1
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Solvent controlled excited state intramolecular proton transfer (ESIPT) behavior and luminescent property of a novel phthalimide-based fluorophore: A TD-DFT Study. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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2
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Insight into the probe BTFMB responses to hydrogen peroxide switching on ESIPT reaction. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Deep-Red Emissive Fluorescent Probe for Sensitive Detection of Cysteine in Milk and Living Cells. FOOD ANAL METHOD 2022. [DOI: 10.1007/s12161-022-02280-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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4
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Zheng YL, Zhang HC, Tian DH, Duan DC, Dai F, Zhou B. Rational design of an ESIPT-based fluorescent probe for selectively monitoring glutathione in live cells and zebrafish. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 238:118429. [PMID: 32408228 DOI: 10.1016/j.saa.2020.118429] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/26/2020] [Accepted: 04/27/2020] [Indexed: 06/11/2023]
Abstract
Glutathione (GSH), an extremely important antioxidant, is a major participant in maintaining redox homeostasis and tightly associated with various clinical diseases. Thus, accurate and rapid detection of intracellular GSH is imperative to elucidate its role in physiological and pathological processes. Herein, by modifying 2-(2'-hydroxyphenyl) benzothiazole (HBT) scaffold, we developed an excited-state intramolecular proton transfer (ESIPT)-based fluorescent probe BTFMD for tracking GSH, which exhibited good selectivity, excellent water solubility, a large Stokes shift (181 nm) and fast response rate (within 10 min). Furthermore, the probe was successfully applied for imaging of endogenous GSH in live cells and zebrafish, and probing into the role of GSH in the development of cancer and Parkinson's disease.
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Affiliation(s)
- Ya-Long Zheng
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Han-Chen Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Di-Hua Tian
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - De-Chen Duan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China
| | - Fang Dai
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China.
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu 730000, China.
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5
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Benzothiazole applications as fluorescent probes for analyte detection. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-01998-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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6
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Sun X, Kong C, Zhang H. Sensing mechanism of a fluorescent probe for thiophenols: Invalidity of excited-state intramolecular proton transfer mechanism. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 231:118129. [PMID: 32058919 DOI: 10.1016/j.saa.2020.118129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/30/2019] [Accepted: 02/03/2020] [Indexed: 05/14/2023]
Abstract
Simple and effective detection of thiophenols has attracted great attention. A fluorescent probe 1 with high selectivity and sensitivity is designed and synthesized based on the excited-state intramolecular proton transfer (ESIPT) in experiment. However, we conclude that the ESIPT process fails to happen actually based on the calculation results. In the present work, the density functional theory (DFT) and time-dependent density functional theory (TD-DFT) methods are employed to investigate the real sensing mechanism. The calculated absorption and emission spectra agree well with the experimental results. By comparing the energy of enol and keto configurations and the constructed potential energy surfaces (PESs) in the ground (S0) and excited (S1) states of 3-(benzo[d]thiazol-2-yl)-10-butyl-10H-phenothiazin-2-ol (dye 2), the ESIPT process is confirmed impossible because of the relatively high keto form energy and potential energy barrier. Besides, the transition state of dye 2 is optimized to offer the accurate potential energy barrier. The results of calculated frontier molecular orbitals (FMOs) and spectra indicate that it is the photoinduced electron transfer (PET) process that results in the fluorescence quenching of probe 1. After adding thiophenols, the thiolysis of 2,4-dinitrophenyl ether bond is triggered and dye 2, which emits strong fluorescence because of the absence of PET process, is obtained. Consequently, our study has demonstrated that probe 1 can act as a fluorescent probe to detect thiophenols through the off-on fluorescence variation based on the PET mechanism but not the ESIPT process.
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Affiliation(s)
- Xiaofei Sun
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China
| | - Chuipeng Kong
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China.
| | - Hongxing Zhang
- Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, People's Republic of China.
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7
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Patil PDJ, Wagalgave SM, Ingle RD, Nanubolu JB, Bhosale RS, Bhosale SV, Pawar RP, Bhosale SV. Merocyanine‐Benzothiazole Chromophore‐Based Sensor for Selective Picric Acid Detection. ChemistrySelect 2019. [DOI: 10.1002/slct.201902722] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Pramod D. Jawale Patil
- Department of ChemistryDeogiri College Aurangabad- 431005, Maharashtra India
- Polymers and Functional Materials DivisionCSIR-Indian Institute of Chemical Technology Hyderabad- 500007, Telangana India
| | - Sopan M. Wagalgave
- Polymers and Functional Materials DivisionCSIR-Indian Institute of Chemical Technology Hyderabad- 500007, Telangana India
| | - Rajita D. Ingle
- Department of ChemistryDeogiri College Aurangabad- 431005, Maharashtra India
| | - Jagadeesh B. Nanubolu
- Centre for X-ray CrystallographyCSIR-Indian Institute of Chemical Technology Hyderabad- 500007, Telangana India
| | - Rajesh S. Bhosale
- Polymers and Functional Materials DivisionCSIR-Indian Institute of Chemical Technology Hyderabad- 500007, Telangana India
- Department of ChemistryIndrashil University, Kadi Mehsana- 382740, Gujarat India
| | - Sidhanath V. Bhosale
- Polymers and Functional Materials DivisionCSIR-Indian Institute of Chemical Technology Hyderabad- 500007, Telangana India
| | - Rajendra P. Pawar
- Department of ChemistryDeogiri College Aurangabad- 431005, Maharashtra India
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8
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Huang C, Qian Y. A highly sensitive two-photon fluorescent probe for glutathione with near-infrared emission at 719 nm and intracellular glutathione imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 217:68-76. [PMID: 30927573 DOI: 10.1016/j.saa.2019.03.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 02/22/2019] [Accepted: 03/17/2019] [Indexed: 06/09/2023]
Abstract
A near-infrared turn-on two-photon fluorescent probe ST-BODIPY for glutathione-specific detection was designed and synthesized by attaching triphenylamine to BODIPY skeleton through the Knoevenagel condensation to prolong the maximum emission wavelength to the NIR region. And 2,4-dinitrobenzenesulfonyl group (DNBS), as the fluorescence quencher and thiol recognition moiety, was modified in 8 position of BODIPY. In the presence of GSH, the probe afforded an "off-on" signal response with a significant NIR fluorescence enhancement centered at 719 nm accompanying by quantum yield increased to 0.44, which was ascribed to the glutathione-induced SNAr (aromatic substitution) reaction. Surprisingly, we found that the probe could discriminate GSH from other biothiols including Cys and Hcy upon the addition of intracellular concentrations of them. Time-dependence also demonstrated that the probe could distinguish GSH from Cys and Hcy under physiological environment. The limit of detection (LOD) for GSH was calculated as 25.46 nM from the titration experiments, which is lower than most previously reported GSH-selective probes. Under the Ti:sapphire pulsed laser's 800 nm irradiation, ST-BODIPY toward GSH generated an "off-on" signal response with a significant enhancement of fluorescence emission at 719 nm after treatment with GSH. Besides, the 2PA cross section value (σ2) was calculated to be 410 GM, suggesting that it could not only function well as an excellent two-photon fluorescent probe for the detection of intracellular GSH, but also be applied for two-photon imaging with high sensitivity in living cells. Moreover, ST-BODIPY probe has been successfully employed for monitoring exogenous and endogenous GSH in MCF-7 cells with satisfying results, perhaps it was feasible for detecting abnormal contents of GSH in a biological system and accomplishing the goal of maintaining normal human activities.
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Affiliation(s)
- Chunmei Huang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Ying Qian
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China.
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9
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Song X, Yang Y, Ru J, Wang Y, Qiu F, Feng Y, Zhang G, Liu W. Highly specific monitoring and imaging of endogenous and exogenous cysteine in living cells. Talanta 2019; 204:561-568. [PMID: 31357334 DOI: 10.1016/j.talanta.2019.06.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/31/2019] [Accepted: 06/06/2019] [Indexed: 11/25/2022]
Abstract
Cys is one of the important biothiols and its abnormal concentration may pose a threat to human health. Therefore, the monitoring of Cys in organisms is of great significance. GSH and Hcy, as the other two biothiols, have similar chemical structures and active sites to Cys. Consequently, developing fluorescent probes to independently detect Cys has become a challenging problem. Keeping this in mind, α-β unsaturated ketone as a recognition group was integrated into the coumarin group skeleton to synthesize a fluorescent probe SC. After the nucleophilic addition reaction of Cys with SC, the conjugated system of SC was blocked and the fluorescent enhanced obviously. SC was able to detect Cys specifically under the same excitation with a low detection limit (11.1 nM). SC showed a rapid respond to Cys (120 s) and good fluorescent stability over a wide pH range. In addition, it achieved extracorporeal circulation in the presence of H2O2 or NEM. In the end, SC could be applied to detecting endogenous and exogenous Cys under biological condition due to its slight cytotoxicity and good biocompatibility. This provided a powerful tool for studying the physiological function of Cys exclusively.
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Affiliation(s)
- Xuerui Song
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Yang Yang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Jiaxi Ru
- State Key Laboratory of Veterinary Etiological Biology and Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu Province, 730046, PR China
| | - Yingzhe Wang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Fangzhou Qiu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Yan Feng
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Guolin Zhang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China.
| | - Weisheng Liu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China.
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10
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A Green-emitting Fluorescent Probe Based on a Benzothiazole Derivative for Imaging Biothiols in Living Cells. Molecules 2019; 24:molecules24030411. [PMID: 30678112 PMCID: PMC6384771 DOI: 10.3390/molecules24030411] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/09/2019] [Accepted: 01/18/2019] [Indexed: 11/29/2022] Open
Abstract
A new green-emitting fluorescent probe 1 was developed for biothiol detection. The sensing mechanism was considered to be biothiol-induced cleavage of the 2,4-dinitrobenzene- sulfonate group in probe 1 and resulting inhibition of the probe’s photoinduced electron transfer (PET) process. Probe 1 exhibited favorable properties such as excellent selectivity, highly sensitive (0.12 µM), large Stokes shift (117 nm) and a remarkable turn-on fluorescence signal (148-fold). Furthermore, confocal fluorescence imaging indicated that probe 1 was membrane-permeable and suitable for visualization of biothiols in living A549 cells.
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11
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Hou P, Wang J, Fu S, Liu L, Chen S. Highly sensitive fluorescent probe based on a novel phenothiazine dye for detection of thiophenols in real water samples and living cells. Anal Bioanal Chem 2018; 411:935-942. [PMID: 30535528 DOI: 10.1007/s00216-018-1525-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 11/17/2018] [Accepted: 11/27/2018] [Indexed: 01/26/2023]
Abstract
Based on an excited-state intramolecular proton transfer (ESIPT) fluorophore, a novel fluorescent off-on probe for detection of thiophenols was designed and synthesized. This probe (λex = 401 nm, λem = 527 nm) displayed high specificity for sensing thiophenols over other biologically related species. Besides, this probe possessed capabilities of monitoring thiophenols with rapid response rate (3 min), a large Stokes shift (126 nm), and high sensitivity (2.7 nM). The sensing mechanism was considered to be that thiophenols triggered thiolysis of the probe and the ESIPT fluorophore was released, as confirmed by means of HPLC and HRMS. Most notably, this probe was successfully applied to monitor levels of thiophenols in realistic samples and MDA-MB-231 cells. Graphical abstract A novel phenothiazine-based fluorescent probe was developed for sensitively sensing thiophenols in both aqueous medium and living cells.
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Affiliation(s)
- Peng Hou
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, 161006, Heilongjiang, China
| | - Jing Wang
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, 161006, Heilongjiang, China
| | - Shuang Fu
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, 161006, Heilongjiang, China
| | - Lei Liu
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, 161006, Heilongjiang, China
| | - Song Chen
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, 161006, Heilongjiang, China.
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12
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Chen S, Hou P, Wang J, Fu S, Liu L. A rapid and selective fluorescent probe with a large Stokes shift for the detection of hydrogen sulfide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 203:258-262. [PMID: 29874636 DOI: 10.1016/j.saa.2018.05.108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 05/23/2018] [Accepted: 05/27/2018] [Indexed: 06/08/2023]
Abstract
We have successfully developed a new green-emitting H2S fluorescence probe employing a 2,4-dinitrophenyl ether moiety as the sensing group based on 3'-formyl-4'-hydroxybiphenyl-4-carbonitrile. This probe displayed a rapid (2 min), sensitive (the detection limit was 0.18 μM) and selective with a large Stokes shift (183 nm) in response to H2S, which was beneficial for fluorescence sensing and cell imaging studies. Moreover, this probe can qualitatively and quantitatively detect H2S with a good linearity (R2 = 0.9991). Importantly, this probe had been used for the detection of H2S in living MDA-MB-231 cells with good performance.
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Affiliation(s)
- Song Chen
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, Heilongjiang Province, 161006, PR China.
| | - Peng Hou
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, Heilongjiang Province, 161006, PR China
| | - Jing Wang
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, Heilongjiang Province, 161006, PR China
| | - Shuang Fu
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, Heilongjiang Province, 161006, PR China
| | - Lei Liu
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, Heilongjiang Province, 161006, PR China
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13
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Chen S, Hou P, Wang J, Fu S, Liu L. A simple but effective fluorescent probe with large stokes shift for specific detection of cysteine in living cells. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.05.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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14
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Shen Y, Zhang X, Zhang C, Zhang Y, Jin J, Li H. A simple fluorescent probe for the fast sequential detection of copper and biothiols based on a benzothiazole derivative. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:427-434. [PMID: 29073543 DOI: 10.1016/j.saa.2017.09.069] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/25/2017] [Accepted: 09/26/2017] [Indexed: 06/07/2023]
Abstract
A simple benzothiazole fluorescent chemosensor was developed for the fast sequential detection of Cu2+ and biothiols through modulating the excited-state intramolecular proton transfer (ESIPT) process. The compound 1 exhibits highly selective and sensitive fluorescence "on-off" recognition to Cu2+ with a 1:1 binding stoichiometry by ESIPT hinder. The in situ generated 1-Cu2+ complex can serve as an "on-off" fluorescent probe for high selectivity toward biothiols via Cu2+ displacement approach, which exerts ESIPT recovery. It is worth pointing out that the 1-Cu2+ complex shows faster for cysteins (within 1min) than other biothiols such as homocysteine (25min) and glutathione (25min). Moreover, the compound 1 displays 160nm Stoke-shift for reversibly monitoring Cu2+ and biothiols. In addition, the probe is successfully used for fluorescent cellular imaging. This strategy via modulation the ESIPT state has been used for determination of Cu2+ and Cys with satisfactory results, which further demonstrates its value of practical applications.
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Affiliation(s)
- Youming Shen
- Hunan Province Cooperative Innovation Center for The Construction & Development of Dongting Lake Ecological Economic Zone, College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde 415000, PR China; Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China; Key Laboratory of Preparation and Application of Environmentally Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, PR China
| | - Xiangyang Zhang
- Hunan Province Cooperative Innovation Center for The Construction & Development of Dongting Lake Ecological Economic Zone, College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde 415000, PR China.
| | - Chunxiang Zhang
- Hunan Province Cooperative Innovation Center for The Construction & Development of Dongting Lake Ecological Economic Zone, College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde 415000, PR China
| | - Youyu Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China.
| | - Junling Jin
- Hunan Province Cooperative Innovation Center for The Construction & Development of Dongting Lake Ecological Economic Zone, College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde 415000, PR China
| | - Haitao Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, PR China
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15
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Tong L, Qian Y. A NIR rhodamine fluorescent chemodosimeter specific for glutathione: Knoevenagel condensation, detection of intracellular glutathione and living cell imaging. J Mater Chem B 2018; 6:1791-1798. [DOI: 10.1039/c7tb03199h] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A new near-infrared probe for detecting glutathione based on conjugate addition and intramolecular amino induced spirolactam opening named RhAN was designed and synthesized. Its emission intensity enhance more than 90-fold upon addition of GSH. In addition, it also has high sensitivity with low detection limit of 0.1 μM.
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Affiliation(s)
- Lulu Tong
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- China
| | - Ying Qian
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- China
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16
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A highly selective and sensitive turn-on fluorescent probe for copper(II) ion with a large Stokes shift. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.10.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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17
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Chen S, Li H, Hou P. A large stokes shift fluorescent probe for sensing of thiophenols based on imidazo[1,5-α]pyridine in both aqueous medium and living cells. Anal Chim Acta 2017; 993:63-70. [PMID: 29078956 DOI: 10.1016/j.aca.2017.09.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/19/2017] [Accepted: 09/05/2017] [Indexed: 01/21/2023]
Abstract
An imidazo [1,5-α]pyridine-based fluorescent probe MIPY-DNP with a large Stokes shift (173 nm) for the sensing of thiophenols in aqueous medium has been developed. This probe with 2,4-dinitrophenyl ether as a highly thiophenol-selective group was constructed based on the combination of PET and ESIPT mechanisms. Upon the treatment with thiophenols, MIPY-DNP produced a remarkable fluorescence enhancement (209-fold) at 478 nm. The detect limit for thiophenols was calculated to be as low as 5.6 nM. Importantly, the practical utility of MIPY-DNP for the selective detection of thiophenols has been successfully demonstrated in both real water samples and living cells.
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Affiliation(s)
- Song Chen
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, Heilongjiang Province 161006, PR China
| | - Hongmei Li
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, Heilongjiang Province 161006, PR China
| | - Peng Hou
- College of Pharmacy, Qiqihar Medical University, 333 Bukui Street, Qiqihar, Heilongjiang Province 161006, PR China.
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18
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Chen S, Li H, Hou P. Imidazo[1,5-α]pyridine-derived fluorescent turn-on probe for cellular thiols imaging with a large Stokes shift. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.068] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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