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Muthusamy S, Zhao L, Rajalakshmi K, Zhu D, Wang S, Mack J, Lee KB, Zhang L, Zhu W. Quantitative Hg 2+ detection via forming three coordination complexes using a lysosome targeting quinoline - Fisher aldehyde fluorophore. Talanta 2022; 236:122884. [PMID: 34635264 DOI: 10.1016/j.talanta.2021.122884] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/03/2021] [Accepted: 09/12/2021] [Indexed: 11/24/2022]
Abstract
This work describes (Z)-N-((Z)-2-(1,3,3-trimethylindolin-2ylidene)ethylidene)quinoline-8-amine (LYSO-QF), a high-performing and biocompatible dye comprised of quinoline and Fisher aldehyde moieties linked via an imine vinyl backbone with lysosome targeting ability that can be used to quantitatively detect the mercury ion (Hg2+) in biosystems and the natural environment. This is achieved by forming three different tetrameric, trimeric and dimeric complexes between Hg2+ and LYSO-QF with the limit of detection (LOD) of 11 nm. The complexes formed were analyzed with the aid of time-dependent density functional theory (TD-DFT) calculations. The concentration dependence of the Hg2+ complex fluorescence emission changes from grey-green to jade green and then to red as the different types of complex are formed. The favorable sensor properties of the LYSO-QF probe are demonstrated by monitoring different Hg2+ concentrations in buffer solutions, HeLa cells, zebrafish model samples and several different types of water sample. Experiments with Whatman paper strips demonstrate that the cost-effective LYSO-QF also has considerable potential for use in on-site Hg2+ detection with the naked eye.
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Affiliation(s)
- Selvaraj Muthusamy
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Long Zhao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Kanagaraj Rajalakshmi
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Dongwei Zhu
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, 212013, China; Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, 212013, China
| | - Shengjun Wang
- Department of Laboratory Medicine, The Affiliated People's Hospital, Jiangsu University, Zhenjiang, 212013, China; Department of Immunology, Jiangsu Key Laboratory of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang, 212013, China
| | - John Mack
- Institute for Nanotechnology Innovation, Department of Chemistry, Rhodes University, Makhanda, 6140, South Africa
| | - Kang-Bong Lee
- National Agenda Research Division, Korea Institute of Science & Technology, Hwarang-ro 14-gil 5 Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Long Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Weihua Zhu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China.
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2
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Kumar A, Sardhalia V, Sahoo PR, Kumar A, Kumar S. Structure analysis and evaluation of two probes for the colorimetric detection of Hg2+ and turn-on fluorescence-based detection of Cd2+ ions in an aqueous solution. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130233] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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3
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Filling in nanoporous gold with silver via bulk deposition and surface-limited redox replacement approaches. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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4
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Hou Y, Chen Y, Guo X, Liu W, Zhang L, Lv C, Xu Y, Jin Y, Li B. Aggregation-induced chemiluminescence system for sensitive detection of mercury ions. Anal Bioanal Chem 2020; 413:625-633. [PMID: 33155131 DOI: 10.1007/s00216-020-03033-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/19/2020] [Accepted: 10/27/2020] [Indexed: 11/24/2022]
Abstract
As mercury ions (Hg2+) are emanated to surroundings in the course of various natural events and human activities, an accurate sensing of Hg2+ is essential for human health and environmental protection. Herein, a new aggregation-induced chemiluminescence (CL) sensor for fast, sensitive, and selective detection of Hg2+ is developed, based on the CL enhancement of bis(2,4,6-trichlorophenyl)oxalate (TCPO)-H2O2 system by thiolate-protected gold complexes (Au(I)-thiolate complexes) in the aggregated state. Because Hg2+ has a strong interaction with hydrosulfuryl (-SH) groups in Au(I)-thiolate complexes, the aggregation is disrupted and the CL is quenched. The decrease of CL intensity is proportional to Hg2+ contents with a linear range of 0.005-10 μg mL-1 and the limit of detection (LOD) is 3 ng mL-1. To the best of our knowledge, this is the first AIE CL sensor for Hg2+ detection. The study opens up attractive perspectives for developing simple and rapid aggregation-induced CL methods in monitoring heavy metals.
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Affiliation(s)
- Yue Hou
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Shaanxi, 710062, Xi'an, China
| | - Ying Chen
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Shaanxi, 710062, Xi'an, China
| | - Xiaoyan Guo
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Shaanxi, 710062, Xi'an, China
| | - Wei Liu
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Shaanxi, 710062, Xi'an, China.
| | - Liu Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Shaanxi, 710062, Xi'an, China
| | - Congcong Lv
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Shaanxi, 710062, Xi'an, China
| | - Yunlong Xu
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Shaanxi, 710062, Xi'an, China
| | - Yan Jin
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Shaanxi, 710062, Xi'an, China
| | - Baoxin Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Shaanxi, 710062, Xi'an, China
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5
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Ghosh T, Chatterjee S, Bhayani K, Mishra S. A natural cyanobacterial protein C-phycoerythrin as an Hg2+ selective fluorescent probe in aqueous systems. NEW J CHEM 2020. [DOI: 10.1039/d0nj01059f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
C-phycoerythrin (CPE) as a natural protein-based fluorescence ‘turn off’ probe for Hg2+ in aqueous systems.
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Affiliation(s)
- Tonmoy Ghosh
- Applied Phycology and Biotechnology Division
- CSIR-Central Salt & Marine Chemicals Research Institute, Gijubhai Badheka Marg
- Bhavnagar 364002
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Sobhan Chatterjee
- Academy of Scientific and Innovative Research (AcSIR)
- Ghaziabad 201002
- India
- Salt and Marine Chemicals Division
- CSIR-Central Salt & Marine Chemicals Research Institute, Gijubhai Badheka Marg
| | - Khushbu Bhayani
- Applied Phycology and Biotechnology Division
- CSIR-Central Salt & Marine Chemicals Research Institute, Gijubhai Badheka Marg
- Bhavnagar 364002
- India
| | - Sandhya Mishra
- Applied Phycology and Biotechnology Division
- CSIR-Central Salt & Marine Chemicals Research Institute, Gijubhai Badheka Marg
- Bhavnagar 364002
- India
- Academy of Scientific and Innovative Research (AcSIR)
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6
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Zheng X, Zhang L, Huang L, Li W, Ma C, Song R, Chen L, Zeng H. Optical Sensor Assistant with Voltage Enrichment for Ultrasensitive Detection of Mercury Ions. ACS OMEGA 2019; 4:6175-6179. [PMID: 31459762 PMCID: PMC6648984 DOI: 10.1021/acsomega.8b03505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 03/22/2019] [Indexed: 06/10/2023]
Abstract
Voltage enrichment-assisted surface-enhanced resonance Raman scattering (SERRS) was employed for monitoring mercury(II) ions based on a nanoporous gold (NPG)/aptamer hybrid sensor. The hybrid sensor based on the coordination chemistry of thymine-Hg2+-thymine interaction and an applied voltage that pushed mercury ions toward the NPG film improved both the speed and sensitivity of Hg2+ ion detection. The detection limit can reach 0.1 pM, even in the aqueous solution containing 13 metal ions, and the sensor also possesses a fine reproducibility and stability, promising great potential in real-time sensing applications.
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Affiliation(s)
- Xuejian Zheng
- Shanghai
Key Laboratory of Modern Optical System, Engineering Research Center
of Optical Instrument and System (Ministry of Education), School of
Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People’s Republic of China
| | - Ling Zhang
- Shanghai
Key Laboratory of Modern Optical System, Engineering Research Center
of Optical Instrument and System (Ministry of Education), School of
Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People’s Republic of China
- Yangtze
Delta Region Institute of Tsinghua University, Jiaxing, Zhejiang 314000, China
| | - Luyi Huang
- Shanghai
Key Laboratory of Modern Optical System, Engineering Research Center
of Optical Instrument and System (Ministry of Education), School of
Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People’s Republic of China
| | - Wei Li
- Shanghai
Key Laboratory of Modern Optical System, Engineering Research Center
of Optical Instrument and System (Ministry of Education), School of
Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People’s Republic of China
| | - Chao Ma
- Shanghai
Key Laboratory of Modern Optical System, Engineering Research Center
of Optical Instrument and System (Ministry of Education), School of
Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People’s Republic of China
| | - Ruirui Song
- Yangtze
Delta Region Institute of Tsinghua University, Jiaxing, Zhejiang 314000, China
| | - Luyang Chen
- Key
Laboratory for Ultrafine Materials of Ministry of Education, School
of Materials Science and Engineering, East
China University of Science and Technology, Shanghai 200237, China
| | - Heping Zeng
- Shanghai
Key Laboratory of Modern Optical System, Engineering Research Center
of Optical Instrument and System (Ministry of Education), School of
Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People’s Republic of China
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7
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Thakur N, Mandal N, Banerjee UC. Esterase-Mediated Highly Fluorescent Gold Nanoclusters and Their Use in Ultrasensitive Detection of Mercury: Synthetic and Mechanistic Aspects. ACS OMEGA 2018; 3:18553-18562. [PMID: 31458426 PMCID: PMC6643912 DOI: 10.1021/acsomega.8b02505] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 12/17/2018] [Indexed: 06/10/2023]
Abstract
The fast, accurate, and ultrasensitive detection of toxic mercury in real water samples is still challenging without the use of expensive sophisticated instruments. Herein, highly fluorescent gold nanoclusters (AuNCs) were synthesized using a newer protein templet, esterase (EST). The EST-AuNCs consisted of ∼25 Au atoms in the nanocluster having ∼2 nm size. EST-AuNCs were found to be highly stable in aqueous buffer with a wide range of pH (pH 4-12) and were also stable in powdered form. The fluorescence quantum yield of EST-AuNCs in deionized water was 6.2% which had increased to 7.8% upon the addition of 1 M NaCl (an increase of 23%). The EST-AuNCs selectively sense the toxic Hg2+ ions with higher sensitivity (limit of detection; 0.88 nM) with the linear range 1-30 nM. The test strips for rapid sensing of Hg2+ in real water samples were developed on the polymeric surface. The validation of sensing ability of EST-AuNCs suggested 94-98% recovery with linearity. Moreover, because of the widely reported applications of EST, the developed EST-AuNCs could also be used for another sensing, catalytic, and biomedical applications.
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Affiliation(s)
| | | | - Uttam C. Banerjee
- Department of Pharmaceutical Technology
(Biotechnology), National Institute of Pharmaceutical
Education and Research (NIPER), Sector-67, S.A.S. Nagar 160062, Punjab, India
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8
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Mukhopadhyay S, Mehta R, Paidi MK, Mandal SK, Bhattacharya A. Development of Hg2+ colorimetric sensor using polymeric membrane. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1547762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Sarbartha Mukhopadhyay
- Marine Biotechnology and Phycology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), Bhavnagar, Gujarat, India
| | - Romil Mehta
- Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), Bhavnagar, Gujarat, India
| | - Murali Krishna Paidi
- Marine Biotechnology and Phycology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), Bhavnagar, Gujarat, India
| | - Subir Kumar Mandal
- Marine Biotechnology and Phycology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), Bhavnagar, Gujarat, India
| | - A. Bhattacharya
- Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), Bhavnagar, Gujarat, India
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9
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Yang H, Zhao J, Qiu M, Sun P, Han D, Niu L, Cui G. Hierarchical bi-continuous Pt decorated nanoporous Au-Sn alloy on carbon fiber paper for ascorbic acid, dopamine and uric acid simultaneous sensing. Biosens Bioelectron 2018; 124-125:191-198. [PMID: 30388561 DOI: 10.1016/j.bios.2018.10.012] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 10/07/2018] [Accepted: 10/08/2018] [Indexed: 10/28/2022]
Abstract
In this work, Pt nanoparticles modified nanoporous AuSn(Pt@NP-AuSn) alloy on Ni buffered flexible carbon fiber paper (CFP) is fabricated by a simple replacement reaction in which NP-AuSn is fabricated by controllable dealloy of electrodeposited Au-Sn alloy films. The as prepared Pt@NP-AuSn/Ni/CFP possesses hierarchical pore structure, high specific surface area and excellent catalytic activity. Due to the bi-functions of both the large surface area of nanoporous metal and macroporous of carbon fiber paper facilitating mass transfer, the Pt@NP-AuSn/Ni/CFP shows high sensitivity of detecting ascorbic acid (AA), dopamine (DA) and uric acid (UA), with sensitivities of 0.14 μA μM-1 cm-2, 15.23 μA μM-1 cm-2, 0.28 μA μM-1 cm-2 under the concentration ranging from 200 to 2000 μM, 1-10 μM, and 25-800 μM for AA, DA and UA, respectively. Further, the Pt@NP-AuSn/Ni/CFP possesses long-term stability of sensing AA, DA and UA and presents great anti-interference towards a variety of common compounds in body fluid. All of these results manifest the Pt@NP-AuSn/Ni/CFP can be a promising candidate for the application of the electrochemical sensor for simultaneous detection of AA, DA and UA.
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Affiliation(s)
- Han Yang
- Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, PR China; Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Jie Zhao
- School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Meijia Qiu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-Carbon Chemistry and Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-sen University, 135, Xingang West Road, Guangzhou 510275, PR China
| | - Peng Sun
- Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, PR China; Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou 510275, PR China.
| | - Dongxue Han
- Center for Advanced Analytical Science, c/o School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, PR China; State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, 130022, Jilin, PR China.
| | - Li Niu
- Center for Advanced Analytical Science, c/o School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, PR China; State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, 130022, Jilin, PR China
| | - Guofeng Cui
- Key Laboratory for Polymeric Composite & Functional Materials of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, PR China; Key Laboratory of Low-carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou 510275, PR China.
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10
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Li R, Petschek RG, Han J, Huang M. Effect of different analyte diffusion/adsorption protocols on SERS signals. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1459003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Ruoping Li
- School of Physics and Electronics, Henan University, Kaifeng, China
| | - Rolfe G. Petschek
- Department of Physics, Case Western Reserve University, Cleveland, OH, USA
| | - Junhe Han
- School of Physics and Electronics, Henan University, Kaifeng, China
| | - Mingju Huang
- School of Physics and Electronics, Henan University, Kaifeng, China
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11
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Chatterjee A, Banerjee M, Khandare DG, Gawas RU, Mascarenhas SC, Ganguly A, Gupta R, Joshi H. Aggregation-Induced Emission-Based Chemodosimeter Approach for Selective Sensing and Imaging of Hg(II) and Methylmercury Species. Anal Chem 2017; 89:12698-12704. [DOI: 10.1021/acs.analchem.7b02663] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Amrita Chatterjee
- Department
of Chemistry, and ‡Department of Biological Sciences, BITS, Pilani, Goa Campus, NH
17B Bypass Road, Zuarinagar, Goa 403726, India
| | - Mainak Banerjee
- Department
of Chemistry, and ‡Department of Biological Sciences, BITS, Pilani, Goa Campus, NH
17B Bypass Road, Zuarinagar, Goa 403726, India
| | - Dipratn G. Khandare
- Department
of Chemistry, and ‡Department of Biological Sciences, BITS, Pilani, Goa Campus, NH
17B Bypass Road, Zuarinagar, Goa 403726, India
| | - Ram U. Gawas
- Department
of Chemistry, and ‡Department of Biological Sciences, BITS, Pilani, Goa Campus, NH
17B Bypass Road, Zuarinagar, Goa 403726, India
| | - Starlaine C. Mascarenhas
- Department
of Chemistry, and ‡Department of Biological Sciences, BITS, Pilani, Goa Campus, NH
17B Bypass Road, Zuarinagar, Goa 403726, India
| | - Anasuya Ganguly
- Department
of Chemistry, and ‡Department of Biological Sciences, BITS, Pilani, Goa Campus, NH
17B Bypass Road, Zuarinagar, Goa 403726, India
| | - Rishabh Gupta
- Department
of Chemistry, and ‡Department of Biological Sciences, BITS, Pilani, Goa Campus, NH
17B Bypass Road, Zuarinagar, Goa 403726, India
| | - Hrishikesh Joshi
- Department
of Chemistry, and ‡Department of Biological Sciences, BITS, Pilani, Goa Campus, NH
17B Bypass Road, Zuarinagar, Goa 403726, India
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12
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Li R, Li Y, Han J, Huang M. In situ SERS monitoring of plasmonic nano-dopants during photopolymerization. OPTICS LETTERS 2017; 42:1712-1715. [PMID: 28454142 DOI: 10.1364/ol.42.001712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The motion of the plasmonic nano-dopant in photopolymers was monitored in situ and in real time using the surface-enhanced Raman scattering (SERS) technique. Here an Au@MBA@Ag (core-molecule-shell) nanoparticle colloid was synthesized to act as the nano-dopant and adsorbed 4-mercaptobenzoic acid (MBA) between the Au cells and Ag shells as the internal standard. The changes of the MBA signal closely reflect the motion of nanoparticles, since the MBA signal itself has time stability. Experimental data indicate that the optimized concentration of the nano-dopant can be obtained based on the peak intensity change of MBA at 1583 cm-1. This Letter provides a novel way for in situ monitoring of photophysicial and photochemical processes.
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13
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Li Y, Liu N, Liu H, Wang Y, Hao Y, Ma X, Li X, Huo Y, Lu J, Tang S, Wang C, Zhang Y, Gao Z. A novel label-free fluorescence assay for one-step sensitive detection of Hg 2+ in environmental drinking water samples. Sci Rep 2017; 7:45974. [PMID: 28378768 PMCID: PMC5380999 DOI: 10.1038/srep45974] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 03/07/2017] [Indexed: 01/11/2023] Open
Abstract
A novel label-free fluorescence assay for detection of Hg2+ was developed based on the Hg2+-binding single-stranded DNA (ssDNA) and SYBR Green I (SG I). Differences from other assays, the designed rich-thymine (T) ssDNA probe without fluorescent labelling can be rapidly formed a T-Hg2+-T complex and folded into a stable hairpin structure in the presence of Hg2+ in environmental drinking water samples by facilitating fluorescence increase through intercalating with SG I in one-step. In the assay, the fluorescence signal can be directly obtained without additional incubation within 1 min. The dynamic quantitative working ranges was 5–1000 nM, the determination coefficients were satisfied by optimization of the reaction conditions. The lowest detection limit of Hg2+ was 3 nM which is well below the standard of U.S. Environmental Protection Agency. This method was highly specific for detecting of Hg2+ without being affected by other possible interfering ions from different background compositions of water samples. The recoveries of Hg2+ spiked in these samples were 95.05–103.51%. The proposed method is more viable, low-costing and simple for operation in field detection than the other methods with great potentials, such as emergency disposal, environmental monitoring, surveillance and supporting of ecological risk assessment and management.
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Affiliation(s)
- Ya Li
- School of Public Health, Lanzhou University, Lanzhou 73000, P. R. China.,Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Health and Environmental Medicine, Tianjin, 300050, P. R. China
| | - Nan Liu
- School of Public Health, Lanzhou University, Lanzhou 73000, P. R. China.,Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Health and Environmental Medicine, Tianjin, 300050, P. R. China.,School of Public Health, State Ministry of Education, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China.,Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Hui Liu
- School of Public Health, Lanzhou University, Lanzhou 73000, P. R. China
| | - Yu Wang
- School of Public Health, Lanzhou University, Lanzhou 73000, P. R. China
| | - Yuwei Hao
- School of Public Health, Lanzhou University, Lanzhou 73000, P. R. China
| | - Xinhua Ma
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Health and Environmental Medicine, Tianjin, 300050, P. R. China
| | - Xiaoli Li
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Health and Environmental Medicine, Tianjin, 300050, P. R. China
| | - Yapeng Huo
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Health and Environmental Medicine, Tianjin, 300050, P. R. China
| | - Jiahai Lu
- School of Public Health, State Ministry of Education, Sun Yat-sen University, Guangzhou, Guangdong, 510080, P. R. China
| | - Shuge Tang
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Health and Environmental Medicine, Tianjin, 300050, P. R. China.,Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Caiqin Wang
- School of Public Health, Lanzhou University, Lanzhou 73000, P. R. China.,Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Health and Environmental Medicine, Tianjin, 300050, P. R. China
| | - Yinhong Zhang
- School of Public Health, Lanzhou University, Lanzhou 73000, P. R. China
| | - Zhixian Gao
- Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment and Food Safety, Tianjin Institute of Health and Environmental Medicine, Tianjin, 300050, P. R. China
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