1
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Punnoose MS, Mathew B. Unmodified Green Silver Nanoparticles as Multisensor for Zn
2+
and Catalyst for Environmental Remediation. ChemistrySelect 2021. [DOI: 10.1002/slct.202100091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Beena Mathew
- School of Chemical Sciences Mahatma Gandhi University Kottayam India
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2
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Zhou X, Wang Y, Peng Q, Liu W. A Resumable Fluorescent Probe BHN-Fe 3O 4@SiO 2 Hybrid Nanostructure for Fe 3+ and its Application in Bioimaging. NANOSCALE RESEARCH LETTERS 2017; 12:629. [PMID: 29260416 PMCID: PMC5736514 DOI: 10.1186/s11671-017-2392-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Accepted: 11/30/2017] [Indexed: 06/07/2023]
Abstract
A multifunctional fluorescent probe BHN-Fe3O4@SiO2 nanostructure for Fe3+ was designed and developed. It has a good selective response to Fe3+ with fluorescence quenching and can be recycled using an external magnetic field. With adding EDTA (2.5 × 10-5 M) to the consequent product Fe3+-BHN-Fe3O4@SiO2, Fe3+ can be removed from the complex, and its fluorescence probing ability recovers, which means that this constituted on-off type fluorescence probe could be reversed and reused. At the same time, the probe has been successfully applied for quantitatively detecting Fe3+ in a linear mode with a low limit of detection 1.25 × 10-8 M. Furthermore, the BHN-Fe3O4@SiO2 nanostructure probe is successfully used to detect Fe3+ in living HeLa cells, which shows its great potential in bioimaging detection.
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Affiliation(s)
- Xi Zhou
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Yujiao Wang
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Qi Peng
- Department of Pathogenic Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Weisheng Liu
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China.
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3
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Anand T, Kumar SK A, Sahoo SK. Vitamin B6
Cofactor Derivative: A Dual Fluorescent Turn-On Sensor to Detect Zn2+
and CN−
Ions and Its Application in Live Cell Imaging. ChemistrySelect 2017. [DOI: 10.1002/slct.201701024] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Thangaraj Anand
- Applied Chemistry Department; Sardar Vallabahi National Institute of Technology; Surat, Gujarat- 395007
| | - Ashok Kumar SK
- Materials chemistry Division; School of Advanced Sciences, VIT University; Vellore India- 632014
| | - Suban K Sahoo
- Applied Chemistry Department; Sardar Vallabahi National Institute of Technology; Surat, Gujarat- 395007
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4
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Liu Y, Li Y, Feng Q, Li N, Li K, Hou H, Zhang B. 'Turn-on' fluorescent chemosensors based on naphthaldehyde-2-pyridinehydrazone compounds for the detection of zinc ion in water at neutral pH. LUMINESCENCE 2017; 33:29-33. [PMID: 28681472 DOI: 10.1002/bio.3368] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/01/2017] [Accepted: 05/18/2017] [Indexed: 12/19/2022]
Abstract
A series of naphthaldehyde-2-pyridinehydrazone derivatives were discovered to display interesting 'turn-on' fluorescence response to Zn2+ in 99% water/DMSO (v/v) at pH 7.0. Mechanism study indicated that different substituent groups in the naphthaldehyde moiety exhibited significant influence on the detection of Zn2+ . The electron rich group resulted in longer fluorescence wavelengths but smaller fluorescence enhancement for Zn2+ . Among these compounds, 1 showed the highest fluorescence enhancement of 19-fold with the lowest detection limit of 0.17 μmol/L toward Zn2+ . The corresponding linear range was at least from 0.6 to 6.0 μmol/L. Significantly, 1 showed an excellent selectivity toward Zn2+ over other metal ions including Cd2+ .
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Affiliation(s)
- Yuanyuan Liu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Henan, P. R. China
| | - Yuanyuan Li
- School of Chemical Engineering and Energy, Zhengzhou University, Henan, P. R. China.,College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Henan, P. R. China
| | - Qi Feng
- College of Chemistry and Molecular Engineering, Zhengzhou University, Henan, P. R. China
| | - Na Li
- Department of Pharmacy, Women & Infants Hospital of Zhengzhou, Henan, P. R. China
| | - Kai Li
- College of Chemistry and Molecular Engineering, Zhengzhou University, Henan, P. R. China
| | - Hongwei Hou
- College of Chemistry and Molecular Engineering, Zhengzhou University, Henan, P. R. China
| | - Bing Zhang
- School of Chemical Engineering and Energy, Zhengzhou University, Henan, P. R. China
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5
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Hao C, Liu S, Liang W, Li D, Wang L, He Y. A regenerable fluorescent quantum dot based nanoprobe for zinc(II), and the design of a molecular logic gate. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1543-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Ihsan M, Niaz A, Rahim A, Zaman MI, Arain MB, Sirajuddin, Sharif T, Najeeb M. Biologically synthesized silver nanoparticle-based colorimetric sensor for the selective detection of Zn2+. RSC Adv 2015. [DOI: 10.1039/c5ra17055a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Schematic illustration for the colorimetric detection of Zn2+.
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Affiliation(s)
- Muhammad Ihsan
- Department of Chemistry
- University of Science & Technology
- Bannu
- Pakistan
| | - Abdul Niaz
- Department of Chemistry
- University of Science & Technology
- Bannu
- Pakistan
| | - Abdur Rahim
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM)
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | | | | | - Sirajuddin
- National Center of Excellence in Analytical Chemistry
- University of Sindh
- Jamshoro
- Pakistan
| | - Tehmina Sharif
- Department of Chemistry
- University of Science & Technology
- Bannu
- Pakistan
| | - Memoona Najeeb
- Department of Chemistry
- University of Science & Technology
- Bannu
- Pakistan
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7
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Shehab OR, Mansour AM. Potentiometric multi-walled carbon nanotube Zn-sensor based on a naphthalocyanine neutral carrier: experimental and theoretical studies. RSC Adv 2015. [DOI: 10.1039/c5ra12055a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Naphthalocyanine derivative is incorporated in carbon paste electrode and examined as a neutral carrier for zinc selective electrode.
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Affiliation(s)
- Ola R. Shehab
- Chemistry Department
- Faculty of Science
- Cairo University
- Giza 12613
- Egypt
| | - Ahmed M. Mansour
- Chemistry Department
- Faculty of Science
- Cairo University
- Giza 12613
- Egypt
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8
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Bazrafshan AA, Hajati S, Ghaedi M. Improvement in the performance of a zinc ion-selective potentiometric sensor using modified core/shell Fe3O4@SiO2nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra16572e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
A novel, simple, accurate and sensitive zinc ion-selective potentiometric sensor was fabricated by modifying the surface of Fe3O4@SiO2nanoparticles using a ligand prepared by a coupled reaction between APTMS and 2-H-3-MBA.
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Affiliation(s)
| | - S. Hajati
- Department of Physics
- Yasouj University
- Yasouj 75918-74831
- Iran
| | - M. Ghaedi
- Chemistry Department
- Yasouj University
- Yasouj 75918-74831
- Iran
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9
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Solid contact Zn2+ -selective electrode with low detection limit and stable and reversible potential. OPEN CHEM 2014. [DOI: 10.2478/s11532-013-0390-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractA new solid contact Zn2+ polyvinylchloride membrane sensor with 2-(2-Hydroxy-1-naphthylazo)-1,3,4 -thiadiazole as an ionophore has been prepared. For the electrode construction, ionic liquids, alkylmethylimidazolium chlorides are used as transducer media and as a lipophilic ionic membrane component. The addition of ionic liquid to the membrane phase was found to reduce membrane resistance and determine the potential of an internal reference Ag/AgCl electrode. The electrode with the membrane composition: ionophore: PVC: o-NPOE: ionic liquid in the percentage ratio of (wt.) 1:30:66:3, respectively, exhibited the best performance, having a slope of 29.8 mV decade−1 in the concentration range 3×10−7–1×10−1 M. The detection limit is 6.9×10−8 M. It has a fast response time of 5–7 s and exhibits stable and reproducible potential. It has a fast response time of 5–7 s and exhibits stable and reproducible potential, which does not depend on pH in the range 3.8–8.0. The proposed sensor shows a good and satisfactory selectivity towards Zn2+ ion in comparison with other cations including alkali, alkaline earth, transition and heavy metal ions. It was successfully applied for direct determination of zinc ions in tap water and as an indicator electrode in potentiometric titration of Zn2+ ions with EDTA.
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10
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Abbasi MA, Ibupoto ZH, Hussain M, Khan Y, Khan A, Nur O, Willander M. Potentiometric zinc ion sensor based on honeycomb-like NiO nanostructures. SENSORS 2012. [PMID: 23202217 PMCID: PMC3522970 DOI: 10.3390/s121115424] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study honeycomb-like NiO nanostructures were grown on nickel foam by a simple hydrothermal growth method. The NiO nanostructures were characterized by field emission electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD) techniques. The characterized NiO nanostructures were uniform, dense and polycrystalline in the crystal phase. In addition to this, the NiO nanostructures were used in the development of a zinc ion sensor electrode by functionalization with the highly selective zinc ion ionophore 12-crown-4. The developed zinc ion sensor electrode has shown a good linear potentiometric response for a wide range of zinc ion concentrations, ranging from 0.001 mM to 100 mM, with sensitivity of 36 mV/decade. The detection limit of the present zinc ion sensor was found to be 0.0005 mM and it also displays a fast response time of less than 10 s. The proposed zinc ion sensor electrode has also shown good reproducibility, repeatability, storage stability and selectivity. The zinc ion sensor based on the functionalized NiO nanostructures was also used as indicator electrode in potentiometric titrations and it has demonstrated an acceptable stoichiometric relationship for the determination of zinc ion in unknown samples. The NiO nanostructures-based zinc ion sensor has potential for analysing zinc ion in various industrial, clinical and other real samples.
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Affiliation(s)
- Mazhar Ali Abbasi
- Physical Electronic and Nanotechnology Division, Department of Science and Technology, Campus Norrköping, Linköping University, SE-60174 Norrköping, Sweden; E-Mails: (Z.H.I.); (M.H.); (A.K.); (O.N.); (M.W.)
- Author to whom correspondence should be addressed; E-Mail:
| | - Zafar Hussain Ibupoto
- Physical Electronic and Nanotechnology Division, Department of Science and Technology, Campus Norrköping, Linköping University, SE-60174 Norrköping, Sweden; E-Mails: (Z.H.I.); (M.H.); (A.K.); (O.N.); (M.W.)
| | - Mushtaque Hussain
- Physical Electronic and Nanotechnology Division, Department of Science and Technology, Campus Norrköping, Linköping University, SE-60174 Norrköping, Sweden; E-Mails: (Z.H.I.); (M.H.); (A.K.); (O.N.); (M.W.)
| | - Yaqoob Khan
- Nanosciences and Catalysis Division, National Centre for Physics, Quaid-e-Azam University Campus, 45320 Islamabad, Pakistan; E-Mail:
| | - Azam Khan
- Physical Electronic and Nanotechnology Division, Department of Science and Technology, Campus Norrköping, Linköping University, SE-60174 Norrköping, Sweden; E-Mails: (Z.H.I.); (M.H.); (A.K.); (O.N.); (M.W.)
| | - Omer Nur
- Physical Electronic and Nanotechnology Division, Department of Science and Technology, Campus Norrköping, Linköping University, SE-60174 Norrköping, Sweden; E-Mails: (Z.H.I.); (M.H.); (A.K.); (O.N.); (M.W.)
| | - Magnus Willander
- Physical Electronic and Nanotechnology Division, Department of Science and Technology, Campus Norrköping, Linköping University, SE-60174 Norrköping, Sweden; E-Mails: (Z.H.I.); (M.H.); (A.K.); (O.N.); (M.W.)
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11
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Halogen-free ionic liquid as an additive in zinc(II)-selective electrode: surface analyses as correlated to the membrane activity. Talanta 2012; 94:184-8. [PMID: 22608433 DOI: 10.1016/j.talanta.2012.03.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Revised: 03/04/2012] [Accepted: 03/06/2012] [Indexed: 11/21/2022]
Abstract
Two conventional Zn(II) polyvinyl chloride (PVC) membrane electrodes have been prepared and characterized. They were based on dibenzo-24-crown-8 (DBC) as a neutral carrier, dioctyl phthalate (DOP) as a plasticizer, and potassium tetrakis (p-chlorophenyl) borate, KTpClPB or the halogen-free ionic liquid, tetraoctylammonium dodecylbenzene sulfonate [TOA][DBS] as an additive. The use of ionic liquid has been found to enhance the selectivity of the sensor. For each electrode, the surfaces of two membranes were investigated using X-ray photoelectron, ion-scattering spectroscopy and atomic force microscopy. One of the two membranes was conditioned by soaking it for 24 h in a 1.0×10(-3) M Zn(NO(3))(2) solution and the second was soaked in bi-distilled water for the same interval (24 h). Comparing the two surfaces indicated the following: (a) the high selectivity in case of using [TOA][DBS] as an additive is due to the extra mediation caused by the ionic liquid and (b) the working mechanism of the electrode is based on phase equilibrium at the surface of the membrane associated with ion transport through the bulk of the membrane.
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12
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Wang Y, Peng X, Shi J, Tang X, Jiang J, Liu W. Highly selective fluorescent chemosensor for Zn2+ derived from inorganic-organic hybrid magnetic core/shell Fe3O4@SiO2 nanoparticles. NANOSCALE RESEARCH LETTERS 2012; 7:86. [PMID: 22277075 PMCID: PMC3299599 DOI: 10.1186/1556-276x-7-86] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Accepted: 01/25/2012] [Indexed: 05/11/2023]
Abstract
Magnetic nanoparticles with attractive optical properties have been proposed for applications in such areas as separation and magnetic resonance imaging. In this paper, a simple and novel fluorescent sensor of Zn2+ was designed with 3,5-di-tert-butyl-2-hydroxybenzaldehyde [DTH] covalently grafted onto the surface of magnetic core/shell Fe3O4@SiO2 nanoparticles [NPs] (DTH-Fe3O4@SiO2 NPs) using the silanol hydrolysis approach. The DTH-Fe3O4@SiO2 inorganic-organic hybrid material was characterized by transmission electron microscopy, dynamic light scattering, X-ray power diffraction, diffuse reflectance infrared Fourier transform, UV-visible absorption and emission spectrometry. The compound DTH exhibited fluorescence response towards Zn2+ and Mg2+ ions, but the DTH-Fe3O4@SiO2 NPs only effectively recognized Zn2+ ion by significant fluorescent enhancement in the presence of various ions, which is due to the restriction of the N-C rotation of DTH-Fe3O4@SiO2 NPs and the formation of the rigid plane with conjugation when the DTH-Fe3O4@SiO2 is coordinated with Zn2+. Moreover, this DTH-Fe3O4@SiO2 fluorescent chemosensor also displayed superparamagnetic properties, and thus, it can be recycled by magnetic attraction.
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Affiliation(s)
- Yujiao Wang
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Xiaohong Peng
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Jinmin Shi
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Xiaoliang Tang
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Jie Jiang
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Weisheng Liu
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, People's Republic of China
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13
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Electrochemical sensors for the determination of Zn2+ ions based on pendant armed macrocyclic ligand. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.03.090] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Hosseini M, Abkenar SD, Ganjali M, Faridbod F. Determination of zinc(II) ions in waste water samples by a novel zinc sensor based on a new synthesized Schiff's base. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2010.10.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Ma QJ, Zhang XB, Zhao XH, Gong YJ, Tang J, Shen GL, Yu RQ. A ratiometric fluorescent sensor for zinc ions based on covalently immobilized derivative of benzoxazole. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 73:687-693. [PMID: 19398369 DOI: 10.1016/j.saa.2009.03.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2008] [Revised: 03/06/2009] [Accepted: 03/19/2009] [Indexed: 05/27/2023]
Abstract
In the present paper, we describe the fabrication and analytical characteristics of fluorescence-based zinc ion-sensing glass slides. To construct the sensor, a benzoxazole derivative 4-benzoxazol-2'-yl-3-hydroxyphenyl allyl ether (1) with a terminal double bond was synthesized and copolymerized with 2-hydroxyethyl methacrylate (HEMA) on the activated surface of glass slides by UV irradiation. In the absence of Zn(2+) at pH 7.24, the resulting optical sensor emitted fluorescence at 450 nm via excited-state intramolecular proton transfer (ESIPT). Upon binding with Zn(2+), the ESIPT process was inhibited resulting in a 46 nm blue-shift of fluorescence emission. Thus, the proposed sensor can behave as a ratiometric fluorescent sensor for the selective detection of Zn(2+). In addition, the sensor shows nice selectivity, good reproducibility and fast response time. Cd(2+) did not interfere with Zn(2+) sensing. The sensing membrane demonstrates a good stability with a lifetime of at least 3 months. The linear response range covers a concentration range of Zn(2+) from 8.0x10(-5) to 4.0x10(-3) mol/L and the detection limit is 4.0x10(-5) mol/L. The determination of Zn(2+) in both tap and river water samples shows satisfactory results.
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Affiliation(s)
- Qiu-Juan Ma
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
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16
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Crivat G, Kikuchi K, Nagano T, Priel T, Hershfinkel M, Sekler I, Rosenzweig N, Rosenzweig Z. Fluorescence-based zinc ion sensor for zinc ion release from pancreatic cells. Anal Chem 2007; 78:5799-804. [PMID: 16906726 DOI: 10.1021/ac060764i] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, we describe the synthesis and characterization of analytical properties of fluorescence-based zinc ion-sensing glass slides and their application in monitoring zinc ion release from beta pancreatic cells in cell cultures. To fabricate the sensors, the zinc ion indicator ZnAF-2 {6-[N-[N',N'-bis(2-pyridinylmethyl)-2-aminoethyl]amino-3',6'-dihydroxyspiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one} was modified to include a sufficiently long linking aliphatic chain with a terminal carboxyl functional group. The recently synthesized ZnAF-2 zinc ion indicator provided high zinc ion selectivity in physiological solutions containing millimolar levels of calcium and other possible interfering cations. The carboxyl-modified ZnAF-2 was conjugated to the activated surface of glass slides, which then served as zinc ion sensors. It was possible to grow pancreatic cells directly on the zinc-sensing glass slide or on a membrane placed on these glass slides. The sensors were used to monitor zinc ion release events from glucose-stimulated pancreatic cells. The study showed that the zinc ion sensors responded effectively to the release of zinc ions from pancreatic cells at the nanomolar level with high selectivity and rapid subsecond response time.
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Affiliation(s)
- Georgeta Crivat
- Department of Chemistry and the Advanced Materials Research Institute, University of New Orleans, New Orleans, Louisiana 70148, USA
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17
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Simultaneous determination of silicic acid, Ca, Mg and Al in mineral water and composite tablets by Ion chromatography. Chromatographia 2001. [DOI: 10.1007/bf02492432] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Hornung M, Krivan V. Determination of Trace Impurities in High-Purity Tungsten by Direct Solid Sampling Electrothermal Atomic Absorption Spectrometry Using a Transversely Heated Graphite Tube. Anal Chem 1998. [DOI: 10.1021/ac980161+] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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