1
|
Exner J, Maisuls I, Massolle A, Klabunde S, Hansen MR, Strassert CA, Neugebauer J, Eckert H, Studer A. Electronic effects in profluorescent benzotriazinyl radicals: a combined experimental and theoretical study. Phys Chem Chem Phys 2021; 23:2999-3007. [PMID: 33480922 DOI: 10.1039/d0cp05732k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis, photophysical characterization, and quantum chemical calculations of a series of benzotriazinyl radicals and their styryl radical trapping products are presented. The benzotriazinyl radicals are non-luminescent but surprisingly the corresponding styryl radical trapping products exhibit high fluorescence quantum yields (up to 60% in some cases), making them highly valuable probes or labels. Additionally, the influence of the substitution pattern on the optical properties of the radical trapping products was observed experimentally and interpreted by means of quantum chemical calculations. Specific substitution patterns showed a bathochromic shift compared to the unsubstituted compound. Computationally, it was shown that this substitution pattern leads to a stronger energetic stabilization of the lowest unoccupied molecular orbital than the highest occupied molecular orbital. Analysis of the influence of the substitution pattern on the optical properties showed a bathochromic shift in several examples, which was interpreted by means of quantum chemical calculations.
Collapse
Affiliation(s)
- Jessica Exner
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany.
| | - Iván Maisuls
- Institut für Anorganische und Analytische Chemie, CiMIC, SoN, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany. and CeNTech, Westfälische Wilhelms-Universität Münster, Heisenbergstraße 11, 48149 Münster, Germany
| | - Anja Massolle
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany. and Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany.
| | - Sina Klabunde
- Institut für Physikalische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, 48149 Münster, Germany.
| | - Michael R Hansen
- Institut für Physikalische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, 48149 Münster, Germany.
| | - Cristian A Strassert
- Institut für Anorganische und Analytische Chemie, CiMIC, SoN, Westfälische Wilhelms-Universität Münster, Corrensstraße 28/30, 48149 Münster, Germany. and CeNTech, Westfälische Wilhelms-Universität Münster, Heisenbergstraße 11, 48149 Münster, Germany
| | - Johannes Neugebauer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany. and Center for Multiscale Theory and Computation, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany.
| | - Hellmut Eckert
- Institut für Physikalische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstraße 30, 48149 Münster, Germany. and Instituto de Fisica de São Carlos, Universidade de São Paulo, Avenida Trabalhador Sãocarlense 400, São Carlos, SP 13566-590, Brazil.
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149 Münster, Germany.
| |
Collapse
|
2
|
Zhang B, Xu L, Zhou Y, Zhang W, Wang Y, Zhu Y. Synthesis and activity of a coumarin-based fluorescent probe for hydroxyl radical detection. LUMINESCENCE 2019; 35:305-311. [PMID: 31876368 DOI: 10.1002/bio.3728] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/30/2019] [Accepted: 10/09/2019] [Indexed: 12/28/2022]
Abstract
As a type of reactive oxygen species (ROS), hydroxyl radical (·OH) is closely associated with many kinds of diseases. The present study aimed to develo p a novel OH fluorescent probe based on coumarin, a new compound that has not been previously reported. This probe exhibited good linear range and selectivity for ·OHl, and is able to avoid interference from some metal ions and other kinds of ROS (H2 O2 , O2 .- , 1 O2 , and HClO). Meanwhile, this probe has been used to evaluate the ·OH-scavenging efficiency of different compounds, such as isopropyl alcohol, cytosine, uracil, Tempo, Glutathione (GSH), and dimethyl sulfoxide (DMSO). Therefore, the present study shows that this probe not only can effectively measure the level of ·OH, but also can assess the ·OH-scavenging efficiency of different compounds. Furthermore this current study suggested that following further optimization, this probe may be potentially applied in the diagnosis of oxidative stress in human body.
Collapse
Affiliation(s)
- Bin Zhang
- Department of Horticulture, Tianjin Agricultural University, Tianjin, China
| | - Lijing Xu
- Department of Neurosurgery, Tianjin Hospital, Tianjin, China
| | - Yindi Zhou
- Department of Horticulture, Tianjin Agricultural University, Tianjin, China
| | - Weijian Zhang
- Graduate School, Tianjin Medical University, Tianjin, China
| | - Yuanhong Wang
- Department of Horticulture, Tianjin Agricultural University, Tianjin, China
| | - Yu Zhu
- Department of Clinical Laboratory, Huanhu Hospital, Tianjin, China
| |
Collapse
|
3
|
Bai X, Ng KKH, Hu JJ, Ye S, Yang D. Small-Molecule-Based Fluorescent Sensors for Selective Detection of Reactive Oxygen Species in Biological Systems. Annu Rev Biochem 2019; 88:605-633. [DOI: 10.1146/annurev-biochem-013118-111754] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Reactive oxygen species (ROS) encompass a collection of intricately linked chemical entities characterized by individually distinct physicochemical properties and biological reactivities. Although excessive ROS generation is well known to underpin disease development, it has become increasingly evident that ROS also play central roles in redox regulation and normal physiology. A major challenge in uncovering the relevant biological mechanisms and deconvoluting the apparently paradoxical roles of distinct ROS in human health and disease lies in the selective and sensitive detection of these transient species in the complex biological milieu. Small-molecule-based fluorescent sensors enable molecular imaging of ROS with great spatial and temporal resolution and have thus been appreciated as excellent tools for aiding discoveries in modern redox biology. We review a selection of state-of-the-art sensors with demonstrated utility in biological systems. By providing a systematic overview based on underlying chemical sensing mechanisms, we wish to highlight the strengths and weaknesses in prior sensor works and propose some guiding principles for the development of future probes.
Collapse
Affiliation(s)
| | | | - Jun Jacob Hu
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Hong Kong, P. R. China;, , , ,
| | - Sen Ye
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Hong Kong, P. R. China;, , , ,
| | - Dan Yang
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Hong Kong, P. R. China;, , , ,
| |
Collapse
|
4
|
Jing Y, Chaplin BP. Mechanistic Study of the Validity of Using Hydroxyl Radical Probes To Characterize Electrochemical Advanced Oxidation Processes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:2355-2365. [PMID: 28072535 DOI: 10.1021/acs.est.6b05513] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The detection of hydroxyl radicals (OH•) is typically accomplished by using reactive probe molecules, but prior studies have not thoroughly investigated the suitability of these probes for use in electrochemical advanced oxidation processes (EAOPs), due to the neglect of alternative reaction mechanisms. In this study, we investigated the suitability of four OH• probes (coumarin, p-chlorobenzoic acid, terephthalic acid, and p-benzoquinone) for use in EAOPs. Experimental results indicated that both coumarin and p-chlorobenzoic acid are oxidized via direct electron transfer reactions, while p-benzoquinone and terephthalic acid are not. Coumarin oxidation to form the OH• adduct product 7-hydroxycoumarin was found at anodic potentials lower than that necessary for OH• formation. Density functional theory (DFT) simulations found a thermodynamically favorable and non-OH• mediated pathway for 7-hydroxycoumarin formation, which is activationless at anodic potentials > 2.10 V/SHE. DFT simulations also provided estimates of E° values for a series of OH• probe compounds, which agreed with voltammetry results. Results from this study indicated that terephthalic acid is the most appropriate OH• probe compound for the characterization of electrochemical and catalytic systems.
Collapse
Affiliation(s)
- Yin Jing
- Department of Chemical Engineering, University of Illinois at Chicago , 810 South Clinton Street, Chicago, Illinois 60607, United States
| | - Brian P Chaplin
- Department of Chemical Engineering, University of Illinois at Chicago , 810 South Clinton Street, Chicago, Illinois 60607, United States
| |
Collapse
|
5
|
Challenges and advances in quantum dot fluorescent probes to detect reactive oxygen and nitrogen species: A review. Anal Chim Acta 2015; 862:1-13. [DOI: 10.1016/j.aca.2014.08.036] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 08/13/2014] [Accepted: 08/15/2014] [Indexed: 01/04/2023]
|
6
|
Mravljak J, Ojsteršek T, Pajk S, Sollner Dolenc M. Coumarin-based dual fluorescent spin-probes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.07.084] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
7
|
Peterson KL, Margherio MJ, Doan P, Wilke KT, Pierre VC. Basis for sensitive and selective time-delayed luminescence detection of hydroxyl radical by lanthanide complexes. Inorg Chem 2013; 52:9390-8. [PMID: 23889495 DOI: 10.1021/ic4009569] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Molecular probes for the detection of hydroxyl radical (HO•) by time-delayed luminescence spectroscopy directly in water at neutral pH with high sensitivity and selectivity are presented. The bimolecular probes consist of a lanthanide complex with open coordination sites and a reactive pre-antenna composed of an aromatic acid or amide; the latter binds to and sensitizes terbium emission upon hydroxylation by HO•. These probes exhibit long luminescence lifetimes compatible with time-delayed measurements that remove interfering background fluorescence from the sample. Six different reactive pre-antenna (benzoate, benzamide, isophthalate, isophthalamide, trimesate, and trimesamide) and two different terbium complexes [Tb-(1,4,7,10-tetraazacyclododecane-1,4,7-tris(acetic acid)) (Tb-DO3A) and Tb-(1,4,7,10-tetraazacyclododecane-1,7-bis(acetic acid)) (Tb-DO2A)] were evaluated. Of these the trimesamide/Tb-DO3A system enables the most sensitive detection of HO• with an about 1000-fold increase in metal-centered time-delayed emission upon hydroxylation of the pre-antenna to 2-hydroxytrimesamide. Excellent selectivity for both the trimesamide/Tb-DO3A and trimesate/Tb-DO3A systems over other reactive oxygen and nitrogen species are observed. Notably, the increase in metal-centered luminescence intensity is not associated with a decrease in the hydration number (q) of Tb-DO3A, suggesting that the antenna is interacting with the lanthanide via a second sphere coordination environment or that coordination by the antenna occurs by displacement of one or more of the carboxylate arms of DO3A. Formation of a weak ternary complex Tb-DO3A•hydroxytrimesamide was confirmed by temperature-dependent titration and a decrease in K(app) with increasing temperature.
Collapse
Affiliation(s)
- Katie L Peterson
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | | | | | | | | |
Collapse
|
8
|
|
9
|
Affiliation(s)
- Yuming Yang
- Department of Chemistry and State Key Laboratory
of Molecular Engineering of Polymers and Institutes of Biomedical
Sciences, Fudan University, Shanghai 200433, P. R. China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics
and Information Displays (KLOEID) and Institute of Advanced Materials
(IAM), Nanjing University of Posts and Telecommunications, Nanjing
210046, P. R. China
| | - Wei Feng
- Department of Chemistry and State Key Laboratory
of Molecular Engineering of Polymers and Institutes of Biomedical
Sciences, Fudan University, Shanghai 200433, P. R. China
| | - Fuyou Li
- Department of Chemistry and State Key Laboratory
of Molecular Engineering of Polymers and Institutes of Biomedical
Sciences, Fudan University, Shanghai 200433, P. R. China
| |
Collapse
|
10
|
Yan GP, Fairfull-Smith KE, Smith CD, Hanson GR, Bottle SE. Porphyrin containing isoindoline nitroxides as potential fluorescence sensors of free radicals. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424611003203] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A series of new spin-labeled porphyrin containing isoindoline nitroxide moieties were synthesized and characterized as potential free radical fluorescence sensors. Fluorescence-suppression was observed in the free-base monoradical porphyrins, whilst the free-base biradical porphyrins exhibited highly suppressed fluorescence about three times greater than the monoradical porphyrins. The observed fluorescence-suppression was attributed to enhanced intersystem crossing resulting from electronexchange between the doublet nitroxide and the excited porphyrin fluorophore. Notably, fluorescencesuppression was not as strong in the related metalated porphyrins, possibly due to insufficient spin coupling between the nitroxide and the porphyrin. Continuous wave EPR spectroscopy of the diradical porphyrins in fluid solution suggests that the nitroxyl-nitroxyl interspin distance is long enough and tumbling is fast enough not to detect dipolar coupling.
Collapse
Affiliation(s)
- Guo-Ping Yan
- School of Material Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, P.R. China
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Kathryn E. Fairfull-Smith
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Craig D. Smith
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Graeme R. Hanson
- Centre for Advanced Imaging, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Steven E. Bottle
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, Brisbane, QLD 4001, Australia
| |
Collapse
|
11
|
Morris JC, McMurtrie JC, Bottle SE, Fairfull-Smith KE. Generation of Profluorescent Isoindoline Nitroxides Using Click Chemistry. J Org Chem 2011; 76:4964-72. [DOI: 10.1021/jo200613r] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jason C. Morris
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology and ‡Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, Queensland 4001, Australia
| | - John C. McMurtrie
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology and ‡Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, Queensland 4001, Australia
| | - Steven E. Bottle
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology and ‡Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, Queensland 4001, Australia
| | - Kathryn E. Fairfull-Smith
- ARC Centre of Excellence for Free Radical Chemistry and Biotechnology and ‡Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, Queensland 4001, Australia
| |
Collapse
|
12
|
Enhancement of the Fluorescence Quenching Efficiency of DPPH• on Colloidal Nanocrystalline Quantum Dots in Aqueous Micelles. J Fluoresc 2011; 21:1941-9. [DOI: 10.1007/s10895-011-0893-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Accepted: 05/02/2011] [Indexed: 11/26/2022]
|
13
|
Pajk S, Garvas M, Štrancar J, Pečar S. Nitroxide–fluorophore double probes: a potential tool for studying membrane heterogeneity by ESR and fluorescence. Org Biomol Chem 2011; 9:4150-9. [DOI: 10.1039/c0ob01173h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
Chen X, Tian X, Shin I, Yoon J. Fluorescent and luminescent probes for detection of reactive oxygen and nitrogen species. Chem Soc Rev 2011; 40:4783-804. [DOI: 10.1039/c1cs15037e] [Citation(s) in RCA: 818] [Impact Index Per Article: 62.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
15
|
Blinco JP, Fairfull-Smith KE, Morrow BJ, Bottle SE. Profluorescent Nitroxides as Sensitive Probes of Oxidative Change and Free Radical Reactions. Aust J Chem 2011. [DOI: 10.1071/ch10442] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This paper presents a review on the use of tethered nitroxide–fluorophore molecules as probes of oxidative change and free radical generation and reaction. The proximity of the nitroxide free radical to the fluorophore suppresses the normal fluorescence emission process. Nitroxide free radical scavenging, metabolism or redox chemistry return the system to its natural fluorescent state and so these tethered nitroxide–fluorophore molecules are described as being profluorescent. A survey of profluorescent nitroxides found in the literature is provided as well as background on the mechanism of action and applications of these compounds as fluorometric probes within the fields of biological, materials and environmental sciences.
Collapse
|
16
|
|
17
|
Maki T, Soh N, Fukaminato T, Nakajima H, Nakano K, Imato T. Perylenebisimide-linked nitroxide for the detection of hydroxyl radicals. Anal Chim Acta 2009; 639:78-82. [DOI: 10.1016/j.aca.2009.02.044] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2008] [Revised: 02/23/2009] [Accepted: 02/24/2009] [Indexed: 10/21/2022]
|
18
|
Sato S, Tsunoda M, Suzuki M, Kutsuna M, Takido-uchi K, Shindo M, Mizuguchi H, Obara H, Ohya H. Synthesis and spectral properties of polymethine-cyanine dye-nitroxide radical hybrid compounds for use as fluorescence probes to monitor reducing species and radicals. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 71:2030-2039. [PMID: 18790663 DOI: 10.1016/j.saa.2008.07.045] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Revised: 07/24/2008] [Accepted: 07/27/2008] [Indexed: 05/26/2023]
Abstract
Various hybrid compounds comprised of two types of nitroxide radicals and either a pentamethine (Cy5) or trimethine cyanine (Cy3) were synthesized. The nitroxide radicals were linked either via an ester-bond to one or two N-alkyl carboxyl-terminated groups of Cy5, or via two amido-bonds (aminocarbonyl or carbonylamino group) to the 5-position of the indolenine moieties of Cy5 and Cy3. Changes in fluorescence and ESR intensities of the hybrid compounds were measured before and after addition of Na ascorbate in PBS (pH 7.0) to reduce the radicals. Among the hybrid compounds synthesized, those that linked the nitroxide radicals via an aminocarbonyl residue at the 5-position of the indolenine moieties on Cy5 and Cy3 exhibited a 1.8- and 5.1-fold increase in fluorescence intensity with the reduction of the nitroxide segment by the addition of Na ascorbate, respectively. In contrast, fluorescence intensity was not enhanced in the other hybrid compounds. Thus, the hybrid compounds which exhibited an increase in fluorescent intensity with radical reduction can be used in the quantitative measurement of reducing species such as Fe(2+) and ascorbic acid, and hydroxyl radicals. Because these hybrid compounds have the advantage of fluorescing at longer wavelengths-661 (Cy5) or 568 (Cy3)nm, respectively, they can be used to measure radical-reducing species or radicals either in solution or in vivo.
Collapse
Affiliation(s)
- Shingo Sato
- Graduate School of Science and Engineering, Yamagata University, Yonezawa-shi, Yamagata 992-8510, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Fairfull-Smith KE, Bottle SE. The Synthesis and Physical Properties of Novel Polyaromatic Profluorescent Isoindoline Nitroxide Probes. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800597] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
20
|
Sato S, Suzuki M, Soma T, Tsunoda M. Synthesis and properties of umbelliferone-nitroxide radical hybrid compounds as fluorescence and spin-label probes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2008; 70:799-804. [PMID: 18029225 DOI: 10.1016/j.saa.2007.09.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2007] [Revised: 08/30/2007] [Accepted: 09/18/2007] [Indexed: 05/25/2023]
Abstract
Two hybrid compounds 6 and 7, linked via an ester-bond between the 7-hydroxyl residue of an umbelliferone 1 and a carboxylic acid residue of two nitroxide radicals 3 and 4, and one hybrid compound 8, linked via an ester-bond between a 3-carboxylic acid residue of umbelliferone 2 and a hydroxyl residue of nitroxide radical 5, were synthesized in good yields, and their fluorescence and ESR spectra before and after the addition of L-ascorbic acid sodium salt in PBS (pH 7.0) were measured. The ESR intensities of 6 and 7 were proportionally reduced after the addition of ascorbic acid sodium salt, and their fluorescence intensities were increased maximally by eight- and nine-fold, respectively. However, the fluorescence intensity of 8 was essentially unchanged.
Collapse
Affiliation(s)
- Shingo Sato
- Department of Chemistry and Chemical Engineering, Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa-shi, Yamagata 992-8510, Japan.
| | | | | | | |
Collapse
|
21
|
Nanosilver resonance scattering spectral method for determination of hydroxyl radical and its application. ACTA ACUST UNITED AC 2008. [DOI: 10.1007/s11426-008-0005-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
22
|
Hrdlovič P, Chmela Š, Danko M, Sarakha M, Guyot G. Spectral Properties of Probes Containing Benzothioxanthene Chromophore Linked with Hindered Amine in Solution and in Polymer Matrices. J Fluoresc 2007; 18:393-402. [DOI: 10.1007/s10895-007-0279-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2007] [Accepted: 10/30/2007] [Indexed: 11/30/2022]
|
23
|
Fluorescence enhancement assay for trace iron(II) using Pyr-tempo as a spin label fluorescent probe. Mikrochim Acta 2006. [DOI: 10.1007/s00604-006-0639-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
24
|
Soh N. Recent advances in fluorescent probes for the detection of reactive oxygen species. Anal Bioanal Chem 2006; 386:532-43. [PMID: 16609844 DOI: 10.1007/s00216-006-0366-9] [Citation(s) in RCA: 237] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2006] [Accepted: 02/15/2006] [Indexed: 10/24/2022]
Abstract
Reactive oxygen species (ROS) have captured the interest of many researchers in the chemical, biological, and medical fields since they are thought to be associated with various pathological conditions. Fluorescent probes for the detection of ROS are promising tools with which to enhance our understanding of the physiological roles of ROS, because they provide spatial and temporal information about target biomolecules in in vivo cellular systems. ROS probes, designed to detect specific ROS with a high selectivity, would be desirable, since it is now becoming clear that each ROS has its own unique physiological activity. However, dihydro-compounds such as 2',7'-dichlorodihydrofluorescein (DCFH), which have traditionally been used for detecting ROS, tend to react with a wide variety of ROS and are not completely photostable. Some attractive fluorescent probes that exhibit a high degree of selectivity toward specific ROS have recently been reported, and these selective probes are expected to have great potential for elucidating unknown physiological mechanisms associated with their target ROS. This review focuses on the design, detection mechanism, and performance of fluorescent probes for the detection of singlet oxygen ((1)O(2)), hydrogen peroxide (H(2)O(2)), hydroxyl radicals ((.)OH), or superoxide anion (O(2) (-.)), a field in which remarkable progress has been achieved in the last few years.
Collapse
Affiliation(s)
- Nobuaki Soh
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, 744, Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan.
| |
Collapse
|
25
|
Chen JL, Zhuo SJ, Wu YQ, Fang F, Li L, Zhu CQ. High selective determination iron(II) by its enhancement effect on the fluorescence of pyrene-tetramethylpiperidinyl (TEMPO) as a spin fluorescence probe. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2006; 63:438-43. [PMID: 15996513 DOI: 10.1016/j.saa.2005.04.057] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2005] [Accepted: 04/15/2005] [Indexed: 05/03/2023]
Abstract
A novel fluorescence method determination for iron(II) with a high selectivity and sensitivity has been proposed, based on the enhancement of fluorescence signals resulting from specific redox reaction between synthesized spin fluorescence probe pyrene-tetramethylpiperidinyl (TEMPO) and iron(II). Under the experimental conditions, fluorescent probe displayed a rapid and linear response for iron(II) over the concentration range from 2.4 x 10(-7) to 3.6 x 10(-6) mol/L. The limit of detection was 4.0 x 10(-8) mol/L. The relative standard deviation of six replicate measurements was 1.90% for 3.0 x 10(-7) mol/L iron(II). Because of the specific redox reaction between developed spin fluorescence probe and iron(II), there are few interference by other ions, especially in the presence of relative high concentration iron(III). The method has been successfully applied for iron(II) determinations in two different kinds of real samples. Results determined by the proposed method agree favorably with those determined UV-vis spectrometry method with 1,10-phenanthroline.
Collapse
Affiliation(s)
- Jin-Long Chen
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China
| | | | | | | | | | | |
Collapse
|
26
|
Keddie DJ, Johnson TE, Arnold DP, Bottle SE. Synthesis of profluorescent isoindoline nitroxides via palladium-catalysed Heck alkenylation. Org Biomol Chem 2005; 3:2593-8. [PMID: 15999192 DOI: 10.1039/b504354a] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of a new structural class of isoindoline nitroxides (aminoxyls), accessible via the palladium-catalysed Heck reaction, is presented. Reaction of the aryl bromoamine, 5-bromo-1,1,3,3-tetramethylisoindoline (4) or dibromoamine, 5,6-dibromo-1,1,3,3-tetramethylisoindoline (5) or the analogous bromonitroxides 6 and 7 with methyl acrylate gives the acrylate substituted tetramethylisoindoline amines 8 and 10 and nitroxides 12 and 14. Similarly, the reaction of the aryl bromides and dibromides 4-7 with methyl 4-vinylbenzoate gives the carboxystyryl substituted tetramethylisoindoline amines 9 and 11 and the analogous nitroxides 13 and 15. The carboxystyryl tetramethylisoindoline nitroxides demonstrate strongly suppressed fluorescence, which is revealed upon removal of the free radical by reduction or radical coupling.
Collapse
Affiliation(s)
- Daniel J Keddie
- School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, Q4001 Australia
| | | | | | | |
Collapse
|
27
|
Bian ZY, Guo XQ, Zhao YB, Du JO. Probing the Hydroxyl Radical-Mediated Reactivity of Peroxynitrite by a Spin-Labeling Fluorophore. ANAL SCI 2005; 21:553-9. [PMID: 15913147 DOI: 10.2116/analsci.21.553] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The decomposition of peroxynitrite at physiological pH yielded a hydroxyl radical, which reacted rapidly with dimethyl sulfoxide (DMSO) to produce a methyl radical (*CH3), which was then trapped by a spin-label fluorophore nitroxide-linked naphthalene (NTEMPO), a carbon-centered radical probe with a low fluorescence intensity, and transformed to a stable diamagnetic O-alkoxyamine, a high-fluorescence compound. The fluorescence increment was proportional to the concentration of the hydroxyl radical, and then to the concentration of peroxynitrite. NTEMPO therefore was demonstrated to be capable of detecting hydroxyl radicals generated from peroxynitrite, and the method was proved to be simple and sensitive. The hydroxyl radical-mediated reactivities of peroxynitrite to several amino acids, such as tyrosine, phenylalanine and histidine, were then evaluated by the spin-labeling fluorophore NTEMPO at pH 7.4 and, 37 degrees C. The obtained data were in good agreement with the reference values, respectively.
Collapse
Affiliation(s)
- Zhao-Yang Bian
- Key Laboratory of Analytical Sciences of MOE, Department of Chemistry, Xiamen University, Xiamen 361005, China
| | | | | | | |
Collapse
|