1
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Hosseinzadeh H, Rad-Moghadam K, Mehrdad M, Rouhi S. Starch mediates and cements densely magnetite-coating of talc, giving an efficient nano-catalyst for three-component synthesis of imidazo[1,2-c]quinazolines. Sci Rep 2024; 14:666. [PMID: 38182779 PMCID: PMC10770035 DOI: 10.1038/s41598-023-51123-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 12/31/2023] [Indexed: 01/07/2024] Open
Abstract
Hot-water-soluble starch (HWSS) was used as a powerful cementing material to produce nano-size conglomerates of talc and magnetite nanoparticles. Coordination of HWSS hydroxyl groups to iron atoms at surface of magnetite leads to grafting and encapsulation of its nanoparticles. The resulting nano-complex showed a higher loading capacity on talc than pristine magnetite nanoparticles. Only a minute amount of HWSS was detected in the fabricated nano-composite Talc\HWSS@Fe3O4. XPS study suggests a considerable interaction between HWSS and Fe3O4 nanoparticles, upon which some of the Fe+3 atoms on surface of Fe3O4 are reduced into Fe+2 atoms. ATR FT-IR spectra of the nano-composite revealed significant delamination of talc sheets on interaction with HWSS-coated Fe3O4 nanoparticles. The nano-composite displayed an efficient catalytic activity in the synthesis of new imidazo[1,2-c]quinazoline derivatives via Grobke-Blackburn-Bienaymé three-component reaction of 4-aminoquinazoline, arylaldehydes and isocyanide. The efficiency of the method was exemplified by synthesizing 7 new products in fairly high yields (68-83%) within short reaction times (24-30 min) using a catalytic amount of the catalyst under solvent-free condition at 120 °C. Clean and fast synthesis of the products and convenient separation of the robust nano-catalyst are the prominent advantages of the present method. The nano-catalyst was properly characterized.
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Affiliation(s)
| | | | - Morteza Mehrdad
- Chemistry Department, University of Guilan, Rasht, 41335-1914, Iran
| | - Somayeh Rouhi
- Chemistry Department, University of Guilan, Rasht, 41335-1914, Iran
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2
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Bairy G, Das P, Dutta B, Bhowmik S, Ray PP, Sinha C. In Situ Oxidation of Pyridyl-Dihydrobenzoimidazoquinazoline and the Synthesis of a Highly Luminescent Cd(II) Coordination Polymer: A Promising Candidate for Mutagenic Nitroaromatic Detection and Device Fabrication. Inorg Chem 2023; 62:12773-12782. [PMID: 37531605 DOI: 10.1021/acs.inorgchem.3c01308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Pyridyl-substituted imidazoquinoline, a potent fluorescent framework, is advantageous to architect multifunctional coordination networks for sensing and fabricating emergent electrical conductors. In this work, a Cd(II)-based one-dimensional (1D) coordination polymer (1D CP), [Cd(glu)2(pbiq)2(H2O)]n (1), [H2glu = glutaric acid and pbiq = 4-(6-(pyridin-4-yl)benzo[4,5]imidazo[1,2-c]quinazoline)], has been structurally confirmed by single-crystal X-ray crystallography. The H-bonding and π···π interactions built a three-dimensional (3D) supramolecular structure that strongly emits at 416 nm in acetonitrile suspension. Potentially intrusive nitroaromatics (NAs) and trinitrophenol (TNP) selectively quench the strong emission of 1, and the highest quenching is noted in the case of TNP. A detection limit (limit of detection (LOD)) of 1.51 × 10-7 M for TNP is determined. The band gap (3.31 eV) of 1 recognizes semiconducting behavior, and an electronic device is fabricated. The correlation of current vs voltage (I-V plot) reveals a substantial non-ohmic electrical conductivity of 1 (Λ: 1.10 × 10-5 S m-1) along with a low energy barrier (ΦB: 0.69), and the series resistance (Rs) becomes 6.21 kΩ.
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Affiliation(s)
- Gurupada Bairy
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Pubali Das
- Department of Physics, Jadavpur University, Kolkata 700032, India
| | - Basudeb Dutta
- Institute for Integrated Cell-Material Sciences, Kyoto University Institute for Advanced Study, Kyoto University, Yoshida, Ushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Saumitra Bhowmik
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India
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3
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Sharma H, Singh V, Tamrakar A, Nigam KK, Pandey MD, Tiwari KK, Pandey R. Development of highly selective fluorescent ferrocenyl-iminopyridine chemosensor for biologically relevant Fe 3. LUMINESCENCE 2023; 38:1132-1138. [PMID: 35362235 DOI: 10.1002/bio.4243] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 03/28/2022] [Indexed: 11/07/2022]
Abstract
Design, synthesis, characterization, and ion detection studies of two ferrocene-appended Schiff bases namely N-(2-[ferrocenylamino]ethyl)-5-nitropyridin-2-amine (1) and ferrocenylamino-1H-imidazole-4-carboxamide (2) been reported. Both the chemosensors have been thoroughly characterized using Fourier transfer infrared, 1 H and 13 C nuclear magnetic resonance, high resolution mass spectrometry, and ultraviolet/visible (UV/visible) and fluorescence spectral techniques. Probes 1 and 2 were designed with the aim of appending the ferrocenyl group with pyridine ring having an amine substitution (for 1) and imidazole ring with an amide substitution (for 2). Interaction of these probes with a series of cations and anions was examined through UV/vis and fluorescence spectral techniques. Probe 2 exhibited an insignificant response towards anions and loss of selectivity for cations, whereas 1 displayed highly selective detection towards biologically important Fe3+ in 2:1 (probe:cation) stoichiometry. Notably, none of the cations and anions could interfere the selectivity of Fe3+ ensured by 1 in aqueous medium. The limit of detection for Fe3+ detection using 1 was determined to be 0.2 ppm. The results strongly suggest that 1 could find promising future application as a chemosensor for Fe3+ in biological systems for quantification and qualitative analysis.
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Affiliation(s)
- Himani Sharma
- Department of Chemistry, National Institute of Technology Uttarakhand, Srinagar, Uttarakhand, India
| | - Vaishali Singh
- Department of Chemistry, National Institute of Technology Uttarakhand, Srinagar, Uttarakhand, India
| | - Arpna Tamrakar
- Department of Chemistry, Institute of Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Kamlesh Kumar Nigam
- Department of Chemistry, Institute of Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Mrituanjay D Pandey
- Department of Chemistry, Institute of Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Kamal Kant Tiwari
- Department of Chemistry, National Institute of Technology Uttarakhand, Srinagar, Uttarakhand, India
| | - Rampal Pandey
- Department of Chemistry, National Institute of Technology Uttarakhand, Srinagar, Uttarakhand, India
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4
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A Highly Sensitive and Selective Quinazoline-Based Colorimetric Probe for Naked-Eye Detection of Fe3+ Ions. J Fluoresc 2022; 32:2309-2318. [DOI: 10.1007/s10895-022-03016-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 08/19/2022] [Indexed: 11/27/2022]
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5
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Zhang X, Wang T, Cui S, Li L, Zheng Z, Mi C, Lin B, Ren X, He X. Design of Photosensitive Cobalt Complex Intermediates and Their Application in the Green Syntheses of Molecules Containing the Quinazolin-4(3 H)-imine Scaffold. J Org Chem 2022; 87:8303-8315. [PMID: 35709489 DOI: 10.1021/acs.joc.1c02987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cobalt/photoredox cooperative catalysis is a well-explored technology for visible-light photoredox catalysis. Recently, the photosensitivity of Co(II) complexes in homogeneous catalysis has aroused the interest of scientists. In this study, photosensitive Co(II) complex intermediates were designed to develop new synthetic methods. These intermediates, consisting of Co(II) and two substrate molecules, bind to O2 and absorb visible light over a wide spectral range, triggering in situ oxidative decarboxylation to produce molecules containing the quinazolin-4(3H)-imine scaffold. These reactions employed glyoxylic acid and ketoacids as new building blocks, and good to excellent yields of the corresponding products were obtained under mild reaction conditions using green and inexpensive reagents and solvents. These results are of importance since the design of Co-based photosensitive intermediates will aid in establishing novel methods for harnessing visible light and hence lead to innovation in organic syntheses.
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Affiliation(s)
- Xianwei Zhang
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, 27 Taiping Road, Haidian District, Beijing 100850, China
| | - Tianzhao Wang
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang 110016, China
| | - Shisheng Cui
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, 27 Taiping Road, Haidian District, Beijing 100850, China
| | - Lei Li
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang 110016, China
| | - Zhibing Zheng
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, 27 Taiping Road, Haidian District, Beijing 100850, China
| | - Chunlai Mi
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, 27 Taiping Road, Haidian District, Beijing 100850, China
| | - Bin Lin
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang 110016, China
| | - Xuhong Ren
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenhe District, Shenyang 110016, China
| | - Xinhua He
- State Key Laboratory of Toxicology and Medical Countermeasures, Institute of Pharmacology and Toxicology, 27 Taiping Road, Haidian District, Beijing 100850, China
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6
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Raza R, Mukherjee M, Panja. A, Baildya N, Ghosh K. Cholesterol‐Modified Quinazoline: Gelation, Ag
+
and Al
3+
Ion Detection under Different Conditions and Phase Selective Dye Removal with an Ag‐gel. ChemistrySelect 2022. [DOI: 10.1002/slct.202200191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Rameez Raza
- Department of Chemistry University of Kalyani Kalyani 741235 India
| | | | - Atanu Panja.
- Department of Chemistry University of Kalyani Kalyani 741235 India
- Department of Chemistry University of Calcutta Kolkata 700009 India
| | | | - Kumaresh Ghosh
- Department of Chemistry University of Kalyani Kalyani 741235 India
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7
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Singh D, Raj KK, Azad UP, Pandey R. In situ transformed three heteroleptic Co(II)-MOFs as potential electrocatalysts for the electrochemical oxygen evolution reaction. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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8
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Kravtsov DV, Voskoboinik OY, Kovalenko SI. Synthesis, antimicrobial, and mitotic toxicity evaluation of new 6‐substituted 2‐(benzo[4,5]imidazo[1,2‐
c
]quinazolin‐5(
6
H
)‐yl)acetic acids. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dmytro V. Kravtsov
- Department of Organic and Bioorganic Chemistry Zaporizhzhia State Medical University Zaporizhzhia Ukraine
| | - Oleksii Yu. Voskoboinik
- Department of Organic and Bioorganic Chemistry Zaporizhzhia State Medical University Zaporizhzhia Ukraine
| | - Serhii I. Kovalenko
- Department of Organic and Bioorganic Chemistry Zaporizhzhia State Medical University Zaporizhzhia Ukraine
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9
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Wang Z, Li H, Peng Z, Wang Z, Wang Y, Lu P. Preparation and photophysical properties of quinazoline-based fluorophores. RSC Adv 2020; 10:30297-30303. [PMID: 35516009 PMCID: PMC9056281 DOI: 10.1039/d0ra05701k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/07/2020] [Indexed: 12/15/2022] Open
Abstract
The donor-acceptor design is a classic method of synthesizing new fluorescent molecules. In this study, a series of new fluorescent compounds (1-10) were synthesized based on 2-(3,5-bis(trifluoromethyl)phenyl)-quinazoline acceptor and various amino donors. The fluorescent emissions of 1-10 cover the spectrum from 414 nm to 597 nm in cyclohexane solutions with various amino donors on 4- or 7-positions of quinazoline. Ultimately, compounds 1 and 2 presented the highest photoluminescence quantum yield (QY) over 80%, while compound 10 provided the largest Stokes shift (161 nm) in cyclohexane. Most of them have strong emissions in aggregated states such as in nanoparticles, in powders, in crystals and in films. Mechanochromic properties were observed for compounds 1, 2, 4 and 7. Furthermore, blue OLEDs were fabricated by using compound 2 or 7 as the active layer.
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Affiliation(s)
- Zhichao Wang
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China
| | - Hanjie Li
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China
| | - Zhixing Peng
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China
| | - Zaibin Wang
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China
| | - Yanguang Wang
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China
| | - Ping Lu
- Department of Chemistry, Zhejiang University Hangzhou 310027 P. R. China
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10
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Li JB, Liu Y, Zheng XJ, Wang D. An off-on chemosensor for Hg2+ based on the excimer emission of anthracene. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104123] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Shinohara Y, Tsukamoto K, Maeda H. A fluorescent turn-on probe for Hg2+ with a high contrast designed by manipulating functional groups tethered to naphthalimide. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.11.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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12
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Srivastava S, Thakur N, Singh A, Shukla P, Maikhuri VK, Garg N, Prasad A, Pandey R. Development of a fused imidazo[1,2-a]pyridine based fluorescent probe for Fe3+ and Hg2+ in aqueous media and HeLa cells. RSC Adv 2019; 9:29856-29863. [PMID: 35531502 PMCID: PMC9072145 DOI: 10.1039/c9ra04743c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 09/15/2019] [Indexed: 01/04/2023] Open
Abstract
A new fluorescent sensor 5 having fused imidazopyridine scaffold has been synthesized via cascade cyclization. It exhibits highly sensitive and selective detection of Fe3+ (‘turn-on’) and Hg2+ (‘turn-off’) in vitro and in HeLa cells.
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Affiliation(s)
- Suman Srivastava
- Department of Applied Sciences
- National Institute of Technology
- Delhi
- India
| | - Neha Thakur
- Department of Chemistry
- National Institute of Technology Uttarakhand
- India
| | | | - Poonam Shukla
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | | | - Neha Garg
- Indian Institute of Technology
- Mandi
- India
| | - Ashok Prasad
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Rampal Pandey
- Department of Chemistry
- National Institute of Technology Uttarakhand
- India
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13
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Ahmad Wani M, Thakur N, Pandey MD, Pandey R. A reusable multichannel anthraimidazoledione-based receptor for Hg2+and Cu2+ions: ultrasensitive, economical and facile detection of Hg2+in real water sources through fluorescence readout. NEW J CHEM 2017. [DOI: 10.1039/c7nj02097j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A multichannel, ultrasensitive and selective receptor (1) has been developed for practical detection of Hg2+in various drinking waters.
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Affiliation(s)
| | - Neha Thakur
- Department of Chemistry
- Dr. Harisingh Gour Central University
- Sagar
- India
| | | | - Rampal Pandey
- Department of Chemistry
- Dr. Harisingh Gour Central University
- Sagar
- India
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14
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Wang XX, Zhang MX, Yu B, Van Hecke K, Cui GH. Synthesis, crystal structures, luminescence and catalytic properties of two d¹⁰ metal coordination polymers constructed from mixed ligands. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 139:442-448. [PMID: 25576941 DOI: 10.1016/j.saa.2014.12.058] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 11/29/2014] [Accepted: 12/17/2014] [Indexed: 06/04/2023]
Abstract
Two new coordination polymers [Cd(bmb)(hmph)]n (1), {[Ag(bmb)]·H2btc}n (2) (bmb=1,4-bis(2-methylbenzimidazol-1-ylmethyl)benzene, H2hmph=homophthalic acid, H3btc=1,3,5-benzenetetracarboxylic acid) were synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction methods, IR spectroscopy, TGA, XRPD and elemental analysis. Complex 1 features a 3D threefold interpenetrating dia array with a 4-connected 6(6) topology. Complex 2 shows a 1D helix chain structure connected by L1 ligands, which is finally extended into a rarely 2D 4L2 supramolecular network via C-H⋯O hydrogen bond interactions. In addition, the luminescence and catalytic properties of the two complexes for the degradation of the methyl orange azo dye in a Fenton-like process were presented. The degradation efficiency of the methyl orange azo dye for 1 and 2 are 56% and 96%, respectively.
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Affiliation(s)
- Xiao-xiao Wang
- College of Chemical Engineering, Hebei United University, 46 West Xinhua Road, Tangshan 063009, Hebei, PR China
| | - Ming-xi Zhang
- College of Chemical Engineering, Hebei United University, 46 West Xinhua Road, Tangshan 063009, Hebei, PR China
| | - Baoyi Yu
- Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281 S3, B-9000 Ghent, Belgium
| | - Kristof Van Hecke
- Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281 S3, B-9000 Ghent, Belgium
| | - Guang-hua Cui
- College of Chemical Engineering, Hebei United University, 46 West Xinhua Road, Tangshan 063009, Hebei, PR China.
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15
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Gu B, Huang L, Mi N, Yin P, Zhang Y, Tu X, Luo X, Luo S, Yao S. An ESIPT-based fluorescent probe for highly selective and ratiometric detection of mercury(ii) in solution and in cells. Analyst 2015; 140:2778-84. [DOI: 10.1039/c5an00273g] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly selective and sensitive ratiometric fluorescent probe for mercury(ii) has been developed. It has been demonstrated that the probe is able to detect Hg2+ level in water samples and living cell.
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Affiliation(s)
- Biao Gu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- PR China
| | - Liyan Huang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- PR China
| | - Naxiu Mi
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- PR China
| | - Peng Yin
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- PR China
| | - Youyu Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- PR China
| | - Xinman Tu
- Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control
- Nanchang
- PR China
| | - Xubiao Luo
- Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control
- Nanchang
- PR China
| | - Shenlian Luo
- Key Laboratory of Jiangxi Province for Ecological Diagnosis-Remediation and Pollution Control
- Nanchang
- PR China
| | - Shouzhuo Yao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education)
- College of Chemistry and Chemical Engineering
- Hunan Normal University
- Changsha 410081
- PR China
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16
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Kumar A, Pandey R, Kumar A, Pandey DS. Pyridylphenyl appended imidazoquinazoline based ratiometric fluorescence “turn on” chemosensor for Hg2+and Al3+in aqueous media. RSC Adv 2014. [DOI: 10.1039/c4ra09804h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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17
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Pandey R, Méhes G, Kumar A, Gupta RK, Adachi C, Pandey DS. Structural and mechanistic insights into an Fe³⁺-triggered quinazoline based molecular rotor. Chem Commun (Camb) 2014; 50:8032-5. [PMID: 24920535 DOI: 10.1039/c4cc01917b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly fluorescent, multifunctional and thermoreversible conformational switching (1) has been designed and developed by embedding two imidazo[1,2-c]quinazoline (IQ) units in the pyridyl scaffold. The origin of the conformational and optical switching of 1 to 1' has been established by various studies and by developing a model compound.
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Affiliation(s)
- Rampal Pandey
- Prof. D. S. Pandey, Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi-221005, India.
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18
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A highly selective and femto-molar sensitive fluorescence ‘turn-on’ chemodosimeter for Hg2+. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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19
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Kumar A, Pandey R, Gupta RK, Pandey DS. Fluorescent azophenol-quinazoline dyad as multichannel reversible pH indicator in aqueous media: an innovative concept on diazo based dyads. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.08.103] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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20
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Srivastava P, Ali R, Razi SS, Shahid M, Patnaik S, Misra A. A simple blue fluorescent probe to detect Hg2+ in semiaqueous environment by intramolecular charge transfer mechanism. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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21
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Tang L, Guo J, Huang Z. Tune Metal Ion Selectivity by Changing Working Solvent: Fluorescent and Colorimetric Recognition of Cu2+by a Known Hg2+Selective Probe. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.4.1061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Jin J, Li X, Zhang J, Zhao P, Tian H. Rational Design of Double-Check Mercury Ion Chemosensors Based on Photochromic Compounds. Isr J Chem 2013. [DOI: 10.1002/ijch.201200102] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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