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Kostikova VA, Petrova NV, Chernonosov AA, Koval VV, Kovaleva ER, Wang W, Erst AS. Chemical Composition of Methanol Extracts from Leaves and Flowers of Anemonopsis macrophylla (Ranunculaceae). Int J Mol Sci 2024; 25:989. [PMID: 38256067 PMCID: PMC10816090 DOI: 10.3390/ijms25020989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Anemonopsis Siebold et Zucc. is an unstudied single-species genus belonging to the tribe Cimicifugeae (Ranunculaceae). The only species of this genus-Anemonopsis macrophylla Siebold and Zucc.-is endemic to Japan. There are no data on its chemical composition. This work is the first to determine (with liquid chromatography-high-resolution mass spectrometry, LC-HRMS) the chemical composition of methanol extracts of leaves and flowers of A. macrophylla. More than 100 compounds were identified. In this plant, the classes of substances are coumarins (13 compounds), furocoumarins (3), furochromones (2), phenolic acids (21), flavonoids (27), and fatty acids and their derivatives (15 compounds). Isoferulic acid (detected in extracts from this plant) brings this species closer to plants of the genus Cimicifuga, one of the few genera containing this acid and ferulic acid at the same time. Isoferulic acid is regarded as a reference component of a quality indicator of Cimicifuga raw materials. The determined profiles of substances are identical between the leaf and flower methanol extracts. Differences in levels of some identified substances were revealed between the leaf and flower extracts of A. macrophylla; these differences may have a substantial impact on the manifestation of the biological and pharmacological effects of the extracts in question.
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Affiliation(s)
- Vera A. Kostikova
- Central Siberian Botanical Garden, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia;
| | - Natalia V. Petrova
- Komarov Botanical Institute of Russian Academy of Sciences, St. Petersburg 197022, Russia;
| | - Alexander A. Chernonosov
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, Novosibirsk 630090, Russia; (A.A.C.); (V.V.K.)
| | - Vladimir V. Koval
- Institute of Chemical Biology and Fundamental Medicine, SB RAS, Novosibirsk 630090, Russia; (A.A.C.); (V.V.K.)
- Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Evgeniia R. Kovaleva
- Central Siberian Botanical Garden, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia;
- Department of Natural Sciences, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Wei Wang
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China;
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Andrey S. Erst
- Central Siberian Botanical Garden, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia;
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2
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Understanding the photodynamics of 3-hydroxypyran-4-one using surface hopping simulations. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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3
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Brett MW, Gordon CK, Hardy J, Davis NJLK. The Rise and Future of Discrete Organic-Inorganic Hybrid Nanomaterials. ACS PHYSICAL CHEMISTRY AU 2022; 2:364-387. [PMID: 36855686 PMCID: PMC9955269 DOI: 10.1021/acsphyschemau.2c00018] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Hybrid nanomaterials (HNs), the combination of organic semiconductor ligands attached to nanocrystal semiconductor quantum dots, have applications that span a range of practical fields, including biology, chemistry, medical imaging, and optoelectronics. Specifically, HNs operate as discrete, tunable systems that can perform prompt fluorescence, energy transfer, singlet fission, upconversion, and/or thermally activated delayed fluorescence. Interest in HNs has naturally grown over the years due to their tunability and broad spectrum of applications. This Review presents a brief introduction to the components of HNs, before expanding on the characterization and applications of HNs. Finally, the future of HN applications is discussed.
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Zhao X, Li X, Liang S, Dong X, Zhang Z. 3-Hydroxyflavone derivatives: promising scaffolds for fluorescent imaging in cells. RSC Adv 2021; 11:28851-28862. [PMID: 35478549 PMCID: PMC9038104 DOI: 10.1039/d1ra04767a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/21/2021] [Indexed: 11/21/2022] Open
Abstract
As a typical class of excited-state intramolecular proton transfer (ESIPT) molecules, 3-hydroxyflavone derivatives (3HF, also known as flavonols) have received much attention recently. Thereinto, the role of hydrophobic microenvironment is significant importance in promoting the process and effects of ESIPT, which can be regulated by the solvents, the existence of metal ions and proteins rich with α-helix structures or the advanced DNA structures. Considering that plenty of biological macromolecules offer cellular hydrophobic microenvironment, enhancing the ESIPT effects and resulting in dual emission, 3HF could be a promising scaffold for the development of fluorescent imaging in cells. Furthermore, as the widespread occurance of compounds with biological activity in plants, 3HF derivatives are much more secure to be cellular diagnosis and treatment integrated fluorescent probes. In this review, multiple regulatory strategies for the fluorescence emission of 3HF derivatives have been collectively and comprehensively analyzed, including the solvent effects, metal chelation, interaction with proteins or DNAs, which would be beneficial for ESIPT-promoting or ESIPT-blocking processes and then enhance or control the fluorescence emission of 3HF effectively. We expect that this review would provide a new perspective to develop novel 3HF-based fluorescent sensors for imaging in cells and plants.
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Affiliation(s)
- Xueke Zhao
- National Local Joint Engineering Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University Wuhan Hubei 430073 P. R. China
| | - Xiang Li
- College of Chemistry and Molecular Engineering, Peking University Beijing 100871 P. R. China .,School of Chemistry, Central China Normal University Wuhan Hubei 430079 P. R. China
| | - Shuyu Liang
- College of Chemistry and Molecular Engineering, Peking University Beijing 100871 P. R. China
| | - Xiongwei Dong
- National Local Joint Engineering Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University Wuhan Hubei 430073 P. R. China
| | - Zhe Zhang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University Guangzhou 510006 China
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Kalli S, Araya-Cloutier C, Hageman J, Vincken JP. Insights into the molecular properties underlying antibacterial activity of prenylated (iso)flavonoids against MRSA. Sci Rep 2021; 11:14180. [PMID: 34244528 PMCID: PMC8270993 DOI: 10.1038/s41598-021-92964-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 06/09/2021] [Indexed: 02/06/2023] Open
Abstract
High resistance towards traditional antibiotics has urged the development of new, natural therapeutics against methicillin-resistant Staphylococcus aureus (MRSA). Prenylated (iso)flavonoids, present mainly in the Fabaceae, can serve as promising candidates. Herein, the anti-MRSA properties of 23 prenylated (iso)flavonoids were assessed in-vitro. The di-prenylated (iso)flavonoids, glabrol (flavanone) and 6,8-diprenyl genistein (isoflavone), together with the mono-prenylated, 4'-O-methyl glabridin (isoflavan), were the most active anti-MRSA compounds (Minimum Inhibitory Concentrations (MIC) ≤ 10 µg/mL, 30 µM). The in-house activity data was complemented with literature data to yield an extended, curated dataset of 67 molecules for the development of robust in-silico prediction models. A QSAR model having a good fit (R2adj 0.61), low average prediction errors and a good predictive power (Q2) for the training (4% and Q2LOO 0.57, respectively) and the test set (5% and Q2test 0.75, respectively) was obtained. Furthermore, the model predicted well the activity of an external validation set (on average 5% prediction errors), as well as the level of activity (low, moderate, high) of prenylated (iso)flavonoids against other Gram-positive bacteria. For the first time, the importance of formal charge, besides hydrophobic volume and hydrogen-bonding, in the anti-MRSA activity was highlighted, thereby suggesting potentially different modes of action of the different prenylated (iso)flavonoids.
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Affiliation(s)
- Sylvia Kalli
- grid.4818.50000 0001 0791 5666Laboratory of Food Chemistry, Wageningen University & Research, Wageningen, The Netherlands
| | - Carla Araya-Cloutier
- grid.4818.50000 0001 0791 5666Laboratory of Food Chemistry, Wageningen University & Research, Wageningen, The Netherlands
| | - Jos Hageman
- grid.4818.50000 0001 0791 5666Biometris, Applied Statistics, Wageningen University & Research, Wageningen, The Netherlands
| | - Jean-Paul Vincken
- grid.4818.50000 0001 0791 5666Laboratory of Food Chemistry, Wageningen University & Research, Wageningen, The Netherlands
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6
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Kaur K, Tomar J, Bansal M. Role of hydrogen in ground and excited state studies of 2-aryl-3-hydroxychromenones in different solvents. CAN J CHEM 2019. [DOI: 10.1139/cjc-2018-0453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Radical scavenging activity (%SC) of three 2-heteroaryl 3-hydroxy chromenones (3-HCs) relative to 3-hydroxy flavones (3-HF) has been determined, using 2,2-diphenyl-1-picrylhydrazyl (DPPH) as a radical scavenger both in methanol (MeOH) and acetonitrile (ACN) as solvents. Among the three 3-HCs, 2-(furan-2-yl)-3-hydroxy-4 H-chromen-4-one (FHC), 3-hydroxy-2-(thiophene-2-yl)-4H-chromen-4-one (THC), and 3-hydroxy-2-(pyrrol-2-yl)-4H-chromen-4-one (PHC), the last 3-HC was included in our earlier reported studies on absorption, emission, and excitation spectra. Detailed studies on the excited state intramolecular proton transfer (ESIPT) on PHC relative to other three 3-HCs have been given. Order of %SCs is PHC > FHC > THC > 3-HF in MeOH and PHC > FHC ≈ THC > 3-HF in ACN, which are similar to that of intensity ratio of normal and tautomeric forms (IN*/IT*). Both %SC and IN*/IT* depend upon the potential of hydrogen of 3-hydroxy in 3-HCs in their ground and excited states, respectively. It has been found that for PHC, IN*/IT* and %SC are distinctly high compared with other chromenones. It is concluded that the determination of %SC can be as important as IN*/IT* for these.
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Affiliation(s)
- Kulvir Kaur
- Department of Chemistry, Punjabi University Patiala, Pin Code 147002, Patiala, India
- Department of Chemistry, Punjabi University Patiala, Pin Code 147002, Patiala, India
| | - Jyoti Tomar
- Department of Chemistry, Punjabi University Patiala, Pin Code 147002, Patiala, India
- Department of Chemistry, Punjabi University Patiala, Pin Code 147002, Patiala, India
| | - Manisha Bansal
- Department of Chemistry, Punjabi University Patiala, Pin Code 147002, Patiala, India
- Department of Chemistry, Punjabi University Patiala, Pin Code 147002, Patiala, India
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Synthesis and photocytotoxic activity of [1,2,3]triazolo[4,5-h][1,6]naphthyridines and [1,3]oxazolo[5,4-h][1,6]naphthyridines. Eur J Med Chem 2018; 162:176-193. [PMID: 30445266 DOI: 10.1016/j.ejmech.2018.10.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 10/02/2018] [Accepted: 10/31/2018] [Indexed: 12/31/2022]
Abstract
[1,2,3]Triazolo[4,5-h][1,6]naphthyridines and [1,3]oxazolo[5,4-h][1,6]naphthyridines were synthesized with the aim to investigate their photocytotoxic activity. Upon irradiation, oxazolo-naphtapyridines induced light-dependent cell death at nanomolar/low micromolar concentrations (EC50 0.01-6.59 μM). The most photocytotoxic derivative showed very high selectivity and photocytotoxicity indexes (SI = 72-86, PTI>5000), along with a triplet excited state with exceptionally long lifetime (18.0 μs) and high molar absorptivity (29781 ± 180 M-1cm-1 at λmax 315 nm). The light-induced production of ROS promptly induced an unquenchable apoptotic process selectively in tumor cells, with mitochondrial and lysosomal involvement. Altogether, these results demonstrate that the most active compound acts as a promising singlet oxygen sensitizer for biological applications.
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Lazzaroni S, Dondi D, Mezzetti A, Protti S. Role of solute-solvent hydrogen bonds on the ground state and the excited state proton transfer in 3-hydroxyflavone. A systematic spectrophotometric study. Photochem Photobiol Sci 2018; 17:923-933. [PMID: 29911222 DOI: 10.1039/c8pp00053k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A detailed account on the photophysics of 3-hydroxyflavone (3HF) in 27 organic solvents is reported. Dual fluorescence of neutral 3HF was observed in protic, polar, and weakly polar solvents, endowed with sufficiently high hydrogen bond accepting and/or donating capabilities. Ground-state solvent-induced 3HF deprotonation was reported in 14 cases. 3HF anion photophysics was investigated, and the deprotonation constant Kdep calculated. Previously reported models (based on solute-solvent intermolecular hydrogen bonds) to explain solvent effects on Excited-State Intramolecular Proton Transfer (ESIPT) and on solvent-induced deprotonation have been re-examined and improved in order to rationalize the observed photophysical behaviour in all the studied solvents. Hydrogen bond donor acidity and hydrogen bond acceptor basicity are shown to be key parameters. The results are discussed in the framework of the use of 3HF as an environment-sensitive fluorescent sensor in several research fields, and as a model system in the study of ESIPT reactions. Solvent effects on 3HF reactivity are also discussed, as the role of the surrounding media on the chemistry of flavonols is an emerging topic in natural product research.
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Affiliation(s)
- Simone Lazzaroni
- Radchem Lab, Department of Chemistry, University of Pavia, Via Taramelli 10, Italy
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9
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Li D, Xing Y, Ding L, Wu C, Hou G, Song B. Tuning the emission of a water-soluble 3-hydroxyflavone derivative by host-guest complexation. SOFT MATTER 2018; 14:4231-4237. [PMID: 29624193 DOI: 10.1039/c8sm00349a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
3-Hydroxyflavone derivatives have great potential as fluorescent probes for bio-labeling in aqueous medium. They were extensively studied in various organic solvents for the "excited state intramolecular proton transfer" process, but seldom addressed in aqueous solution due to the poor water solubility. Herein, an amphiphilic molecule bearing 3-hydroxyflavone and oligo(ethylene oxide) (denoted as 3HF-EO) was designed and synthesized. Different from the fluorescence in organic solvents, 3HF-EO in aqueous solution showed a remarkable single fluorescence emission, which is ascribed to the fluorescence of its anionic species. We found that the fluorescence intensity could be efficiently tuned via host-guest complexation. α-CD has little effect on the emission, while β-CD and γ-CD lead to enhanced and reduced emissions of 3HF-EO, respectively. The 1H NMR and 2D NOESY NMR spectra indicate that α-CD barely had any interaction with 3HF-EO, while β-CD and γ-CD formed complexes with one and two 3HF-EO molecules, respectively. These results provide a sound explanation for the modulated fluorescence intensity.
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Affiliation(s)
- Dahua Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
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10
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Tomin VI. Comment on 'temperature dependent spectroscopic and excited state dynamics of 3-hydroxychromones with electron donor and acceptor substituents'. Methods Appl Fluoresc 2018; 6:038001. [PMID: 29570099 DOI: 10.1088/2050-6120/aab931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Vladimir I Tomin
- Institute of Physics, Pomeranian University in Słupsk, Słupsk, 76-200 Poland
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11
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Ab initio study of polar and non-polar aprotic solvents effects on some 3-hydroxychromones and 3-hydroxyquinolones derivatives. J Mol Model 2018. [PMID: 29541924 DOI: 10.1007/s00894-018-3628-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The photophysical properties of some 3-hydroxychromones (3-HC) and 3-hydroxyquinolones (3-HQ) derivatives are investigated in polar and non-polar aprotic solvents using the TDDFT method and the PCM formalism. In acetonitrile and n-hexane, 2-(2-benzothienyl)-3-HC) (BTHC), 2-furyl-3-HQ (FHQ), and 1-methyl-2-furyl-3-HQ (MFHQ) have exhibited dual emission bands due to the excited state intramolecular proton transfer (ESIPT) reaction, leading to a single excited tautomer form. Our results indicate a very high BTHC light absorption efficiency and radiative rate constant. A charge transfer (CT) analysis suggests that the chromone moiety acts as an acceptor group while quinolone moiety acts as an electron donor. In addition, in non-polar n-hexane the furyl group may act as an acceptor, while in polar acetonitrile it may act as an electron donor. The energies of the upper and lower states of the normal form fluorescence have been decreased by the introduction of ortho-methyl group in FHQ. In all states, MFHQ exhibits large distortions of the dihedral angle between the chromone moiety and the furan group in para position. The ESIPT reaction is irreversible for the three derivatives in all cases studied in this work. Since experimental data with n-hexane are not available, results concerning this solvent are only predictions.
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Skilitsi AI, Agathangelou D, Shulov I, Conyard J, Haacke S, Mély Y, Klymchenko A, Léonard J. Ultrafast photophysics of the environment-sensitive 4'-methoxy-3-hydroxyflavone fluorescent dye. Phys Chem Chem Phys 2018; 20:7885-7895. [PMID: 29509200 DOI: 10.1039/c7cp08584b] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The excited state intramolecular proton transfer (ESIPT) of 3-hydroxyflavone derivatives results in a fluorescence spectrum composed of two emission bands, the relative intensity of which is strongly influenced by the interaction with the local environment. We use time-resolved fluorescence and ultrafast transient absorption spectroscopies to investigate the photophysics of 4'-methoxy-3-hydroxyflavone in different solvents characterized by various polarities and hydrogen (H) bonding capabilities. We evidence that in this compound, the ESIPT reaction rate varies by more than 3 orders of magnitude, depending on the H-bonding capability of its local environment. This remarkable property is attributed to the moderate electron-donating strength of the 4'-methoxy substituent, and turns this fluorescent dye into a very promising fluorescent probe of biomolecular structures and interactions, where local structural heterogeneity may possibly be revealed by resolving a distribution of ESIPT reaction rates.
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Affiliation(s)
- Anastasia Ioanna Skilitsi
- Institut de Physique et Chimie des Matériaux de Strasbourg, & Labex NIE CNRS Université de Strasbourg, Strasbourg, France.
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The effect of protic solvents on the excited state proton transfer of 3-hydroxyflavone: A TD-DFT static and molecular dynamics study. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.12.148] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Tomin VI, Dubrovkin JM. Kinetics of Anti-Kasha Photoreactions. Direct Excitation of a Higher Excited State. ChemistrySelect 2017. [DOI: 10.1002/slct.201701518] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Kaur K, Kaur R, Tomar J, Bansal M. Photoreactions of 2-(furan-2-yl)-3-hydroxy-4H-chromen-4-one and 3-hydroxy-2-(thiophene-2-yl)-4H-chromen-4-one using cyclohexane and acetonitrile as solvents. Photochem Photobiol Sci 2017; 16:1311-1319. [PMID: 28703244 DOI: 10.1039/c7pp00106a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photolysis of the titled chromenones was carried out at their longest absorption band (∼360 nm) using cyclohexane (CH) and acetonitrile (ACN) as solvents, in both aerated and de-aerated solutions. Different dimeric photoproducts were formed with both chromenones in aerated solutions. On photolysing 2-(furan-2-yl)-3-hydroxy-4H-chromen-4-one (FHC) in aerated cyclohexane, 2-(furan-2-yl)-2-{[2-(furan-2yl)-4-oxo-4H-chromen-3-yl]oxy}-2H-chromene-3,4-dione (a dehydrodimer) was formed, and on photolysing 3-hydroxy-2-(thiophene-2-yl)-4H-chromen-4-one (THC) in aerated ACN, a different dimeric product was isolated and identified. The corresponding 3-aryl-3-hydroxy-1,2-indandiones were also detected with FHC in ACN and with THC in CH, in addition to the dimeric products in both cases. On the other hand, in the de-aerated solutions, only the corresponding 1,2-indandiones were detected. 3-(Furan-2-yl)isobenzofuran-1(3H)-one as a secondary product was also detected with FHC in both solvents. An attempt was made to isolate the spectra of the photoproducts in situ. Excited State Intramolecular Proton Transfer (ESIPT) and Excited State Intramolecular Charge Transfer (ESICT) processes complicate the photodynamics of the reaction, making it difficult to predict the mechanisms of the photoreactions. However, tentative mechanisms have been proposed for the formation of the photoproducts.
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Affiliation(s)
- Kulvir Kaur
- Department of Chemistry, Punjabi University, Patiala-147002, Punjab, India.
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16
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Ahn S, Lim Y, Koh D. Crystal structure of 2-(2,3-di-meth-oxy-naphthalen-1-yl)-3-hy-droxy-6-meth-oxy-4H-chromen-4-one. Acta Crystallogr E Crystallogr Commun 2015; 71:o842-3. [PMID: 26594556 PMCID: PMC4645031 DOI: 10.1107/s2056989015018861] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 10/07/2015] [Indexed: 01/08/2023]
Abstract
In the title compound, C22H18O6, the dimeth-oxy-substituted naphthalene ring system is twisted relative to the 4H-chromenon skeleton by 88.96 (3)°. The two meth-oxy substituents are tilted from the naphthalene ring system by 1.4 (4) and 113.0 (2)°, respectively. An intra-molecular O-H⋯O hydrogen bond closes an S(5) ring motif. In the crystal, pairs of O-H⋯O hydrogen bonds form inversion dimers with R (2) 2(10) loops and C-H⋯O inter-actions connect the dimers into [010] chains.
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Affiliation(s)
- Seunghyun Ahn
- Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul 143-701, Republic of Korea
| | - Yoongho Lim
- Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul 143-701, Republic of Korea
| | - Dongsoo Koh
- Department of Applied Chemistry, Dongduk Women’s University, Seoul 136-714, Republic of Korea
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Narita F, Takura A, Fujihara T. Crystal structure of 2-(4-tert-butyl-phen-yl)-3-hydroxy-4H-chromen-4-one. Acta Crystallogr E Crystallogr Commun 2015; 71:824-6. [PMID: 26279877 PMCID: PMC4518945 DOI: 10.1107/s2056989015011482] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 06/13/2015] [Indexed: 05/23/2024]
Abstract
Yellow-green fluorescent crystals of the title compound, C19H18O3, were obtained by the reaction of hy-droxy-aceto-phenone and 4-tert-butyl-benzaldehyde with hydrogen peroxide as oxidant. The plane of the benzene ring is slightly twisted to the mean plane of the 4H-chromene-4-one moiety (r.m.s. deviation = 0.0191 Å) by 10.53 (8)°. In the crystal, mol-ecules are linked by pairs of O-H⋯O hydrogen bonds, forming inversion dimers with an R 2 (2)(10) ring motif. The dimers are linked via C-H⋯π inter-actions, forming sheets parallel to (10-1).
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Affiliation(s)
- Fuka Narita
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, Shimo-Okubo 255, Sakura-ku, Saitama 338-8570, Japan
| | - Akihiro Takura
- Department of Chemistry, Graduate School of Science and Engineering, Saitama University, Shimo-Okubo 255, Sakura-ku, Saitama 338-8570, Japan
| | - Takashi Fujihara
- Comprehensive Analysis Center for Science, Saitama University, Shimo-Okubo 255, Sakura-ku, Saitama 338-8570, Japan
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Wu WR. Theoretical investigation on the excited-state intramolecular proton transfer mechanism of 2-(2′-benzofuryl)-3-hydroxychromone. J PHYS ORG CHEM 2015. [DOI: 10.1002/poc.3455] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Wei-Rong Wu
- Key Laboratory of Inorganic Chemistry in Universities of Shandong, Department of Chemistry and Chemical Engineering; Jining University; Qufu 273155 Shandong China
- School of Chemistry and Chemical Engineering; Jinan University; Jinan 250022 China
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19
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Protti S, Mezzetti A. Solvent effects on the photophysics and photoreactivity of 3-hydroxyflavone: A combined spectroscopic and kinetic study. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2014.12.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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BANSAL MANISHA, KAUR RANBIR. Electromeric effect of substitution at 6 th position in 2-(Furan-2-yl)-3-hydroxy-4 H-chromen-4-one (FHC) on the absorption and emission spectra. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0786-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tomin VI, Demchenko AP, Chou PT. Thermodynamic vs. kinetic control of excited-state proton transfer reactions. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2015. [DOI: 10.1016/j.jphotochemrev.2014.09.005] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Barthes NPF, Karpenko IA, Dziuba D, Spadafora M, Auffret J, Demchenko AP, Mély Y, Benhida R, Michel BY, Burger A. Development of environmentally sensitive fluorescent and dual emissive deoxyuridine analogues. RSC Adv 2015. [DOI: 10.1039/c5ra02709h] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We designed and developed fluorescent deoxyuridine analogues with strong sensitivity to hydration for the major groove labelling of DNA.
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Affiliation(s)
- N. P. F. Barthes
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
| | - I. A. Karpenko
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
| | - D. Dziuba
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
| | - M. Spadafora
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
| | - J. Auffret
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
| | | | - Y. Mély
- Laboratoire de Biophotonique et Pharmacologie
- UMR 7213
- Faculté de Pharmacie
- Université de Strasbourg
- CNRS
| | - R. Benhida
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
| | - B. Y. Michel
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
| | - A. Burger
- Institut de Chimie de Nice
- UMR 7272
- Université de Nice Sophia Antipolis
- CNRS
- 06108 Nice Cedex 2
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23
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Chromones as a privileged scaffold in drug discovery: A review. Eur J Med Chem 2014; 78:340-74. [DOI: 10.1016/j.ejmech.2014.03.047] [Citation(s) in RCA: 305] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 03/14/2014] [Accepted: 03/15/2014] [Indexed: 01/03/2023]
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24
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Das R, Duportail G, Ghose A, Richert L, Klymchenko A, Chakraborty S, Yesylevskyy S, Mely Y. Tuning excited-state proton transfer dynamics of a 3-hydroxychromone dye in supramolecular complexes via host–guest steric compatibility. Phys Chem Chem Phys 2014; 16:776-84. [DOI: 10.1039/c3cp52597j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Shalini S, Girija CR, Simon L, Srinivasan KK, Venkatesha TV. rac-3-(4-Hy-droxy-benz-yl)chroman-4-one. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1011-2. [PMID: 24046596 PMCID: PMC3772453 DOI: 10.1107/s1600536813014645] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2013] [Accepted: 05/27/2013] [Indexed: 11/10/2022]
Abstract
In the racemic title compound, C16H14O3, the ring of the 4-hy-droxy-benzyl substituent group forms a dihedral angle of 80.12 (12)° with the benzene ring of the chromanone system. Two C atoms of the pyran-one ring and the H atoms on the benzyl α-C atom are disordered over two sites, with site-occupation factors of 0.818 (8) and 0.182 (8). The crystal structure is stabilized by O-H⋯O hydrogen bonds, which form parallel one-dimensional zigzag chains down the c axis and are inter-connected by both methine C-H⋯O hydrogen bonds and weak aromatic C-H⋯π inter-actions, giving a sheet structure lying parallel to [011].
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Affiliation(s)
- S Shalini
- Department of Chemistry, Chemistry Research Centre (Affiliated to Kuvempu University), SSMRV Degree College, Jayanagar 4th T Block, Bangalore 560 041, India
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Demchenko AP, Tang KC, Chou PT. Excited-state proton coupled charge transfer modulated by molecular structure and media polarization. Chem Soc Rev 2013; 42:1379-408. [PMID: 23169387 DOI: 10.1039/c2cs35195a] [Citation(s) in RCA: 452] [Impact Index Per Article: 41.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Charge and proton transfer reactions in the excited states of organic dyes can be coupled in many different ways. Despite the complementarity of charges, they can occur on different time scales and in different directions of the molecular framework. In certain cases, excited-state equilibrium can be established between the charge-transfer and proton-transfer species. The interplay of these reactions can be modulated and even reversed by variations in dye molecular structures and changes of the surrounding media. With knowledge of the mechanisms of these processes, desired rates and directions can be achieved, and thus the multiple emission spectral features can be harnessed. These features have found versatile applications in a number of cutting-edge technological areas, particularly in fluorescence sensing and imaging.
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Affiliation(s)
- Alexander P Demchenko
- Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, 9 Leontovicha street, Kiev 01030, Ukraine.
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27
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Yang D, Yang Y, Liu Y. A TD-DFT study on the excited-state hydrogen-bonding interactions in the 2-(2-thienyl)-3-hydroxy-4(1H)-quinolone-(H2O)3 cluster. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2012.07.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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28
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Kenfack CA, Klymchenko AS, Duportail G, Burger A, Mély Y. Ab initio study of the solvent H-bonding effect on ESIPT reaction and electronic transitions of 3-hydroxychromone derivatives. Phys Chem Chem Phys 2012; 14:8910-8. [PMID: 22641242 DOI: 10.1039/c2cp40869d] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The electronic transitions occurring in 4-(N,N-dimethylamino)-3-hydroxyflavone (DMAF) and 2-furanyl-3-hydroxychromone (FHC) were investigated using the TDDFT method in aprotic and protic solvents. The solvent effect was incorporated into the calculations via the PCM formalism. The H-bonding between solute and protic solvent was taken into account by considering a molecular complex between these molecules. To examine the effect of the H-bond on the ESIPT reaction, the absorption and emission wavelengths as well as the energies of the different states that intervene during these electronic transitions were calculated in acetonitrile, ethanol and methanol. The calculated positions of the absorption and emission wavelengths in various solvents were in excellent agreement with the experimental spectra, validating our approach. We found that in DMAF, the hydrogen bonding with protic solvents makes the ESIPT reaction energetically unfavourable, which explains the absence of the ESIPT tautomer emission in protic solvents. In contrast, the excited tautomer state of FHC remains energetically favourable in both aprotic and protic solvents. Comparing our calculations with the previously reported time-resolved fluorescence data, the ESIPT reaction of DMAF in aprotic solvents is reversible because the emitting states are energetically close, whereas in FHC, ESIPT is irreversible because the tautomer state is below the corresponding normal state. Therefore, the ESIPT reaction in DMAF is controlled by the relative energies of the excited states (thermodynamic control), while in FHC the ESIPT is controlled probably by the energetic barrier (kinetic control).
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Affiliation(s)
- Cyril A Kenfack
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213 du CNRS, Faculté de Pharmacie, Université de Strasbourg, 74, Route du Rhin, 67401 Illkirch Cedex, France.
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29
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Wera M, Serdiuk IE, Roshal AD, Błażejowski J. 3-Hy-droxy-2-(4-meth-oxy-phen-yl)-4H-chromen-4-one. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o440. [PMID: 21523104 PMCID: PMC3051573 DOI: 10.1107/s160053681100167x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Accepted: 01/11/2011] [Indexed: 11/21/2022]
Abstract
In the title compound, C16H12O4, the benzene ring is twisted at an angle of 12.3 (1)° relative to the 4H-chromene skeleton, and an intramolecular O—H⋯O hydrogen bond occurs. The methoxy group is almost coplanar with the benzene ring [1.5 (1)°]. In the crystal, inversely oriented molecules are arranged in double (A, A′) columns, along the b axis, and are linked by a network of intermolecular O—H⋯O hydrogen bonds (between A and A′) and C—H⋯π contacts (within A or A′). The 4H-chromene cores are parallel within A or A′, but make a dihedral angle of 88.6 (1)° between A and A′.
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30
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Wera M, Pivovarenko VG, Sikorski A, Lis T, Błażejowski J. 2-(Furan-2-yl)-3-hy-droxy-4H-chromen-4-one. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o266. [PMID: 21522958 PMCID: PMC3051447 DOI: 10.1107/s1600536810053596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Accepted: 12/21/2010] [Indexed: 11/10/2022]
Abstract
In the crystal structure of the title compound, C(13)H(8)O(4), the inversely oriented mol-ecules form inversion dimers through pairs of O-H⋯O hydrogen-bonding inter-actions. An intramolecular O-H⋯O hydrogen bond occurs. In the packing of the mol-ecules, the nearly planar 2-(furan-2-yl)-4H-chromene units [dihedral angle between the chromene and furan rings = 3.8 (1)°] are either parallel or inclined at an angle of 80.7 (1)°.
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31
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32
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Das R, Klymchenko AS, Duportail G, Mély Y. Unusually slow proton transfer dynamics of a 3-hydroxychromone dye in protic solvents. Photochem Photobiol Sci 2009; 8:1583-9. [DOI: 10.1039/b906710h] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Bilokin’ MD, Shvadchak VV, Yushchenko DA, Duportail G, Mély Y, Pivovarenko VG. Dual-Fluorescence Probe of Environment Basicity (Hydrogen Bond Accepting Ability) Displaying no Sensitivity to Polarity. J Fluoresc 2008; 19:545-53. [PMID: 19020962 DOI: 10.1007/s10895-008-0443-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2008] [Accepted: 11/11/2008] [Indexed: 10/21/2022]
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34
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Enander K, Choulier L, Olsson AL, Yushchenko DA, Kanmert D, Klymchenko AS, Demchenko AP, Mély Y, Altschuh D. A peptide-based, ratiometric biosensor construct for direct fluorescence detection of a protein analyte. Bioconjug Chem 2008; 19:1864-70. [PMID: 18693760 DOI: 10.1021/bc800159d] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We present the design, synthesis, and functional evaluation of peptide-based fluorescent constructs for wavelength-ratiometric biosensing of a protein analyte. The concept was shown using the high-affinity model interaction between the 18 amino acid peptide pTMVP and a recombinant antibody fragment, Fab57P. pTMVP was functionalized in two different positions with 6-bromomethyl-2-(2-furanyl)-3-hydroxychromone, an environmentally sensitive fluorophore with a two-band emission. The equilibrium dissociation constant of the interaction between pTMVP and Fab57P was largely preserved upon labeling. The biosensor ability of the labeled peptide constructs was evaluated in terms of the relative intensity change of the emission bands from the normal (N*) and tautomer (T*) excited-state species of the fluorophore ( I(N*)/I(T*)) upon binding of Fab57P. When the peptide was labeled in the C terminus, the I(N*)/I(T*) ratio changed by 40% upon analyte binding, while labeling close to the residues most important for binding resulted in a construct that completely lacked ratiometric biosensor ability. Integrated biosensor elements for reagentless detection, where peptides and ratiometric fluorophores are combined to ensure robustness in both recognition and signaling, are expected to become an important contribution to the design of future protein quantification assays in immobilized formats.
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Affiliation(s)
- Karin Enander
- Division of Molecular Physics, Department of Physics, Chemistry and Biology, Linkoping University, 58183 Linkoping, Sweden.
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35
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Yushchenko DA, Shvadchak VV, Klymchenko AS, Duportail G, Pivovarenko VG, Mély Y. Modulation of excited-state intramolecular proton transfer by viscosity in protic media. J Phys Chem A 2007; 111:10435-8. [PMID: 17910424 DOI: 10.1021/jp074726u] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
3-Hydroxyquinolones undergo excited-state intramolecular proton transfer (ESIPT), resulting in a dual emission highly sensitive to H-bonding perturbations. Here, we report on the strong effect of viscosity on the dual emission of 2-(2-thienyl)-3-hydroxyquinolone in protic solvents. An increase in viscosity significantly decreases the formation of the ESIPT product, thus changing dramatically the ratio of the two emission bands. Time-resolved studies suggest the presence of solvated species characterized by decay times close to the solvent relaxation times in viscous media. The intramolecular H bond in this species is probably disrupted by the solvent, and therefore, its ESIPT requires a reorganization of the solvation shell for restoring this intramolecular H bond. Thus, the ESIPT reaction of this dye and its dual emission depend on solvent relaxation rates and, therefore, on viscosity. The present results suggest a new physical principle for the fluorescence ratiometric measurement of local viscosity.
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Affiliation(s)
- Dmytro A Yushchenko
- Photophysique des Interactions Biomoléculaires, UMR 7175-LC1 du CNRS, Institut Gilbert Laustriat, Faculté de Pharmacie, Université Louis Pasteur, 67401 Illkirch, France.
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36
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Yushchenko DA, Shvadchak VV, Klymchenko AS, Duportail G, Pivovarenko VG, Mély Y. Steric control of the excited-state intramolecular proton transfer in 3-hydroxyquinolones: steady-state and time-resolved fluorescence study. J Phys Chem A 2007; 111:8986-92. [PMID: 17718453 DOI: 10.1021/jp071075t] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
3-Hydroxyquinolones (3HQs), similarly to their 3-hydroxychromone analogs, undergo excited state intramolecular proton transfer (ESIPT) resulting in dual emission. In the ground state, 2-phenyl-3HQ derivatives are not flat due to a steric hindrance between the 2-phenyl group and the 3-OH group that participates in the ESIPT reaction. To study the effect of this steric hindrance on the ESIPT reaction, a number of 3HQ derivatives have been synthesized and characterized in different organic solvents by steady-state and time-resolved fluorescence techniques. According to our results, 2-phenyl-3HQ derivatives undergo much faster ESIPT (by nearly 1 order of magnitude) than their 2-methyl-3HQ analogs. Moreover, 1-methyl-2-phenyl-3HQ having a strongly twisted 2-phenyl group undergoes a two- to three-fold slower ESIPT compared to 2-phenyl-3HQ. These results suggest that the flatter conformation of 2-phenyl-3HQ, which allows a close proximity of the 2-phenyl and 3-OH groups, favors a fast ESIPT reaction. The absorption and fluorescence spectra of the 3HQ derivatives additionally confirm that the steric rather than the electronic effect of the 2-phenyl group is responsible for the faster ESIPT reaction. Based on the spectroscopic studies and quantum chemical calculations, we suggest that the 2-phenyl group decreases the rotational freedom of its proximal 3-OH group in the more planar conformation of 2-phenyl-3HQ. As a result, the conformations of 3HQ, where the 3-OH group orients to form an intramolecular H-bond with the 4-carbonyl group, are favored over those with a disrupted intramolecular H-bond. Therefore, the 2-phenyl group sterically favors the intramolecular H-bond and thus accelerates the ESIPT reaction. This conclusion provides a new understanding of the ESIPT process in 3-hydroxyquinolones and related systems and suggests new possibilities for the design of ESIPT based molecular sensors and switchers.
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Affiliation(s)
- Dmytro A Yushchenko
- Department of Chemistry, Kyiv National Taras Shevchenko University, 01033 Kyiv, Ukraine.
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37
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de Klerk JS, Szemik-Hojniak A, Ariese F, Gooijer C. Intramolecular Proton-Transfer Processes Starting at Higher Excited States: A Fluorescence Study on 2-Butylamino-6-methyl-4-nitropyridine N-Oxide in Nonpolar Solutions. J Phys Chem A 2007; 111:5828-32. [PMID: 17559196 DOI: 10.1021/jp0672813] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This article describes the exceptional photophysics of 2-butylamino-6-methyl-4-nitropyridine N-oxide (2B6M). It is known from the literature that this compound may undergo excited-state intra- or intermolecular proton-transfer reactions. In nonpolar solvents, 2B6M exhibits an unusual fluorescence behavior: there is a substantial difference between the relative band intensities of the excitation and absorption spectra. Furthermore, in emission two bands are observed, and their relative intensities depend on the excitation wavelength, thus violating the Kasha-Vavilov rule. It is the objective of this research to interpret these results. For this purpose, steady-state fluorescence excitation and emission spectra in the liquid state were recorded and quantum yields were determined for the two types of emission. In addition, absorption spectra were measured at room temperature and under low-temperature conditions. Finally, fluorescence lifetimes of the emitting species were determined using the time-correlated single photon counting technique. The results suggest that in the liquid state only one (monomeric) ground state species dominates, which can emit via two different pathways (from the normal and the tautomeric excited state). The excitation spectra point at two different internal proton-transfer processes, one starting at the S1 state and one starting at the S2 state. On the basis of the measured lifetimes and fluorescence quantum yields, a kinetic scheme was completed that can quantitatively explain the observations.
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Affiliation(s)
- Joost S de Klerk
- Analytical Chemistry & Applied Spectroscopy, Laser Centre Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
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Yushchenko DA, Vadzyuk OB, Kosterin SO, Duportail G, Mély Y, Pivovarenko VG. Sensing of adenosine-5'-triphosphate anion in aqueous solutions and mitochondria by a fluorescent 3-hydroxyflavone dye. Anal Biochem 2007; 369:218-25. [PMID: 17568555 DOI: 10.1016/j.ab.2007.05.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2007] [Revised: 05/03/2007] [Accepted: 05/04/2007] [Indexed: 11/23/2022]
Abstract
The current work demonstrates the formation of complexes between the tetraanion adenosine-5'-triphosphate (ATP) and the flavone derivative 3-hydroxy-4'-(dimethylamino)flavone (FME). Two kinds of complexes are evidenced. The higher affinity ATP-FME complex corresponds to a stacking of the two aromatic molecules and leads to a strong hypochromicity of the absorption spectrum of the dye. The lower affinity (ATP)(2)-FME complex results in a strong increase of the fluorescence intensity ( approximately 20-fold), due mainly to the appearance of the anionic form of FME, as shown by the important red shift (60 nm) of both excitation and emission spectra. Molecular modeling indicates that this anionic form results from the deprotonation induced by the influence of the tetra-charged triphosphate group of the ATP molecules. Using its strong enhancement of fluorescence intensity in the presence of ATP, the dye was used successfully to monitor the succinate-induced production of endogenous ATP in mitochondria. As a consequence, FME can be considered as a starting point to design efficient ATP sensors.
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Affiliation(s)
- Dmytro A Yushchenko
- Department of Chemistry, Kyiv National Taras Shevchenko University, 01033 Kyiv, Ukraine
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M'Baye G, Klymchenko AS, Yushchenko DA, Shvadchak VV, Ozturk T, Mély Y, Duportail G. Fluorescent dyes undergoing intramolecular proton transfer with improved sensitivity to surface charge in lipid bilayers. Photochem Photobiol Sci 2007; 6:71-6. [PMID: 17200740 DOI: 10.1039/b611699j] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
4'-(Dialkylamino)-3-hydroxyflavones are characterized by an excited-state proton transfer reaction between two tautomeric excited states, which results in two emission bands well separated on the wavelength scale. Due to the high sensitivity of the relative intensities of the two emission bands to solvent polarity, hydrogen bonding and local electric fields, these dyes found numerous applications in biomembrane studies. In order to further improve their fluorescence characteristics, we have synthesized new dyes where the 2-phenyl group is substituted with a 2-thienyl group. In organic solvents, the new dyes exhibit red shifted absorption and dual fluorescence. Although they show lower sensitivity to solvent polarity and H-bond donor ability (acidicity) than their parent 3-hydroxyflavone dyes, they exhibit a much higher sensitivity to solvent H-bond acceptor ability (basicity). Moreover, when tested in lipid vesicles of different surface charge, the new dyes show much better resolved dual emission and higher sensitivity to the surface charge of lipid bilayers than the parent dyes. The response of the new dyes to surface charge is probably connected with the H-bond basicity of the membrane surface, which is the highest for negatively charged surfaces. As a consequence, the new dyes appear as prospective fluorophores for the development of new fluorescent probes for biomembranes.
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Affiliation(s)
- Gora M'Baye
- Département de Pharmacologie et Physicochimie, Photophysique des Interactions Biomoléculaires, UMR 7175, Institut Gilbert Laustriat, 74 Route du Rhin, Université Louis Pasteur (Strasbourg I), BP 60024, 67401, Illkirch, France
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41
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Yushchenko DA, Shvadchak VV, Klymchenko AS, Duportail G, Mély Y, Pivovarenko VG. 2-Aryl-3-hydroxyquinolones, a new class of dyes with solvent dependent dual emission due to excited state intramolecular proton transfer. NEW J CHEM 2006. [DOI: 10.1039/b601400c] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Yushchenko DA, Shvadchak VV, Bilokin' MD, Klymchenko AS, Duportail G, Mély Y, Pivovarenko VG. Modulation of dual fluorescence in a 3-hydroxyquinolone dye by perturbation of its intramolecular proton transfer with solvent polarity and basicity. Photochem Photobiol Sci 2006; 5:1038-44. [PMID: 17077900 DOI: 10.1039/b610054f] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A representative of a new class of dyes with dual fluorescence due to an excited state intramolecular proton transfer (ESIPT) reaction, namely 1-methyl-2-(4-methoxy)phenyl-3-hydroxy-4(1H)-quinolone (QMOM), has been studied in a series of solvents covering a large range of polarity and basicity. A linear dependence of the logarithm of its two bands intensity ratio, log(I(N*)/I(T*)), upon the solvent polarity expressed as a function of the dielectric constant, (epsilon- 1)/(2epsilon + 1), is observed for a series of protic solvents. A linear dependence for log(I(N*)/I(T*)) is also found in aprotic solvents after taking into account the solvent basicity. In contrast, the positions of the absorption and the two emission bands of QMOM do not noticeably depend on the solvent polarity and basicity, indicating relatively small changes in the transition moment of QMOM upon excitation and emission. Time-resolved experiments in acetonitrile, ethyl acetate and dimethylformamide suggest an irreversible ESIPT reaction for this dye. According to the time-resolved data, an increase of solvent basicity results in a dramatic decrease of the ESIPT rate constant, probably due to the disruption of the intramolecular H-bond of the dye by the basic solvent. Due to this new sensor property, 3-hydroxyquinolones are promising candidates for the development of a new generation of environment-sensitive fluorescence dyes for probing interactions of biomolecules.
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Affiliation(s)
- Dmytro A Yushchenko
- Department of Chemistry, Kyiv National Taras Shevchenko University, 01033, Kyiv, Ukraine
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Klymchenko AS, Avilov SV, Demchenko AP. Resolution of Cys and Lys labeling of alpha-crystallin with site-sensitive fluorescent 3-hydroxyflavone dye. Anal Biochem 2005; 329:43-57. [PMID: 15136166 DOI: 10.1016/j.ab.2004.02.031] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2003] [Indexed: 11/20/2022]
Abstract
Ratiometric fluorescent probes based on 3-hydroxyflavone (3HF) are highly sensitive tools for studying polarity, hydration, electronic polarizability, and electrostatics in different microheterogeneous systems, including protein molecules. In the present work, a reactive derivative of 3HF, 6-bromomethyl-4'-diethylamino-3-hydroxyflavone, recently synthesized in our group, was applied to label covalently bovine lens alpha-crystallin. The labeling of SH and NH(2) groups are clearly distinguished by spectroscopic criteria. We observe that the NH(2) labeling creates the positive charge in the proximity to fluorophore, which results in strong internal Stark effect producing the shift in excitation spectrum by ca. 15 nm. Analysis of excitation-dependent fluorescence spectra allows separation of the emission profiles of these SH- and NH(2)-labeled species. Applying recently developed multiparametric analysis of the obtained emission spectra, we described the physicochemical properties of the sites of SH and NH(2) labeling in alpha-crystallin. The site of SH labeling has medium-low polarity (dielectric constant, epsilon = 4.9 +/- 0.9) is protic, and does not contain proximal aromatic residues (according to the obtained refractive index, n = 1.41 +/- 0.14). The site of NH(2) labeling is also of medium-low polarity. The novel label due to its two-wavelength ratiometric response and high sensitivity to the type of labeling may offer new possibilities in the studies of structure, dynamics, and interactions of proteins by probing their SH- and NH(2)-labeling sites.
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Affiliation(s)
- Andrey S Klymchenko
- Laboratoire de Pharmacologie et Physicochimie des intercations cellulaires et moléculaires, UMR 7034 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401, Illkirch, France
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Klymchenko AS, Mély Y. 7-(2-Methoxycarbonylvinyl)-3-hydroxychromones: new dyes with red shifted dual emission. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.09.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhu X, Bao L, Guo R, Wu J. Determination of aluminium(III) in water samples in a microemulsion system by spectrofluorimetry. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.06.067] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Shynkar VV, Mély Y, Duportail G, Piémont E, Klymchenko AS, Demchenko AP. Picosecond Time-Resolved Fluorescence Studies Are Consistent with Reversible Excited-State Intramolecular Proton Transfer in 4‘-(Dialkylamino)-3-hydroxyflavones. J Phys Chem A 2003. [DOI: 10.1021/jp035855n] [Citation(s) in RCA: 137] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vasyl V. Shynkar
- Laboratoire de Pharmacologie et Physicochimie des interactions cellulaires et moléculaires, UMR 7034 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401 Illkirch, France, Departments of Physics and Chemistry, Kyiv National Taras Shevchenko University, 01033 Kyiv, Ukraine, TUBITAK Research Institute for Genetic Engineering and Biotechnology, Gebze-Kocaeli 41470, Turkey, and A. V. Palladin Institute of Biochemistry, 9 Leontovicha str., 01030 Kyiv, Ukraine
| | - Yves Mély
- Laboratoire de Pharmacologie et Physicochimie des interactions cellulaires et moléculaires, UMR 7034 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401 Illkirch, France, Departments of Physics and Chemistry, Kyiv National Taras Shevchenko University, 01033 Kyiv, Ukraine, TUBITAK Research Institute for Genetic Engineering and Biotechnology, Gebze-Kocaeli 41470, Turkey, and A. V. Palladin Institute of Biochemistry, 9 Leontovicha str., 01030 Kyiv, Ukraine
| | - Guy Duportail
- Laboratoire de Pharmacologie et Physicochimie des interactions cellulaires et moléculaires, UMR 7034 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401 Illkirch, France, Departments of Physics and Chemistry, Kyiv National Taras Shevchenko University, 01033 Kyiv, Ukraine, TUBITAK Research Institute for Genetic Engineering and Biotechnology, Gebze-Kocaeli 41470, Turkey, and A. V. Palladin Institute of Biochemistry, 9 Leontovicha str., 01030 Kyiv, Ukraine
| | - Etienne Piémont
- Laboratoire de Pharmacologie et Physicochimie des interactions cellulaires et moléculaires, UMR 7034 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401 Illkirch, France, Departments of Physics and Chemistry, Kyiv National Taras Shevchenko University, 01033 Kyiv, Ukraine, TUBITAK Research Institute for Genetic Engineering and Biotechnology, Gebze-Kocaeli 41470, Turkey, and A. V. Palladin Institute of Biochemistry, 9 Leontovicha str., 01030 Kyiv, Ukraine
| | - Andrey S. Klymchenko
- Laboratoire de Pharmacologie et Physicochimie des interactions cellulaires et moléculaires, UMR 7034 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401 Illkirch, France, Departments of Physics and Chemistry, Kyiv National Taras Shevchenko University, 01033 Kyiv, Ukraine, TUBITAK Research Institute for Genetic Engineering and Biotechnology, Gebze-Kocaeli 41470, Turkey, and A. V. Palladin Institute of Biochemistry, 9 Leontovicha str., 01030 Kyiv, Ukraine
| | - Alexander P. Demchenko
- Laboratoire de Pharmacologie et Physicochimie des interactions cellulaires et moléculaires, UMR 7034 du CNRS, Faculté de Pharmacie, Université Louis Pasteur, 67401 Illkirch, France, Departments of Physics and Chemistry, Kyiv National Taras Shevchenko University, 01033 Kyiv, Ukraine, TUBITAK Research Institute for Genetic Engineering and Biotechnology, Gebze-Kocaeli 41470, Turkey, and A. V. Palladin Institute of Biochemistry, 9 Leontovicha str., 01030 Kyiv, Ukraine
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