51
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Zhu L, Yuan Z, Simmons JT, Sreenath K. Zn(II)-coordination modulated ligand photophysical processes - the development of fluorescent indicators for imaging biological Zn(II) ions. RSC Adv 2014; 4:20398-20440. [PMID: 25071933 PMCID: PMC4111279 DOI: 10.1039/c4ra00354c] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Molecular photophysics and metal coordination chemistry are the two fundamental pillars that support the development of fluorescent cation indicators. In this article, we describe how Zn(II)-coordination alters various ligand-centered photophysical processes that are pertinent to developing Zn(II) indicators. The main aim is to show how small organic Zn(II) indicators work under the constraints of specific requirements, including Zn(II) detection range, photophysical requirements such as excitation energy and emission color, temporal and spatial resolutions in a heterogeneous intracellular environment, and fluorescence response selectivity between similar cations such as Zn(II) and Cd(II). In the last section, the biological questions that fluorescent Zn(II) indicators help to answer are described, which have been motivating and challenging this field of research.
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Affiliation(s)
- Lei Zhu
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-4390, United States
| | - Zhao Yuan
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-4390, United States
| | - J. Tyler Simmons
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-4390, United States
| | - Kesavapillai Sreenath
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-4390, United States
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52
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Benkhellat Z, Allali M, Beley M, Wenger E, Bernard M, Parizel N, Selmeczi K, Joly JP. Click synthesis of symmetric bis-triazol ligands and full characterisation of their copper(ii)-complexes. NEW J CHEM 2014. [DOI: 10.1039/c3nj00570d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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53
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Jin R. Theoretical study on optical and electronic properties of bis-dipolar 1,8-naphthalimide derivatives. Mol Phys 2013. [DOI: 10.1080/00268976.2013.793827] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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54
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You Y, Cho S, Nam W. Cyclometalated Iridium(III) Complexes for Phosphorescence Sensing of Biological Metal Ions. Inorg Chem 2013; 53:1804-15. [DOI: 10.1021/ic4013872] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Youngmin You
- Department of Advanced
Materials Engineering for Information and Electronics, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, Korea
| | - Somin Cho
- Department of Bioinspired Science and Department
of Chemistry and Nano Science, Ewha Womans University, Daehyun-dong,
Seodaemun-gu, Seoul 120-750, Korea
| | - Wonwoo Nam
- Department of Bioinspired Science and Department
of Chemistry and Nano Science, Ewha Womans University, Daehyun-dong,
Seodaemun-gu, Seoul 120-750, Korea
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55
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Tang L, Zhao J, Cai M, Zhou P, Zhong K, Hou S, Bian Y. An efficient sensor for relay recognition of Zn2+ and Cu2+ through fluorescence ‘off–on–off’ functionality. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.08.124] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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56
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Li X, Gao X, Shi W, Ma H. Design strategies for water-soluble small molecular chromogenic and fluorogenic probes. Chem Rev 2013; 114:590-659. [PMID: 24024656 DOI: 10.1021/cr300508p] [Citation(s) in RCA: 1185] [Impact Index Per Article: 107.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaohua Li
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, China
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57
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Yu M, Lim NH, Ellis S, Nagase H, Triccas JA, Rutledge PJ, Todd MH. Incorporation of Bulky and Cationic Cyclam-Triazole Moieties into Marimastat Can Generate Potent MMP Inhibitory Activity without Inducing Cytotoxicity. ChemistryOpen 2013; 2:99-105. [PMID: 24551546 PMCID: PMC3703814 DOI: 10.1002/open.201300014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Indexed: 12/23/2022] Open
Abstract
The synthesis and matrix metalloproteinase (MMP) inhibitory activity of a cyclam-marimastat conjugate and its metal complexes are described. The conjugate, synthesized with a copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition ("click" reaction), contains two zinc-binding groups (ZBGs). The metal complexation behavior with copper(II) and zinc(II) was investigated using UV/Vis spectrophotometry and (1)H NMR spectroscopy, respectively, demonstrating that the first equivalent of the metal ion was chelated by the cyclam-triazole moiety rather than the hydroxamic acid site. Thus, the corresponding mononuclear metal-cyclam complexes were successfully prepared with one equivalent of the metal salt. Both the cyclam-marimastat conjugate and its metal complexes exhibited slightly reduced potency against MMP-1, but essentially identical inhibitory activity against MMP-3. The conjugate and its metal complexes displayed little or no cytotoxicity, further supporting their potential suitability for imaging MMP localization and activity. To the best of our knowledge, this is the first report that describes the incorporation of metal complexes into an MMP inhibitor without influencing the preexisting ZBG, and the first report of the evaluation of structures containing more than one ZBG as MMP inhibitors.
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Affiliation(s)
- Mingfeng Yu
- School of Chemistry, The University of Sydney Sydney, NSW 2006 (Australia)
| | - Ngee H Lim
- The Kennedy Institute of Rheumatology, University of Oxford 65 Aspenlea Road, London W6 8 LH (United Kingdom)
| | - Samantha Ellis
- Sydney Medical School, The University of Sydney Sydney, NSW 2006 (Australia)
| | - Hideaki Nagase
- The Kennedy Institute of Rheumatology, University of Oxford 65 Aspenlea Road, London W6 8 LH (United Kingdom)
| | - James A Triccas
- Sydney Medical School, The University of Sydney Sydney, NSW 2006 (Australia)
| | - Peter J Rutledge
- School of Chemistry, The University of Sydney Sydney, NSW 2006 (Australia)
| | - Matthew H Todd
- School of Chemistry, The University of Sydney Sydney, NSW 2006 (Australia)
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58
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Zhang Z, Wang H, Zhang H, Liu Y. Selectively Fluorescent Sensing Behavior of Phenylaza-15-crown-5-triazolyl Coumarin for Hg2+and Fe3+in Alcohol and Aqueous Media Respectively. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300216] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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59
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Simmons JT, Allen JR, Morris DR, Clark RJ, Levenson CW, Davidson MW, Zhu L. Integrated and passive 1,2,3-triazolyl groups in fluorescent indicators for zinc(II) ions: thermodynamic and kinetic evaluations. Inorg Chem 2013; 52:5838-50. [PMID: 23621758 DOI: 10.1021/ic302798u] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In addition to being a covalent linker in molecular conjugation chemistry, the function of a 1,2,3-triazolyl moiety resulting from the copper(I)-catalyzed azide-alkyne cycloaddition reaction as a ligand for metal ions is receiving considerable attention. In this work, we characterize the thermodynamic and kinetic effects of incorporating a 1,2,3-triazolyl group in a multidentate ligand scaffold on metal coordination in the context of fluorescent zinc(II) indicator development. Ligands L14, BrL14, and FL14 (1,4-isomers) contain the 1,4-disubstituted-1,2,3-triazolyl group that is capable of binding with zinc(II) in conjunction with a di(2-picolylamino) (DPA) moiety within a multidentate ligand scaffold. Therefore, the 1,2,3-triazolyl in the 1,4-isomers is "integrated" in chelation. The 1,5-isomers L15, BrL15, and FL15 contain 1,2,3-triazolyls that are excluded from participating in zinc(II) coordination. These 1,2,3-triazolyls are "passive linkers". Zinc(II) complexes of 2:1 (ligand/metal) stoichiometry are identified in solution using (1)H NMR spectroscopy and isothermal titration calorimetry (ITC) and, in one case, characterized in the solid state. The 1:1 ligand/zinc(II) affinity ratio of L14 over L15, which is attributed to the affinity enhancement of a 1,2,3-triazolyl group to zinc(II) over that of the solvent acetonitrile, is quantified at 18 (-1.7 kcal/mol at 298 K) using an ITC experiment. Fluorescent ligands FL14 and FL15 are evaluated for their potential in zinc(II) sensing applications under pH neutral aqueous conditions. The 1,4-isomer FL14 binds zinc(II) both stronger and faster than the 1,5-isomer FL15. Visualization of free zinc(II) ion distribution in live HeLa cells is achieved using both FL14 and FL15. The superiority of FL14 in staining endogenous zinc(II) ions in live rat hippocampal slices is evident. In summation, this work is a fundamental study of 1,2,3-triazole coordination chemistry, with a demonstration of its utility in developing fluorescent indicators.
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Affiliation(s)
- J Tyler Simmons
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306-4390, United States
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60
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Abstract
The copper-catalyzed azide-alkyne "click" cycloaddition reaction is an efficient coupling reaction that results in the formation of a triazole ring. The wide range of applicable substrates for this reaction allows the construction of a variety of conjugated systems. The additional function of triazoles as metal-ion ligands has led to the click reaction being used for the construction of optical sensors for metal ions. The triazoles are integral binding elements, which are formed in an efficient modular synthesis. Herein, we review recent examples of triazoles as a metal-binding element in conjugated metal-ion sensors.
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Affiliation(s)
- Jonathan J Bryant
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
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61
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Selectivity in changes of fluorescence emission of 1,4-naphthoquinone derivatives by manganese and cadmium ions. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.12.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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62
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Sumiya S, Shiraishi Y, Hirai T. Mechanism for Different Fluorescence Response of a Coumarin–Amide–Dipicolylamine Linkage to Zn(II) and Cd(II) in Water. J Phys Chem A 2013; 117:1474-82. [DOI: 10.1021/jp3111315] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Shigehiro Sumiya
- Research
Center for Solar Energy Chemistry, and Division of Chemical Engineering,
Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
| | - Yasuhiro Shiraishi
- Research
Center for Solar Energy Chemistry, and Division of Chemical Engineering,
Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
| | - Takayuki Hirai
- Research
Center for Solar Energy Chemistry, and Division of Chemical Engineering,
Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan
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63
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Veale EB, Kitchen JA, Gunnlaugsson T. Fluorescenttren-based 4-amino-1,8-naphthalimide sensor for Cu(II) based on the use of the (fluorophore–spacer–receptor) photoinduced electron transfer (PET) principle. Supramol Chem 2013. [DOI: 10.1080/10610278.2012.752088] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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64
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Ast S, Fischer T, Müller H, Mickler W, Schwichtenberg M, Rurack K, Holdt HJ. Integration of the 1,2,3-triazole "click" motif as a potent signalling element in metal ion responsive fluorescent probes. Chemistry 2013; 19:2990-3005. [PMID: 23319382 DOI: 10.1002/chem.201201575] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Indexed: 12/28/2022]
Abstract
In a systematic approach we synthesized a new series of fluorescent probes incorporating donor-acceptor (D-A) substituted 1,2,3-triazoles as conjugative π-linkers between the alkali metal ion receptor N-phenylaza-[18]crown-6 and different fluorophoric groups with different electron-acceptor properties (4-naphthalimide, meso-phenyl-BODIPY and 9-anthracene) and investigated their performance in organic and aqueous environments (physiological conditions). In the charge-transfer (CT) type probes 1, 2 and 7, the fluorescence is almost completely quenched by intramolecular CT (ICT) processes involving charge-separated states. In the presence of Na(+) and K(+) ICT is interrupted, which resulted in a lighting-up of the fluorescence in acetonitrile. Among the investigated fluoroionophores, compound 7, which contains a 9-anthracenyl moiety as the electron-accepting fluorophore, is the only probe which retains light-up features in water and works as a highly K(+)/Na(+)-selective probe under simulated physiological conditions. Virtually decoupled BODIPY-based 6 and photoinduced electron transfer (PET) type probes 3-5, where the 10-substituted anthracen-9-yl fluorophores are connected to the 1,2,3-triazole through a methylene spacer, show strong ion-induced fluorescence enhancement in acetonitrile, but not under physiological conditions. Electrochemical studies and theoretical calculations were used to assess and support the underlying mechanisms for the new ICT and PET 1,2,3-triazole fluoroionophores.
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Affiliation(s)
- Sandra Ast
- Institut für Chemie, Anorganische Chemie, Universität Potsdam, Karl-Liebknecht Str. 24-25, 14467 Golm, Germany
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65
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Yu M, Yu Q, Rutledge PJ, Todd MH. A fluorescent "allosteric scorpionand" complex visualizes a biological recognition event. Chembiochem 2013; 14:224-9. [PMID: 23303717 DOI: 10.1002/cbic.201200637] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Indexed: 12/31/2022]
Abstract
We describe a new class of fluorescent reporter and its employment to visualize the biotin/avidin binding interaction. Derivatives of the azamacrocycle cyclam that contain a pendant naphthalimide dye are inherently fluorescent when zinc(II) is coordinated. Introducing a second pendant group--biotin--affords an unsymmetrical bis-triazole-scorpionand ligand that interacts specifically with avidin. This ligand has been assembled by using a one-pot "double-click" strategy and complexed with copper(II) and zinc(II). The zinc(II) complex is fluorescent, and its fluorescence output changes in the presence of avidin. Upon avidin binding, the fluorescence output is diminished by interaction with the protein, at [complex]/[avidin] ratios of up to 4:1. The observed change might arise from a specific quenching effect in the biotin binding pocket or from a binding-induced change in the coordination geometry of the complex.
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Affiliation(s)
- Mingfeng Yu
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
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66
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Midya GC, Paladhi S, Bhowmik S, Saha S, Dash J. Design and synthesis of an on–off “click” fluorophore that executes a logic operation and detects heavy and transition metal ions in water and living cells. Org Biomol Chem 2013; 11:3057-63. [DOI: 10.1039/c3ob40075a] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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67
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Banerjee S, Veale EB, Phelan CM, Murphy SA, Tocci GM, Gillespie LJ, Frimannsson DO, Kelly JM, Gunnlaugsson T. Recent advances in the development of 1,8-naphthalimide based DNA targeting binders, anticancer and fluorescent cellular imaging agents. Chem Soc Rev 2013; 42:1601-18. [DOI: 10.1039/c2cs35467e] [Citation(s) in RCA: 492] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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68
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Tang L, Cai M, Zhou P, Zhao J, Zhong K, Hou S, Bian Y. A highly selective and ratiometric fluorescent sensor for relay recognition of zinc(ii) and sulfide ions based on modulation of excited-state intramolecular proton transfer. RSC Adv 2013. [DOI: 10.1039/c3ra42931h] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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69
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Nouri H, Cadiou C, Lawson-Daku LM, Hauser A, Chevreux S, Déchamps-Olivier I, Lachaud F, Ternane R, Trabelsi-Ayadi M, Chuburu F, Lemercier G. A modified cyclen azaxanthone ligand as a new fluorescent probe for Zn2+. Dalton Trans 2013; 42:12157-64. [DOI: 10.1039/c3dt51216a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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70
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Liu X, Zhang N, Zhou J, Chang T, Fang C, Shangguan D. A turn-on fluorescent sensor for zinc and cadmium ions based on perylene tetracarboxylic diimide. Analyst 2013; 138:901-6. [DOI: 10.1039/c2an36203a] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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71
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72
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Ast S, Rutledge PJ, Todd MH. Reversing the Triazole Topology in a Cyclam-Triazole-Dye Ligand Gives a 10-Fold Brighter Signal Response to Zn2+in Aqueous Solution. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201201072] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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73
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Hirano T, Kubo H, Shiraishi T, Hiromoto K, Fujiwara T, Kagechika H. Fluorescent properties of coumarins with dual functions constructed by two sequential reactions. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.08.085] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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74
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Basa PN, Sykes AG. Differential Sensing of Zn(II) and Cu(II) via Two Independent Mechanisms. J Org Chem 2012; 77:8428-34. [DOI: 10.1021/jo301193n] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Prem N. Basa
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United
States
| | - Andrew G. Sykes
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United
States
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75
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Zhang LJ, Chen HL, Li ZF, Lu ZL, Wang R. Click-reaction generated [12]aneN3-based fluorescent sensor for Zn(II) ions. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2012.06.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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76
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Chawla HM, Shukla R, Pandey S. Preferential recognition of zinc ions through a new anthraquinonoidal calix[4]arene. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.03.096] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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77
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Synthesis of a ratiometric fluorescent peptide sensor for the highly selective detection of Cd2+. Bioorg Med Chem Lett 2012; 22:4014-7. [DOI: 10.1016/j.bmcl.2012.04.088] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 04/09/2012] [Accepted: 04/18/2012] [Indexed: 11/23/2022]
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78
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Basa PN, Bhowmick A, Horn LM, Sykes AG. Zinc(II) Mediated Imine–Enamine Tautomerization. Org Lett 2012; 14:2698-701. [DOI: 10.1021/ol300874c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Prem N. Basa
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Arundhati Bhowmick
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - LaShawn Medicine Horn
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
| | - Andrew G. Sykes
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, United States
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79
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Sakthivel S, Punniyamurthy T. Fluorescent OFF–ON polymer chemosensor bonded alternatively with 1,4-dioctyloxybenzene and (R,R)-salen for cascade Zn2+ and chiral recognition. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.04.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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80
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Li M, Lu HY, Liu RL, Chen JD, Chen CF. Turn-On Fluorescent Sensor for Selective Detection of Zn2+, Cd2+, and Hg2+ in Water. J Org Chem 2012; 77:3670-3. [DOI: 10.1021/jo3002744] [Citation(s) in RCA: 157] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Meng Li
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hai-Yan Lu
- Graduate University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui-Li Liu
- Graduate University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun-Dao Chen
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Chuan-Feng Chen
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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81
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Wu Y, Dong Y, Li J, Huang X, Cheng Y, Zhu C. A highly selective and sensitive polymer-based fluorescence sensor for Hg²⁺-ion detection via click reaction. Chem Asian J 2012; 6:2725-9. [PMID: 22043499 DOI: 10.1002/asia.201100534] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Yuanzhao Wu
- Key Lab of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
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82
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Banerjee S, Kitchen JA, Gunnlaugsson T, Kelly JM. Synthesis and photophysical evaluation of a pyridinium 4-amino-1,8-naphthalimide derivative that upon intercalation displays preference for AT-rich double-stranded DNA. Org Biomol Chem 2012; 10:3033-43. [PMID: 22395853 DOI: 10.1039/c2ob06898b] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, characterisation and solid state crystal structure of a cationic 4-amino-1,8-naphthalimide derivative (1) are described. The photophysical properties of 1 are shown to vary with the solvent polarity and H-bonding ability. The fluorescence of 1 is enhanced and blue-shifted in its 1:1 complex with 5'-adenosine-monophosphate while it is partially quenched and red-shifted in its complex with 5'-guanosine-monophosphate. Linear and circular dichroism measurements show that 1 binds to double-stranded DNA by intercalation. Comparative UV-visible and fluorescence studies with double stranded synthetic polynucleotides poly(dA-dT)(2) and poly(dG-dC)(2) show that 1 binds much more strongly to the AT polymer; 1 also has a strong preference for A-T rich sequences in natural DNA. Thermal denaturation measurements also reveal a much greater stabilisation of the double-stranded poly(dA-dT)(2) than of natural DNA.
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Affiliation(s)
- Swagata Banerjee
- School of Chemistry, Centre of Synthesis and Chemical Biology, University of Dublin, Trinity College Dublin, Dublin2, Ireland
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83
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Formica M, Fusi V, Giorgi L, Micheloni M. New fluorescent chemosensors for metal ions in solution. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2011.09.010] [Citation(s) in RCA: 539] [Impact Index Per Article: 44.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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84
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Mummidivarapu VVS, Tabbasum K, Chinta JP, Rao CP. 1,3-Di-amidoquinoline conjugate of calix[4]arene (L) as a ratiometric and colorimetric sensor for Zn2+: Spectroscopy, microscopy and computational studies. Dalton Trans 2012; 41:1671-4. [DOI: 10.1039/c2dt11900e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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85
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86
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Crowley JD, McMorran DA. “Click-Triazole” Coordination Chemistry: Exploiting 1,4-Disubstituted-1,2,3-Triazoles as Ligands. TOPICS IN HETEROCYCLIC CHEMISTRY 2012. [DOI: 10.1007/7081_2011_67] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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87
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Zheng S, Lynch PLM, Rice TE, Moody TS, Gunaratne HQN, de Silva AP. Structural effects on the pH-dependent fluorescence of naphthalenic derivatives and consequences for sensing/switching. Photochem Photobiol Sci 2012; 11:1675-81. [DOI: 10.1039/c2pp25069a] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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88
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Yu M, Price JR, Jensen P, Lovitt CJ, Shelper T, Duffy S, Windus LC, Avery VM, Rutledge PJ, Todd MH. Copper, nickel, and zinc cyclam-amino acid and cyclam-peptide complexes may be synthesized with "click" chemistry and are noncytotoxic. Inorg Chem 2011; 50:12823-35. [PMID: 22111787 DOI: 10.1021/ic2020012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We describe the synthesis of cyclam metal complexes derivatized with amino acids or a tripeptide using a copper(I)-catalyzed Huisgen "click" reaction. The linker triazole formed during the synthesis plays an active coordinating role in the complexes. The reaction conditions do not racemize the amino acid stereocenters. However, a methylene group adjacent to the triazole is susceptible to H/D exchange under ambient conditions, an observation which has potentially important implications for structures involving stereocenters adjacent to triazoles in click-derived structures. The successful incorporation of several amino acids is described, including reactive tryptophan and cysteine side chains. All complexes are formed rapidly upon introduction of the relevant metal salt, including synthetically convenient cases where trifluoroacetate salts of cyclam derivatives are used directly in the metalation. None of the metal complexes displayed any cytotoxicity to mammalian cells, suggesting that the attachment of such complexes to amino acids and peptides does not induce toxicity, further supporting their potential suitability for labeling/imaging studies. One Cu(II)-cyclam-triazole-cysteine disulfide complex displayed moderate activity against MCF-10A breast nontumorigenic epithelial cells.
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Affiliation(s)
- Mingfeng Yu
- School of Chemistry, The University of Sydney, NSW 2006, Australia
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89
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Tang YH, Qu Y, Song Z, He XP, Xie J, Hua J, Chen GR. Discovery of a sensitive Cu(II)-cyanide "off-on" sensor based on new C-glycosyl triazolyl bis-amino acid scaffold. Org Biomol Chem 2011; 10:555-60. [PMID: 22101917 DOI: 10.1039/c1ob06242e] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new functional glycosyl peptidomimetic, featuring a C-glucosyl 1,4-dimethoxynaphthalene backbone in conjugation with two triazolyl phenylalanine moieties on its adjacent C3,4-positions, was readily synthesized via click chemistry. Primary optical measurements indicated that the fluorescence of the ester form of this probe (4) could be selectively quenched by Pb(2+). In contrast, the fluorescence intensity of its analog 5 with released carboxylic groups was uniquely diminished by Cu(2+) with remarkably enhanced sensitivity and selectivity. Moreover, subsequent addition of cyanide to the methanol solution of the resulting Cu(2+)-5 complex induced its fluorescence recovery with a nanomolar detection limit, which was two orders of magnitude smaller than the regulated concentration limit of CN(-) in drinking water. This suggests the promising applicability of C-glycosyl bis-triazolyl amino acid scaffold in the future design and exploration of sensitive "off-on" Cu(II)-cyanide chemosensors.
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Affiliation(s)
- Yan-Hui Tang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, PR China
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90
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You Y, Lee S, Kim T, Ohkubo K, Chae WS, Fukuzumi S, Jhon GJ, Nam W, Lippard SJ. Phosphorescent sensor for biological mobile zinc. J Am Chem Soc 2011; 133:18328-42. [PMID: 22023085 DOI: 10.1021/ja207163r] [Citation(s) in RCA: 184] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A new phosphorescent zinc sensor (ZIrF) was constructed, based on an Ir(III) complex bearing two 2-(2,4-difluorophenyl)pyridine (dfppy) cyclometalating ligands and a neutral 1,10-phenanthroline (phen) ligand. A zinc-specific di(2-picolyl)amine (DPA) receptor was introduced at the 4-position of the phen ligand via a methylene linker. The cationic Ir(III) complex exhibited dual phosphorescence bands in CH(3)CN solutions originating from blue and yellow emission of the dfppy and phen ligands, respectively. Zinc coordination selectively enhanced the latter, affording a phosphorescence ratiometric response. Electrochemical techniques, quantum chemical calculations, and steady-state and femtosecond spectroscopy were employed to establish a photophysical mechanism for this phosphorescence response. The studies revealed that zinc coordination perturbs nonemissive processes of photoinduced electron transfer and intraligand charge-transfer transition occurring between DPA and phen. ZIrF can detect zinc ions in a reversible and selective manner in buffered solution (pH 7.0, 25 mM PIPES) with K(d) = 11 nM and pK(a) = 4.16. Enhanced signal-to-noise ratios were achieved by time-gated acquisition of long-lived phosphorescence signals. The sensor was applied to image biological free zinc ions in live A549 cells by confocal laser scanning microscopy. A fluorescence lifetime imaging microscope detected an increase in photoluminescence lifetime for zinc-treated A549 cells as compared to controls. ZIrF is the first successful phosphorescent sensor that detects zinc ions in biological samples.
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Affiliation(s)
- Youngmin You
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States.
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91
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Narayanaswamy N, Maity D, Govindaraju T. Reversible fluorescence sensing of Zn2+ based on pyridine-constrained bis(triazole-linked hydroxyquinoline) sensor. Supramol Chem 2011. [DOI: 10.1080/10610278.2011.611245] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Nagarjun Narayanaswamy
- a Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore, 560064, India
| | - Debabrata Maity
- a Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore, 560064, India
| | - T. Govindaraju
- a Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore, 560064, India
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92
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Suchý M, Milne M, Li AX, McVicar N, Dodd DW, Bartha R, Hudson RHE. Mono- and Tetraalkyne Modified Ligands and Their Eu3+ Complexes - Utilizing “Click” Chemistry to Expand the Scope of Conjugation Chemistry. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100945] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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93
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Zhao Q, Li RF, Xing SK, Liu XM, Hu TL, Bu XH. A highly selective on/off fluorescence sensor for cadmium(II). Inorg Chem 2011; 50:10041-6. [PMID: 21905753 DOI: 10.1021/ic2008182] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A polypyridyl ligand, 2,3,6,7,10,11-hexakis(2-pyridyl)dipyrazino[2,3-f:2',3'-h]quinoxaline (HPDQ), was found to have excellent fluorescent selectivity for Cd(2+) over many other metal ions (K(+), Na(+), Ca(2+), Mg(2+), Mn(2+), Fe(2+), Ni(2+), Co(2+), Cu(2+), Ag(+), Hg(2+), Zn(2+), and Cr(3+)) based on the intramolecular charge-transfer mechanism, which makes HPDQ a potential fluorescence sensor or probe for Cd(2+). An obvious color change between HPDQ and HPDQ + Cd(2+) can be visually observed by the naked eye. The structure of the complex HPDQ-Cd has been characterized by X-ray crystallography. Density functional theory calculation results on the HPDQ and HPDQ-Cd complexes could explain the experimental results.
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Affiliation(s)
- Qiang Zhao
- Department of Chemistry and Tianjin Key Lab on Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, China
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94
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He G, Yan N, Cui H, Liu T, Ding L, Fang Y. A Quinoliene-Containing Conjugated Polymer-Based Sensing Platform for Amino Acids. Macromolecules 2011. [DOI: 10.1021/ma201625u] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Gang He
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University), Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
| | - Ni Yan
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University), Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
| | - Hong Cui
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University), Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
| | - Taihong Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University), Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
| | - Liping Ding
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University), Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University), Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710062, P. R. China
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95
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Romero T, Orenes RA, Espinosa A, Tárraga A, Molina P. Synthesis, Structural Charaterization, and Electrochemical and Optical Properties of Ferrocene–Triazole–Pyridine Triads. Inorg Chem 2011; 50:8214-24. [DOI: 10.1021/ic200745q] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tomás Romero
- Departamento de Química Orgánica, Facultad de Química, and ‡Servicio de Apoyo a la Investigación (SAI), Campus de Espinardo, Universidad de Murcia, E-30100 Murcia, Spain
| | - Raúl A. Orenes
- Departamento de Química Orgánica, Facultad de Química, and ‡Servicio de Apoyo a la Investigación (SAI), Campus de Espinardo, Universidad de Murcia, E-30100 Murcia, Spain
| | - Arturo Espinosa
- Departamento de Química Orgánica, Facultad de Química, and ‡Servicio de Apoyo a la Investigación (SAI), Campus de Espinardo, Universidad de Murcia, E-30100 Murcia, Spain
| | - Alberto Tárraga
- Departamento de Química Orgánica, Facultad de Química, and ‡Servicio de Apoyo a la Investigación (SAI), Campus de Espinardo, Universidad de Murcia, E-30100 Murcia, Spain
| | - Pedro Molina
- Departamento de Química Orgánica, Facultad de Química, and ‡Servicio de Apoyo a la Investigación (SAI), Campus de Espinardo, Universidad de Murcia, E-30100 Murcia, Spain
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96
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Hao E, Meng T, Zhang M, Pang W, Zhou Y, Jiao L. Solvent dependent fluorescent properties of a 1,2,3-triazole linked 8-hydroxyquinoline chemosensor: tunable detection from zinc(II) to iron(III) in the CH3CN/H2O system. J Phys Chem A 2011; 115:8234-41. [PMID: 21702491 DOI: 10.1021/jp202700s] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A triazole-containing 8-hydroxyquinoline (8-HQ) ether 2 was efficiently synthesized in two steps from the "click" strategy. Compound 2 gave a strong fluorescence (Φ = 0.21) in nonprotic solvent like CH(3)CN, and a weak fluorescence (Φ = 0.06) in protic solvent like water. In water, a more than 100 nm red shift of the fluorescence maximum was observed for compound 2 in comparison with that in CH(3)CN. This fluorescence difference may be attributed to the intermolecular photoinduced proton transfer (PPT) process involving the protic solvent water molecules. Similarly, this intermolecular PPT process was also observed in the high-water-content CH(3)CN aqueous solution (e.g., CH(3)CN/H(2)O = 5/95, v/v). The water content in the CH(3)CN/H(2)O binary solvent mixture greatly affected the fluorescence intensity (e.g., Φ = 0.06 and 0.25 when CH(3)CN/H(2)O = 5/95 and 95/5, v/v, respectively) and emission wavelength. Using this interesting property, by simple variation of the water content in the CH(3)CN aqueous solution, compound 2 was tuned from a selective "turn-on" fluorescent sensor for Zn(2+) (CH(3)CN/H(2)O = 5/95, v/v) to a ratiometric one for Zn(2+) and a selective "turn-off" one for Fe(3+) (CH(3)CN/H(2)O = 95/5, v/v) over a wide range of pH value. In high-water-content (CH(3)CN/H(2)O = 5/95, v/v) aqueous solution compound 2 shows a selective "turn-on" response toward Zn(2+), with a 10-fold enhancement in the fluorescence intensity at 428 nm and a 62 nm blue shift of the emission maximum (490 to 428 nm) due to the inhibition of intermolecular PPT process upon chelating with Zn(2+). However, in a less polar solvent (CH(3)CN/H(2)O = 95/5, v/v) in which compound 2 has high fluorescence (quantum yield =0.25), it shows a ratiometric response toward Zn(2+), with a continuous decrease of the fluorescence intensity at 399 nm and an increase at 423 nm. More interestingly, in this case, it also exhibits a very sensitive, selective, and ratiometric fluorescence quenching in the presence of Fe(3+), with an 81 nm red shift of the emission maximum (399 to 480 nm) in a wide range of pH through a metal ligand charge transfer (MLCT) effect.
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Affiliation(s)
- Erhong Hao
- Anhui Key Laboratory of Functional Molecular Solids, College of Chemistry and Material Science, Anhui Normal University, Wuhu 241000, China
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97
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Lo ATS, Salam NK, Hibbs DE, Rutledge PJ, Todd MH. Polyamide-scorpion cyclam lexitropsins selectively bind AT-rich DNA independently of the nature of the coordinated metal. PLoS One 2011; 6:e17446. [PMID: 21573061 PMCID: PMC3090394 DOI: 10.1371/journal.pone.0017446] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Accepted: 02/03/2011] [Indexed: 01/17/2023] Open
Abstract
Cyclam was attached to 1-, 2- and 3-pyrrole lexitropsins for the first time through a synthetically facile copper-catalyzed "click" reaction. The corresponding copper and zinc complexes were synthesized and characterized. The ligand and its complexes bound AT-rich DNA selectively over GC-rich DNA, and the thermodynamic profile of the binding was evaluated by isothermal titration calorimetry. The metal, encapsulated in a scorpion azamacrocyclic complex, did not affect the binding, which was dominated by the organic tail.
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Affiliation(s)
- Anthony T. S. Lo
- School of Chemistry, University of Sydney, Sydney, New South Wales,
Australia
| | - Noeris K. Salam
- Schrödinger, Inc., New York, New York, United States of
America
| | - David E. Hibbs
- Faculty of Pharmacy, University of Sydney, Sydney, New South Wales,
Australia
| | - Peter J. Rutledge
- School of Chemistry, University of Sydney, Sydney, New South Wales,
Australia
| | - Matthew H. Todd
- School of Chemistry, University of Sydney, Sydney, New South Wales,
Australia
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98
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El Majzoub A, Cadiou C, Déchamps-Olivier I, Tinant B, Chuburu F. Cyclam-methylbenzimidazole: a Selective OFF-ON Fluorescent Sensor for Zinc. Inorg Chem 2011; 50:4029-38. [DOI: 10.1021/ic102521g] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Abir El Majzoub
- Groupe Chimie de Coordination, Institut de Chimie Moléculaire de Reims, Université Reims-Champagne-Ardenne, UMR 6229, C2POM, Bât. 18, BP 1039, 51687 Reims Cedex 2, France
| | - Cyril Cadiou
- Groupe Chimie de Coordination, Institut de Chimie Moléculaire de Reims, Université Reims-Champagne-Ardenne, UMR 6229, C2POM, Bât. 18, BP 1039, 51687 Reims Cedex 2, France
| | - Isabelle Déchamps-Olivier
- Groupe Chimie de Coordination, Institut de Chimie Moléculaire de Reims, Université Reims-Champagne-Ardenne, UMR 6229, C2POM, Bât. 18, BP 1039, 51687 Reims Cedex 2, France
| | - Bernard Tinant
- MOST, Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain, Place Louis Pasteur, B-1348 Louvain-la-Neuve, Belgium
| | - Françoise Chuburu
- Groupe Chimie de Coordination, Institut de Chimie Moléculaire de Reims, Université Reims-Champagne-Ardenne, UMR 6229, C2POM, Bât. 18, BP 1039, 51687 Reims Cedex 2, France
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99
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Lau YH, Price JR, Todd MH, Rutledge PJ. A Click Fluorophore Sensor that Can Distinguish CuII and HgII via Selective Anion-Induced Demetallation. Chemistry 2011; 17:2850-8. [DOI: 10.1002/chem.201002477] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Indexed: 11/10/2022]
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100
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Lau YH, Rutledge PJ, Watkinson M, Todd MH. Chemical sensors that incorporate click-derived triazoles. Chem Soc Rev 2011; 40:2848-66. [DOI: 10.1039/c0cs00143k] [Citation(s) in RCA: 331] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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