1
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Said AI, Staneva D, Angelova S, Grabchev I. Self-Associated 1,8-Naphthalimide as a Selective Fluorescent Chemosensor for Detection of High pH in Aqueous Solutions and Their Hg 2+ Contamination. SENSORS (BASEL, SWITZERLAND) 2022; 23:399. [PMID: 36616999 PMCID: PMC9824833 DOI: 10.3390/s23010399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/21/2022] [Accepted: 12/26/2022] [Indexed: 06/17/2023]
Abstract
A novel diamino triazine based 1,8-naphthalimide (NI-DAT) has been designed and synthesized. Its photophysical properties have been investigated in different solvents and its sensory capability evaluated. The fluorescence emission of NI-DAT is significantly impacted by the solvent polarity due to its inherent intramolecular charge transfer character. Moreover, the fluorescence emission quenched at higher pH as a result of photo-induced electron transfer (PET) from triazine moiety to 1,8-naphthalimide after cleaving hydrogen bonds in the self-associated dimers. Furthermore, the new chemosensor exhibited a good selectivity and sensitivity towards Hg2+ among all the used various cations and anions in the aqueous solution of ethanol (5:1, v/v, pH = 7.2, Tampon buffer). NI-DAT emission at 540 nm was quenched remarkably only by Hg2+, even in the presence of other cations or anions as interfering analytes. Job's plot revealed a 2:1 stoichiometric ratio for NI-DAT/Hg2+ complex, respectively.
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Affiliation(s)
- Awad I. Said
- Faculty of Medicine, Sofia University “St. Kliment Ohridski”, 1407 Sofia, Bulgaria
- Department of Chemistry, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Desislava Staneva
- Department of Textile, Leather and Fuels, University of Chemical Technology and Metallurgy, 1756 Sofia, Bulgaria
| | - Silvia Angelova
- Institute of Optical Materials and Technologies “Acad. J. Malinowski”, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Ivo Grabchev
- Faculty of Medicine, Sofia University “St. Kliment Ohridski”, 1407 Sofia, Bulgaria
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2
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Bakov VV, Georgiev NI, Bojinov VB. A Novel Fluorescent Probe for Determination of pH and Viscosity Based on a Highly Water-Soluble 1,8-Naphthalimide Rotor. Molecules 2022; 27:molecules27217556. [PMID: 36364383 PMCID: PMC9657100 DOI: 10.3390/molecules27217556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 10/29/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022] Open
Abstract
A novel highly water-soluble 1,8-naphthalimide with pH and viscosity-sensing fluorescence was synthesized and investigated. The synthesized compound was designed as a molecular device in which a molecular rotor and molecular “off-on” switcher were integrated. In order to obtain a TICT driven molecular motion at C-4 position of the 1,8-naphthalimide fluorophore, a 4-methylpiperazinyl fragment was introduced. The molecular motion was confirmed after photophysical investigation in solvents with different viscosity; furthermore, the fluorescence-sensing properties of the examined compound were investigated in 100% aqueous medium and it was found that it could be used as an efficient fluorescent probe for pH. Due to the non-emissive deexcitation nature of the TICT fluorophore, the novel system showed low yellow–green emission, which represented “power-on”/“rotor-on” state. The protonation of the methylpiperazine amine destabilized the TICT process, which was accompanied by fluorescence enhancement indicating a “power-on”/“rotor-off” state of the system. The results obtained clearly illustrated the great potential of the synthesized compound to serve as pH- and viscosity-sensing material in aqueous solution.
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Affiliation(s)
- Ventsislav V. Bakov
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
| | - Nikolai I. Georgiev
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
- Correspondence: (N.I.G.); (V.B.B.); Tel.: +359-2-8163207 (N.I.G.); +359-2-8163206 (V.B.B.)
| | - Vladimir B. Bojinov
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
- Bulgarian Academy of Sciences, 1040 Sofia, Bulgaria
- Correspondence: (N.I.G.); (V.B.B.); Tel.: +359-2-8163207 (N.I.G.); +359-2-8163206 (V.B.B.)
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3
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A chemodosimeter for the detection of hydroxide using an anthraquinone-based receptor: Photophysical properties and X-ray crystallography. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Georgiev NI, Krasteva PV, Bakov VV, Bojinov VB. A Highly Water-Soluble and Solid State Emissive 1,8-Naphthalimide as a Fluorescent PET Probe for Determination of pHs, Acid/Base Vapors, and Water Content in Organic Solvents. Molecules 2022; 27:molecules27134229. [PMID: 35807479 PMCID: PMC9268048 DOI: 10.3390/molecules27134229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 12/25/2022] Open
Abstract
A new highly water-soluble 1,8-naphthalimide fluorophore designed on the “fluorophore-spacer-receptor1-receptor2” model has been synthesized. Due to the unusually high solubility in water, the novel compound proved to be a selective PET-based probe for the determination of pHs in aqueous solutions and rapid detection of water content in organic solvents. Based on the pH dependence of the probe and its high water solubility, the INH logic gate was achieved using NaOH and water as chemical inputs, where NaOH is the disabler and the water is an enabler. In addition, the probe showed effective fluorescence “off-on” reversibility on glass support after exposure to acid and base vapors, which defines it as a promising platform for rapid detection of acid/base vapors in the solid-state, thus extending the molecular sensing concept from solution to the solid support.
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Affiliation(s)
- Nikolai I. Georgiev
- Correspondence: (N.I.G.); (V.B.B.); Tel.: +35-(92)-8163207 (N.I.G.); +35-(92)-8163206 (V.B.B.)
| | | | | | - Vladimir B. Bojinov
- Correspondence: (N.I.G.); (V.B.B.); Tel.: +35-(92)-8163207 (N.I.G.); +35-(92)-8163206 (V.B.B.)
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5
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Liu Y, Yu Y, Meng Q, Wei Q, He W, Zhao Q, Tang C, Feng X, Zhang J. A fluorescent pH probe for evaluating the freshness of chicken breast meat. Food Chem 2022; 384:132554. [PMID: 35245748 DOI: 10.1016/j.foodchem.2022.132554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/23/2022] [Accepted: 02/23/2022] [Indexed: 01/17/2023]
Abstract
A fluorescent probe, Nap-MOR, based on the naphthalimide fluorophore, was designed and developed for pH measurement in aqueous solutions. Nap-MOR had a close linear relationship between fluorescence intensity and pH, in the range 4.5-8, which covers the full range of pH found in normal fresh, defective and spoiled meat. pH measurement with Nap-MOR was free from interference by a wide range of ions and biochemicals found in meat and the results were not significantly different in comparison with a pH meter. Therefore, Nap-MOR is a robust and convenient way to evaluate the freshness of chicken breast meat by measuring its pH.
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Affiliation(s)
- Yuning Liu
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Laboratory of Grass Product Safety Risk Assessment of Ministry of Agriculture and Rural Affairs, Institute of Grassland Research, Chinese Academy of Agricultural Sciences, Hohhot 010010, China
| | - Yanan Yu
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Qingshi Meng
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Qing Wei
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Weizhao He
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Qingyu Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Chaohua Tang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xiaohui Feng
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Junmin Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Scientific Observing and Experiment Station of Animal Genetic Resources and Nutrition in North China of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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6
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Fluorophore Tagged Mixed Ligand Copper(II) Complexes: Synthesis, Structural Characterization, Protein Binding, DNA Cleavage and Anticancer Activity. ChemistrySelect 2021. [DOI: 10.1002/slct.202103314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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7
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Song ZG, Yuan Q, Lv P, Chen K. Research Progress of Small Molecule Fluorescent Probes for Detecting Hypochlorite. SENSORS 2021; 21:s21196326. [PMID: 34640646 PMCID: PMC8512788 DOI: 10.3390/s21196326] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 11/19/2022]
Abstract
Hypochlorous acid (HOCl) generates from the reaction between hydrogen peroxide and chloride ions via myeloperoxidase (MPO)-mediated in vivo. As very important reactive oxygen species (ROS), hypochlorous acid (HOCl)/hypochlorite (OCl−) play a crucial role in a variety of physiological and pathological processes. However, excessive or misplaced production of HOCl/OCl− can cause variety of tissue damage and human diseases. Therefore, rapid, sensitive, and selective detection of OCl− is very important. In recent years, the fluorescent probe method for detecting hypochlorous acid has been developed rapidly due to its simple operation, low toxicity, high sensitivity, and high selectivity. In this review, the progress of recently discovered fluorescent probes for the detection of hypochlorous acid was summarized with the aim to provide useful information for further design of better fluorescent probes.
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Affiliation(s)
- Zhi-Guo Song
- The Joint Research Center of Guangzhou University and Keele Univeristy for Gene Interference and Application, School of Life Science, Guangzhou University, Guangzhou 510006, China; (Z.-G.S.); (Q.Y.)
- Zhejiang Guoneng Technology Co., Ltd., 1518 Mengxi Road, Huzhou 313000, China
| | - Qing Yuan
- The Joint Research Center of Guangzhou University and Keele Univeristy for Gene Interference and Application, School of Life Science, Guangzhou University, Guangzhou 510006, China; (Z.-G.S.); (Q.Y.)
| | - Pengcheng Lv
- The Joint Research Center of Guangzhou University and Keele Univeristy for Gene Interference and Application, School of Life Science, Guangzhou University, Guangzhou 510006, China; (Z.-G.S.); (Q.Y.)
- Correspondence: (P.L.); (K.C.); Tel./Fax: +86-20-3936-6915 (P.L. & K.C.)
| | - Kun Chen
- The Joint Research Center of Guangzhou University and Keele Univeristy for Gene Interference and Application, School of Life Science, Guangzhou University, Guangzhou 510006, China; (Z.-G.S.); (Q.Y.)
- Correspondence: (P.L.); (K.C.); Tel./Fax: +86-20-3936-6915 (P.L. & K.C.)
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8
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Huang L, Chen Y, Zhao Y, Wang Y, Xiong J, Zhang J, Wu X, Zhou Y. A ratiometric near-infrared naphthalimide-based fluorescent probe with high sensitivity for detecting Fe2+ in vivo. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.06.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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9
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A general strategy to quantify analytes through fluorescence chromaticity and luminosity. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.07.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Cordeiro Dantas WF, Duarte LGTA, Rodembusch FS, Poppi RJ, Zambon Atvars TD. Evaluation of the acidic strengths on electronic ground and excited states of proton transfer dye using Excitation-Emission fluorescence matrix (EEM) and Multivariate Curve Resolution with Alternating Least Squares (MCR-ALS). Methods Appl Fluoresc 2020; 8:045006. [PMID: 33021214 DOI: 10.1088/2050-6120/abafc4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Multivariate Curve Resolution with Alternating Least Squares (MCR-ALS) was for the first time successfully used to evaluate an intricate photophysical behavior, where deprotonation on the electronic ground state (S0), intra and intermolecular proton transfer processes (ESPT and ESIPT) on the electronic excited state (S1) can simultaneously be presented. In this sense, the organic dye 2-(2'-hydroxyphenyl)benzothiazole (HBT) was used as a proof-of-concept model, where MCR-ALS showed to be a powerful tool for discriminate chemical reactions that occur concomitantly on different potential energy surfaces, which include photochemical reactions. As a result, the chemometric method showed to be a straightforward approach for the determination of the acidic strengths of those equilibria were estimated as 8.61 and 1.11 to hydroxyl deprotonation on electronic ground and excited states, respectively.
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Affiliation(s)
| | - Luís Gustavo Teixeira Alves Duarte
- Chemistry Institute, University of Campinas, Campinas, Brazil.,Grupo de Pesquisa em Fotoquímica Orgânica Aplicada, Universidade Federal do Rio Grande do Sul - Instituto de Química, Avenida Bento Gonçalves 9500. CEP 91501-970 Porto Alegre-RS, Brazil
| | - Fabiano Severo Rodembusch
- Grupo de Pesquisa em Fotoquímica Orgânica Aplicada, Universidade Federal do Rio Grande do Sul - Instituto de Química, Avenida Bento Gonçalves 9500. CEP 91501-970 Porto Alegre-RS, Brazil
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11
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Colorimetric Chemosensor and Turn on Fluorescence Probe for pH Monitoring Based on Xanthene Dye Derivatives and its Bioimaging of Living Escherichia coli Bacteria. J Fluoresc 2020; 30:601-612. [PMID: 32285236 DOI: 10.1007/s10895-020-02522-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 03/09/2020] [Indexed: 10/24/2022]
Abstract
A new turn on fluorescence probe based on 3',6'-dihydroxy-6-methyl-2-((pyridin-2-ylmethylene)amino)-4-(p-tolyl)spiro[benzo[f]isoindole-1,9'-xanthen]-3(2H)-one (BFFPH) derived from benzo[f]fluorescein was prepared. Full characterization of the prepared probe using spectroscopic analysis was described such as IR, NMR and MS spectra. The sensitivity of BFFPH for monitoring of pH change in alkaline medium was studied. BFFPH exhibited a high sensitivity to alkaline pH by two pKa values at 8.82 and 10.66 in UV/vis spectroscopy titration. The pH monitoring was studied in broad range of pH values (2.5-12.2) at two pKa values at 8.72 and 10.73 by recording the effect of pH on the fluorescence intensity of BFFPH. The acid-base reversibility character of the probe was investigated as well as the effect of the pH change on the fluorescence quantum yield. The application of the prepared BFFPH probe for detection of living Escherichia coli (E. coli) bacteria using confocal fluorescence microscope was investigated.
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12
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Dong Y, Xiao H, Xing L, Wu C, Zhou J, Zhou Z, Liu Y, Zhuo S, Li P. Two-photon fluorescence visualization of lysosomal pH changes during mitophagy and cell apoptosis. Talanta 2020; 209:120549. [DOI: 10.1016/j.talanta.2019.120549] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 10/28/2019] [Accepted: 11/09/2019] [Indexed: 01/24/2023]
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13
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Zhang H, Qu Y, Zhao K, Wang C, Wu Y, Wu H. A fluorescence “on–off” sensor for the highly selective and sensitive detection of Cu
2+
ion. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900337] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Han Zhang
- School of Chemical EngineeringShaanxi Defence Vocational & Technical College Xi'an Shaanxi People's Republic of China
| | - Yao Qu
- School of Chemical and Biological EngineeringLanzhou Jiaotong University Lanzhou Gansu People's Republic of China
| | - Kun Zhao
- School of Chemical and Biological EngineeringLanzhou Jiaotong University Lanzhou Gansu People's Republic of China
| | - Cong Wang
- School of Chemical and Biological EngineeringLanzhou Jiaotong University Lanzhou Gansu People's Republic of China
| | - Yancong Wu
- School of Chemical and Biological EngineeringLanzhou Jiaotong University Lanzhou Gansu People's Republic of China
| | - Huilu Wu
- School of Chemical and Biological EngineeringLanzhou Jiaotong University Lanzhou Gansu People's Republic of China
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14
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Qu Y, Wu Y, Wang C, Zhao K, Wu H. A selective fluorescence probe for copper(II) ion in aqueous solution based on a 1,8-naphthalimide Schiff base derivative. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2019. [DOI: 10.1515/znb-2019-0095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Abstract
In order to realize real-time monitoring of Cu2+, a new fluorescent probe HL, a Schiff base derivative of N-n-butyl-4-[2]-1,8-naphthalimide, has been designed and synthesized. In methanol-HEPES [2-(4-(2-hydroxyethyl)-1-piperazinyl)-ethanesulfonic acid] solution (1:1, v/v, pH = 7.4) HL showed excellent selectivity towards Cu2+ over other common coexisting metal ions. The fluorescence intensity for HL showed a good linearity with the concentration of Cu2+ ions in the range of 0.5–5.0 μm. Based on combined fluorescence titration, Job’s plot analysis, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry results, Cu2+ forms a 1:2 complex with L. The fluorescence intensity of HL exhibits significant quenching after binding with Cu2+, owing to the strong, intrinsic paramagnetic behavior of Cu2+. Ultimately, in order to test the performance of the synthesized probe, HL was preliminarily applied to the determination of Cu2+ in the Yellow River and in tap water with satisfying results.
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Affiliation(s)
- Yao Qu
- School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou, Gansu, 730070 , P.R. China
| | - Yancong Wu
- School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou, Gansu, 730070 , P.R. China
| | - Cong Wang
- School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou, Gansu, 730070 , P.R. China
| | - Kun Zhao
- School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou, Gansu, 730070 , P.R. China
| | - Huilu Wu
- School of Chemical and Biological Engineering , Lanzhou Jiaotong University , Lanzhou, Gansu, 730070 , P.R. China
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15
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Zheng D, Raeisolsadati Oskouei M, Sanders HJ, Qian J, Williams RM, Brouwer AM. Photophysics of perylene monoimide-labelled organocatalysts. Photochem Photobiol Sci 2019; 18:524-533. [DOI: 10.1039/c8pp00462e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A fluorophore-tagged organocatalyst undergoes electron transfer in polar solvents allowing to sense the presence of its free quinuclidine catalytic site.
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Affiliation(s)
- Dongdong Zheng
- van ‘t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1090 GD Amsterdam
- The Netherlands
| | | | - Hans J. Sanders
- van ‘t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1090 GD Amsterdam
- The Netherlands
| | - Junhong Qian
- van ‘t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1090 GD Amsterdam
- The Netherlands
| | - René M. Williams
- van ‘t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1090 GD Amsterdam
- The Netherlands
| | - Albert M. Brouwer
- van ‘t Hoff Institute for Molecular Sciences
- University of Amsterdam
- 1090 GD Amsterdam
- The Netherlands
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16
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Xin F, Tian Y, Gao C, Guo B, Wu Y, Zhao J, Jing J, Zhang X. A two-photon fluorescent probe for basal formaldehyde imaging in zebrafish and visualization of mitochondrial damage induced by FA stress. Analyst 2019; 144:2297-2303. [DOI: 10.1039/c8an02108b] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A two-photon fluorescence probe Mito-FA-FP can monitor mitochondrial morphology change and image endogenous FA in vivo.
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Affiliation(s)
- Fangyun Xin
- Beijing Key Laboratory of Photo-electronic/Electro-photonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Analytical and Testing Centre
- Beijing Institute of Technology
| | - Yong Tian
- Beijing Key Laboratory of Photo-electronic/Electro-photonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Analytical and Testing Centre
- Beijing Institute of Technology
| | - Congcong Gao
- Beijing Key Laboratory of Photo-electronic/Electro-photonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Analytical and Testing Centre
- Beijing Institute of Technology
| | - Bingpeng Guo
- Beijing Key Laboratory of Photo-electronic/Electro-photonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Analytical and Testing Centre
- Beijing Institute of Technology
| | - Yulong Wu
- Beijing Key Laboratory of Photo-electronic/Electro-photonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Analytical and Testing Centre
- Beijing Institute of Technology
| | - Junfang Zhao
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- P. R. China
| | - Jing Jing
- Beijing Key Laboratory of Photo-electronic/Electro-photonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Analytical and Testing Centre
- Beijing Institute of Technology
| | - Xiaoling Zhang
- Beijing Key Laboratory of Photo-electronic/Electro-photonic Conversion Materials
- Key Laboratory of Cluster Science of Ministry of Education
- School of Chemistry and Chemical Engineering
- Analytical and Testing Centre
- Beijing Institute of Technology
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17
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Chen MT, Zhang Y, Vysotsky MO, Lindner JO, Li MH, Lin MJ, Würthner F. 1,1′-Bi(2-naphthol-4,5-dicarboximide)s: blue emissive axially chiral scaffolds with aggregation-enhanced emission properties. Org Chem Front 2019. [DOI: 10.1039/c9qo01090d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Novel electron-deficient 1,1′-binaphthol derivatives bearing two dicarboximide groups at the peri-positions show intense blue luminescence and aggregation-enhanced emission characteristics.
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Affiliation(s)
- Meng-Ting Chen
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- 350116 Fuzhou
- China
| | - Yang Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- 350116 Fuzhou
- China
| | - Myroslav O. Vysotsky
- Institut für Organische Chemie & Center for Nanosystems Chemistry
- Universität Würzburg
- 97074 Würzburg
- Germany
| | - Joachim O. Lindner
- Institut für Organische Chemie & Center for Nanosystems Chemistry
- Universität Würzburg
- 97074 Würzburg
- Germany
| | - Meng-Hua Li
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- 350116 Fuzhou
- China
| | - Mei-Jin Lin
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- 350116 Fuzhou
- China
| | - Frank Würthner
- Institut für Organische Chemie & Center for Nanosystems Chemistry
- Universität Würzburg
- 97074 Würzburg
- Germany
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18
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Wu C, Vellaisamy K, Yang G, Dong ZZ, Leung CH, Liu JB, Ma DL. A reaction-based luminescent switch-on sensor for the detection of OH - ions in simulated wastewater. Dalton Trans 2018; 46:6677-6682. [PMID: 28484771 DOI: 10.1039/c7dt00633k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A series of luminescent iridium(iii) complexes were synthesized and evaluated for their ability to interact with hydroxide ions in semi-aqueous media at ambient temperature. Upon the addition of OH-, a nucleophilic aromatic substitution reaction takes place at the bromine groups of the N^N ligand of complex 1, resulting in the generation of a yellow-green luminescence. Complex 1 showed a 35-fold enhanced emission at pH 14 when compared to neutral pH, and the detection limit for OH- ions was 4.96 μM. Complex 1 exhibited high sensitivity and selectivity, long-lived luminescence and impressive stability. Additionally, we have demonstrated the practical application of complex 1 to detect OH- ions in simulated wastewater.
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Affiliation(s)
- Chun Wu
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China.
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19
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Georgiev NI, Dimitrova MD, Mavrova AT, Bojinov VB. Synthesis, fluorescence-sensing and molecular logic of two water-soluble 1,8-naphthalimides. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 183:7-16. [PMID: 28432919 DOI: 10.1016/j.saa.2017.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 04/08/2017] [Accepted: 04/14/2017] [Indexed: 06/07/2023]
Abstract
Two novel highly water-soluble fluorescence sensing 1,8-naphthalimides are synthesized and investigated. The novel compounds are designed on the "fluorophore-receptor1-spacer-receptor2" model as a molecular fluorescence probe for determination of cations and anions in 100% aqueous media. The novel probes comprising N-imide and N-phenylpiperazine or morpholine substituents are capable to operate simultaneously via ICT and PET signaling mechanism as a function of pH and to recognize selectively Cu2+ and Hg2+ over the other representative metal ions. Due to the remarkable fluorescence changes in the presence of protons, hydroxyl anions, Hg2+ and Cu2+, INH and doubly disabled INH logic gates are executed and the systems are able to act as a single output combinatorial logic circuit with four chemical inputs.
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Affiliation(s)
- Nikolai I Georgiev
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
| | - Margarita D Dimitrova
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
| | - Anelia Ts Mavrova
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria
| | - Vladimir B Bojinov
- Department of Organic Synthesis, University of Chemical Technology and Metallurgy, 8 Kliment Ohridsky Str., 1756 Sofia, Bulgaria.
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20
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Solid fluorescence sensors obtained by functionalization of photocrosslinked water-swollen acrylic membranes with 4-piperazine naphthalimide derivatives. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.07.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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An easily Prepared Fluorescent pH Probe Based on Dansyl. J Fluoresc 2016; 26:1709-14. [DOI: 10.1007/s10895-016-1861-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Accepted: 06/14/2016] [Indexed: 11/25/2022]
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22
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Yin J, Hu Y, Yoon J. Fluorescent probes and bioimaging: alkali metals, alkaline earth metals and pH. Chem Soc Rev 2016; 44:4619-44. [PMID: 25317749 DOI: 10.1039/c4cs00275j] [Citation(s) in RCA: 417] [Impact Index Per Article: 52.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
All living species and life forms have an absolute requirement for bio-functional metals and acid-base equilibrium chemistry owing to the critical roles they play in biological processes. Hence, a great need exists for efficient methods to detect and monitor biometals and acids. In the last few years, great attention has been paid to the development of organic molecule based fluorescent chemosensors. The availability of new synthetic fluorescent probes has made fluorescence microscopy an indispensable tool for tracing biologically important molecules and in the area of clinical diagnostics. This review highlights the recent advances that have been made in the design and bioimaging applications of fluorescent probes for alkali metals and alkaline earth metal cations, including lithium, sodium and potassium, magnesium and calcium, and for pH determination within biological systems.
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Affiliation(s)
- Jun Yin
- Department of Chemistry and Nano Science, Global Top 5 Research Program, Ewha Womans University, Seoul 120-750, Korea.
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23
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Langdon-Jones EE, Lloyd D, Hayes AJ, Wainwright SD, Mottram HJ, Coles SJ, Horton PN, Pope SJA. Alkynyl-naphthalimide Fluorophores: Gold Coordination Chemistry and Cellular Imaging Applications. Inorg Chem 2015; 54:6606-15. [DOI: 10.1021/acs.inorgchem.5b00954] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Emily E. Langdon-Jones
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - David Lloyd
- School of Biosciences, Main Building, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Anthony J. Hayes
- School of Biosciences, Main Building, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Shane D. Wainwright
- School of Biosciences, Main Building, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Huw J. Mottram
- School of Pharmacy,
Redwood Building, Cardiff University, Cardiff CF10 3NB, United Kingdom
| | - Simon J. Coles
- UK National Crystallographic Service, Chemistry,
Faculty of Natural and Environmental Sciences, University of Southampton, Highfield,
Southampton SO17 1BJ, United Kingdom
| | - Peter N. Horton
- UK National Crystallographic Service, Chemistry,
Faculty of Natural and Environmental Sciences, University of Southampton, Highfield,
Southampton SO17 1BJ, United Kingdom
| | - Simon J. A. Pope
- School of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, United Kingdom
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24
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Novel nanosized water soluble fluorescent micelles with embedded perylene diimide fluorophores for potential biomedical applications: cell permeability, localization and cytotoxicity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 51:7-15. [PMID: 25842102 DOI: 10.1016/j.msec.2015.02.035] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 01/25/2015] [Accepted: 02/23/2015] [Indexed: 01/27/2023]
Abstract
Novel biocompatible water-soluble fluorescent micelles with embedded perylene diimides (PDI) for intracellular applications have been prepared by self assembling of amphiphilic poly(vinyl alcohol)-b-poly(acrylonitrile) (PVA-b-PAN) copolymers in the presence of synthesized fluorophores. Amphiphilic PVA-b-PAN copolymers were obtained by selective hydrolysis of well-defined poly(vinyl acetate)-b-poly(acrylonitrile) (PVAc-b-PAN) copolymer. The preparation of the novel fluorescence micelles consisting of PVA hydrophilic shell and PAN hydrophobic core with incorporated PDI fluorophores has been confirmed by DLS and TEM analysis. The cytotoxicity of the water-soluble fluorophores and their internalization into living cells depending on the micellar concentration have been tested. It was shown that they could successfully enter in living cells without destroying their morphology. The results obtained indicate that the novel water-soluble fluorescent micelles with embedded PDI fluorophores would be suitable for potential intracellular biomedical applications.
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25
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Basili S, Del Giacco T, Elisei F, Germani R. An acridinium-based sensor as a fluorescent photoinduced electron transfer probe for proton detection modulated by anionic micelles. Org Biomol Chem 2014; 12:6677-83. [DOI: 10.1039/c4ob00559g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Liang S, Liu Y, Xiang J, Qin M, Yu H, Yan G. Fabrication of a new fluorescent polymeric nanoparticle containing naphthalimide and investigation on its interaction with bovine serum albumin. Colloids Surf B Biointerfaces 2014; 116:206-10. [DOI: 10.1016/j.colsurfb.2014.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 12/05/2013] [Accepted: 01/05/2014] [Indexed: 11/29/2022]
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27
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Langdon-Jones EE, Symonds NO, Yates SE, Hayes AJ, Lloyd D, Williams R, Coles SJ, Horton PN, Pope SJ. Fluorescent Rhenium-Naphthalimide Conjugates as Cellular Imaging Agents. Inorg Chem 2014; 53:3788-97. [DOI: 10.1021/ic500142z] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Emily E. Langdon-Jones
- School
of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, U.K
| | - Nadine O. Symonds
- School
of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, U.K
| | - Sara E. Yates
- School
of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, U.K
| | - Anthony J. Hayes
- School
of Biosciences, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, U.K
| | - David Lloyd
- School
of Biosciences, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, U.K
| | - Rebecca Williams
- School
of Biosciences, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, U.K
| | - Simon J. Coles
- National
Crystallographic Service, Chemistry, Faculty of Natural and Environmental
Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, England, U.K
| | - Peter N. Horton
- National
Crystallographic Service, Chemistry, Faculty of Natural and Environmental
Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, England, U.K
| | - Simon J.A. Pope
- School
of Chemistry, Main Building, Cardiff University, Cardiff CF10 3AT, Cymru/Wales, U.K
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28
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Sinha S, Mukherjee T, Mathew J, Mukhopadhyay SK, Ghosh S. Green-emissive molecular marker with a TRIS-scaffold for fluorescence imaging of Zn2+ in biological systems. J Photochem Photobiol A Chem 2014. [DOI: 10.1016/j.jphotochem.2013.12.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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29
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Yu F, Wang Y, Zhu W, Huang Y, Yang M, Ai H, Lu Z. A novel fluorescent pH probe with valuable pKabased on a twisted intramolecular charge transfer mechanism, and its applications in cell imaging. RSC Adv 2014. [DOI: 10.1039/c4ra06834c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel TICT-mechanism based pH probe with valuable pKaof 5.32 has been developed. It is a promising visualizing agent for lysosomes in intracellular application.
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Affiliation(s)
- Fang Yu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu, PR China
| | - Yan Wang
- Key Laboratory of Magnetic Resonance and Atomic and Molecular Systems
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- Wuhan Centre for Magnetic Resonance
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Wencheng Zhu
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu, PR China
| | - Yan Huang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu, PR China
| | - Minghui Yang
- Key Laboratory of Magnetic Resonance and Atomic and Molecular Systems
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- Wuhan Centre for Magnetic Resonance
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
| | - Hua Ai
- National Engineering Research Center for Biomaterials
- Sichuan University
- Chengdu, PR China
| | - Zhiyun Lu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu, PR China
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30
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Xu JH, Hou YM, Ma QJ, Wu XF, Wei XJ. A highly selective fluorescent sensor for Fe3+ based on covalently immobilized derivative of naphthalimide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 112:116-124. [PMID: 23659959 DOI: 10.1016/j.saa.2013.04.044] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Revised: 04/05/2013] [Accepted: 04/10/2013] [Indexed: 06/02/2023]
Abstract
In this paper, the fabrication and analytical characteristics of fluorescence-based ferric ion-sensing glass slides were described. To fabricate the sensor, a naphthalimide derivative (compound 1) with a terminal double bond was synthesized and copolymerized with 2-hydroxyethyl methacrylate (HEMA) on the activated surface of glass slides by UV irradiation. Upon the addition of Fe(3+) in 0.05 mol/L Tris/HCl (pH 6.02) at 25 °C, the fluorescence intensity of the resulting optical sensor decrease, which has been utilized as the basis for the selective detection of Fe(3+). The sensor can be applied to the quantification of Fe(3+) with a linear range covering form 1.0×10(-5) to 1.0×10(-3) M and a detection limit of 4.5×10(-6) M. The experiment results show that the response behavior of the sensor to Fe(3+) is pH-independent in medium condition (pH 5.00-8.00) and exhibits high selectivity for Fe(3+) over a large number of cations such as alkali, alkaline earth and transitional metal ions. Moreover, satisfactory reproducibility, reversibility and a rapid response were realized. The sensing membrane was found to have a lifetime at least 2 months. The accuracy and the precision of the method were evaluated by the analysis of the standard reference material, iron in water (1.0 mol/L HNO3). The developed sensor is applied for the determination of iron in pharmaceutical preparation samples with satisfactory results.
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Affiliation(s)
- Jun-Hong Xu
- Department of Dynamical Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450011, PR China
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31
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The synthesis and fluorescence properties of novel 1,8-naphthalimide derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2013. [DOI: 10.1007/s11164-013-1261-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Georgiev NI, Bojinov VB, Venkova AI. Design, Synthesis and pH Sensing Properties of Novel PAMAM Light-Harvesting Dendrons Based on Rhodamine 6G and 1,8-naphthalimide. J Fluoresc 2013; 23:459-71. [DOI: 10.1007/s10895-013-1168-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Accepted: 01/31/2013] [Indexed: 10/27/2022]
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33
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Marinova NV, Georgiev NI, Bojinov VB. Facile synthesis, sensor activity and logic behaviour of 4-aryloxy substituted 1,8-naphthalimide. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.01.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Bag SS, Pradhan MK, Kundu R, Jana S. Highly solvatochromic fluorescent naphthalimides: Design, synthesis, photophysical properties and fluorescence switch-on sensing of ct-DNA. Bioorg Med Chem Lett 2013. [PMID: 23206865 DOI: 10.1016/j.bmcl.2012.11.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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35
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Saleh N, Graham J, Afaneh A, Al-Soud YA, Schreckenbach G, Esmadi FT. Pteridine-based fluorescent pH sensors designed for physiological applications. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2012.08.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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