1
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Bhakta V, Guchhait N. Switching of photoinduced proton transfer from one six-membered hydrogen-bonded ring to other: a molecule of hydrazine and pH sensor. Phys Chem Chem Phys 2024; 26:19290-19301. [PMID: 38963224 DOI: 10.1039/d4cp01998a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
The present study describes photophysical properties of 3-(benzo[d]oxazol-2-yl)-5-bromo-2-hydroxybenzaldehyde (HBOB) and (E)-2-(benzo[d]oxazol-2-yl)-4-bromo-6-(hydrazonomethyl)phenol (HBON) molecules with asymmetric two-way proton transfer sites. The purpose of this study is to know the direction of ESIPT out of the two-way proton transfer pathways in these molecules in both the solid and solution state. The steady state and time-resolved spectral behaviour of HBOB and HBON and a comparison of the spectral features with the two distinct control compounds 2-(benzo[d]oxazol-2-yl)-4-bromophenol (HBO) and (E)-4-bromo-2-(hydrazonomethyl)phenol (HBN) having single 6-membered hydrogen bonded network reveal that HBOB undergoes imine-amine photoisomerisation by proton transfer towards the oxazole side and HBON undergoes towards the hydrazone side with characteristic Stokes' shifted emission. Proton transfer forms with the red shifted emission of these molecules shows fast decay than the locally excited state. In the solid state, extremely high fluorescence intensity was observed, following a similar type of ESIPT pattern. Calculated ground (S0) and excited state (S1) energy barriers for the PT process obtained using density functional theory (DFT) and time-dependent density functional theory (TD-DFT) corroborate the unidirectional excited state intramolecular proton transfer (ESIPT) process for HBOB and HBON, and the theoretical spectral features validate our experimental absorption and emission spectra well. Interestingly, the unique unidirectional ESIPT behaviour of HBOB was utilised to detect hydrazine both in solution and solid phases. On the other hand, HBON was found to be a good fluorescence pH sensor with a ratiometric color change from yellow to green in acidic and basic media.
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Affiliation(s)
- Viki Bhakta
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata, 700009, India.
| | - Nikhil Guchhait
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata, 700009, India.
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2
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Kaur G, Rani R, Raina J, Singh I. Recent Advancements and Future Prospects in NBD-Based Fluorescent Chemosensors: Design Strategy, Sensing Mechanism, and Biological Applications. Crit Rev Anal Chem 2024:1-41. [PMID: 38593050 DOI: 10.1080/10408347.2024.2337869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
In recent years, the field of Supramolecular Chemistry has witnessed tremendous progress owing to the development of versatile optical sensors for the detection of harmful biological analytes. Nitrobenzoxadiazole (NBD) is one such scaffold that has been exploited as fluorescent probes for selective recognition of harmful analytes and their optical imaging in various cell lines including HeLa, PC3, A549, SMMC-7721, MDA-MB-231, HepG2, MFC-7, etc. The NBD-derived molecular probes are majorly synthesized from the chloro derivative of NBD via nucleophilic aromatic substitution. This general NBD moiety ligation method to nucleophiles has been leveraged to develop various derivatives for sensing analytes. NBD-derived probes are extensively used as optical sensors because of remarkable properties like excellent stability, large Stoke's shift, high efficiency and stability, visible excitation, easy use, low cost, and high quantum yield. This article reviewed NBD-based probes for the years 2017-2023 according to the sensing of analyte(s), including cations, anions, thiols, and small molecules like hydrogen sulfide. The sensing mechanism, designing of the probe, plausible binding mechanism, and biological application of chemosensors are summarized. The real-time application of optical sensors has been discussed by various methods, such as paper strips, molecular logic gates, smartphone detection, development of test kits, etc. This article will update the researchers with the in vivo and in vitro biological applicability of NBD-based molecular probes and challenges the research fraternity to design, propose, and develop better chemosensors in the future possessing commercial utility.
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Affiliation(s)
- Gurdeep Kaur
- School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, India
| | - Richa Rani
- Department of Chemistry, Panjab University, Chandigarh, India
| | - Jeevika Raina
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
| | - Iqubal Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, India
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3
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Jayapriya S, Ebenazer AF, Sampathkumar N, Rajesh J, Rajagopal G. Chromene Carbohydrazide- Schiff Base as a Highly Selective Turn-Off Fluorescence Chemosensor for In 3+ Ion and its Application. J Fluoresc 2024:10.1007/s10895-024-03655-3. [PMID: 38460096 DOI: 10.1007/s10895-024-03655-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 02/28/2024] [Indexed: 03/11/2024]
Abstract
A new 7-(diethylamino)-2-oxo-2 H-chromene-3-carbohydrazide design to synthesize a simple Schiff-base condition. The synthesized molecules' (probe L) photophysical properties were investigated in various solvent systems and solvent-poor-solvent assays. Probe L exhibits the absorbance band at 440 nm and the emission band at 488 nm in DMSO: H2O (7:3, v/v). Further, probe L shows selective turn-off emission recognition of In3+ ions in DMSO: H2O (7:3, pH = 7.4). By Job's plot and ESI mass analysis, probe L forms a 1:2 stoichiometry complex with an estimated association constant of 4.04 × 104 M- 2 with In3+ ions. Metal induces CHEQ (chelation-caused fluorescence quenching) to reduce the intensity of probe L's emission, and the estimated quenching constant was 4.52 × 104 M- 1. The limit of detection was found to be 5.93 nM; the time response of the sensor is instantaneous, and its reversible nature was confirmed using EDTA additions. Solid substrates (test strips) were designed and tested for fast, reliable, user-friendly, and real-time sensing of In3+ ions for on-site applications. The binding mechanism of probe L with In3+ ions was investigated using 1H NMR titration and DFT/TD-DFT studies.
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Affiliation(s)
- S Jayapriya
- Post-Graduate and Research Department of Chemistry, Chikkanna Government Arts College, Tiruppur, 641 602, Tamil Nadu, India
- Department of Chemistry, Sri Shakthi Institute of Engineering and Technology, Coimbatore, 641 062, Tamil Nadu, India
| | - A Franklin Ebenazer
- Post-Graduate and Research Department of Chemistry, Chikkanna Government Arts College, Tiruppur, 641 602, Tamil Nadu, India
| | - N Sampathkumar
- Post-Graduate and Research Department of Chemistry, Chikkanna Government Arts College, Tiruppur, 641 602, Tamil Nadu, India
| | - J Rajesh
- Department of Chemistry, Saveetha School of Engineering, Institute of Medical and Technical Science, Saveetha University, Chennai, 602 105, Tamil Nadu, India
| | - G Rajagopal
- Post-Graduate and Research Department of Chemistry, Government Arts College (Autonomous), Coimbatore, 641 018, Tamil Nadu, India.
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4
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Zhu S, Yang L, Zhao Y. Ethyl 3-aminobenzo[b]thiophene-2-carboxylate Derived Ratiometric Schiff Base Fluorescent Sensor for the Recognition of In 3+ and Pb 2. J Fluoresc 2024:10.1007/s10895-023-03576-7. [PMID: 38206512 DOI: 10.1007/s10895-023-03576-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024]
Abstract
An ethyl 3-aminobenzo[b]thiophene-2-carboxylate derived ratiometric Schiff base fluorescent sensor R was devised and synthesized. R exhibited a highly sensitive and selective ratiometric response to In3+ in DMF/H2O tris buffer solution. R exhibited a colorimetric/fluorescent dual-channel response to In3+. More importantly, R can distinguish In3+ from Ga3+ and Al3+ in less than 5 min. R exhibited a good linear correlation with the concentration of In3+ in the 5-25 μM range and the limit of detection for In3+ was found to be 8.36 × 10-9 M. According to the job`s plot and MS spectra, R formed a complex with In3+ at 1:2 with a complexation constant of 8.24 × 109 M2. Based on Gaussian theory calculations, the response mechanism of R to In3+ can be explained by photo-induced electron transfer (PET) and intramolecular charge transfer (ICT) mechanisms. In addition, R can be used for the detection of indium in tap water with satisfactory recoveries. Meanwhile, R displayed a linear relationship to micromolar concentrations (0-50 μM) of Pb2+ and recognized Pb2+ in a ratiometric response with a detection limit of 8.3 × 10-9 M.
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Affiliation(s)
- Shifeng Zhu
- College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Liangru Yang
- College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, China
| | - Yingying Zhao
- College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, China.
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5
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Khan J. Synthesis and Applications of Fluorescent Chemosensors: A Review. J Fluoresc 2023:10.1007/s10895-023-03455-1. [PMID: 37906359 DOI: 10.1007/s10895-023-03455-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 09/27/2023] [Indexed: 11/02/2023]
Abstract
Fluorescent sensors have emerged as powerful tools in analytical chemistry for the detection and quantification of heavy and transition metal ions in aqueous samples. These metal ions pollute the environment and cause a number of diseases, such as irritability, anaemia, muscle paralysis, neurological damage, and memory loss. Moreover, we explore the wide spectrum of applications in environmental monitoring, where these sensors enable precise detection of contaminants, as well as in biomedical fields, facilitating diagnostic and therapeutic advancements. While highlighting the exceptional progress achieved in this field, I also address the challenges and future prospects for the continued development of fluorescent sensors, emphasizing their potential to shape the future of water quality assessment and analytical chemistry. Heavy and transition metals are of great concern because of their extreme toxicity even at very low concentration and tendency to be accumulated in bodies of living organisms. During the recent years, the design and synthesis of fluorescent chemosensors for sensing environmentally and biologically relevant important metals, particularly for heavy and transition metals, is of great interest. Opon complexation with heavy and transition metals, the fluorescence intensity of these fluorescent chemosensors either quenched or enhanced. The current review paper explains various fluorescent chemosensors for determination of toxic heavy and transition metals in environmental water samples.
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Affiliation(s)
- Jehangir Khan
- Department of Chemistry, University of Malakand, Chakdara, Lower Dir, Pakistan, Khyber Pakhtunkhwa.
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6
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Frizon TEA, Salla CAM, Grillo F, Rodembusch FS, Câmara VS, Silva HC, Zapp E, Junca E, Galetto FZ, de Costa AM, Pedroso GJ, Chepluki AA, Saba S, Rafique J. ESIPT-based benzazole-pyromellitic diimide derivatives. A thermal, electrochemical, and photochemical investigation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 288:122050. [PMID: 36495682 DOI: 10.1016/j.saa.2022.122050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/14/2022] [Accepted: 10/24/2022] [Indexed: 06/17/2023]
Abstract
This study describes the synthesis of new pyromellitic diimide (PMDI) derivatives obtained in good yields from the reaction between pyromellitic dianhydride and aminobenzazoles reactive to proton-transfer in the excited state (ESIPT). In this investigation, a non-ESIPT PMDI was also prepared for comparison. These compounds presented absorption maxima in the ultraviolet region attributed to the allowed 1π-π* electronic transitions. Redshifted absorptions were observed for the ESIPT compounds (3b-3c) due to their π-extended conjugation if compared to the non-ESIPT dye (3a). The compounds presented fluorescence emissions between 300 and 600 nm, dependent on the solvent polarity and their chemical structures. While compound 3a presents a single emission, a dual fluorescence could be observed for compounds 3b-3c. As expected for ESIPT compounds, the emission at higher energies could be related to the excited enol conformer (E*), and the emission with a large Stokes shift was attributed to the keto tautomer (K*). All compounds presented fluorescence emission in the solid state, whereas the ESIPT derivatives presented redshifted emissions with a large Stokes shift, as expected. Cyclic voltammetry was employed to investigate the electrochemical properties of these compounds. The HOMO and LUMO energy levels were estimated at -5.40 to -5.00 eV and -2.84 to -2.62 eV, and good thermal stability (Td > 150 °C) was observed. Quantum chemical calculationsusingTD-DFT and DFT were performed to investigate the electronic and photophysical features of the molecules.
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Affiliation(s)
- Tiago E A Frizon
- Department of Energy and Sustainability, Federal University of Santa Catarina, Araranguá, SC, Brazil.
| | - Cristian A M Salla
- Physics Department, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Felipe Grillo
- Department of Materials and Metallurgy, Federal Institute of Espírito Santo, Vitória, ES, Brazil
| | - Fabiano S Rodembusch
- Institute of Chemistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Viktor S Câmara
- Institute of Chemistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Henrique C Silva
- Institute of Chemistry, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Eduardo Zapp
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | - Eduardo Junca
- University of the Extreme South of Santa Catarina (UNESC), Criciúma, SC, Brazil
| | - Fábio Z Galetto
- Department of Chemistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Angélica M de Costa
- Department of Energy and Sustainability, Federal University of Santa Catarina, Araranguá, SC, Brazil
| | - Gabriela J Pedroso
- Department of Energy and Sustainability, Federal University of Santa Catarina, Araranguá, SC, Brazil
| | - Antonio A Chepluki
- Department of Energy and Sustainability, Federal University of Santa Catarina, Araranguá, SC, Brazil
| | - Sumbal Saba
- Instituto de Química, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Jamal Rafique
- Instituto de Química, Universidade Federal de Goiás, Goiânia, GO, Brazil; Institute of Chemistry, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
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7
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Yang M, Lee JJ, Yun D, So H, Yi Y, Lim MH, Lee H, Kim KT, Kim C. In vitro and vivo application of a rhodanine-based fluorescence sensor for detection and bioimaging of In3+ at neutral pH. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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8
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Li Z, Zhao B, Kan W, Bu F, Qi X, Wang L, Song B, Ding L. An Acid-triggered Reactive and Enhanced Fluorescent Probe for Selective Detection of Al 3+/H + and its Application in Real Water Samples and Living Cells. J Fluoresc 2023; 33:91-101. [PMID: 36271307 DOI: 10.1007/s10895-022-03039-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 10/04/2022] [Indexed: 02/04/2023]
Abstract
A reactive fluorescent "turn-on" probe (di-PIP) with imine-linked dual phenanthro[9,10-d]imidazole luminophore have been conveniently prepared as an Al3+ and H+ dual functional receptor. di-PIP displayed high selectivity and sensitivity towards Al3+ ion in DMF/HEPES accompanied by fluorescence blue-shift and a good linear relationship as well as a low detection limit of 30.5 nmol·L-1, which can root from the synergetic functions of the decomposition reaction of di-PIP promoted by acidic Al3+ and the coordination effect between decomposition product and Al3+. Intriguingly, it was found that hydrogen ion H+ can be sufficient for simulating the fluorescence enhancing of di-PIP. 1H NMR titration and MS analyses for elucidation of the intermediate structure further revealed that the acid-triggered decomposition reaction resulted in the rapid, and sensitive sensing to Al3+ and H+. In addition, the probe di-PIP could be successfully applied to the detection of Al3+ in real water samples, and also utilized to visualize Al3+ and H+ in the living cells.
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Affiliation(s)
- Zhigang Li
- Chemistry and Chemical Engineering Institute, Qiqihar University, Qiqihar, Heilongjiang, 161006, China
| | - Bing Zhao
- Chemistry and Chemical Engineering Institute, Qiqihar University, Qiqihar, Heilongjiang, 161006, China. .,Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary, Qiqihar University, Qiqihar, Heilongjiang, 161006, China.
| | - Wei Kan
- Chemistry and Chemical Engineering Institute, Qiqihar University, Qiqihar, Heilongjiang, 161006, China. .,Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary, Qiqihar University, Qiqihar, Heilongjiang, 161006, China.
| | - Fanqiang Bu
- Chemistry and Chemical Engineering Institute, Qiqihar University, Qiqihar, Heilongjiang, 161006, China
| | - Xin Qi
- Chemistry and Chemical Engineering Institute, Qiqihar University, Qiqihar, Heilongjiang, 161006, China
| | - Liyan Wang
- Chemistry and Chemical Engineering Institute, Qiqihar University, Qiqihar, Heilongjiang, 161006, China.,Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary, Qiqihar University, Qiqihar, Heilongjiang, 161006, China
| | - Bo Song
- Chemistry and Chemical Engineering Institute, Qiqihar University, Qiqihar, Heilongjiang, 161006, China.,Heilongjiang Provincial Key Laboratory of Surface Active Agent and Auxiliary, Qiqihar University, Qiqihar, Heilongjiang, 161006, China
| | - Limin Ding
- Cadre Ward, First Hospital of Qiqihar City, Qiqihar, Heilongjiang, 161005, China
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9
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A dual-responsive bio-amicable fluorophore for trace level recognition of Zn2+ and Cd2+: Prefatory diagnosis of neoplastic disease from urine and ALS from saliva. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114133] [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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10
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Li S, Zeng Y, Tang C, Wang F, Gu B, Tang S. A red-emissive benzothiazole-based luminophore with ESIPT and AIE natures and its application for detecting and imaging hypochlorous acid. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 281:121601. [PMID: 35816864 DOI: 10.1016/j.saa.2022.121601] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
A new "ESIPT + AIE" based dye of benzothiazole with red emission and a large Stokes shift was constructed by combining 2-(2'-hydroxyphenyl)benzothiazole as the ESIPT unit and α-cyanostilbene as the AIE unit. The compound BACN was found to be a ideal HClO chemosensor, and presented palpable fluorescence and colorimetric responses toward HClO via the HClO-trigged oxidation cleavage of the ethylene bridge activated by the electron withdrawing cyano group. BACN was capable of recognizing HClO rapidly (12 s) and sensitively under physiological conditions, with good selectivity over other biologically pertinent substances. Thanks to strong red emission (λem = 606 nm) and large Stokes shift (213 nm) resulted from the combination of ESIPT and AIE effects, it was successfully utilized for the recognition of exogenous and endogenous HClO in living HeLa cells.
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Affiliation(s)
- Siyun Li
- Key Laboratory of Chemical Sensing and Catalysis, Hengyang Key Laboratory of New Detection Technology and Biological Agents of Animal Microorganism, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, PR China
| | - Ying Zeng
- Key Laboratory of Chemical Sensing and Catalysis, Hengyang Key Laboratory of New Detection Technology and Biological Agents of Animal Microorganism, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, PR China
| | - Can Tang
- Key Laboratory of Chemical Sensing and Catalysis, Hengyang Key Laboratory of New Detection Technology and Biological Agents of Animal Microorganism, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, PR China
| | - Feifei Wang
- Key Laboratory of Chemical Sensing and Catalysis, Hengyang Key Laboratory of New Detection Technology and Biological Agents of Animal Microorganism, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, PR China
| | - Biao Gu
- Key Laboratory of Chemical Sensing and Catalysis, Hengyang Key Laboratory of New Detection Technology and Biological Agents of Animal Microorganism, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, PR China.
| | - Siping Tang
- Key Laboratory of Chemical Sensing and Catalysis, Hengyang Key Laboratory of New Detection Technology and Biological Agents of Animal Microorganism, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, PR China.
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11
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Yang Q, Zhao S, Li H, Li F. Acidic pH and thiol-driven homogeneous cathodic electrochemiluminescence strategy for determining the residue of organophosphorus pesticide in Chinese cabbage. Food Chem 2022; 393:133349. [PMID: 35691064 DOI: 10.1016/j.foodchem.2022.133349] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 05/25/2022] [Accepted: 05/28/2022] [Indexed: 11/19/2022]
Abstract
Electrochemiluminescent (ECL) sensors for organophosphorus pesticides (OPs) have received considerable attention, whereas complicated electrode's immobilization, response to single hydrolysate and anodic emission correlated with ECL assays restrict their potential utilization. Herein, we developed a homogeneous dual-response cathodic ECL system for highly sensitive and reliable analysis of OP using CdTe QDs as emitters. CdTe QDs, emitting red light, were fabricated through a hydrothermal reaction and generated anodic and cathodic ECL emission upon stimulation of tripropyl amine and K2S2O8, respectively. Notably, CdTe QDs-K2S2O8 showed a simultaneous response to thiol and acidic pH, and were regarded as a ECL sensor for methidathion with limit of detection of 0.016 ng/mL based on hydrolysis of acetylthiocholine into thiocholine and CH3COOH by acetylcholinesterase (AChE) and OPs' inhibition on AChE activity. This sensor also exhibited good practicability to detect methidathion in Chinese cabbage. Overall, the sensor will supply more useful information for ensuring OPs-related food safety.
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Affiliation(s)
- Qiaoting Yang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Suixin Zhao
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Haiyin Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China.
| | - Feng Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China.
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12
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Zhang R, Lian L, Wang B, Zhu L, Ren Y, Shen J, Yu XQ, Hou JT. Observation of HOCl generation associated with diabetic cataract using a highly sensitive fluorescent probe. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 278:121385. [PMID: 35597158 DOI: 10.1016/j.saa.2022.121385] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Diagnosis of diabetic cataract (DC) in the early stage is of great significance for drug intervention and surgery circumvention for DC patients. However, the lack of reliable imaging tools greatly limits the diagnosis of early DC. In this context, a fluorescent probe BBPy for hypochlorous acid (HOCl) is presented based on the oxidation of phenothiazine. The probe displays apparent emission enhancement at 562 nm toward HOCl with high selectivity, superb sensitivity (detection limit: 12.6 nM), and rapid response (within seconds). Using the probe, the HOCl generation in diabetic human lens epithelial cells was monitored, as well as the HOCl down-regulation during antioxidant treatment. Therefore, it is proposed that HOCl can be a promising biomarker for DC and fluorescence imaging technique can be regarded as a candidate tool for DC diagnosis.
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Affiliation(s)
- Ruirui Zhang
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Lili Lian
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325035, China; Eye Hospital of Wenzhou Medical University, Wenzhou 325003, China
| | - Bingya Wang
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325035, China
| | - Lei Zhu
- Institute of Biomedical Materials Industry Technology, Hubei Engineering University, Xiaogan 432000, China
| | - Yueping Ren
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325035, China; Eye Hospital of Wenzhou Medical University, Wenzhou 325003, China.
| | - Jianliang Shen
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325035, China
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu 610064, China; Department of Chemistry, Xihua University, Chengdu 610039, China.
| | - Ji-Ting Hou
- Institute of Biomedical Materials Industry Technology, Hubei Engineering University, Xiaogan 432000, China; School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325035, China.
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13
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Bag R, Sikdar Y, Sahu S, Das Mukhopadhyay C, Drew MG, Goswami S. Benzimidazole based ESIPT active chemosensors enable nano–molar detection of Cu2+ in 90% aqueous solution, MCF–7 cells, and plants. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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14
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Mitochondria-targeted cyclometalated iridium (III) complex for H 2S-responsive intracellular redox regulation as potent photo-oxidation anticancer agent. J Biol Inorg Chem 2022; 27:641-651. [PMID: 36058946 DOI: 10.1007/s00775-022-01957-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 08/18/2022] [Indexed: 10/14/2022]
Abstract
Owing to the safety and low toxicity, photodynamic therapy (PDT) for cancer treatment has received extensive attention. However, the excess H2S in cancer cells reduces the PDT efficiency, because H2S indirectly depletes the reactive oxygen species (ROS). To improve anticancer efficiency, a mitochondria-targeted iridium(III) complex Ir-MMB has been developed as H2S consumer and photo-oxidation anticancer agent. On the one hand, complex Ir-MMB can consume H2S with sensitive phosphorescence turn-on, which has been successfully applied to exogenous and endogenous H2S response imaging in living cells. On the other hand, Ir-MMB can enhance its anticancer activity and cause photo-oxidation damage via catalyzing the oxidation of reduced form of nicotinamide-adenine dinucleotide (NADH) to NAD+ and producing H2O2 under light, and ultimately results in cell apoptosis through mitochondrial depolarization and ROS production.
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15
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Wang L, Wang Z, Chen Y, Huang Z, Huang X, Xue M, Cheng H, Li B, Liu P. A novel dual-channel fluorescent probe for selectively and sensitively imaging endogenous nitric oxide in living cells and zebrafish. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 277:121280. [PMID: 35472703 DOI: 10.1016/j.saa.2022.121280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/28/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
Nitric oxide (NO) plays various physiological and pathological roles in lots of biological processes. It is crucial to detect NO sensitively and selectively in vivo and in vitro as homeostasis of NO is closely related to various diseases. Herein, a novel dual-channel fluorescent dye (ENNH2) based on dicarboxyimide anthracene was developed as a highly sensitive and selective probe to detect NO in living systems using the dual-channel fluorescence. ENNH2 can emit bright red fluorescence due to the intramolecular charge transfer (ICT) from the amino group at the 6-position of 1,2-dicarboxyimide anthracene to the conjugated aromatic ring, and the ICT is effectively inhibited by the reductive deamination of the amino in the presence of NO to obtain the remarkable strong green emission with the excellent sensitivity (5.52 nM). Promisingly, ENNH2 exhibits an excellent performance in endogenous NO dual-channel fluorescence imaging of RAW 264.7 cells and zebrafish.
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Affiliation(s)
- Lin Wang
- Analytical and Testing Center, Jinan University, Guangzhou 510632, PR China
| | - Ziqian Wang
- School of Medicine, Southern University of Science and Technology, Shenzhen 518000, PR China
| | - Yuan Chen
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, PR China
| | - Ziqi Huang
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang, 524048 Guangdong, PR China
| | - Xianqi Huang
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang, 524048 Guangdong, PR China
| | - Mingyue Xue
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang, 524048 Guangdong, PR China
| | - Hanchao Cheng
- School of Medicine, Southern University of Science and Technology, Shenzhen 518000, PR China.
| | - Bowen Li
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, Zhejiang, PR China.
| | - Peilian Liu
- School of Chemistry and Chemical Engineering, Key Laboratory of Clean Energy Materials Chemistry of Guangdong Higher Education Institutes, Lingnan Normal University, Zhanjiang, 524048 Guangdong, PR China.
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16
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Peng B, Chen G, Li Y, Zhang H, Shen J, Hou JT, Li Z. NQO-1 Enzyme-Activated NIR Theranostic Agent for Pancreatic Cancer. Anal Chem 2022; 94:11159-11167. [PMID: 35916489 DOI: 10.1021/acs.analchem.2c01189] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Pancreatic cancer (PC) is one of the most lethal cancers worldwide, which is usually diagnosed in the advanced stage and is highly resistant to traditional chemotherapy, radiotherapy, and immunotherapy. Therefore, there is an urgent need for developing new PC-specific imaging and treatment. In this study, an quinone oxidoreductase 1 (NQO-1)-activated near-infrared (NIR) agent, ICy-Q, was synthesized. ICy-Q is almost nonemissive, while its NIR emission at 705 nm is triggered by NQO-1-induced reduction in the PC cells. In addition, the reduction product, ICy-OH, is specifically enriched in mitochondria and lysosomes and acts as an effective chemotherapeutic agent to selectively induce pancreatic cancer cell death via the cell pyroptosis pathway. Further studies have shown that ICy-Q is suitable for ex vivo imaging of clinical PC sections and solid tumors from patients. We expect this study will be helpful in the future for the design of targeted theranostic agents for PC.
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Affiliation(s)
- Bo Peng
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325035, China.,Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China
| | - Gang Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325005, China.,Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325005, China
| | - Yahui Li
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325035, China
| | - Hao Zhang
- Youjiang Medical University for Nationalities, Baise 533000, China
| | - Jianliang Shen
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325035, China.,Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325000, China.,Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou 325001, China
| | - Ji-Ting Hou
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325035, China
| | - Zhipeng Li
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou 325035, China
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Duan N, Yang S. Research Progress on Multifunctional Fluorescent Probes for Biological Imaging, Food and Environmental Detection. Crit Rev Anal Chem 2022; 54:775-817. [PMID: 35849642 DOI: 10.1080/10408347.2022.2098670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
There has been rapid progress in the development of fast, sensitive, cheap and low-cytotoxicity micro-molecule fluorescent probes for application in various fields, including disease diagnosis, food safety and environmental safety. As an analytical tool, dual-function fluorescent probes with dual-emission responses have attracted considerable attention due to their cost-effectiveness and efficiency over single-function sensors. This review primarily describes research progress on multifunctional probes in terms of the reaction type and coordination type, as well as the general design principles of probes. The analytes include reactive oxygen species (ROS), reactive sulfur species (RSS), harmful cations and anions, etc. Multifunctional probes for food, medical and environmental applications are listed for future research. To improve the development of rapid detection methods, trends and strategies in the development of multifunctional fluorescent probes are also discussed.
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Affiliation(s)
- Ning Duan
- Beijing Key laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing, PR China
| | - Shaoxiang Yang
- Beijing Key laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing, PR China
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18
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Liu X, Zhang H, Zhang Y, Wang Y. Elaborating the mechanism of a highly selective fluorescent ‘turn-on’ probe to detect the group IIIA ions: a detailed time-dependent density functional theory study. Theor Chem Acc 2022. [DOI: 10.1007/s00214-022-02892-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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19
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A Ratiometric Selective Fluorescent Probe Derived from Pyrene for Cu2+ Detection. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10060207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
A novel ratiometric Cu2+-selective probe was rationally constructed based on pyrene derivative. Compared to other tested metal ions, the probe presented the selective recognition for Cu2+ which could be detected by a significant turn-on fluorescent response at 393 nm and 415 nm. Under the optimized conditions, a detection limit of 0.16 μM Cu2+ in aqueous media was found. Besides this, a 1:1 metal–ligand complex was confirmed by MS spectra and Job’s plot experiment, and the binding mode was also studied by 1H NMR experiment. Meanwhile, the fluorescence imaging in living cells was performed to detect Cu2+ with satisfactory results.
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20
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A bifunctional fluorescent probe based on PET & ICT for simultaneously recognizing Cys and H 2S in living cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 230:112441. [PMID: 35397303 DOI: 10.1016/j.jphotobiol.2022.112441] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 03/14/2022] [Accepted: 03/30/2022] [Indexed: 12/16/2022]
Abstract
Most reported probes that respond to Cysteine (Cys) and Hydrogen sulfide (H2S) can only identify one analyte, or they were interfered with homocysteine (Hcy) and glutathione (GSH) when recognizing Cys and H2S. In addition, nitrobenzoxadiazole (NBD) ether, as one of thiols recognition sites, inevitably encounters the situation that Cys, GSH and H2S cannot be distinguished on the same channel at the cellular level. In this work, by introducing NBD ether and NBD amine, we constructed a bifunctional fluorescent probe NJB for dual-site response to Cys and H2S via PET & ICT processes. NJB has wonderful selectivity for identifying Cys and HS-, with limits of detection as low as 58.4 nM and 81.1 nM, respectively. Interestingly, NJB has been successfully applied to detect Cys and HS- in MCF-7 cells. Therefore, the probe that serves as a great tool for inquiring the physiological and pathological functions of Cys and H2S in living cells is promising.
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21
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Li H, Mu H, Xin C, Cai J, Yuan B, Jin G. Turning ON/OFF the fluorescence of the ESIPT state by changing the hydrogen bond distance and orientation in quinoline–pyrazole derivatives. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132146] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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22
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Xiang H, Wang T, Tang S, Wang Y, Xiao N. A novel hydrazone-based fluorescent "off-on-off" probe for relay sensing of Ga 3+ and PPi ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 267:120510. [PMID: 34689093 DOI: 10.1016/j.saa.2021.120510] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 10/08/2021] [Accepted: 10/12/2021] [Indexed: 06/13/2023]
Abstract
A novel hydrazone-based fluorescent probe (E)-3-((2-(benzo[d]thiazol-2-yl)hydrazono)methyl)-4H-chromen-4-one (BTC) has been rationally designed and synthesized. BTC can subsequently detect Ga3+ and PPi ions through the absorption and emission off-on-off response with high specificity. Importantly, fluorescent probe BTC can well discriminate Ga3+ from Al3+ and In3+. The association constant (K) was calculated as 2.06 × 104M-1, and the limit of detection (LOD) was calculated as 4.88 × 10-2μM. Competitive binding studies also illustrated good results of the probe BTC towards Ga3+. Job's plot and HRMS results substantiated the 1:1 stoichiometry between BTC and Ga3+ ion. The interaction binding mode of BTC with Ga3+ was proposed by HRMS, 1H NMR spectral titration, UV-vis absorption and fluorescence spectral measurements. The combination of the restraint of the photo-induced electron transfer (PET) process and the chelation enhanced fluorescence (CHEF) process is responsible for the fluorescence enhancement of this probe. The in situ chelated BTC-Ga3+ could further monitor pyrophosphate ion (PPi) by demetallization process with quenching fluorescence emission. Additionally, the BTC and BTC-Ga3+ showed good cell permeability and could detect Ga3+ and PPi ions in onioninner epidermal cells, respectively.
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Affiliation(s)
- Hanyue Xiang
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Tianran Wang
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Sixian Tang
- School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Yujie Wang
- School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Nao Xiao
- Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China.
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Yang L, Li M, Wang Y, Zhang Y, Liu Z, Ruan S, Wang Z, Wang S. An isocamphanyl-based fluorescent "turn-on" probe for highly sensitive and selective detection of Ga 3+ and application in vivo and in vitro. Analyst 2021; 146:7294-7305. [PMID: 34749386 DOI: 10.1039/d1an01368h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel fluorescent probe 2-(4-(diethylamino)-2-hydroxybenzylidene)-N-(2,3,3-trimethylbicyclo[2.2.1]heptan-2-yl)hydrazinecarbothioamide (HT) was prepared in this study by a condensation reaction. HT has been confirmed to possess high specificity toward Ga3+ over other metal ions (including Al3+ and In3+) via a distinct fluorescence light-up response. Moreover, HT exhibited good detection performances for Ga3+ including high selectivity, excellent anti-interference ability, a wide working pH range, and good reversibility. The association constant and limit of detection (LOD) were calculated to be 5.34 × 103 M-1 and 1.18 × 10-6 M, respectively. The detection mechanism of HT toward Ga3+ was proposed and confirmed by 1H NMR analysis, HRMS analysis, and DFT calculations. A simple test strip-based portable detecting device and a molecular INHIBIT logic circuit were established for improving its practical applicability. Furthermore, the desirable sensing performance of HT for Ga3+ was successfully reconfirmed in MCF-7 cells and zebrafish.
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Affiliation(s)
- Lijuan Yang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Mingxin Li
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Yunyun Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Yan Zhang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Zhipeng Liu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Shutang Ruan
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Zhonglong Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
| | - Shifa Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, China.
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24
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Interaction Study between ESIPT Fluorescent Lipophile-Based Benzazoles and BSA. Molecules 2021; 26:molecules26216728. [PMID: 34771137 PMCID: PMC8586955 DOI: 10.3390/molecules26216728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 10/30/2021] [Accepted: 11/04/2021] [Indexed: 12/02/2022] Open
Abstract
In this study, the interactions of ESIPT fluorescent lipophile-based benzazoles with bovine serum albumin (BSA) were studied and their binding affinity was evaluated. In phosphate-buffered saline (PBS) solution these compounds produce absorption maxima in the UV region and a main fluorescence emission with a large Stokes shift in the blue–green regions due to a proton transfer process in the excited state. The interactions of the benzazoles with BSA were studied using UV-Vis absorption and steady-state fluorescence spectroscopy. The observed spectral quenching of BSA indicates that these compounds could bind to BSA through a strong binding affinity afforded by a static quenching mechanism (Kq~1012 L·mol−1·s−1). The docking simulations indicate that compounds 13 and 16 bind closely to Trp134 in domain I, adopting similar binding poses and interactions. On the other hand, compounds 12, 14, 15, and 17 were bound between domains I and III and did not directly interact with Trp134.
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Xiu D, Shi J, Deng M, Song H, Hao Z, Feng Q, Yu H. A new fluorescent chemosensor for Al(III) detection with highly selective in aqueous solution and solid test paper. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130761] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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26
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Wang Y, Ding F, Sun X, Chen S, Huang H, Chen H. A reaction-based colorimetric and ratiometric chemosensor for imaging identification of HClO in live cells, mung bean sprouts, and paper strips. Talanta 2021; 234:122655. [PMID: 34364464 DOI: 10.1016/j.talanta.2021.122655] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/18/2021] [Accepted: 06/23/2021] [Indexed: 02/08/2023]
Abstract
Hypochlorous acid (HClO) as well as its ionic form (ClO-), representative of reactive oxygen species (ROS), are essential players in all sorts of biological processes. The abnormal level of each can lead to the onset of various diseases. Besides, Sodium hypochlorite, a commonly-used bleaching agent in our daily lives, could also result in breathing and skin problems when overexposed. Therefore, developing a molecular chemosensor for sensing HClO is of biological and environmental importance. Though many such chemosensors have been reported, new HClO chemosensors with different sensing performances may still come in handy in certain situations. In this work, we have developed a new coumarin-based chemosensor, CM-hbt, for realizing both ratiometric and colorimetric imaging detection of HClO in live cells. Notably, we further explored its application in sensing HClO in plant mung beans as well as fabricated an easy-to-use paper strip apparatus for facilitating its quick detection, which is seldomly seen in other HClO chemosensors. All the analysis results confirmed the high sensitivity and selectivity of this novel chemosensor. DFT calculations were used to decipher the underlying sensing mechanism of CM-hbt. Overall, this work presents a novel chemosensor, CM-hbt, as a colorimetric and ratiometric chemosensor for realizing imaging detection of HClO in a variety of different model systems, which highlights its broad spectrum of application potentials.
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Affiliation(s)
- Yanlei Wang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China
| | - Feng Ding
- Department of Microbiology & Immunology, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Xiaoshuai Sun
- School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Shijin Chen
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, Henan 471934, China
| | - Huarong Huang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong, 510006, China.
| | - Hong Chen
- Luoyang Key Laboratory of Organic Functional Molecules, College of Food and Drug, Luoyang Normal University, Luoyang, Henan 471934, China.
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