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Jia X, Meng J, Liu Y. Theoretical Investigation on Proton Transfer Directionality and Dynamics Behavior of 3-(Benzo[ d]thiazol-2-yl)-2-hydroxy-5-methoxybenzaldehyde with Two Asymmetric Proton Acceptors. J Phys Chem A 2024; 128:8096-8104. [PMID: 39265968 DOI: 10.1021/acs.jpca.4c04647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2024]
Abstract
A detailed theoretical investigation on the excited state intramolecular proton transfer (ESIPT) directionality and dynamics behavior of 3-(benzo[d]thiazol-2-yl)-2-hydroxy-5-methoxybenzaldehyde (BTHMB) with two unsymmetric proton acceptors (N and O2) has been performed. The hydrogen bond O1-H···N in BTHMB-a formed by the O1-H group with the N atom or O1-H···O2 in BTHMB-b formed by the O1-H group with the O2 atom is enhanced upon photoexcitation, and the strength of the O1-H···N bond is stronger, which will drive the O1-H proton to the N atom. Potential energy curves further confirm that ESIPT occurs in the N atom because of the smaller energy barrier (0.39 kcal/mol). Results of dynamics simulations manifest that no surface hopping exists between the S0 and S1 states within 300 fs, and ESIPT time constants of BTHMB-a and BTHMB-b are 48 and 151 fs, respectively. While the reverse ESIPT is observed in BTHMB-b at 294 fs, implying that the O1-H proton is transferred to the N atom instead of the O2 atom. The consistency of the calculated absorption (390 nm) and fluorescence spectra (443 and 602 nm) of BTHMB-a with the experimental values (390, 410, and 605 nm) confirms this conclusion again. The charge distribution analysis shows that the charge on the proton acceptors increases, and the O2 atom has higher electronegativity because it has more negative charges. The minimum surface electrostatic potential on the N atom in BTHMB-b correlating with the pKb value is -47.38 kcal/mol, indicating that the N atom has strong basicity. Therefore, the basicity of the N atom dominates the ESIPT process rather than the electronegativity of the O2 atom.
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Affiliation(s)
- Xueli Jia
- Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications, School of Physics, Henan Normal University Xinxiang, Henan 453007, PR China
| | - Ju Meng
- Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications, School of Physics, Henan Normal University Xinxiang, Henan 453007, PR China
| | - Yufang Liu
- Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications, School of Physics, Henan Normal University Xinxiang, Henan 453007, PR China
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Chen P, Niu Z, Wang E. Bright ESIPT emission from 2,6-di(thiazol/oxazol/imidazol-2-yl)phenol derivatives in solution, aggregation and solid states. Methods Appl Fluoresc 2024; 12:035009. [PMID: 38838704 DOI: 10.1088/2050-6120/ad5490] [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: 02/05/2024] [Accepted: 06/05/2024] [Indexed: 06/07/2024]
Abstract
Most luminophores often suffer from the problem of aggregation-caused quenching (ACQ) or fluorescence disappearance in dilute solution. It is significant to bridge the gap between ACQ and AIE. In this work, a facile but effective strategy was proposed for the fabrication of always-on luminophores based on the excited state intramolecular proton transfer (ESIPT) mechanism, and six luminophores emitting bright fluorescence in solution, aggregation and solid states were synthesized from 5-tert-butyl-2-hydroxyisophthalaldehyde. All these ESIPT systems show only keto emission owing to their congested structures which block the breakage of intramolecular hydrogen bond (O-H⋯N) by solvation, and subsequently make enol emission impossible. Three of these luminophores are prone to convert into the corresponding phenolate anions emitting blue-shifted emission, which enable them to sense pH variation in the weakly basic range. Furthermore, white-light emission was achieved by combining two of them which show complementary-color fluorescence, and one of them was utilized for bioimaging of living Hela cells and the high-resolution image was obtained.
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Affiliation(s)
- Panpan Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou, 571158, People's Republic of China
| | - Zhigang Niu
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou, 571158, People's Republic of China
| | - Eenju Wang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry & Chemical Engineering, Hainan Normal University, Haikou, 571158, People's Republic of China
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Wu Z, Dou J, Nguyen KU, Eppley JC, Siwawannapong K, Zhang Y, Lindsey JS. Tailoring the AIE Chromogen 2-(2-Hydroxyphenyl)benzothiazole for Use in Enzyme-Triggered Molecular Brachytherapy. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248682. [PMID: 36557815 PMCID: PMC9786593 DOI: 10.3390/molecules27248682] [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: 10/31/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022]
Abstract
A targeted strategy for treating cancer is antibody-directed enzyme prodrug therapy, where the enzyme attached to the antibody causes conversion of an inactive small-molecule prodrug into an active drug. A limitation may be the diffusion of the active drug away from the antibody target site. A related strategy with radiotherapeutics entails enzymatically promoted conversion of a soluble to insoluble radiotherapeutic agent, thereby immobilizing the latter at the target site. Such a molecular brachytherapy has been scarcely investigated. In distinct research, the advent of molecular designs for aggregation-induced emission (AIE) suggests translational use in molecular brachytherapy. Here, several 2-(2-hydroxyphenyl)benzothiazole substrates that readily aggregate in aqueous solution (and afford AIE) were elaborated in this regard. In particular, (1) the 2-(2-hydroxyphenyl) unit was derivatized to bear a pegylated phosphodiester that imparts water solubility yet undergoes enzymatic cleavage, and (2) a p-phenol unit was attached to the benzo moiety to provide a reactive site for final-step iodination (here examined with natural abundance iodide). The pegylated phosphodiester-iodinated benzothiazole undergoes conversion from aqueous-soluble to aqueous-insoluble upon treatment with a phosphatase or phosphodiesterase. The aggregation is essential to molecular brachytherapy, whereas the induced emission of AIE is not essential but provides a convenient basis for research development. Altogether, 21 compounds were synthesized (18 new, 3 known via new routes). Taken together, blending biomedical strategies of enzyme prodrug therapy with materials chemistry concerning substances that undergo AIE may comprise a step forward on the long road toward molecular brachytherapy.
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Zhuang H, Shi W, Zhao G, Yang Y, Li Y. Unveiling the sensing mechanism and luminescence property of a new ESIPT-based fluorescent sensor for detecting Zn 2. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 282:121650. [PMID: 35926285 DOI: 10.1016/j.saa.2022.121650] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/14/2022] [Accepted: 07/16/2022] [Indexed: 06/15/2023]
Abstract
Recently, based on the mechanism of excited-state intramolecular proton transfer (ESIPT), a new fluorescent probe named 3-(benzo[d]thiazol-2-yl)-5-bromosalicylaldehyde-4N-phenyl thiosemicarbazone (BTT) was successfully synthesized [Analyst 146 (2021) 4348-4356.]. However, the importance of ESIPT processes of BTT probe and the mechanism of detecting Zn2+ ions have not been studied in detail. In this study, the photochemical behavior of ESIPT-chromophore and the photophysical changes of detecting Zn2+ ions were explained at the molecular level for the first time. The calculated spectral values were in agreement with the experiment. We not only confirmed the excited state hydrogen-bond strengthening by interaction region indicator (IRI), but also scanned the potential energy curves of BTT molecule in different electronic states, which confirmed that the hydrogen proton is easier to transfer in the first excited state. In addition, we had given the reasonable structure of the BTT-Zn2+ complex (L1) by comparing the binding free energies. The hole-electron distribution and interfragment charge transfer (IFCT) methods proved the excitation type of intraligand charge transfer (ILCT). Finally, the photophysical phenomenon of BTT for detecting Zn2+ ions is explained by calculating the electronic spectra and the energy gap (Egap) between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO).
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Affiliation(s)
- Hongbin Zhuang
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Wei Shi
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Guijie Zhao
- School of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Yunfan Yang
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Yongqing Li
- School of Physics, Liaoning University, Shenyang 110036, P. R. China.
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Shang C, Cao Y, Sun C, Li Y. Unveiling the influence of atomic electronegativity on the double ESIPT processes of uralenol: A theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 268:120660. [PMID: 34857463 DOI: 10.1016/j.saa.2021.120660] [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: 10/11/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
In this work, the effects of atomic electronegativity (O, S, and Se atoms) on the competitive double excited-state intramolecular proton transfer (ESIPT) reactions and photophysical characteristics of uralenol (URA) were systematically explored by using the density functional theory (DFT) and time-dependent DFT (TD-DFT) methods. The calculated hydrogen bond parameters, infrared (IR) vibrational spectra, reduced density gradient (RDG) scatter plots, interaction region indicator (IRI) isosurface and topology parameters have confirmed the six-membered intramolecular hydrogen bond (IHB) O4H5…O3 is the stronger one in all the three studied compounds. Subsequently, frontier molecular orbitals (FMOs) and natural bond orbital (NBO) population analysis essentially uncover that the electron redistribution has induced the ESIPT process. Besides, the constructed potential energy curves (PECs) have indicated that the ESIPT process prefers to occur along the O4H5…O3 rather than the O1H2…O3 and the proton-transfer energy barrier is gradually decreased with the weakening of atomic electronegativity from URA to URA-S and URA-Se. In a conclusion, the attenuating of atomic electronegativity has enhanced the IHBs of URA and thereby promoting the ESIPT reaction, which is helpful for further developing novel fluorophores based on ESIPT behavior in the future.
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Affiliation(s)
- Changjiao Shang
- College of Science, Northeast Forestry University, Harbin 150040, Heilongjiang, China
| | - Yunjian Cao
- College of Science, Northeast Forestry University, Harbin 150040, Heilongjiang, China
| | - Chaofan Sun
- College of Science, Northeast Forestry University, Harbin 150040, Heilongjiang, China.
| | - Yuanzuo Li
- College of Science, Northeast Forestry University, Harbin 150040, Heilongjiang, China.
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Theoretical Investigation on the ESIPT Process and Detection Mechanism for Dual-Proton Type Fluorescent Probe. Int J Mol Sci 2022; 23:ijms23042132. [PMID: 35216247 PMCID: PMC8876953 DOI: 10.3390/ijms23042132] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/07/2022] [Accepted: 02/10/2022] [Indexed: 02/06/2023] Open
Abstract
Recently, a new fluorescent probe AE-Phoswas reported to detect the activity of alkaline phosphatases (ALP) in different living cell lines. Here, we present an in-depth computational analysis of the mechanism and source of the fluorescence of the AE-Phos probe. There is an intermediate product (AE-OH-Phos) in the experiment as well as a different configuration of products that may emit fluorescence. It is essential to investigate the origin of fluorescence and the detection mechanism of the probe, which could help us eliminate the interference of other substances (including an intermediate product and possible isomers) on fluorescence during the experiment. According to the change of geometric parameters and Infrared spectra, we deduce that the dual intramolecular hydrogen bonds of salicylaldehyde azine (SA) were enhanced at the excited state, while AE-OH-Phos was attenuated. Considering the complex ESIPT behavior of the dual proton-type probe, the potential energy surfaces were further discussed. It can be concluded that the single proton transfer structure of SA (SA-SPT) is the most stable form. Both the concerted double proton transfer process and stepwise single proton transfer process of SA were forbidden. The fluorescence for SA was 438 nm, while that of SA-SPT was 521 nm, which agrees with the experimentally measured fluorescence wavelength (536 nm). The conclusion that single proton transfer occurs in SA is once again verified. In addition, the distribution of electron-hole and relative index was analyzed to investigate the intrinsic mechanism for the fluorescence quenching of the probe and the intermediate product. The identification of the origin of fluorescence sheds light on the design and use of dual-proton type fluorescent probes in the future.
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Ding G, Lu Y, Qin X, Su J, Li H, Liu X, Gao F. Strengthened near-IR two-photon absorption induced emission of ESIPT chromophores by molecular aggregation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Luo X, Shi W, Yang Y, Song Y, Li Y. Systematic theoretical investigation of two novel molecules BtyC-1 and BtyC-2 based on ESIPT mechanism. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 258:119810. [PMID: 33930853 DOI: 10.1016/j.saa.2021.119810] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/02/2021] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
Inexperiment, Song et al. have successfully synthesizedtwo novel molecules BtyC-1 and BtyC-2 and observedasingle and dual fluorescence peaks in these two molecules respectively. (Song et al. Tetrahedron Lett. 2019, 60, 1696-1701) However, they still lack a detailed and reasonable theoretical explanation. Then we wonder why these two similar structures behave so much differently? In this work, we focus on explaining the photochemical and photophysical properties of BtyC-1 and BtyC-2 by studying the excited state intramolecular proton transfer (ESIPT) mechanisms. Based on the optimized geometric configurations, the calculated infrared spectra indicate the intramolecular hydrogen bonding interactions are heightened in their excited states. The frontier molecular orbitals reflect the charge redistribution in photoinduced process, which explains that the driving force of ESIPT process is provided by enhanced hydrogen bonding interactions. In the meantime, the calculations of potential energy curves vividly explain the principle of the experimental dual fluorescence phenomenon. The analysis of Mulliken charges deepens the discussion of molecular structures on the potential energy barriers. Calculated absorption spectra via using density functional theory and emission spectra via using time-dependent density functional theory are consistent with the experimental data, which confirms the correctness of our calculation methods. The reduced density gradient isosurfaces help us distinguish the complex non-covalent bonds. Base on the above analyses, we conclude that there is no stable structure for BtyC-1 in excited state, which make it occur the ESIPT reaction spontaneously. BtyC-2 exists a stable normal structure in excited state. Its dual fluorescence signals are emitted by its normal and isomer structures, respectively.
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Affiliation(s)
- Xiao Luo
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Wei Shi
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Yunfan Yang
- Key Laboratory for Microstructural Material Physics of Hebei Province School of Science, Yanshan University, Qinhuangdao 066004, PR China
| | - Yuzhi Song
- Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, PR China.
| | - Yongqing Li
- School of Physics, Liaoning University, Shenyang 110036, PR China; Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, PR China.
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Liu X, Wang Y, Wang Y, Tao Y, Fei X, Tian J, Hou Y. Solvent effect on the excited-state intramolecular double proton transfer of 1,3-bis(2-pyridylimino)-4,7-dihydroxyisoindole. Photochem Photobiol Sci 2021; 20:1183-1194. [PMID: 34463933 DOI: 10.1007/s43630-021-00091-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 08/16/2021] [Indexed: 01/03/2023]
Abstract
Density functional theory (DFT) and time-dependent density functional theory (TDDFT) are used to study the solvatochromic effect and the excited-state intramolecular double proton transfer (ESIDPT) of 1,3-Bis(2-pyridylimino)-4,7-dihydroxyisoindole (BPI-OH) in different kinds of solvents. The hydrogen bonding parameters and IR spectra reveal that in the excited state, the strength of excited hydrogen bond increase with the decrease of solvent polarity. Furthermore, the reduction density gradient (RDG) analysis confirms the corresponding conclusion. Frontier molecular orbitals (FMOs) are analyzed, illuminating that the smaller the polarity of solvent, the smaller the energy gap between the HOMO and LUMO. The structures of BPI-OH (N) (normal), BPI-OH (T1) (single), and BPI-OH (T2) (double) were optimized. Previous reports found the double protons in BPI-OH molecule are transferred step-by-step process BPI-OH(N)→BPI-OH(T1)→BPI-OH(T2) in the ground state (S0) and the first excited singlet state (S1). Here, the potential energy curves of O1-H2 and O4-H5 in the S0 and S1 states were scanned in four kinds of solvents, respectively. It was found that in S1 state, BPI-OH(N)→BPI-OH(T1) was more prone to proton transfer than BPI-OH(T1)→BPI-OH(T2). In addition, by comparing the reaction energy barriers of the four kinds of solvents, it can be found that ESIPT is difficult to occur with the increase of solvent polarity. Meanwhile, it was also studied that MeOH as an explicit solvent was more likely to promote the ESIPT process than other implicit solvents.
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Affiliation(s)
- Xiumin Liu
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, People's Republic of China
| | - Yi Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, People's Republic of China.
| | - Yuxi Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, People's Republic of China
| | - Yaping Tao
- College of Physics and Electronic Information, Luoyang Normal University, Luoyang, 471022, People's Republic of China
| | - Xu Fei
- Lab Analyst of Network Information Center, Dalian Polytechnic University, Dalian, 116034, People's Republic of China
| | - Jing Tian
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, People's Republic of China
| | - Yingmin Hou
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, People's Republic of China.
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Vaz PAAM, Rocha J, Silva AMS, Guieu S. Benzimidazole-Based N,O Boron Complexes as Deep Blue Solid-State Fluorophores. MATERIALS 2021; 14:ma14154298. [PMID: 34361489 PMCID: PMC8348718 DOI: 10.3390/ma14154298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/26/2021] [Accepted: 07/29/2021] [Indexed: 02/01/2023]
Abstract
Benzimidazole-based boranils were designed and synthesized in order to assess the influence of halogen substituents on their optoelectronic properties. All compounds are photoluminescent in solution and solid state. Compared to the free ligands, the new boranils emit at a lower wavelength, by elimination of the excited-state intramolecular proton transfer observed with the ligands. In the solid state, some of the boranils exhibit a deep blue emission, presenting Commission Internationale de l’Éclairage (CIE) coordinates with an x-component of less than 0.16 and a y-component smaller than 0.04, highly desired values for the development of blue emitting materials.
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Affiliation(s)
- Patrícia A. A. M. Vaz
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (P.A.A.M.V.); (A.M.S.S.)
- CICECO, Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - João Rocha
- CICECO, Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
| | - Artur M. S. Silva
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (P.A.A.M.V.); (A.M.S.S.)
| | - Samuel Guieu
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal; (P.A.A.M.V.); (A.M.S.S.)
- CICECO, Aveiro Institute of Materials, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal;
- Correspondence:
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Luminescent excited-state intramolecular proton-transfer dyes based on 4-functionalized 6,6'-dimethyl-3,3'-dihydroxy-2,2'-bipyridine (BP(OH)2-Rs); DFT simulation study. J Mol Graph Model 2021; 107:107948. [PMID: 34082341 DOI: 10.1016/j.jmgm.2021.107948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 05/04/2021] [Accepted: 05/20/2021] [Indexed: 01/28/2023]
Abstract
The 4-functionalized 6,6'-dimethyl-3,3'-dihydroxy-2,2'-bipyridine dyes (BP(OH)2-Rs) have exhibited dienol and diketo emissions. The optimum geometrical structures for ground, singlet and triplet excited states are computed by DFT/B3LYP/6-31++G that showed the planarity of BP(OH)2-Rs structure. The emission spectra of the molecules are determined in the gas-phase at singlet and triplet excited states using CIS/6-31++G. The theoretical calculations are carried out for BP(OH)2-Rs to understand the impact of different substituents (R = -H (I), -Br (II), -TMS (III), -C2H (IV), -terpyridine (V) and -bodipy (diazaboraindacene) (VI)) on excited-state intramolecular proton transfer (ESIPT) in singlet and triplet excited states. Based on the calculations, the concerted diproton transfer proceeds in the triplet excited state, in which nπ* state has a significant participation in ESIPT. The spectral variation at ESIPT emission of BP(OH)2-Rs is influenced by the electron-acceptor ability of the substituents. The compound V revealed a higher spectral intensity compared to the others. From the comparison with the experimental data, the molecule V is almost planar agreed with the X-ray structure and trend variation of wavelengths. The molecule VI contains bodipy chromophore that excitation energy transfers completely from BP(OH)2 core to a bodipy substituent, leading to emission from the lowest-lying bodipy substituent, and consequently, ESIPT does not occur for this dye.
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13
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Luo X, Shi W, Yang Y, Li Y. Fluorescence probes detecting O2•_ based on intramolecular charge transfer and excited-state intramolecular proton transfer mechanisms. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114886] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Theoretical insights into ESIPT mechanism of the two protons system BH-BA in dichloromethane solution. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114145] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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15
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Ma J, Zhang Y, Zhang H, He X. Near infrared absorption/emission perylenebisimide fluorophores with geometry relaxation-induced large Stokes shift. RSC Adv 2020; 10:35840-35847. [PMID: 35517115 PMCID: PMC9056887 DOI: 10.1039/d0ra07050e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 09/21/2020] [Indexed: 11/21/2022] Open
Abstract
The dyes (P-1 and P-2) of perylenebisimide (PBI) conjugated with 2-(2-hydroxyphenyl)benzothiazole (HBT) were prepared by Sonogashira coupling reaction. The new compounds have special photophysical properties, such as near infrared absorption/emission and large Stokes shift. The UV-vis absorption (range from 651 nm to 690 nm) and emission wavelength (range from 732 nm to 756 nm) of P-1 and P-2 extend to near infrared range. Importantly, they have much larger Stokes shifts (range from 73 nm to 105 nm) compared with the conventional PBI derivatives, such as 7 (from 19 nm to 65 nm) and 9 (from 81 nm to 86 nm). TD-DFT calculation was used to rationalize UV-vis absorption, emission and especially large Stokes shift from the theoretical point of view. We found geometry relaxation of P-1 and P-2 in the excited state is an important reason for the origin of large Stokes shift besides intramolecular electron transfer (ICT). The dyes with near infrared absorption/emission and large stokes shifts induced by geometry relaxation were prepared.![]()
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Affiliation(s)
- Jie Ma
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 P. R. China
| | - Yizhi Zhang
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 P. R. China
| | - Hongbo Zhang
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 P. R. China
| | - Xifeng He
- Heilongjiang Provincial Key Laboratory of Catalytic Synthesis for Fine Chemicals, College of Chemistry and Chemical Engineering, Qiqihar University Qiqihar 161006 P. R. China
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Jia PP, Jiang ST, Xu L. Small-molecule Bifunctional Fluorescent Probes for the Differential Detection of Multiple Guests. Curr Org Synth 2020; 16:485-497. [PMID: 31984927 DOI: 10.2174/1570179416666190419213812] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 03/01/2019] [Accepted: 03/02/2019] [Indexed: 12/13/2022]
Abstract
During the last few years, the preparation of bifunctional fluorescent probes, which exhibit differential response towards multiple analytes, has attracted considerable attention since they are cost-effective and highly desirable for real-time applications. This review focuses on the recent advances in the design principles, recognition mechanisms, and applications of multifunctional fluorescent probes for the differential detection of multiple guests.
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Affiliation(s)
- Pei-Pei Jia
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China
| | - Shu-Ting Jiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China
| | - Lin Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China
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18
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Sarkar A, Pyne DK, Biswas T, Das R, Kar GK, Halder A. Tunable luminescence of a synthesized furophenanthraquinone derivative: interactions with different solvents. LUMINESCENCE 2020; 35:709-720. [PMID: 32000298 DOI: 10.1002/bio.3776] [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: 07/16/2019] [Revised: 11/21/2019] [Accepted: 01/02/2020] [Indexed: 11/07/2022]
Abstract
The synthesis is described of a luminescent furophenanthraquinone derivative, 9-methoxyphenanthro[4,3-b]furan-4,5-dione (MPFD). The biological importance of tetracyclic furophenanthraquinones was considered and the tunable luminescence of MPFD in different solvents was studied to explore the nature of the specific interactions between MPFD and solvents. Observation of dual emission bands and identical nature of the fluorescence excitation spectra of MPFD monitored at the emission wavelength in polar solvents indicated the formation of two different types of species in the excited state, probably due to proton transfer from the solvent to MPFD. Luminescence intensity due to anionic species was found to be increased and the corresponding peak was red shifted with increase in the proton-donating ability of the solvents, acting as an acid with respect to MPFD. Availability of more acidic protons in the solvent facilitated this phenomenon occurring in the excited state. MPFD also interacted with halogen-containing solvents by forming electron donor-acceptor charge transfer (CT) complexes. This CT complex formation was dependent on the number of chlorine atoms; the position of the corresponding luminescence band varied with the polarity of the solvent. Extent of the CT increased with increase in the number of chlorine atoms in the dichloro, trichloro and tetrachloro solvents, whereas the luminescence peak due to the CT complex was found to be blue shifted with decrease in solvent polarity. Interaction of the synthesized bioactive MPFD with different solvents deserves biological importance as proton transfer and CT play pivotal roles in biology.
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Affiliation(s)
- Aparna Sarkar
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, India
| | - Dinesh Kumar Pyne
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, India
| | - Tuyan Biswas
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, India
| | - Rumpa Das
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, India
| | - Gandhi K Kar
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, India
| | - Arnab Halder
- Department of Chemistry, Presidency University, 86/1 College Street, Kolkata, India
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19
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Yadav SB, Sonvane SS, Sekar N. Novel blue-green emitting NLOphoric triphenylamine-imidazole based donor-π-acceptor compound: Solvatochromism, DFT, TD-DFT and non-linear optical studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 224:117421. [PMID: 31377685 DOI: 10.1016/j.saa.2019.117421] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 07/23/2019] [Accepted: 07/24/2019] [Indexed: 06/10/2023]
Abstract
Novel Donor (D)-π-Acceptor (A) NLOphoric triphenylamine-imidazole based dye 9 was designed, synthesized, and confirmed by Mass, 13C NMR, and 1H NMR analysis. Photophysical properties of 9 were studied in solvents of different polarities and compared with analogues compounds 7 and 8. Phenonthroline acceptor based dye 9 shows highly bathochromic shifted absorption and emission compared to dyes 7 and 8. Positive solvatochromism was noticed in 7, 8, and 9 which was supported by the linear (i.e. Lippert-Mataga and Mac-Rae polarity functions) and multi-linear (i.e. Kamlet-Taft and Catalan parameters) analysis. Moreover, solvent polarizability (dSP) and solvent dipolarity (CSdP) are the major factors responsible for red shift in absorption as well as in emission spectra. Charge transfer descriptors as well as the polarity graphs are in good relation with Generalized Mulliken-Hush (GMH) parameters. NLO properties of 7, 8, and 9 were studied by using solvatochromic and computational methods. The static first hyperpolarizability (β0) and relevant microscopic parameters (μ,α0,α,β,γ) were determined using DFT with B3LYP, BHHLYP, and CAM-B3LYP functionals. Third-order NLO properties of nitrogen containing phenanthroline based compound 9 were observed to be several times higher than those of the compounds 7 and 8, justify the design approach.
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Affiliation(s)
- Sagar B Yadav
- Dyestuff Technology Department, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai 400019, Maharashtra, India
| | - Sumeet S Sonvane
- Dyestuff Technology Department, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai 400019, Maharashtra, India
| | - Nagaiyan Sekar
- Dyestuff Technology Department, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai 400019, Maharashtra, India.
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20
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Aradhyula BPR, Ranga Naidu Chinta RV, Dhanunjayarao K, Venkatasubbaiah K. Synthesis and characterization of poly(tetraphenylimidazole)s and their application in the detection of fluoride ions. RSC Adv 2020; 10:13149-13154. [PMID: 35492134 PMCID: PMC9051455 DOI: 10.1039/d0ra01559h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 03/24/2020] [Indexed: 11/21/2022] Open
Abstract
Here, we describe the synthesis and characterization of a silyl protected tetraphenylimidazole monomer and its homo and co-polymer. The requisite monomer was accessed by Suzuki–Miyaura cross-coupling of 2-(1-(4-bromophenyl)-4,5-diphenyl-1H-imidazol-2-yl)phenol and 4-vinylphenylboronic acid followed by protection of the phenolic group by tert-butyl(chloro)diphenylsilane. The desired polymers were readily synthesized by using free radical polymerization. Both the polymers and monomer were characterized using different analytical techniques including multinuclear NMR, GPC (for polymers), and single crystal X-ray crystallography (for the monomer). By utilizing the greater fluorophilicity of the silyl atom, the polymers were studied as probes for the detection of fluoride ions. The selectivity and sensitivity of the synthesized polymers were investigated in detail. We describe the synthesis and characterization of a silyl protected tetraphenylimidazole monomer and its polymers. The polymers were studied as probes for the detection of fluoride ions. Both the probes showed high selectivity and sensitivity over other ions tested.![]()
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Affiliation(s)
- Basava Punna Rao Aradhyula
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- HBNI
- Bhubaneswar-752050
- India
| | - Ramu V. Ranga Naidu Chinta
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- HBNI
- Bhubaneswar-752050
- India
| | - Kunchala Dhanunjayarao
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- HBNI
- Bhubaneswar-752050
- India
| | - Krishnan Venkatasubbaiah
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- HBNI
- Bhubaneswar-752050
- India
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21
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Yangyang Y, Chen Z, Rizhao P, Shiwei Z, Shengtao Y, Yao T, Weilong Z, Liyue W, Weiping Z, Yufang X, Xuhong Q. A ratiometric fluorescent probe for alkaline phosphatase with high sensitivity. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.04.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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22
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Zhang Y, Wu Z, Takashima I, Nguyen KU, Matsumoto N, Lindsey JS. Engineering of an archaeal phosphodiesterase to trigger aggregation-induced emission (AIE) of synthetic substrates. NEW J CHEM 2020. [DOI: 10.1039/d0nj03208e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aggregation-induced emission (AIE) probes that can be triggered by enzymatic activity are valuable for applications across the life sciences.
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Affiliation(s)
- Yunlong Zhang
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
| | - Zhiyuan Wu
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
| | - Ippei Takashima
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
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23
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Xie P, Zhu Y, Huang X, Gao G, Wei F, Guo F, Jiang S, Wang C. A novel probe based on rhodamine 101 spirolactam and 2-(2'-hydroxy-5'-methylphenyl)benzothiazole moieties for three-in-one detection of paramagnetic Cu 2+, Co 2+ and Ni 2. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 222:117171. [PMID: 31174148 DOI: 10.1016/j.saa.2019.117171] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 05/11/2019] [Accepted: 05/26/2019] [Indexed: 05/19/2023]
Abstract
A novel probe based on rhodamine 101 spirolactam and 2-(2'-hydroxy-5'-methylphenyl)benzothiazole moieties (probe 1) was developed as a three-in-one platform for detection of paramagnetic Cu2+, Co2+ and Ni2+ through different processes. Ratiometric changes in emission intensities at 565 nm and 460 nm for 1 (λex = 350 nm) were observed in presence of Co2+, Cu2+ and Ni2+ respectively. This probe displayed ratiometric colorimetric responses and 'turn-on' fluorescence responses (λex = 540 nm) toward Cu2+ and Co2+. Whereas probe 1 exhibited very weak absorption around 480 nm, no 'turn-on' emission (λex = 540 nm) in presence of Ni2+. The detection limits were 0.11 μM and 0.17 μM for Cu2+ and Co2+ ions respectively from ratiometric colorimetric measurements and 26 nM, 54 nM and 101 nM for Cu2+, Co2+ and Ni2+ respectively from ratiometric fluorometric measurements. The excited-state intramolecular proton transfer (ESIPT)-prohibited coupled ring-open process for 1-Cu2+ (1-Co2+) and ESIPT-prohibited irreversible process for 1-Ni2+ were proposed according to the spectral results. Furthermore, probe 1 was utilized to determine Cu2+ and Co2+ in real-life samples with good recoveries.
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Affiliation(s)
- Puhui Xie
- College of Sciences, Henan Agricultural University, Zhengzhou 450002, PR China.
| | - Yanru Zhu
- College of Sciences, Henan Agricultural University, Zhengzhou 450002, PR China
| | - Xuewei Huang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Guangqin Gao
- College of Sciences, Henan Agricultural University, Zhengzhou 450002, PR China
| | - Fengli Wei
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China
| | - Fengqi Guo
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Song Jiang
- College of Sciences, Henan Agricultural University, Zhengzhou 450002, PR China.
| | - Caixia Wang
- College of Sciences, Henan Agricultural University, Zhengzhou 450002, PR China
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24
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ESIPT-rhodol derivatives with enhanced Stokes shift: Synthesis, photophysical properties, viscosity sensitivity and DFT studies. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111626] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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25
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Dahal D, Pokhrel S, McDonald L, Bertman K, Paruchuri S, Konopka M, Pang Y. NIR-Emitting Hemicyanines with Large Stokes’ Shifts for Live Cell Imaging: from Lysosome to Mitochondria Selectivity by Substituent Effect. ACS APPLIED BIO MATERIALS 2019; 2:4037-4043. [DOI: 10.1021/acsabm.9b00564] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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26
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Ren Y, Fan D, Ying H, Li X. Rational design of the benzothiazole-based fluorescent scaffold for tunable emission. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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27
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Li X, Ma H, Qian J, Cao T, Teng Z, Iqbal K, Qin W, Guo H. Ratiometric fluorescent probe based on ESIPT for the highly selective detection of cysteine in living cells. Talanta 2019; 194:717-722. [DOI: 10.1016/j.talanta.2018.10.095] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 10/23/2018] [Accepted: 10/28/2018] [Indexed: 11/26/2022]
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28
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Concurrent ground and excited state proton transfer of (E)-2-((napthalen-2-ylimino)-methyl)phenol: Modulation in micellar media. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.11.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Gupta M, Sahana S, Sharma V, Bharadwaj PK. Benzothiazole integrated into a cryptand for ESIPT-based selective chemosensor for Zn2+ ions. Dalton Trans 2019; 48:7801-7808. [DOI: 10.1039/c9dt00548j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A novel 2(2′-hydroxyphenyl) benzothiazole-based cryptand (L) exhibits high fluorescence intensity in the presence of Zn2+ ions by stopping the excited state intramolecular proton transfer (ESIPT) process with a detection limit of 0.20 μM.
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Affiliation(s)
- Mayank Gupta
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Sunanda Sahana
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
| | - Vivekanand Sharma
- Department of Chemistry
- Indian Institute of Technology Kanpur
- Kanpur 208016
- India
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30
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Mohan M, Satyanarayan MN, Trivedi DR. Photophysics of proton transfer in hydrazides: a combined theoretical and experimental analysis towards OLED device application. NEW J CHEM 2019. [DOI: 10.1039/c9nj01503e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Effect of conjugation to support ESIPT with impossible double proton transfer in structurally favored species.
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Affiliation(s)
- Makesh Mohan
- Optoelectronics Laboratory
- Department of Physics
- National Institute of Technology Karnataka (NITK) Surathkal
- Mangalore – 575025
- India
| | - M. N. Satyanarayan
- Optoelectronics Laboratory
- Department of Physics
- National Institute of Technology Karnataka (NITK) Surathkal
- Mangalore – 575025
- India
| | - Darshak R. Trivedi
- Supramolecular Chemistry Laboratory
- Department of Chemistry
- National Institute of Technology Karnataka (NITK) Surathkal
- Mangalore – 575025
- India
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31
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Durgannavar T, Kwon SJ, Ghisaidoobe ABT, Rho K, Kim JH, Yoon S, Kang HJ, Chung SJ. Label‐Free Detection of Protein Tyrosine Phosphatase 1B (PTP1B) by Using a Rationally Designed Förster Resonance Energy Transfer (FRET) Probe. Chembiochem 2018; 19:2495-2501. [DOI: 10.1002/cbic.201800529] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Indexed: 01/10/2023]
Affiliation(s)
| | - Se Jeong Kwon
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
| | | | - Kyungmin Rho
- Department of ChemistryDongguk University Seoul 100–715 Republic of Korea
| | - Ju Hwan Kim
- Department of ChemistryDongguk University Seoul 100–715 Republic of Korea
| | - Sun‐Young Yoon
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
| | - Hyo Jin Kang
- Department of ChemistryDongguk University Seoul 100–715 Republic of Korea
| | - Sang J. Chung
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
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32
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Lari M, Martínez-Alonso M, Busto N, Manzano BR, Rodríguez AM, Acuña MI, Domínguez F, Albasanz JL, Leal JM, Espino G, García B. Strong Influence of Ancillary Ligands Containing Benzothiazole or Benzimidazole Rings on Cytotoxicity and Photoactivation of Ru(II) Arene Complexes. Inorg Chem 2018; 57:14322-14336. [DOI: 10.1021/acs.inorgchem.8b02299] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Matteo Lari
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Marta Martínez-Alonso
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Natalia Busto
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | | | | | - M. Isabel Acuña
- CIMUS, Universidad de Santiago de Compostela, Avenida Barcelona s/n, 15782 Santiago de Compostela, Spain
| | - Fernando Domínguez
- CIMUS, Universidad de Santiago de Compostela, Avenida Barcelona s/n, 15782 Santiago de Compostela, Spain
| | | | - José M. Leal
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Gustavo Espino
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
| | - Begoña García
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001 Burgos, Spain
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33
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Suganya S, Naha S, Velmathi S. A Critical Review on Colorimetric and Fluorescent Probes for the Sensing of Analytes via Relay Recognition from the year 2012-17. ChemistrySelect 2018. [DOI: 10.1002/slct.201801222] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Sivalingam Suganya
- Department of Chemistry; National Institute of Technology, Trichy, Tanjore, Thuvakudi, Trichy; Tamilnadu India Pin- 620015
| | - Sanay Naha
- Department of Chemistry; National Institute of Technology, Trichy, Tanjore, Thuvakudi, Trichy; Tamilnadu India Pin- 620015
| | - Sivan Velmathi
- Department of Chemistry; National Institute of Technology, Trichy, Tanjore, Thuvakudi, Trichy; Tamilnadu India Pin- 620015
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34
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Casey GR, Stains CI. Interrogating Protein Phosphatases with Chemical Activity Probes. Chemistry 2018; 24:7810-7824. [PMID: 29338103 PMCID: PMC5986605 DOI: 10.1002/chem.201705194] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Indexed: 12/30/2022]
Abstract
Protein phosphatases, while long overlooked, have recently become appreciated as drivers of both normal- and disease-associated signaling events. As a result, the spotlight is now turning torwards this enzyme family and efforts geared towards the development of modern chemical tools for studying these enzymes are well underway. This Minireview focuses on the evolution of chemical activity probes, both optical and covalent, for the study of protein phosphatases. Small-molecule probes, global monitoring of phosphatase activity through the use of covalent modifiers, and targeted fluorescence-based activity probes are discussed. We conclude with an overview of open questions in the field and highlight the potential impact of chemical tools for studying protein phosphatases.
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Affiliation(s)
- Garrett R Casey
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Cliff I Stains
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
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35
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Wang Q, Niu Y, Wang R, Wu H, Zhang Y. Acid-Induced Shift of Intramolecular Hydrogen Bonding Responsible for Excited-State Intramolecular Proton Transfer. Chem Asian J 2018; 13:1735-1743. [PMID: 29671954 DOI: 10.1002/asia.201800457] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/18/2018] [Indexed: 11/10/2022]
Abstract
The significant progress recently achieved in designing smart acid-responsive materials based on intramolecular charge transfer inspired us to utilize excited-state intramolecular proton transfer (ESIPT) for developing a turn-on acid-responsive fluorescent system with an exceedingly large Stokes shift. Two ESIPT-active fluorophores, 2-(2-hydroxyphenyl)pyridine (HPP) and 2-(2-hydroxyphenyl)benzothiazole (HBT), were fused into a novel dye (HBT-HPP) fluorescent only in the protonated state. Moreover, we also synthesized three structurally relevant control compounds to compare their steady-state fluorescence spectra and optimized geometric structures in neutral and acidic media. The results suggest that the fluorescence turn-on was caused by the acid-induced shift of the ESIPT-responsible intramolecular hydrogen bond from the HPP to HBT moiety. This work presents a systematic comparison of the emission efficiencies and basicity of HBT and HPP for the first time, thereby utilizing their differences to construct an acid-responsive smart organic fluorescent material. As a practical application, red fluorescent letters can be written using the acid as an ink on polymer film.
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Affiliation(s)
- Qin Wang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China
| | - Yahui Niu
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China
| | - Rong Wang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China
| | - Haoran Wu
- Innovation Experimental College, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China
| | - Yanrong Zhang
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, 712100, P. R. China
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36
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Sanz García J, Maschietto F, Campetella M, Ciofini I. Using Density Based Indexes and Wave Function Methods for the Description of Excited States: Excited State Proton Transfer Reactions as a Test Case. J Phys Chem A 2018; 122:375-382. [DOI: 10.1021/acs.jpca.7b10033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Juan Sanz García
- Chimie ParisTech, PSL Research
University, CNRS, Institut de Recherche de Chimie Paris, F-75005 Paris, France
| | - Federica Maschietto
- Chimie ParisTech, PSL Research
University, CNRS, Institut de Recherche de Chimie Paris, F-75005 Paris, France
| | - Marco Campetella
- Chimie ParisTech, PSL Research
University, CNRS, Institut de Recherche de Chimie Paris, F-75005 Paris, France
| | - Ilaria Ciofini
- Chimie ParisTech, PSL Research
University, CNRS, Institut de Recherche de Chimie Paris, F-75005 Paris, France
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37
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Sedgwick AC, Wu L, Han HH, Bull SD, He XP, James TD, Sessler JL, Tang BZ, Tian H, Yoon J. Excited-state intramolecular proton-transfer (ESIPT) based fluorescence sensors and imaging agents. Chem Soc Rev 2018; 47:8842-8880. [DOI: 10.1039/c8cs00185e] [Citation(s) in RCA: 690] [Impact Index Per Article: 115.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We review recent advances in the design and application of excited-state intramolecular proton-transfer (ESIPT) based fluorescent probes. These sensors and imaging agents (probes) are important in biology, physiology, pharmacology, and environmental science.
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Affiliation(s)
- Adam C. Sedgwick
- Department of Chemistry
- University of Bath
- Bath
- UK
- Department of Chemistry
| | - Luling Wu
- Department of Chemistry
- University of Bath
- Bath
- UK
| | - Hai-Hao Han
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | | | - Xiao-Peng He
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Tony D. James
- Department of Chemistry
- University of Bath
- Bath
- UK
- Department of Materials and Life Sciences
| | | | - Ben Zhong Tang
- Department of Chemistry
- The Hong Kong University of Science & Technology (HKUST)
- Clear Water Bay
- Kowloon
- China
| | - He Tian
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Juyoung Yoon
- Department of Chemistry and Nano Science
- Ewha Womans University
- Seoul 120-750
- Korea
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38
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Emandi G, Flanagan KJ, Senge MO. Fluorescent imidazole-based chemosensors for the reversible detection of cyanide and mercury ions. Photochem Photobiol Sci 2018; 17:1450-1461. [DOI: 10.1039/c8pp00226f] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Imidazole-based conjugate acts as a reversible sensor towards CN− and Hg2+ in CH3CN–H2O.
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Affiliation(s)
- Ganapathi Emandi
- SFI Tetrapyrrole Laboratory
- School of Chemistry
- Trinity Biomedical Sciences Institute
- 152-160 Pearse Street
- Trinity College Dublin
| | - Keith J. Flanagan
- SFI Tetrapyrrole Laboratory
- School of Chemistry
- Trinity Biomedical Sciences Institute
- 152-160 Pearse Street
- Trinity College Dublin
| | - Mathias O. Senge
- SFI Tetrapyrrole Laboratory
- School of Chemistry
- Trinity Biomedical Sciences Institute
- 152-160 Pearse Street
- Trinity College Dublin
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39
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Ding G, Lu Y, Su J, Qin X, Luo Z, Gao F, Chen L, Li H. Two intensified fluorescence colors' switching achieved by branched dye nanoaggregates. NANOSCALE 2017; 9:11158-11169. [PMID: 28749494 DOI: 10.1039/c7nr02169k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, a variety of branched target dyes containing double internal proton transfer segments were synthesized. For comparison, some linear analogs including a single internal proton transfer part were synthesized. The corresponding reference molecules lacking proton transfer segments were also prepared. The properties and aggregation modes of these dye aggregates were investigated on the basis of scanning electron microscopy images, transmission electron microscopy images, dynamic light scattering, X-ray diffraction, UV/visible absorption spectra and fluorescence emission spectra. The results showed that molecular aggregates with the morphologies of nano-scaled rounded or cubic particles of the target branched dyes could be yielded in mixed organic solvent/H2O solution. A remarkable emission enhancement and fluorescence switching process (from bright yellow to luminous pure blue) under 365 nm lamp irradiation was observed for these target branched dye nanoaggregates. However, no aggregates of the reference branched dyes free of hydroxyl groups were formed and no obvious spectral variations were found. In contrast, all the studied linear dyes yielded molecular nanoaggregates in mixed organic solvent/H2O solution, and only intensified single normal blue fluorescence emission was presented. This study provided real examples of some branched organic dye aggregates which were capable of displaying naked-eye enhanced fluorescence color switching under an UV lamp.
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Affiliation(s)
- Ge Ding
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China.
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40
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Wei X, Wu Q, Zhang J, Zhang Y, Guo W, Chen M, Gu Q, Cai Z, Lu M. Synthesis of precipitating chromogenic/fluorogenic β-glucosidase/β-galactosidase substrates by a new method and their application in the visual detection of foodborne pathogenic bacteria. Chem Commun (Camb) 2017; 53:103-106. [PMID: 27878149 DOI: 10.1039/c6cc07522c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We developed a new efficient method for the synthesis of important indoxyl glycoside substrates for β-glucosidase and β-galactosidase by using 1-acetylindol-3-ones as intermediates. This method was used to synthesise novel precipitating fluorogenic substrates for β-glucosidase based on 2-(benzothiazol-2'-yl)-phenols. We also assessed the application of these substrates in the detection of foodborne pathogenic bacteria.
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Affiliation(s)
- Xianhu Wei
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China and Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangzhou 510070, China. and University of Chinese Academy of Sciences, Beijing 100039, China
| | - Qingping Wu
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangzhou 510070, China.
| | - Jumei Zhang
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangzhou 510070, China.
| | - Youxiong Zhang
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou 510650, China and Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangzhou 510070, China. and University of Chinese Academy of Sciences, Beijing 100039, China
| | - Weipeng Guo
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangzhou 510070, China.
| | - Moutong Chen
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangzhou 510070, China.
| | - Qihui Gu
- Guangdong Institute of Microbiology, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangzhou 510070, China. and School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, China
| | - Zhihe Cai
- Guangdong Huankai Microbial Sci. & Tech. Co., Ltd, Guangzhou 510663, China
| | - Mianfei Lu
- Guangdong Huankai Microbial Sci. & Tech. Co., Ltd, Guangzhou 510663, China
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41
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Chen L, Ye JW, Wang HP, Pan M, Yin SY, Wei ZW, Zhang LY, Wu K, Fan YN, Su CY. Ultrafast water sensing and thermal imaging by a metal-organic framework with switchable luminescence. Nat Commun 2017; 8:15985. [PMID: 28665406 PMCID: PMC5497063 DOI: 10.1038/ncomms15985] [Citation(s) in RCA: 275] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Accepted: 05/18/2017] [Indexed: 12/24/2022] Open
Abstract
A convenient, fast and selective water analysis method is highly desirable in industrial and detection processes. Here a robust microporous Zn-MOF (metal-organic framework, Zn(hpi2cf)(DMF)(H2O)) is assembled from a dual-emissive H2hpi2cf (5-(2-(5-fluoro-2-hydroxyphenyl)-4,5-bis(4-fluorophenyl)-1H-imidazol-1-yl)isophthalic acid) ligand that exhibits characteristic excited state intramolecular proton transfer (ESIPT). This Zn-MOF contains amphipathic micropores (<3 Å) and undergoes extremely facile single-crystal-to-single-crystal transformation driven by reversible removal/uptake of coordinating water molecules simply stimulated by dry gas blowing or gentle heating at 70 °C, manifesting an excellent example of dynamic reversible coordination behaviour. The interconversion between the hydrated and dehydrated phases can turn the ligand ESIPT process on or off, resulting in sensitive two-colour photoluminescence switching over cycles. Therefore, this Zn-MOF represents an excellent PL water-sensing material, showing a fast (on the order of seconds) and highly selective response to water on a molecular level. Furthermore, paper or in situ grown ZnO-based sensing films have been fabricated and applied in humidity sensing (RH<1%), detection of traces of water (<0.05% v/v) in various organic solvents, thermal imaging and as a thermometer.
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Affiliation(s)
- Ling Chen
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Jia-Wen Ye
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Hai-Ping Wang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Mei Pan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Shao-Yun Yin
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Zhang-Wen Wei
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Lu-Yin Zhang
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Kai Wu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Ya-Nan Fan
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| | - Cheng-Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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42
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Zhou Q, Du C, Yang L, Zhao M, Dai Y, Song P. Mechanism for the Excited-State Multiple Proton Transfer Process of Dihydroxyanthraquinone Chromophores. J Phys Chem A 2017; 121:4645-4651. [DOI: 10.1021/acs.jpca.7b04051] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qiao Zhou
- College
of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Can Du
- College
of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Li Yang
- College
of Physics, Liaoning University, Shenyang 110036, P. R. China
| | - Meiyu Zhao
- School
of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, P. R. China
| | - Yumei Dai
- Normal
College, Shenyang University, Shenyang 110044, P. R. China
| | - Peng Song
- College
of Physics, Liaoning University, Shenyang 110036, P. R. China
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43
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Heyer E, Benelhadj K, Budzák S, Jacquemin D, Massue J, Ulrich G. On the Fine-Tuning of the Excited-State Intramolecular Proton Transfer (ESIPT) Process in 2-(2′-Hydroxybenzofuran)benzazole (HBBX) Dyes. Chemistry 2017; 23:7324-7336. [DOI: 10.1002/chem.201700299] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Indexed: 02/02/2023]
Affiliation(s)
- Elodie Heyer
- Institut de Chimie et Procédés pour l'Energie; l'Environnement et la Santé (ICPEES); groupe Chimie Organique pour les Matériaux; la Biologie et l'Optique (COMBO); UMR CNRS 7515; Ecole Européenne de Chimie, Polymères et Matériaux (ECPM); 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Karima Benelhadj
- Institut de Chimie et Procédés pour l'Energie; l'Environnement et la Santé (ICPEES); groupe Chimie Organique pour les Matériaux; la Biologie et l'Optique (COMBO); UMR CNRS 7515; Ecole Européenne de Chimie, Polymères et Matériaux (ECPM); 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Simon Budzák
- CEISAM; UMR CNRS 6230, BP 92208; 2 rue de la Houssinière 44322 Nantes, Cedex 03 France
| | - Denis Jacquemin
- CEISAM; UMR CNRS 6230, BP 92208; 2 rue de la Houssinière 44322 Nantes, Cedex 03 France
- Institut Universitaire de France; 1, rue Descartes 75005 Paris, Cedex 05 France
| | - Julien Massue
- Institut de Chimie et Procédés pour l'Energie; l'Environnement et la Santé (ICPEES); groupe Chimie Organique pour les Matériaux; la Biologie et l'Optique (COMBO); UMR CNRS 7515; Ecole Européenne de Chimie, Polymères et Matériaux (ECPM); 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
| | - Gilles Ulrich
- Institut de Chimie et Procédés pour l'Energie; l'Environnement et la Santé (ICPEES); groupe Chimie Organique pour les Matériaux; la Biologie et l'Optique (COMBO); UMR CNRS 7515; Ecole Européenne de Chimie, Polymères et Matériaux (ECPM); 25 Rue Becquerel 67087 Strasbourg Cedex 02 France
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44
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Identification of sennoside A as a novel inhibitor of the slingshot (SSH) family proteins related to cancer metastasis. Pharmacol Res 2017; 119:422-430. [PMID: 28274853 DOI: 10.1016/j.phrs.2017.03.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 02/26/2017] [Accepted: 03/03/2017] [Indexed: 02/06/2023]
Abstract
Phospho-cofilin (p-cofilin), which has a phosphate group on Ser-3, is involved in actin polymerization. Its dephosphorylated form promotes filopodia formation and cell migration by enhancing actin depolymerization. Protein phosphatase slingshot homologs (SSHs), known as dual-specificity phosphatases, catalyze hydrolytic removal of the Ser-3 phosphate group from phospho-cofilin. Aberrant SSH activity results in cancer metastasis, implicating SSHs as potential therapeutic targets for cancer metastasis. In this study, we screened 658 natural products purified from traditional oriental medicinal plants to identify three potent SSH inhibitors with submicromolar or single-digit micromolar Ki values: gossypol, hypericin, and sennoside A. The three compounds were purified from cottonseed, Saint John's wort, and rhubarb, respectively. Sennoside A markedly increased cofilin phosphorylation in pancreatic cancer cells, leading to impaired actin dynamics in pancreatic cancer cells with or without EGF stimulation and reduced motility and invasiveness in vitro and in vivo. Collaboratively, these results demonstrate that sennoside A is a novel inhibitor of SSHs and suggest that it may be valuable in the development of pharmaceutical drugs for treating cancer metastasis.
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45
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Niu Y, Wang Q, Wu H, Wang Y, Zhang Y. Experimental and DFT studies of disubstituted 2-(2-hydroxyphenyl)benzothiazole-based fluorophores synthesized by Suzuki coupling. NEW J CHEM 2017. [DOI: 10.1039/c7nj01525a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Elucidating the effect of simultaneous disubstitution on the fluorescence of ESIPT dyes through experimental observation and theoretical calculation.
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Affiliation(s)
- Yahui Niu
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling
- P. R. China
| | - Qin Wang
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling
- P. R. China
| | - Haoran Wu
- Innovation Experimental College
- Northwest A&F University
- Yangling
- P. R. China
| | - Yuxiu Wang
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling
- P. R. China
| | - Yanrong Zhang
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling
- P. R. China
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46
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Santos FS, Ramasamy E, Ramamurthy V, Rodembusch FS. Photoinduced electron transfer across an organic molecular wall: octa acid encapsulated ESIPT dyes as electron donors. Photochem Photobiol Sci 2017; 16:840-844. [DOI: 10.1039/c7pp00065k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Efficient photoinduced electron transfer from proton transfer dyes encapsulated within water soluble supramolecular host octa acid to electron acceptors present outside the capsule was observed in aqueous solution.
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Affiliation(s)
- Fabiano S. Santos
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
- Grupo de Pesquisa em Fotoquímica Orgânica Aplicada
| | | | - V. Ramamurthy
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Fabiano S. Rodembusch
- Grupo de Pesquisa em Fotoquímica Orgânica Aplicada
- Instituto de Química
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
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47
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Tang L, He P, Zhong K, Hou S, Bian Y. A new hydroxynaphthyl benzothiazole derived fluorescent probe for highly selective and sensitive Cu(2+) detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 169:246-51. [PMID: 27391231 DOI: 10.1016/j.saa.2016.06.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 06/22/2016] [Accepted: 06/28/2016] [Indexed: 05/13/2023]
Abstract
A new reactive probe, 1-(benzo[d]thiazol-2-yl)naphthalen-2-yl-picolinate (BTNP), was designed and synthesized. BTNP acts as a highly selective probe to Cu(2+) in DMSO/H2O (7/3, v/v, Tris-HCl 10mM, pH=7.4) solution based on Cu(2+) catalyzed hydrolysis of the picolinate ester moiety in BTNP, which leads to the formation of an ESIPT active product with dual wavelength emission enhancement. The probe also possesses the advantages of simple synthesis, rapid response and high sensitivity. The pseudo-first-order reaction rate constant was calculated to be 0.205min(-1). Moreover, application of BTNP to Cu(2+) detection in living cells and real water samples was also explored.
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Affiliation(s)
- Lijun Tang
- Department of Chemistry, Bohai University, Jinzhou 121013, China.
| | - Ping He
- Department of Chemistry, Bohai University, Jinzhou 121013, China
| | - Keli Zhong
- Department of Chemistry, Bohai University, Jinzhou 121013, China
| | - Shuhua Hou
- Department of Chemistry, Bohai University, Jinzhou 121013, China
| | - Yanjiang Bian
- Department of Chemistry, Bohai University, Jinzhou 121013, China
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48
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Wang Q, Xu L, Niu Y, Wang Y, Yuan MS, Zhang Y. Excited State Intramolecular Proton Transfer in Ethynyl-Extended Regioisomers of 2-(2′-Hydroxyphenyl)benzothiazole: Effects of the Position and Electronic Nature of Substituent Groups. Chem Asian J 2016; 11:3454-3464. [DOI: 10.1002/asia.201601340] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Qin Wang
- College of Science; Northwest A&F University; Yangling Shaanxi 712100 P. R. China
| | - Longfei Xu
- College of Science; Northwest A&F University; Yangling Shaanxi 712100 P. R. China
| | - Yahui Niu
- College of Science; Northwest A&F University; Yangling Shaanxi 712100 P. R. China
| | - Yuxiu Wang
- College of Science; Northwest A&F University; Yangling Shaanxi 712100 P. R. China
| | - Mao-Sen Yuan
- College of Science; Northwest A&F University; Yangling Shaanxi 712100 P. R. China
| | - Yanrong Zhang
- College of Science; Northwest A&F University; Yangling Shaanxi 712100 P. R. China
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49
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Comprehensive DFT and TD-DFT Studies on the Photophysical Properties of 5,6-Dichloro-1,3-Bis(2-Pyridylimino)-4,7-Dihydroxyisoindole: A New Class of ESIPT Fluorophore. J Fluoresc 2016; 26:1805-12. [PMID: 27455833 DOI: 10.1007/s10895-016-1872-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 07/06/2016] [Indexed: 10/21/2022]
Abstract
Hanson et al. [Org. Lett., 2011] reported the absorption and emission spectrum of 5,6-dichloro-1,3-bis(2-pyridylimino)-4,7-dihydroxyisoindole but the excited-state intramolecular proton transfer (ESIPT) process was not investigated. The photo-physical behaviour of 5,6-dichloro-1,3-bis(2-pyridylimino)-4,7-dihydroxyisoindole was studied using the density functional theory (DFT) and time-dependent density functional theory (TD-DFT). The functional used was B3LYP and 6-31G(d) was the basis set for all the atoms. All the ten tautomers were studied for the absorption and emission properties. It is found that the tautomer where hydroxyl groups are syn to nitrogen of isoindoline ring is most stable and thus, responsible for the ESIPT process. The computed absorption and emission values of tautomers using TD-DFT are in good agreement with those obtained experimentally.
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50
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Sahana S, Mishra G, Sivakumar S, Bharadwaj PK. A 2-(2'-hydroxyphenyl)benzothiazole (HBT)-quinoline conjugate: a highly specific fluorescent probe for Hg(2+) based on ESIPT and its application in bioimaging. Dalton Trans 2016; 44:20139-46. [PMID: 26531056 DOI: 10.1039/c5dt03719k] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A benzothiazole derived chemosensor L has been designed based on the excited-state intramolecular proton transfer (ESIPT) mechanism to afford a fluorescence turn-on response specifically in the presence of Hg(2+) ions over a host of biologically relevant metal ions as well as toxic heavy metal ions. The chemosensor exhibits high sensitivity with the detection limit down to 0.11 μM. The metal binding is supported by (1)H NMR titrations, ESI-MS spectral analysis and substantiated by theoretical calculations using the density functional theory. The probe shows cell membrane permeability and efficiency for the detection of Hg(2+) in HeLa cells.
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Affiliation(s)
- Sunanda Sahana
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
| | - Gargi Mishra
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Sri Sivakumar
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur-208016, India
| | - Parimal K Bharadwaj
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur-208016, India.
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