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Navale GR, Rana A, Saini S, Singh S, Saini R, Chaudhary VK, Roy P, Ghosh K. An efficient fluorescence chemosensor for sensing Zn(II) ions and applications in cell imaging and detection of Zn(II) induced aggregation of PrP(106–126) peptide. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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2
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Hussein EM, Guesmi NE, Ahmed SA. Distinctive tunable photophysical properties of versatile environmentally-sensitive tribranched cyanopyridine fluorophores. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 248:119169. [PMID: 33223436 DOI: 10.1016/j.saa.2020.119169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/11/2020] [Accepted: 10/30/2020] [Indexed: 06/11/2023]
Abstract
In the present work, twenty-four environmentally-sensitive cyanopyridine fluorophores bearing pyrene and/ or fluorene with different para-substituted-phenyl moieties that have been previously designed and synthesized by us are studied in depth for their photophysical properties. Initially, the optical performances of the compounds were investigated by employing UV-visible and fluorescence spectroscopic tools in various aprotic and protic solvents. All the compounds exhibited absorption bands between 310 and 452 nm, and emission bands between 454 and 633 nm. High sensitivity emission spectra with solvents of different polarities were recorded and studied. The fluorescence quantum yield (ϕf) increased in solvents of low polarity and decreased on increasing the polarity of solvents. On the other hand, in case of strong electron donating (-NMe2) and strong electron attracting (-CN) substitution, a pronounced increase in Stokes shifts (up to 252 nm, 14250 cm-1) were recorded. Lippert-Mataga and Reichardts correlations, applied for estimating the variation in dipole moments (Δμ), suggested that the emissive state of designed fluorescence 3-cyanopyridine derivatives is of strong ICT character. The aprotic and protic solvents gave a linear plot for the Stokes shifts in a Lippert-Mataga plot, which appeared as two distinct domains in ET(30) scales indicating the presence of hydrogen bondings. It was observed that for compounds 5b - 8b, with (-NMe2) group on the skeleton of phenyl ring, the Lippert-Mataga and Reichardt-Dimroth's plots deviated from linearity signifying that 5b - 8b molecules were involved in specific interaction with protic solvents.
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Affiliation(s)
- Essam M Hussein
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University, 21955 Makkah, Saudi Arabia; Department of Chemistry, Faculty of Science, Assiut University, 71516 Assiut, Egypt
| | - Nizar El Guesmi
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University, 21955 Makkah, Saudi Arabia; Département de chimie, Faculté des Sciences de Monastir, Avenue de l'Environnement, 5019 Monastir, Tunisia
| | - Saleh A Ahmed
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University, 21955 Makkah, Saudi Arabia; Department of Chemistry, Faculty of Science, Assiut University, 71516 Assiut, Egypt.
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3
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VanDenburgh KL, Liu Y, Sadhukhan T, Benson CR, Cox NM, Erbas-Cakmak S, Qiao B, Gao X, Pink M, Raghavachari K, Flood AH. Multi-state amine sensing by electron transfers in a BODIPY probe. Org Biomol Chem 2020; 18:431-440. [DOI: 10.1039/c9ob02466b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Photoinduced electron transfer sets up the BODIPY probe for multi-state amine sensing by single-electron transfer then collisional quenching.
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Affiliation(s)
| | - Yun Liu
- Department of Chemistry
- Indiana University
- Bloomington
- USA
| | | | | | | | | | - Bo Qiao
- Department of Chemistry
- Indiana University
- Bloomington
- USA
| | - Xinfeng Gao
- Department of Chemistry
- Indiana University
- Bloomington
- USA
| | - Maren Pink
- Department of Chemistry
- Indiana University
- Bloomington
- USA
| | | | - Amar H. Flood
- Department of Chemistry
- Indiana University
- Bloomington
- USA
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4
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Tu Y, Liu J, Zhang H, Peng Q, Lam JWY, Tang BZ. Restriction of Access to the Dark State: A New Mechanistic Model for Heteroatom-Containing AIE Systems. Angew Chem Int Ed Engl 2019; 58:14911-14914. [PMID: 31343100 DOI: 10.1002/anie.201907522] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Indexed: 01/02/2023]
Abstract
Restriction of intramolecular motion (RIM), as the working mechanism of aggregation-induced emission (AIE), cannot fully explain some heteroatom-containing systems. Now, two excited states are taken into account and a mechanism, restriction of access to dark state (RADS), is specified to elaborate RIM and complete the picture of AIE mechanism. A nitrogen-containing molecule named APA is chosen as a model compound; its weak fluorescence in solution is ascribed to the easy access from the bright (π,π*) state to the close-lying dark (n,π*) state. By either metal complexation or aggregation, the dark state is less accessible due to restriction of the molecular motion leading to the dark state and elevation of the dark state energy, thus the bright state emission is restored. RADS is powerful in elucidating the AIE effect of molecules with excited states favoring non-radiative decay, including overlap-forbidden states such as (n,π*) and CT states, spin-forbidden triplet states, and so on.
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Affiliation(s)
- Yujie Tu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Junkai Liu
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Haoke Zhang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Qian Peng
- Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jacky W Y Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.,State Key Laboratory of Luminescent Materials and Devices, Center for Aggregation-Induced Emission (Guangzhou International Campus,), South China University of Technology, Guangzhou, 510640, China
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5
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Tu Y, Liu J, Zhang H, Peng Q, Lam JWY, Tang BZ. Restriction of Access to the Dark State: A New Mechanistic Model for Heteroatom‐Containing AIE Systems. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907522] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Yujie Tu
- Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Junkai Liu
- Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Haoke Zhang
- Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Qian Peng
- Key Laboratory of Organic Solids Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
| | - Jacky W. Y. Lam
- Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Ben Zhong Tang
- Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction and Institute for Advanced Study The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
- State Key Laboratory of Luminescent Materials and Devices Center for Aggregation-Induced Emission (Guangzhou International Campus,) South China University of Technology Guangzhou 510640 China
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6
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Low Molecular Weight Fluorescent Probes (LMFPs) to Detect the Group 12 Metal Triad. CHEMOSENSORS 2019. [DOI: 10.3390/chemosensors7020022] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Fluorescence sensing, of d-block elements such as Cu2+, Fe3+, Fe2+, Cd2+, Hg2+, and Zn2+ has significantly increased since the beginning of the 21st century. These particular metal ions play essential roles in biological, industrial, and environmental applications, therefore, there has been a drive to measure, detect, and remediate these metal ions. We have chosen to highlight the low molecular weight fluorescent probes (LMFPs) that undergo an optical response upon coordination with the group 12 triad (Zn2+, Cd2+, and Hg2+), as these metals have similar chemical characteristics but behave differently in the environment.
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7
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Meisner QJ, Younes AH, Yuan Z, Sreenath K, Hurley JJM, Zhu L. Excitation-Dependent Multiple Fluorescence of a Substituted 2-(2'-Hydroxyphenyl)benzoxazole. J Phys Chem A 2018; 122:9209-9223. [PMID: 30411891 DOI: 10.1021/acs.jpca.8b07988] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Excitation-dependent multiple fluorescence of a 2-(2'-hydroxyphenyl)benzoxazole (HBO) derivative (1) is described. Compound 1 contains the structure of a charge-transfer (CT) 4-hydroxyphenylvinylenebipy fluorophore and an excited-state intramolecular proton transfer capable (ESIPT-capable) HBO component that intersect at the hydroxyphenyl moiety. Therefore, both CT and ESIPT pathways, while spatially mostly separated, are available to the excited state of 1. The ESIPT process offers two emissive isomeric structures (enol and keto) of 1 in the excited state, while the susceptibility of 1 to a base adds another option to tune the composite emission color. In addition to the ground-state acid-base equilibrium that can be harnessed for the control of emission color by excitation energy, compound 1 exhibits excitation-dependent emission that is attributed to solvent-affected ground-state structural changes. Therefore, depending on the medium and excitation wavelength, the emission from the enol, keto, and anion forms could occur simultaneously, which are in the color ranges of blue, green, and orange/red, respectively. A composite color of white with CIE coordinates of (0.33, 0.33) can be materialized through judicious choices of medium and excitation wavelength.
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Affiliation(s)
- Quinton J Meisner
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftan Way , Tallahassee , Florida 32306-4390 , United States
| | - Ali H Younes
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftan Way , Tallahassee , Florida 32306-4390 , United States
| | - Zhao Yuan
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftan Way , Tallahassee , Florida 32306-4390 , United States
| | - Kesavapillai Sreenath
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftan Way , Tallahassee , Florida 32306-4390 , United States
| | - Joseph J M Hurley
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftan Way , Tallahassee , Florida 32306-4390 , United States
| | - Lei Zhu
- Department of Chemistry and Biochemistry , Florida State University , 95 Chieftan Way , Tallahassee , Florida 32306-4390 , United States
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8
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Pawar S, Akula M, Labala S, Venuganti VVK, Bhattacharya A, Nag A. Zinc(II) Ion Sensing in Aqueous Micellar Solution Using Modified Bipyridine-Based "Turn-On" Fluorescent Probes and its Application in Bioimaging. Chempluschem 2016; 81:1339-1348. [PMID: 31964065 DOI: 10.1002/cplu.201600382] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/21/2016] [Indexed: 02/02/2023]
Abstract
The bipyridine-based constructs 4-(pyridine-2-yl)-3H-pyrrolo[2,3-c]quinoline (PPQ) and [6-(3H-pyrrolo[2,3-c]quinolin-4-yl)pyridin-2-yl]methanol (PPQ-OH) and their assemblies with surfactants are evaluated as turn-on fluorescent sensors for Zn2+ ions in aqueous solution. This study strives to overcome the problem of low water solubility of the hydrophobic PPQ and PPQ-OH by using micelles. Whereas the ligands show selective sensing behavior for Zn2+ over important biological cations including Na+ , K+ , Ca2+ , Mg2+ in anionic sodium dodecyl sulfate and non-ionic Tween 80 micelles, no Zn2+ sensing is observed in cationic cetyltrimethylammonium bromide micelles. Unlike in DMF, Cd2+ interference is observed in aqueous conditions, which can be avoided either by performing the study at pH≥9 or by carrying out a time-resolved fluorescence study. Analysis of the Job plot data, the fluorescence lifetimes, and experiments on varying micellar shape and pH, confirms that the coordination volume of the resulting octahedral metal complex and formation of a five-membered chelate ring are critical factors for Cd2+ interference. The described sensing systems are capable of detecting Zn2+ ions at the micromolar level. Additionally, it is shown that PPQ and PPQ-OH can be used to detect Zn2+ in HeLa cells under physiological conditions in bioimaging studies.
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Affiliation(s)
- Shweta Pawar
- Department of Chemistry, BITS Pilani Hyderabad Campus, Hyderabad, 500078, India
| | - Mahesh Akula
- Department of Chemistry, BITS Pilani Hyderabad Campus, Hyderabad, 500078, India
| | - Suman Labala
- Department of Pharmacy, BITS Pilani Hyderabad Campus, Hyderabad, 500078, India
| | | | - Anupam Bhattacharya
- Department of Chemistry, BITS Pilani Hyderabad Campus, Hyderabad, 500078, India
| | - Amit Nag
- Department of Chemistry, BITS Pilani Hyderabad Campus, Hyderabad, 500078, India
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9
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Dai Z. Steric and Stereochemical Modulation in Pyridyl- and Quinolyl-Containing Ligands. Molecules 2016; 21:molecules21121647. [PMID: 27916967 PMCID: PMC6274402 DOI: 10.3390/molecules21121647] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 11/28/2016] [Accepted: 11/28/2016] [Indexed: 12/30/2022] Open
Abstract
Nitrogen-containing pyridine and quinoline are outstanding platforms on which excellent ionophores and sensors for metal ions can be built. Steric and stereochemical effects can be used to modulate the affinity and selectivity of such ligands toward different metal ions on the coordination chemistry front. On the signal transduction front, such effects can also be used to modulate optical responses of these ligands in metal sensing systems. In this review, steric modulation of achiral ligands and stereochemical modulation in chiral ligands, especially ionophores and sensors for zinc, copper, silver, and mercury, are examined using published structural and spectral data. Although it might be more challenging to construct chiral ligands than achiral ones, isotropic and anisotropic absorption signals from a single chiroptical fluorescent sensor provide not only detection but also differentiation of multiple analytes with high selectivity.
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Affiliation(s)
- Zhaohua Dai
- Department of Chemistry and Physical Sciences, Forensic Science Program, Pace University, 1 Pace Plaza, New York, NY 10038, USA.
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10
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Barsoum DN, Kyeremeh‐Mensah L, Meisner QJ, Clark RJ, Masson E, Zhu L. Zinc(II) Complexes of
N
,
N
‐Di(2‐picolyl)hydrazones. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201601066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- David N. Barsoum
- Department of Chemistry and BiochemistryFlorida State University95 Chieftan Way32306‐4390TallahasseeFLUSA
| | | | - Quinton J. Meisner
- Department of Chemistry and BiochemistryFlorida State University95 Chieftan Way32306‐4390TallahasseeFLUSA
| | - Ronald J. Clark
- Department of Chemistry and BiochemistryFlorida State University95 Chieftan Way32306‐4390TallahasseeFLUSA
| | - Eric Masson
- Department of Chemistry and BiochemistryOhio University45701AthensOhioUSA
| | - Lei Zhu
- Department of Chemistry and BiochemistryFlorida State University95 Chieftan Way32306‐4390TallahasseeFLUSA
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11
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Synthetic utility of iodic acid in the oxidation of benzylic alcohols to aromatic aldehydes and ketones. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Ahn SH, Choi SI, Jung MJ, Nayab S, Lee H. Novel Cobalt(II) complexes containing N,N-di(2-picolyl)amine based ligands; Synthesis, characterization and application towards methyl methacrylate polymerisation. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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13
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Xu Z, Xu L. Fluorescent probes for the selective detection of chemical species inside mitochondria. Chem Commun (Camb) 2016; 52:1094-119. [DOI: 10.1039/c5cc09248e] [Citation(s) in RCA: 220] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This feature article systematically summarizes the development of fluorescent probes for the selective detection of chemical species inside mitochondria.
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Affiliation(s)
- Zheng Xu
- Chongqing Key Laboratory of Environmental Materials and Remediation Technology
- College of Materials and Chemical Engineering
- Chongqing University of Arts and Sciences
- Chongqing
- China
| | - Lin Xu
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai
- China
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14
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Wang C, Xu QW, Zhang WN, Peng Q, Zhao CH. Charge-Transfer Emission in Organoboron-Based Biphenyls: Effect of Substitution Position and Conformation. J Org Chem 2015; 80:10914-24. [DOI: 10.1021/acs.joc.5b02038] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Chen Wang
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Jinan 250100, People’s Republic of China
| | - Qing-Wen Xu
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Jinan 250100, People’s Republic of China
| | - Wei-Ning Zhang
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Jinan 250100, People’s Republic of China
| | - Qian Peng
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Organic
Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Cui-Hua Zhao
- School
of Chemistry and Chemical Engineering, Key Laboratory of Special Functional
Aggregated Materials, Ministry of Education, Shandong University, Jinan 250100, People’s Republic of China
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15
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Zhu L, Younes AH, Yuan Z, Clark RJ. 5-Arylvinyl-2,2'-bipyridyls: Bright "push-pull" dyes as components in fluorescent indicators for zinc ions. J Photochem Photobiol A Chem 2015; 311:1-15. [PMID: 26190906 DOI: 10.1016/j.jphotochem.2015.05.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This article reviews the zinc(II)-dependent photophysical properties of arylvinylbipyridines (AVBs), a class of fluoroionophores in which 2,2'-bipyridyl and an aryl moiety are electronically conjugated. Zinc(II) binding of an AVB may lead to an emission bathochromic shift of the fluoroionophore without diminishing its fluorescence quantum yield. This observation can be explained using the excited state model of electron donor-π bridge-electron acceptor "push-pull" fluorophores, in which the bipy moiety acts as an electron acceptor, and zinc(II)-coordination strengthens its electron affinity. The spectral sensitivity of bipy-containing fluoroionophores, such as AVBs, to zinc(II) can be exploited to prepare fluorescent indicators for this ion. In several cases, AVB moieties are incorporated in fluorescent heteroditopic ligands, so that the variation of zinc(II) concentration over a relatively large range can be correlated to fluorescence changes in either intensity or color. AVB fluoroionophores are also used to introduce an intramolecular Förster resonance energy transfer (FRET) strategy for creating zinc(II) indicators with high photostability and a narrow emission band, two desired characteristics of dyes used in fluorescence microscopy.
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Affiliation(s)
- Lei Zhu
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-4390, USA
| | - Ali H Younes
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-4390, USA
| | - Zhao Yuan
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-4390, USA
| | - Ronald J Clark
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, FL 32306-4390, USA
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Yuan Z, Younes AH, Allen JR, Davidson MW, Zhu L. Enhancing the Photostability of Arylvinylenebipyridyl Compounds as Fluorescent Indicators for Intracellular Zinc(II) Ions. J Org Chem 2015; 80:5600-10. [PMID: 25942357 DOI: 10.1021/acs.joc.5b00503] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Arylvinylenebipyridyl (AVB) ligands are bright, zinc(II)-sensitive fluoroionophores. The applicability of AVBs as fluorescent indicators for imaging cellular zinc(II), however, is limited by low photostability, partially attributable to the photoisomerization of the vinylene functionality. Two configurationally immobilized (i.e., "locked") AVB analogues are prepared in this work. The zinc(II)-sensitive photophysical properties and zinc(II) affinities of both AVBs and their locked analogues are characterized in organic and aqueous media. The zinc(II) sensitivity of the emission is attributed to the zinc(II)-dependent energies of the charge transfer excited states of these compounds. The configurationally locked ligands have improved photostability, while maintaining the brightness and zinc(II) sensibility of their AVB progenitors. The feasibility of the "locked" AVB analogues with improved photostability for imaging intracellular Zn(II) of eukaryotic cells using laser confocal fluorescence microscopy is demonstrated.
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Affiliation(s)
- Zhao Yuan
- †Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306-4390, United States
| | - Ali H Younes
- †Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306-4390, United States
| | - John R Allen
- ‡National High Magnetic Field Laboratory and Department of Biological Sciences, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, United States
| | - Michael W Davidson
- ‡National High Magnetic Field Laboratory and Department of Biological Sciences, Florida State University, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, United States
| | - Lei Zhu
- †Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida 32306-4390, United States
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Yuasa J, Mukai R, Hasegawa Y, Kawai T. Ratiometric luminescence thermometry based on crystal-field alternation at the extremely narrow ⁵D₀ → ⁷F₂ transition band of europium(III). Chem Commun (Camb) 2015; 50:7937-40. [PMID: 24686443 DOI: 10.1039/c4cc00704b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dinuclear europium(III) complex with a structure of [BP-(Eu(III))2-(ODA)3] (BP = 2,2'-bipyridine-6,6'-dicarboxylic acid bis(N-hydroxy-succinimide) ester, ODA = diglycolic acid) shows a fully reversible emission spectral change at the extremely narrow (5)D0 → (7)F2 transition band in response to temperature changes ranging from 283 K to 333 K.
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Affiliation(s)
- Junpei Yuasa
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.
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18
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Song Y, Nayab S, Jeon J, Park SH, Lee H. Cadmium(II) complexes containing N′-substituted N,N-di(2-picolyl)amine: The formation of monomeric versus dimeric complexes is affected by the N′-substitution group on the amine moiety. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.02.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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19
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The effect of chain size on the modeling of second sphere effects in biomimetic complexes. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2014.11.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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20
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Wang C, Jia J, Zhang WN, Zhang HY, Zhao CH. Triarylboranes with a 2-Dimesitylboryl-2’-(N,N-dimethylamino)biphenyl Core Unit: Structure-Property Correlations and Sensing Abilities to Discriminate Between F−and CN−Ions. Chemistry 2014; 20:16590-601. [DOI: 10.1002/chem.201403975] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Indexed: 01/29/2023]
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Büchert M, Steenbock T, Lukaschek C, Wolff MC, Herrmann C, Heck J. 2,2′-Bipyridine-Based Dendritic Structured Compounds for Second Harmonic Generation. Chemistry 2014; 20:14351-61. [DOI: 10.1002/chem.201404001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Indexed: 11/07/2022]
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Song Y, Kim D, Lee HJ, Lee H. Synthesis and structural characterization of [(dpca)MX2] (M=Cu, X=Cl; M=Cd, X=Br and M=Zn, X=NO3) complexes containing N,N-di(2-picolyl)cyclohexylamine (dpca) and their application to methyl methacrylate polymerization. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.04.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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23
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Kim S, Kim D, Song Y, Lee HJ, Lee H. Synthesis and Structural Characterisation of Palladium(II) Complexes with N,N′,N-Tridentate N′-Substituted N,N-Di(2-picolyl)amines and their Application to Methyl Methacrylate Polymerisation. Aust J Chem 2014. [DOI: 10.1071/ch13731] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The reaction of [Pd(CH3CN)2Cl2] with N′-substituted N,N-di(2-picolyl)amine-based ancillary ligands, for example N,N-di(2-picolyl)cyclohexylmethylamine (L1), N,N-di(2-picolyl)benzylamine (L2), N,N-di(2-picolyl)aniline (L3), and 1,4-bis[bis(2-pyridylmethyl)aminomethyl]benzene (L4), in the presence of NaClO4 in ethanol yields a new series of [(NN′N)PdCl]X (X = ClO4, Cl) complexes, i.e. mononuclear [LnPdCl]ClO4 (Ln = L1, L2, L3) and binuclear [L4Pd2Cl2]Cl2. X-Ray crystallographic analysis determined that the Pd atom in complexes [(NN′N)PdCl]X showed a slightly distorted square-planar geometry involving three nitrogen atoms and a chlorido ligand. Moreover, the unit cell included a ClO4– or Cl– anion as the counterion. The complex [L1PdCl]ClO4 showed the highest catalytic activity for the polymerisation of methyl methacrylate in the presence of modified methylaluminoxane at 60°C among the mononuclear PdII complexes. Specifically, the activity of binuclear [L4Pd2Cl2]Cl2 was 2-fold higher than the corresponding mononuclear [L2PdCl]ClO4 per active palladium metal centre.
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24
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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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25
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Oxidation of Alcohols to Aldehydes or Ketones with 1-Acetoxy-1,2-benziodoxole-3(1H)-one Derivatives. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301466] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Goforth SK, Walroth RC, Brannaka JA, Angerhofer A, McElwee-White L. Heterobimetallic Complexes of Polypyridyl Ligands Containing Paramagnetic Centers: Synthesis and Characterization by IR and EPR. Inorg Chem 2013; 52:14116-23. [DOI: 10.1021/ic401952s] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sarah K. Goforth
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Richard C. Walroth
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Joseph A. Brannaka
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Alexander Angerhofer
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Lisa McElwee-White
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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27
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Yan YQ, Li YB, Wang JW, Zhao CH. Effect of the Substitution Pattern on the Intramolecular Charge-Transfer Emissions in Organoboron-Based Biphenyls, Diphenylacetylenes, and Stilbenes. Chem Asian J 2013; 8:3164-76. [DOI: 10.1002/asia.201300872] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Indexed: 12/29/2022]
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28
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Goforth SK, Walroth RC, McElwee-White L. Evaluation of Multisite Polypyridyl Ligands as Platforms for the Synthesis of Rh/Zn, Rh/Pd, and Rh/Pt Heterometallic Complexes. Inorg Chem 2013; 52:5692-701. [DOI: 10.1021/ic301810y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sarah K. Goforth
- Department of Chemistry,
University of Florida, Gainesville, Florida 32611, United States
| | - Richard C. Walroth
- Department of Chemistry,
University of Florida, Gainesville, Florida 32611, United States
| | - Lisa McElwee-White
- Department of Chemistry,
University of Florida, Gainesville, Florida 32611, United States
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29
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Jiang S, Liu M, Cui Y, Zou D, Wu Y. Formation and Rupture of a Supramolecular Nanocapsule Triggeredon-off-onSupramolecular Switch for Zn2+. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201416] [Citation(s) in RCA: 3] [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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30
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Guillo P, Hamelin O, Pécaut J, Ménage S. Complexation to [Ru(bpy)2]2+: the trick to functionalize 3,3′-disubstituted-2,2′-bipyridine. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.11.089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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31
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Younes AH, Zhu L. Tunable dual fluorescence of 3-(2,2'-bipyridyl)-substituted iminocoumarin. Chemphyschem 2012; 13:3827-35. [PMID: 22969014 DOI: 10.1002/cphc.201200583] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Indexed: 12/29/2022]
Abstract
3-(2,2'-Bipyridyl)-substituted iminocoumarin molecules (compounds 1 and 2) exhibit dual fluorescence. Each molecule has one electron donor and two electron acceptors that are in conjugation, which leads to fluorescence from two independent charge transfer (CT) states. To account for the dual fluorescence, we subscribe to a kinetic model in which both CT states form after rapid decays from the directly accessed S(1) and S(2) excited states. Due to the slow internal conversion from S(2) to S(1), or more likely the slow interconversion between the two subsequently formed CT states, dual emission is allowed to occur. This hypothesis is supported by the following evidence: 1) the emission at short and long ends of the spectrum originates from two different excitation spectra, which eliminates the possibility that dual emission occurs after an adiabatic reaction at the S(1) level. 2) The fluorescence quantum yield of compound 2 grows with increasing excitation wavelength, which indicates that the high-energy excitation elevates the molecule to a weakly emissive state that does not internally convert to the low-energy, highly emissive state. The intensity of the two emission bands of 1 is tunable through the specific interactions between either of the two electron acceptors with another species, such as Zn(2+) in the current demonstration. Therefore, the development of ratiometric fluorescent indicators based on the dual-emitting iminocoumarin system is conceivable. Further fundamental studies on this series of compounds using time-resolved spectroscopic techniques, and explorations of their applications will be carried out in the near future.
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Affiliation(s)
- Ali H Younes
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA
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32
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Sreenath K, Clark RJ, Zhu L. Tricolor emission of a fluorescent heteroditopic ligand over a concentration gradient of zinc(II) ions. J Org Chem 2012; 77:8268-79. [PMID: 22924325 DOI: 10.1021/jo3016659] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The internal charge transfer (ICT) type fluoroionophore arylvinyl-bipy (bipy = 2,2'-bipyridyl) is covalently tethered to the spirolactam form of rhodamine to afford fluorescent heteroditopic ligand 4. Compound 4 can be excited in the visible region, the emission of which undergoes sequential bathochromic shifts over an increasing concentration gradient of Zn(ClO(4))(2) in acetonitrile. Coordination of Zn(2+) stabilizes the ICT excited state of the arylvinyl-bipy component of 4, leading to the first emission color shift from blue to green. At sufficiently high concentrations of Zn(ClO(4))(2), the nonfluorescent spirolactam component of 4 is transformed to the fluorescent rhodamine, which turns the emission color from green to orange via intramolecular fluorescence resonance energy transfer (FRET) from the Zn(2+)-bound arylvinyl-bipy fluorophore to rhodamine. While this work offers a new design of ratiometric chemosensors, in which sequential analyte-induced emission band shifts result in the sampling of multiple colors at different concentration ranges (i.e., from blue to green to orange as [Zn(2+)] increases in the current case), it also reveals the nuances of rhodamine spirolactam chemistry that have not been sufficiently addressed in the published literature. These issues include the ability of rhodamine spirolactam as a fluorescence quencher via electron transfer, and the slow kinetics of spirolactam ring-opening effected by Zn(2+) coordination under pH neutral aqueous conditions.
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Affiliation(s)
- Kesavapillai Sreenath
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA
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33
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Li YP, Yang HR, Zhao Q, Song WC, Han J, Bu XH. Ratiometric and Selective Fluorescent Sensor for Zn2+ as an “Off–On–Off” Switch and Logic Gate. Inorg Chem 2012; 51:9642-8. [DOI: 10.1021/ic300738e] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ya-Ping Li
- Tianjin Key
Lab on Metal and Molecule-based Material
Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Hua-Rong Yang
- Tianjin Key
Lab on Metal and Molecule-based Material
Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Qiang Zhao
- Tianjin Key
Lab on Metal and Molecule-based Material
Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Wei-Chao Song
- Tianjin Key
Lab on Metal and Molecule-based Material
Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Jie Han
- Tianjin Key
Lab on Metal and Molecule-based Material
Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Xian-He Bu
- Tianjin Key
Lab on Metal and Molecule-based Material
Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
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34
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Hadad C, Garcı́a-Martı́nez JC, Rodrı́guez-López J. Layer-Block Dendrimers with Alternating Thienylenevinylene and Phenylenevinylene Units. J Org Chem 2012; 77:6223-30. [DOI: 10.1021/jo301054w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Caroline Hadad
- Facultad
de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, 13071
Ciudad Real, Spain
| | | | - Julián Rodrı́guez-López
- Facultad
de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, 13071
Ciudad Real, Spain
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35
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Sensing properties of silica nanoparticles functionalized with anion binding sites and sulforhodamine B as fluorogenic signalling unit. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.10.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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36
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Woo H, You Y, Kim T, Jhon GJ, Nam W. Fluorescence ratiometric zinc sensors based on controlled energy transfer. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33366j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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37
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Chen Y, Jiang J. Porphyrin-based multi-signal chemosensors for Pb2+ and Cu2+. Org Biomol Chem 2012; 10:4782-7. [DOI: 10.1039/c2ob25313e] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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38
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Lan M, Liu W, Ge J, Wu J, Wang H, Zhang W, Bi Y, Wang P. A polythiophene-derived ratiometric fluorescent sensor for highly sensitive determination of carbenicillin in aqueous solution. Chem Commun (Camb) 2012; 48:6818-20. [DOI: 10.1039/c2cc32910g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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39
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Anthony SP. Polymorph-Dependent Solid-State Fluorescence and Selective Metal-Ion-Sensor Properties of 2-(2-Hydroxyphenyl)-4(3H)-quinazolinone. Chem Asian J 2011; 7:374-9. [DOI: 10.1002/asia.201100832] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Indexed: 11/07/2022]
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40
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Song F, Ma X, Hou J, Huang X, Cheng Y, Zhu C. (R,R)-salen/salan-based polymer fluorescence sensors for Zn2+ detection. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.11.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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41
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Ashokkumar P, Ramakrishnan VT, Ramamurthy P. Photoinduced electron transfer (PET) based Zn2+ fluorescent probe: transformation of turn-on sensors into ratiometric ones with dual emission in acetonitrile. J Phys Chem A 2011; 115:14292-9. [PMID: 22066705 DOI: 10.1021/jp209061f] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Ratiometric sensors for the detection of metal ions have gained increasing attention due to its self-calibration tendency for the environmental effects. In this context, we have synthesized and characterized a dual emitting ratiometric Zn(2+) probe (1) having acridinedione as a fluorophore and N,N-bis(2-pyridylmethyl)amine (BPA) as a receptor unit. Existence of two different conformation of the molecule with photoinduced electron transfer (PET) from amine moiety to the acridinedione fluorophore leads to dual emission, namely locally excited (425 nm) and anomalous charge transfer emission (560 nm) in aprotic solvents. In the presence of one equivalent of Zn(2+), a 15-fold fluorescence enhancement in the locally excited state together with the quenching of charge transfer emission is observed. The intensity changes at the two emission peaks allow a ratiometric detection of Zn(2+) under PET signaling mechanism. The utilization of PET process for the ratiometric fluorescence change will further signify the importance of PET mechanism in sensing action. Addition of Zn(2+) to 1 in acetonitrile/water mixtures shows a single emission peak with fluorescence enhancement.
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Affiliation(s)
- P Ashokkumar
- National Centre for Ultrafast Processes, University of Madras, Taramani Campus, Chennai, India
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42
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Sun F, Zhang G, Zhang D, Xue L, Jiang H. Aqueous Fluorescence Turn-on Sensor for Zn2+ with a Tetraphenylethylene Compound. Org Lett 2011; 13:6378-81. [DOI: 10.1021/ol2026735] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Fei Sun
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Guanxin Zhang
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Deqing Zhang
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Lin Xue
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hua Jiang
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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43
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Dynamic multi-component covalent assembly for the reversible binding of secondary alcohols and chirality sensing. Nat Chem 2011; 3:943-8. [PMID: 22109274 PMCID: PMC3226768 DOI: 10.1038/nchem.1198] [Citation(s) in RCA: 150] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Accepted: 10/11/2011] [Indexed: 12/23/2022]
Abstract
Reversible covalent bonding is often employed for the creation of novel supramolecular structures, multi-component assemblies, and sensing ensembles. In spite of remarkable success of dynamic covalent systems, the reversible binding of a mono-alcohol with high strength is challenging. Here we show that a strategy of carbonyl activation and hemiaminal ether stabilization can be embodied in a four-component reversible assembly that creates a tetradentate ligand and incorporates secondary alcohols with exceptionally high affinity. Evidence is presented that the intermediate leading to binding and exchange of alcohols is an iminium ion. Further, to demonstrate the use of this assembly process we explored chirality sensing and enantiomeric excess determinations. An induced twist in the ligand by a chiral mono-ol results in large Cotton effects in the circular dichroism spectra indicative of the alcohol’s handedness. The strategy revealed in this study should prove broadly applicable for the incorporation of alcohols into supramolecular architecture construction.
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44
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Guerchais V, Fillaut JL. Sensory luminescent iridium(III) and platinum(II) complexes for cation recognition. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2011.04.006] [Citation(s) in RCA: 152] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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45
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A polymer based fluorescent sensor for Zn2+ detection and its application for constructing logic gates. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.10.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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46
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Dong Y, Koken B, Ma X, Wang L, Cheng Y, Zhu C. Polymer-based fluorescent sensor incorporating 2,2′-bipyridyl and benzo[2,1,3]thiadiazole moieties for Cu2+ detection. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.07.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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47
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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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48
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Shankar BH, Ramaiah D. Dansyl—Naphthalimide Dyads As Molecular Probes: Effect of Spacer Group on Metal Ion Binding Properties. J Phys Chem B 2011; 115:13292-9. [DOI: 10.1021/jp207895y] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Balaraman H. Shankar
- Photosciences and Photonics Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695 019, India
| | - Danaboyina Ramaiah
- Photosciences and Photonics Chemical Sciences and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695 019, India
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49
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Kuang GC, Allen JR, Baird MA, Nguyen BT, Zhang L, Morgan TJ, Levenson CW, Davidson MW, Zhu L. Balance between fluorescence enhancement and association affinity in fluorescent heteroditopic indicators for imaging zinc ion in living cells. Inorg Chem 2011; 50:10493-504. [PMID: 21905758 DOI: 10.1021/ic201728f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A fluorescent heteroditopic indicator for the zinc(II) ion possesses two different zinc(II) binding sites. The sequential coordination of zinc(II) at the two sites can be transmitted into distinct fluorescence changes. In the heteroditopic ligand system that our group developed, the formations of mono- and dizinc(II) complexes along an increasing gradient of zinc(II) concentration lead to fluorescence enhancement and an emission bathochromic shift, respectively. The extents of these two changes determine the sensitivity and, ultimately, the effectiveness of the heteroditopic indicator in quantifying zinc(II) ion over a large concentration range. In this work, a strategy to increase the degree of fluorescence enhancement upon the formation of the monozinc(II) complex of a heteroditopic ligand under simulated physiological conditions is demonstrated. Fluorination of the pyridyl groups in the pentadentate N,N,N'-tris(pyridylmethyl)ethyleneamino group reduces the apparent pK(a) value of the high-affinity site, which increases the degree of fluorescence enhancement as the monozinc(II) complex is forming. However, fluorination impairs the coordination strength of the high-affinity zinc(II) binding site, which in the triply fluorinated ligand reduces the binding strength to the level of the low-affinity 2,2'-bipyridyl. The potential of the reported ligands in imaging zinc(II) ion in living cells was evaluated. The subcellular localization properties of two ligands in five organelles were characterized. Both benefits and deficiencies of these ligands were revealed, which provides directions for the near future in this line of research.
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Affiliation(s)
- Gui-Chao Kuang
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA
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50
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Shim SY, Tae JS. Rhodamine Cyclen-based Fluorescent Chemosensor for the Detection of Cd2+. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.8.2928] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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