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Chen Y, Wang H, Zhou J, Lin D, Zhang L, Xing Z, Zhang Q, Xia L. Sensitive SERS assay for L-cysteine based on functionalized silver nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 318:124487. [PMID: 38805989 DOI: 10.1016/j.saa.2024.124487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/26/2024] [Accepted: 05/19/2024] [Indexed: 05/30/2024]
Abstract
L-cysteine, an indispensable amino acid present in natural proteins, plays pivotal roles in various biological processes. Consequently, precise and selective monitoring of its concentrations is imperative. Herein, we propose a Surface-enhanced Raman Scattering (SERS) sensor for detecting L-cysteine based on the anti-aggregation of 4-mercaptobenzoic acid (4-MBA) and histidine (His) functionalized silver nanoparticles (Ag NPs). The presence of Hg2+ ions can induce the aggregation of Ag NPs@His@4-MBA due to the unique nanostructures of Ag NPs@His@4-MBA, resulting in a robust SERS intensity of 4-MBA. However, in the presence of L-cysteine, the stronger affinity between L-cysteine and Hg2+ reduces the concentration of free Hg2+, causing the dispersion of the aggregated functionalized Ag NPs and the reduction of the SERS signal intensity of 4-MBA. The developed SERS platform demonstrates excellent performance with a low detection limit of 5 nM (S/N = 3) and linear detection capabilities within the range of 0.01-100 μM for L-cysteine. Additionally, the method was successfully employed for the determination of L-cysteine in spiked serum samples, yielding recoveries ranging from 95.0 % to 108.1 % with relative standard deviations of less than 3.3 %. This study not only presents a novel approach for fabricating highly sensitive and specific SERS biosensors for biomolecule detection but also offers a significant strategy for the development and construction of SERS substrates using anti-aggregation design.
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Affiliation(s)
- Yaxian Chen
- College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Huiting Wang
- College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Jie Zhou
- College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Dongxue Lin
- College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Ling Zhang
- College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
| | - Zhiqiang Xing
- College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Qian Zhang
- College of Chemistry, Liaoning University, Shenyang 110036, China.
| | - Lixin Xia
- College of Chemistry, Liaoning University, Shenyang 110036, China; Yingkou Institute of Technology, Yingkou 115014, China.
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Tanaka S, Adachi K. Label-free colorimetric analysis strategies based on adsorption-responsive surface-enhanced photochromic phenomena of tungsten(VI) oxide nanoparticles for amino acids. ANAL SCI 2024:10.1007/s44211-024-00607-6. [PMID: 38836971 DOI: 10.1007/s44211-024-00607-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 05/18/2024] [Indexed: 06/06/2024]
Abstract
Herein, we present a colorimetric detection method based on the surface-enhanced photochromic phenomenon of tungsten (VI) oxide (WO3) nanocolloid particles for α-amino acid (AA) molecules, including L-aspartic acid (Asp), L-glutamic acid (Glu), L-histidine (His), L-isoleucine (Ile), L-leucine (Leu), L-lysine (Lys), L-phenylalanine (Phe), and L-valine (Val). The UV-induced photochromic phenomena in the AA/WO3 binary aqueous systems were investigated using UV-Vis absorption spectrometry. The adsorption properties of the AA molecules on the surface of the WO3 nanocolloid particles have been identified using a combination of adsorption isotherm analysis and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy. A good linear correlation between the concentration of the AAs adsorbed on the surface of the WO3 nanocolloid particles and the initial photochromic coloration rate in the corresponding UV-irradiated WO3 colloidal aqueous solution was obtained with over three orders of magnitude, indicating that the surface-enhanced photochromic phenomenon of the WO3 nanocolloid particle can be used to detect the AA molecules. In addition, based on the results of the UV-Vis absorption, ATR-FTIR, and adsorption isotherm analyses, we have experimentally demonstrated that the AA/WO3 binary aqueous system with inner-sphere adsorbed Ile, Leu, Lys, or Val molecules on the surface of the WO3 nanocolloid particles exhibits a more significant surface-enhanced photochromic phenomenon than the system with outer-sphere adsorbed Asp, Glu, His, or Phe molecules. The strong inner-sphere adsorption of the AA molecules successfully improved the limit of detection. This study provides valuable insights into a "label-free" colorimetric assay system based on the surface-enhanced photochromic phenomenon of the WO3 nanocolloid probe.
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Affiliation(s)
- Shohei Tanaka
- Department of Chemistry, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan
| | - Kenta Adachi
- Department of Chemistry, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, 753-8512, Japan.
- Opto-Energy Research Center, Yamaguchi University, Yamaguchi, 753-8511, Japan.
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3
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Rajamanikandan R, Sasikumar K, Kosame S, Ju H. Optical Sensing of Toxic Cyanide Anions Using Noble Metal Nanomaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13020290. [PMID: 36678042 PMCID: PMC9863761 DOI: 10.3390/nano13020290] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/05/2023] [Accepted: 01/05/2023] [Indexed: 06/12/2023]
Abstract
Water toxicity, one of the major concerns for ecosystems and the health of humanity, is usually attributed to inorganic anions-induced contamination. Particularly, cyanide ions are considered one of the most harmful elements required to be monitored in water. The need for cyanide sensing and monitoring has tempted the development of sensing technologies without highly sophisticated instruments or highly skilled operations for the objective of in-situ monitoring. Recent decades have witnessed the growth of noble metal nanomaterials-based sensors for detecting cyanide ions quantitatively as nanoscience and nanotechnologies advance to allow nanoscale-inherent physicochemical properties to be exploited for sensing performance. Particularly, noble metal nanostructure e-based optical sensors have permitted cyanide ions of nanomolar levels, or even lower, to be detectable. This capability lends itself to analytical application in the quantitative detection of harmful elements in environmental water samples. This review covers the noble metal nanomaterials-based sensors for cyanide ions detection developed in a variety of approaches, such as those based on colorimetry, fluorescence, Rayleigh scattering (RS), and surface-enhanced Raman scattering (SERS). Additionally, major challenges associated with these nano-platforms are also addressed, while future perspectives are given with directions towards resolving these issues.
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Nayak J, Prajapati KS, Kumar S, Sahoo SK, Kumar R. Synthesis of thiolated chlorogenic acid-capped silver nanoparticles for the effective dual action towards antimicrobial and anticancer therapy. Colloid Polym Sci 2022. [DOI: https:/doi.org/10.1007/s00396-022-05010-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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5
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Nayak J, Prajapati KS, Kumar S, Sahoo SK, Kumar R. Synthesis of thiolated chlorogenic acid-capped silver nanoparticles for the effective dual action towards antimicrobial and anticancer therapy. Colloid Polym Sci 2022. [DOI: https://doi.org/10.1007/s00396-022-05010-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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6
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Synthesis of thiolated chlorogenic acid-capped silver nanoparticles for the effective dual action towards antimicrobial and anticancer therapy. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05010-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Tarannum N, Kumar D, Kumar N. β‐Cyclodextrin‐Based Nanocomposite Derivatives: State of the Art in Synthesis, Characterization and Application in Molecular Recognition. ChemistrySelect 2022. [DOI: 10.1002/slct.202200140] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Nazia Tarannum
- Department of Chemistry Chaudhary Charan Singh University Meerut 250004 India
| | - Deepak Kumar
- Department of Chemistry Chaudhary Charan Singh University Meerut 250004 India
| | - Nitin Kumar
- Department of Chemistry Chaudhary Charan Singh University Meerut 250004 India
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Rajamanikandan R, Ilanchelian M. Simple smartphone merged rapid colorimetric platform for the environmental monitoring of toxic sulfide ions by cysteine functionalized silver nanoparticles. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107071] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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9
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Jiang C, Bai Z, Yuan F, Ruan Z, Wang W. A colorimetric sensor based on Glutathione-AgNPs as peroxidase mimetics for the sensitive detection of Thiamine (Vitamin B1). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 265:120348. [PMID: 34507032 DOI: 10.1016/j.saa.2021.120348] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/31/2021] [Accepted: 08/29/2021] [Indexed: 06/13/2023]
Abstract
A label-free sensing strategy based on the enzyme-mimicking property of Glutathione-Ag nanoparticles (GSH-AgNPs) was demonstrated for colorimetric detection of vitamin B1 (VB1). Firstly, obvious blue color accompanied with an absorption peak at 652 nm was observed due to the high peroxidase-like activity of GSH-AgNPs towards 3,3',5,5'-tetramethylbenzidine (TMB). Then, in the presence of VB1, the mimetic activity of GSH-AgNPs could be strongly restrained, evidenced as a promiment colorimetric change to colorless, which can be used to achieve the visualization detection VB1. Linear relationship between absorbance response and VB1 concentration from 0 to 0.2 µM were obtained. The detection limit was calculated as low as 40 nM. The inhibition reasons were thoroughly discussed. Considering the advantages of rapid response, easy procedure and high selectivity, the proposed method possesses potential application in environment and biological analysis for VB1 detection.
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Affiliation(s)
- Cuifeng Jiang
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
| | - Ziyan Bai
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
| | - Fan Yuan
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
| | - Zhifan Ruan
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
| | - Wei Wang
- School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China.
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Zhang Y, Li Z, Meng S, Dong A, Yang YW. Silver nanoparticles modified by water-soluble leaning tower[6]arenes for sensing and catalysis. Chem Commun (Camb) 2021; 58:649-652. [PMID: 34913937 DOI: 10.1039/d1cc06079a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A carboxylated leaning tower[6]arene sodium salt is used as an efficient stabiliser for the one-pot synthesis of silver nanoparticles. The resulting hybrid material with good dispersion, excellent stability and narrow size distribution could serve as a multifunctional platform for sensing and catalysis applications.
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Affiliation(s)
- Yinan Zhang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
| | - Zheng Li
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
| | - Suriguga Meng
- College of Chemistry and Chemical Engineering Engineering Research Center of Dairy Quality and Safety Control Technology Ministry of Education Inner Mongolia University, Hohhot 010021, P. R. China
| | - Alideertu Dong
- College of Chemistry and Chemical Engineering Engineering Research Center of Dairy Quality and Safety Control Technology Ministry of Education Inner Mongolia University, Hohhot 010021, P. R. China
| | - Ying-Wei Yang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China.
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11
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Direct quantification of cysteine and glutathione by 1H NMR based on β-cyclodextrin modified silver nanoparticles. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Maruthupandi M, Vasimalai N. Nanomolar detection of L-cysteine and Cu2+ ions based on Trehalose capped silver nanoparticles. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105782] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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D. A, P. N, R. R, M. VK. Development of hydrazide based fluorescence probe for detection of Al3+ ions and application in live cell image. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112921] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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14
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Glutathione functionalized copper nanoclusters as a fluorescence platform for specific biosensing of cysteine and application in cellular imaging. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105253] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Khan SA, Choudhury R, Majumdar M, Misra TK. Development of dual-tool nanosensor for cysteine based on N-(1-naphthyl)ethylenediamine cation functionalized silver nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 234:118240. [PMID: 32172188 DOI: 10.1016/j.saa.2020.118240] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/05/2020] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
In an accomplishment of development of silver nanoparticles (AgNPs) based nanosensor for cysteine in its anionic and neutral forms, we have preferred N-(1-naphthyl)ethylenediamine cation (NEDA+) stabilized AgNPs (NEDA-AgNPs), because NEDA+ is a fluorescent active ion and it imparts excellent stability to AgNPs. Surface Plasmon resonance (SPR) of AgNPs and fluorescence property of NEDA+ are thus useful for presenting NEDA-AgNPs as a dual-tool nanosensor for cysteine molecules. The surface adsorbed NEDA+ cations interact selectively with cysteine as a consequence, the particles get aggregated, which was monitored using spectrophotometric method. The fluorescence property of NEDA+ is heavily quenched in NEDA-AgNPs, which could be reversed in presence of cysteine. The spectrofluorimetric method was thus used for quantification of cysteine as well. The detection limits (LOD to LOL) of anionic cysteine are 0.1784-1.598 μM and 0.0842-2.0 μM, respectively in spectrophotometric and spectrofluorimetric methods. From a real sample matrix, the recovery results are excellent, >95%. For neutral cysteine, the sensitivity is a bit low; 0.308-2.8 μM for spectrophotometric and 0.131-2.8 μM for spectrofluorimetric methods. It is found that the anionic cysteine (Kasso = 2.24 × 105 M-1/4.02 × 105 M-1) binds surface adsorbed NEDA+ cations strongly than that of neutral cysteine (Kasso = 3.69 × 104 M-1/1.24 × 105 M-1). Thus, NEDA-AgNPs show its potentials for being a dual-tool nanosensor as well as dual-form nanosensor for quantification of cysteine in a sample which may be the attractive system to an analyst.
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Affiliation(s)
- Shamim Ahmed Khan
- Department of Chemistry, National Institute of Technology Agartala, Agartala, Tripura 799046, India
| | - Rupasree Choudhury
- Department of Chemistry, National Institute of Technology Agartala, Agartala, Tripura 799046, India
| | - Moumita Majumdar
- Department of Chemistry, National Institute of Technology Agartala, Agartala, Tripura 799046, India
| | - Tarun Kumar Misra
- Department of Chemistry, National Institute of Technology Agartala, Agartala, Tripura 799046, India.
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16
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Rajamanikandan R, Lakshmi AD, Ilanchelian M. Smart phone assisted, rapid, simplistic, straightforward and sensitive biosensing of cysteine over other essential amino acids by β-cyclodextrin functionalized gold nanoparticles as a colorimetric probe. NEW J CHEM 2020. [DOI: 10.1039/d0nj02152k] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Herein, we have attempted the synthesis of β-CD functionalized AuNPs and then applied them as a colorimetric assay for the quantification of Cys over other different essential amino acids.
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17
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Shi Y, Sun C, Gao X, Zhao W, Zhou N. Sensitively and Selectively Detect Biothiols by Using Fluorescence Method and Resonance Light Scattering Technique Simultaneously. Molecules 2019; 24:molecules24224136. [PMID: 31731646 PMCID: PMC6891520 DOI: 10.3390/molecules24224136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 02/06/2023] Open
Abstract
In this paper, we designed a new quantitative and qualitive detection method for biothiols by using fluorescence method and resonance light scattering (RLS) technique. Nitrogen doped carbon quantum dots (C/N-dots) were obtained from tartaric acid and ethylenediamine by hydrothermal method, and then their morphology and optical properties were characterized by different techniques. A detection system consisting of C/N-dots and Ag+ complex was established. In this system, C/N-dots possessed the photoluminescent property and the Ag+ complex owned the RLS property, so, by combining the two luminescent properties to achieve complementary advantages, we could detect biothiols and solve the problem of distinguishing between Cys and GSH. Additionally, we optimized detecting conditions and investigated the detection mechanism of fluorescence quenching and RLS detecting. Results showed that the analytical response of fluorescence was linear in the range 0–140 μM and the detection limit (LOD) was calculated to be 6.6 μM for Cys, and the addition of GSH had no effect on fluorescence. RLS response ranges were 0–167 μM for Cys and 0–200 μM for GSH, with LOD down to 64 nM and 74 nM, respectively. Furthermore, the probe was successfully used for detecting Cys in fetal bovine serum (FBS) samples by fluorescence method, and also, by RLS technique, the content of GSH in FBS samples was detected.
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Affiliation(s)
- Yanping Shi
- Department of Chemistry, Northeast Agricultural University, Harbin 150025, China; (Y.S.); (C.S.); (X.G.)
| | - Chao Sun
- Department of Chemistry, Northeast Agricultural University, Harbin 150025, China; (Y.S.); (C.S.); (X.G.)
| | - Xiaoqi Gao
- Department of Chemistry, Northeast Agricultural University, Harbin 150025, China; (Y.S.); (C.S.); (X.G.)
| | - Wei Zhao
- Department of Physiology, Hei Longjiang University of Chinese Medicine, Harbin 150040, China;
| | - Nan Zhou
- Department of Chemistry, Northeast Agricultural University, Harbin 150025, China; (Y.S.); (C.S.); (X.G.)
- Correspondence: ; Tel.: +86-137-6687-3464
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18
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ul Ain N, Aslam Z, Yousuf M, Waseem WA, Bano S, Anis I, Ahmed F, Faizi S, Malik MI, Shah MR. Green synthesis of methyl gallate conjugated silver nanoparticles: a colorimetric probe for gentamicin. NEW J CHEM 2019. [DOI: 10.1039/c8nj04565h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient colorimetric sensor for gentamicin is proposed based on methyl gallate conjugated silver nanoparticles.
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Affiliation(s)
- Noor ul Ain
- Department of Chemistry
- University of Karachi
- Karachi 75270
- Pakistan
| | - Zara Aslam
- H.E.J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi 75270
- Pakistan
| | - Muhammad Yousuf
- H.E.J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi 75270
- Pakistan
| | | | - Samina Bano
- H.E.J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi 75270
- Pakistan
| | - Itrat Anis
- Department of Chemistry
- University of Karachi
- Karachi 75270
- Pakistan
| | - Farid Ahmed
- Department of Chemistry
- Women University of Azad Jammu and Kashmir Bagh
- Pakistan
| | - Shaheen Faizi
- H.E.J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi 75270
- Pakistan
| | - Muhammad Imran Malik
- H.E.J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi 75270
- Pakistan
| | - Muhammad Raza Shah
- H.E.J. Research Institute of Chemistry
- International Center for Chemical and Biological Sciences
- University of Karachi
- Karachi 75270
- Pakistan
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Rajamanikandan R, Ilanchelian M. Fluorescence Sensing Approach for High Specific Detection of 2,4,6-Trinitrophenol Using Bright Cyan Blue Color-Emittive Poly(vinylpyrrolidone)-Supported Copper Nanoclusters as a Fluorophore. ACS OMEGA 2018; 3:18251-18257. [PMID: 31458403 PMCID: PMC6644161 DOI: 10.1021/acsomega.8b03065] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 12/12/2018] [Indexed: 05/23/2023]
Abstract
In this paper, we illustrate an efficient, convenient, and simplistic fluorescence technique for the specific identification for nitro explosive 2,4,6-trinitrophenol (TNP) in 100% water medium by bright cyan blue color-emitting poly(vinylpyrrolidone)-supported copper nanoclusters (PVP-CuNCs) as a fluorescence probe. PVP-CuNCs exhibited linear fluorescence quenching response toward the increasing concentration of TNP analyte. Surprisingly, TNP only reduces the emission signal of PVP-CuNCs, whereas various nitro explosives cause very slight reducing emission intensity, validating the good specificity of the PVP-CuNC probe toward TNP. The highest Stern-Volmer quenching constant (K sv) value of 1.03 × 107 dm3 mol-1 and the extremely lowest limit of detection of 81.44 × 10-12 mol dm-3 were achieved solely for TNP in 100% water medium which is astonishing and exclusive for this nanoprobe. The sensing pathway for the high sensitivity of PVP-CuNCs assay to quantify the TNP is expected to combine with the inner filter effect process and static quenching. The static quenching mechanism between TNP and PVP-CuNCs is further verified by fluorescence decay measurements. Furthermore, the developed fluorescence sensing platform is applied for the quantification of a trace amount of TNP in real samples named dam water, sea water, and match stick.
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