05.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Zhao H, Wang YS, Tang X, Zhou B, Xue JH, Liu H, Liu SD, Cao JX, Li MH, Chen SH. An enzyme-free strategy for ultrasensitive detection of adenosine using a multipurpose aptamer probe and malachite green. Anal Chim Acta 2015; 887:179-185. [PMID: 26320800 DOI: 10.1016/j.aca.2015.05.046] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 05/14/2015] [Accepted: 05/20/2015] [Indexed: 12/31/2022]
Abstract
We report on an enzyme-free and label-free strategy for the ultrasensitive determination of adenosine. A novel multipurpose adenosine aptamer (MAAP) is designed, which serves as an effective target recognition probe and a capture probe for malachite green. In the presence of adenosine, the conformation of the MAAP is converted from a hairpin structure to a G-quadruplex. Upon addition of malachite green into this solution, a noticeable enhancement of resonance light scattering was observed. The signal response is directly proportional to the concentration of adenosine ranging from 75 pM to 2.2 nM with a detection limit of 23 pM, which was 100-10,000 folds lower than those obtained by previous reported methods. Moreover, this strategy has been applied successfully for detecting adenosine in human urine and blood samples, further proving its reliability. The mechanism of adenosine inducing MAAP to form a G-quadruplex was demonstrated by a series of control experiments. Such a MAAP probe can also be used to other strategies such as fluorescence or spectrophotometric ones. We suppose that this strategy can be expanded to develop a universal analytical platform for various target molecules in the biomedical field and clinical diagnosis.
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Affiliation(s)
- Hui Zhao
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Yong-Sheng Wang
- College of Public Health, University of South China, Hengyang, 421001, PR China.
| | - Xian Tang
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Bin Zhou
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Jin-Hua Xue
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Hui Liu
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Shan-Du Liu
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Jin-Xiu Cao
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Ming-Hui Li
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Si-Han Chen
- College of Public Health, University of South China, Hengyang, 421001, PR China
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28
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Walen H, Liu DJ, Oh J, Lim H, Evans JW, Kim Y, Thiel PA. Self-organization of S adatoms on Au(111): √3R30° rows at low coverage. J Chem Phys 2015; 143:014704. [DOI: 10.1063/1.4922929] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Holly Walen
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
| | - Da-Jiang Liu
- Ames Laboratory of the USDOE, Ames, Iowa 50011, USA
| | - Junepyo Oh
- RIKEN Surface and Interface Science Laboratory, Wako, Saitama 351-0198, Japan
| | - Hyunseob Lim
- RIKEN Surface and Interface Science Laboratory, Wako, Saitama 351-0198, Japan
| | - J. W. Evans
- Ames Laboratory of the USDOE, Ames, Iowa 50011, USA
- Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA
| | - Yousoo Kim
- RIKEN Surface and Interface Science Laboratory, Wako, Saitama 351-0198, Japan
| | - P. A. Thiel
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
- Ames Laboratory of the USDOE, Ames, Iowa 50011, USA
- Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, USA
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29
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Yang J, Tan X, Zhang X, Yang Q, Shen Y. Cu²⁺ functionalized N-acetyl-L-cysteine capped CdTe quantum dots as a novel resonance Rayleigh scattering probe for the recognition of phenylalanine enantiomers. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:591-597. [PMID: 26163781 DOI: 10.1016/j.saa.2015.07.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 06/27/2015] [Accepted: 07/01/2015] [Indexed: 06/04/2023]
Abstract
A simple protocol that can be used to simultaneously determinate enantiomers is extremely intriguing and useful. In this study, we proposed a low-cost, facile, sensitive method for simultaneous determination. The molecular recognition of Cu(2+) functionalized N-acetyl-l-cysteine capped CdTe quantum dots (Cu(2+)-NALC/CdTe QDs) with phenylalanine (PA) enantiomers was investigated based on the resonance Rayleigh scattering (RRS) spectral technique. The RRS intensity of NALC/CdTe QDs is very weak, but Cu(2+) functionalized NALC/CdTe QDs have extremely high RRS intensity, the most important observations are that PA could quench the RRS intensity of Cu(2+)-NALC/CdTe QDs, and that l-PA and d-PA have different degree of influence. In addition, those experimental factors such as acidity, concentration of Cu(2+) and reaction time were investigated in regards to their effects on enantioselective interaction. Finally, the applicability of the chiral recognized sensor for the analysis of chiral mixtures on enantiomers has been demonstrated, and the results that were obtained high precision (<4.63%) and low error (<3.06%).
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Affiliation(s)
- Jidong Yang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China; School of Chemistry and Environmental Engineering, Chongqing Three Gorges University, Wanzhou, Chongqing 404000, China.
| | - Xuanping Tan
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Xiaoning Zhang
- Department of Mathematics, Sciences & Technology, Paine College, 1235 Fifteenth Street, Augusta, GA 30901, United Sates
| | - Qiong Yang
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing, Fuling 408100, China
| | - Yizhong Shen
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
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30
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Chen SH, Wang YS, Chen YS, Tang X, Cao JX, Li MH, Wang XF, Zhu YF, Huang YQ. Dual-channel detection of metallothioneins and mercury based on a mercury-mediated aptamer beacon using thymidine-mercury-thymidine complex as a quencher. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 151:315-321. [PMID: 26143324 DOI: 10.1016/j.saa.2015.06.106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 06/26/2015] [Accepted: 06/28/2015] [Indexed: 06/04/2023]
Abstract
A novel dual-channel strategy for the detection of metallothioneins (MTs) and Hg(2+) has been developed based on a mercury-mediated aptamer beacon (MAB) using thymidine-mercury-thymidine complex as a quencher for the first time. In the presence of Hg(2+), the T-rich oligonucleotide with a 6-carboxyfluorescein (TRO-FAM) can form an aptamer beacon via the formation of T-Hg(2+)-T base pairs, which results in a fluorescence quenching of the sensing system owing to the fluorescence resonance energy transfer (FRET) from the fluorophore of FAM to the terminated T-Hg(2+)-T base pair. The addition of MTs into this solution leads to the disruption of the T-Hg(2+)-T complex, resulting in an increase of the fluorescent signal of the system. In the optimizing condition, ΔF was directly proportional to the concentrations ranging from 5.63 nM to 0.275 μM for MTs, and 14.2 nM to 0.30 μM for Hg(2+) with the detection limits of 1.69 nM and 4.28 nM, respectively. The proposed dual-channel method avoids the label steps of a quencher in common molecular beacon strategies, without tedious procedure or the requirement of sophisticated equipment, and is rapid, inexpensive and sensitive.
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Affiliation(s)
- Si-Han Chen
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Yong-Sheng Wang
- College of Public Health, University of South China, Hengyang 421001, PR China.
| | - Yun-Sheng Chen
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Xian Tang
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Jin-Xiu Cao
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Ming-Hui Li
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Xiao-Feng Wang
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Yu-Feng Zhu
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Yan-Qin Huang
- College of Public Health, University of South China, Hengyang 421001, PR China
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31
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Lu J, Lu JH, Liu H, Liu B, Gong L, Tok ES, Loh KP, Sow CH. Microlandscaping of Au nanoparticles on few-layer MoS2 films for chemical sensing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:1792-800. [PMID: 25581016 DOI: 10.1002/smll.201402591] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/18/2014] [Indexed: 05/13/2023]
Abstract
Surface modification or decoration of ultrathin MoS2 films with chemical moieties is appealing since nanointerfacing can functionalize MoS2 films with bonus potentials. In this work, a facile and effective method for microlandscaping of Au nanoparticles (NPs) on few-layer MoS2 films is developed. This approach first employs a focused laser beam to premodify the MoS2 films to achieve active surface domains with unbound sulfur. When the activated surface is subsequently immersed in AuCl3 solution, Au NPs are found to preferentially decorate onto the modified regions. As a result, Au NPs can be selectively and locally anchored onto designated regions on the MoS2 surface. With a scanning laser beam, microlandscapes comprising of Au NPs decorated on laser-defined micropatterns are constructed. By varying the laser power, reaction time and thickness of the MoS2 films, the size and density of the NPs can be controlled. The resulting hybrid materials are demonstrated as efficient Raman active surfaces for the detection of aromatic molecules with high sensitivity.
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Affiliation(s)
- Junpeng Lu
- Department of Physics, 2 Science Drive 3, National University of Singapore, 117542, Singapore
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32
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Mehta VN, Kailasa SK. Malonamide dithiocarbamate functionalized gold nanoparticles for colorimetric sensing of Cu2+ and Hg2+ ions. RSC Adv 2015. [DOI: 10.1039/c4ra11640b] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, a colorimetric probe was developed based on malonamide dithiocarbamate functionalized gold nanoparticles (MA–DTC–Au NPs) for the simultaneous colorimetric detection of Cu2+ and Hg2+ ions.
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33
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Hou J, Li J, Sun J, Ai S, Wang M. Nitrogen-doped photoluminescent carbon nanospheres: green, simple synthesis via hair and application as a sensor for Hg2+ions. RSC Adv 2014. [DOI: 10.1039/c4ra04209c] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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34
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Facile colorimetric detection of Hg2+ based on anti-aggregation of silver nanoparticles. Biosens Bioelectron 2014; 57:139-42. [DOI: 10.1016/j.bios.2014.02.007] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 02/04/2014] [Accepted: 02/05/2014] [Indexed: 12/29/2022]
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35
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A sensitive resonance light scattering assay for uranyl ion based on the conformational change of a nuclease-resistant aptamer and gold nanoparticles acting as signal reporters. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1267-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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36
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An ultrasensitive label-free assay of 8-hydroxy-2'-deoxyguanosine based on the conformational switching of aptamer. Biosens Bioelectron 2014; 58:22-6. [PMID: 24607618 DOI: 10.1016/j.bios.2014.02.047] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2013] [Revised: 01/28/2014] [Accepted: 02/16/2014] [Indexed: 01/18/2023]
Abstract
We developed a highly sensitive label-free assay of 8-hydroxy-2'-deoxyguanosine (8-OHdG) using 8-OHdG-aptamer (Apt) as the recognition element. The Apt was adsorbed onto the surface of gold nanoparticles (AuNPs), which prevents them from aggregating under high-salt conditions. Upon addition of 8-OHdG, the conformation of the Apt changes to form a G-quadruplex structure, which leads to the aggregation of the AuNPs along with the increase of the resonance light scattering intensity. The mechanism of 8-OHdG that induces Apt to form G-quadruplexes structure was studied by circular dichroism. The response signals linearly correlated with the concentration of 8-OHdG ranging from 90.8pM to 14.1nM with a detection limit of 27.3pM, which is much lower than that obtained by other methods. This method does not need any label steps and sophisticated equipment. The application for detection of 8-OHdG in real samples further demonstrated its reliability. This strategy would be helpful for developing a universal analytical method by simply replacing corresponding aptamers for various target molecules.
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37
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Wang W, Liu C, Ling J, Huang C. Mercuric ions induced aggregation of gold nanoparticles as investigated by localized surface plasmon resonance light scattering and dynamic light scattering techniques. Sci China Chem 2013. [DOI: 10.1007/s11426-012-4819-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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38
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Zhang P, Chen S, Kang Y, Long Y. Trace mercury ion determination based on the highly selective redox reaction between stannous ion and mercury ion enhanced by gold nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 99:347-352. [PMID: 23022615 DOI: 10.1016/j.saa.2012.08.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2012] [Revised: 08/03/2012] [Accepted: 08/12/2012] [Indexed: 06/01/2023]
Abstract
A novel resonance light scattering (RLS) spectrometric method for mercury ions (Hg(2+)) determination has been established in this article. Mercury (Hg) nanoparticle formed from the highly selective redox reaction between citrate-stabilized stannous ions (Sn(2+)) and Hg(2+). As a result, the RLS intensities of the system can be enhanced and it can be sensitized in the presence of very little amount of gold nanoparticles (AuNPs). According to this phenomenon, trace Hg(2+) in real water sample has been determined directly by RLS spectrometry. It has been found that the enhanced RLS intensities (ΔI(RLS)) characterized at 395 nm are proportional to the concentration of Hg(2+) in the range of 0.1-30 μmol L(-1) with a detection limit (3σ) of 0.051 μmol L(-1). The method described herein has good sensitivity, selectivity, and without complicated sample pretreatment. Moreover, the feasibility for the analysis of Hg(2+) in a wastewater sample was identified with a good recovery (100.2-106.3%).
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Affiliation(s)
- Pingping Zhang
- Key Laboratory of Theoretical Chemistry and Molecular Simulation of Ministry of Education of China, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
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39
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Pensa E, Cortés E, Corthey G, Carro P, Vericat C, Fonticelli MH, Benítez G, Rubert AA, Salvarezza RC. The chemistry of the sulfur-gold interface: in search of a unified model. Acc Chem Res 2012; 45:1183-92. [PMID: 22444437 DOI: 10.1021/ar200260p] [Citation(s) in RCA: 292] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Over the last three decades, self-assembled molecular films on solid surfaces have attracted widespread interest as an intellectual and technological challenge to chemists, physicists, materials scientists, and biologists. A variety of technological applications of nanotechnology rely on the possibility of controlling topological, chemical, and functional features at the molecular level. Self-assembled monolayers (SAMs) composed of chemisorbed species represent fundamental building blocks for creating complex structures by a bottom-up approach. These materials take advantage of the flexibility of organic and supramolecular chemistry to generate synthetic surfaces with well-defined chemical and physical properties. These films already serve as structural or functional parts of sensors, biosensors, drug-delivery systems, molecular electronic devices, protecting capping for nanostructures, and coatings for corrosion protection and tribological applications. Thiol SAMs on gold are the most popular molecular films because the resulting oxide-free, clean, flat surfaces can be easily modified both in the gas phase and in liquid media under ambient conditions. In particular, researchers have extensively studied SAMs on Au(111) because they serve as model systems to understand the basic aspects of the self-assembly of organic molecules on well-defined metal surfaces. Also, great interest has arisen in the surface structure of thiol-capped gold nanoparticles (AuNPs) because of simple synthesis methods that produce highly monodisperse particles with controllable size and a high surface/volume ratio. These features make AuNPs very attractive for technological applications in fields ranging from medicine to heterogeneous catalysis. In many applications, the structure and chemistry of the sulfur-gold interface become crucial since they control the system properties. Therefore, many researchers have focused on understanding of the nature of this interface on both planar and nanoparticle thiol-covered surfaces. However, despite the considerable theoretical and experimental efforts made using various sophisticated techniques, the structure and chemical composition of the sulfur-gold interface at the atomic level remains elusive. In particular, the search for a unified model of the chemistry of the S-Au interface illustrates the difficulty of determining the surface chemistry at the nanoscale. This Account provides a state-of-the-art analysis of this problem and raises some questions that deserve further investigation.
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Affiliation(s)
- Evangelina Pensa
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata - CONICET, Sucursal 4 Casilla de Correo 16 (1900) La Plata, Argentina
| | - Emiliano Cortés
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata - CONICET, Sucursal 4 Casilla de Correo 16 (1900) La Plata, Argentina
| | - Gastón Corthey
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata - CONICET, Sucursal 4 Casilla de Correo 16 (1900) La Plata, Argentina
| | - Pilar Carro
- Departamento de Química Física, Instituto de Materiales y Nanotecnología, Universidad de La Laguna, Tenerife, Spain
| | - Carolina Vericat
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata - CONICET, Sucursal 4 Casilla de Correo 16 (1900) La Plata, Argentina
| | - Mariano H. Fonticelli
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata - CONICET, Sucursal 4 Casilla de Correo 16 (1900) La Plata, Argentina
| | - Guillermo Benítez
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata - CONICET, Sucursal 4 Casilla de Correo 16 (1900) La Plata, Argentina
| | - Aldo A. Rubert
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata - CONICET, Sucursal 4 Casilla de Correo 16 (1900) La Plata, Argentina
| | - Roberto C. Salvarezza
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata - CONICET, Sucursal 4 Casilla de Correo 16 (1900) La Plata, Argentina
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40
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A colorimetric and surface-enhanced Raman scattering dual-signal sensor for Hg2+ based on Bismuthiol II-capped gold nanoparticles. Anal Chim Acta 2012; 723:88-93. [DOI: 10.1016/j.aca.2012.02.031] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 02/10/2012] [Accepted: 02/15/2012] [Indexed: 11/23/2022]
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41
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Ding N, Zhao H, Peng W, He Y, Zhou Y, Yuan L, Zhang Y. A simple colorimetric sensor based on anti-aggregation of gold nanoparticles for Hg2+ detection. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2011.12.024] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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42
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Xie WY, Huang WT, Zhang JR, Luo HQ, Li NB. A triple-channel optical signal probe for Hg2+ detection based on acridine orange and aptamer-wrapped gold nanoparticles. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31280h] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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43
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Interaction of adenine with palladium chloride, determination of adenine via resonance Rayleigh scattering method. Anal Chim Acta 2011; 707:114-20. [DOI: 10.1016/j.aca.2011.08.051] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Revised: 07/27/2011] [Accepted: 08/29/2011] [Indexed: 11/18/2022]
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44
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Yun Y, Cui F, Geng S, Jin J. Determination of bismuth in pharmaceutical products using phosphoric acid as molecular probe by resonance light scattering. LUMINESCENCE 2011; 27:352-6. [DOI: 10.1002/bio.1357] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Revised: 07/21/2011] [Accepted: 08/15/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Yanru Yun
- Xuchang Vocational Technical College; Xuchang; 461000; China
| | - Fengling Cui
- School of Chemistry and Environmental Science, Key Laboratory for Environmental Pollution Control Technology of Henan Province; Henan Normal University; Xinxiang; 453007; China
| | - Shaoguang Geng
- School of Chemistry and Environmental Science, Key Laboratory for Environmental Pollution Control Technology of Henan Province; Henan Normal University; Xinxiang; 453007; China
| | - Jianhua Jin
- School of Chemistry and Environmental Science, Key Laboratory for Environmental Pollution Control Technology of Henan Province; Henan Normal University; Xinxiang; 453007; China
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45
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Liang A, Zhou L, Qin H, Zhang Y, Ouyang H, Jiang Z. A highly sensitive aptamer-nanogold catalytic resonance scattering spectral assay for melamine. J Fluoresc 2011; 21:1907-12. [PMID: 21519890 DOI: 10.1007/s10895-011-0888-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Accepted: 03/31/2011] [Indexed: 10/18/2022]
Abstract
The aptamer (ssDNA) was used to label nanogold (NG) particle to fabricate an aptamer-nanogold (NGssDNA) probe for melamine. The probe was stabile in pH 6.6 Na(2)HPO(4)-NaH(2)PO(4) buffer solutions and in the presence of high concentration of electrolyte. Upon addition of melamine, it interacted with the probe to form big NGssDNA-melamine aggregations that led to the resonance Rayleigh scattering (RRS) intensity at 566 nm increased greatly. The increased RRS intensity (ΔI) is linear to melamine concentration in the range of 1.89-81.98 μg/L, with a detection limit of 0.98 μg/L melamine. The unreacted probe in the aptamer reaction solution exhibited strong catalytic effect on the slow Cu(2)O particle reaction between glucose and Fehling reagent, but the catalytic activity of NG aggregations is very weak. When melamine concentration increased, the unreacted probe decreased, the RRS peak intensity at 614 nm decreased. The decreased RS intensity is linear to melamine concentration in the range of 0.63-47.30 ng/L melamine, with a detection limit of 0.38 ng/L. The aptamer-modified nanogold catalytic RRS assay was applied to determination of melamine in milk, with high sensitivity and selectivity, simplicity and rapidity.
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Affiliation(s)
- Aihui Liang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guangxi Normal University, Guilin 541004, China
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46
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Zhang F, Wu X, Zhan J. Resonance light scattering technique for determination of polychlorinated biphenyls with silver nanoparticles. LUMINESCENCE 2011; 26:656-61. [DOI: 10.1002/bio.1292] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Revised: 01/23/2011] [Accepted: 02/24/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Fengju Zhang
- Key Laboratory of Colloid and Interface Chemistry; Ministry of Education, School of Chemistry and Chemical Engineering; Shandong University; Jinan; 250100; People's Republic of China
| | - Xia Wu
- Key Laboratory of Colloid and Interface Chemistry; Ministry of Education, School of Chemistry and Chemical Engineering; Shandong University; Jinan; 250100; People's Republic of China
| | - Jinhua Zhan
- Key Laboratory of Colloid and Interface Chemistry; Ministry of Education, School of Chemistry and Chemical Engineering; Shandong University; Jinan; 250100; People's Republic of China
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47
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Liu D, Wang Z, Jiang X. Gold nanoparticles for the colorimetric and fluorescent detection of ions and small organic molecules. NANOSCALE 2011; 3:1421-33. [PMID: 21359318 DOI: 10.1039/c0nr00887g] [Citation(s) in RCA: 270] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In recent years, gold nanoparticles (AuNPs) have drawn considerable research attention in the fields of catalysis, drug delivery, imaging, diagnostics, therapy and biosensors due to their unique optical and electronic properties. In this review, we summarized recent advances in the development of AuNP-based colorimetric and fluorescent assays for ions including cations (such as Hg(2+), Cu(2+), Pb(2+), As(3+), Ca(2+), Al(3+), etc) and anions (such as NO(2)(-), CN(-), PF(6)(-), F(-), I(-), oxoanions), and small organic molecules (such as cysteine, homocysteine, trinitrotoluene, melamine and cocaine, ATP, glucose, dopamine and so forth). Many of these species adversely affect human health and the environment. Moreover, we paid particular attention to AuNP-based colorimetric and fluorescent assays in practical applications.
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Affiliation(s)
- Dingbin Liu
- CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100190, China
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48
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Hu S, Shang ZB, Wang Y. Effect of dextran molecular weight on resonance light-scattering of quantum dots modified with dextran and concanavalin A. CHINESE CHEM LETT 2011. [DOI: 10.1016/j.cclet.2010.07.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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49
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A novel and sensitive resonance scattering assay for detection of urea in serum coupled urease catalytic reaction and NH4 + associated particle reaction. Bioprocess Biosyst Eng 2011; 34:639-45. [DOI: 10.1007/s00449-011-0513-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Accepted: 01/06/2011] [Indexed: 10/18/2022]
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50
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Lin YW, Huang CC, Chang HT. Gold nanoparticle probes for the detection of mercury, lead and copper ions. Analyst 2011; 136:863-71. [DOI: 10.1039/c0an00652a] [Citation(s) in RCA: 318] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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