1
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Qiao T, Shi W, Zhuang H, Zhao G, Xin X, Li Y. Effects of substitution and conjugation on photophysical properties of ESIPT-based fluorophores with the core of 4-aminophthalimide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 309:123802. [PMID: 38184881 DOI: 10.1016/j.saa.2023.123802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/09/2024]
Abstract
4-Aminophthalimide is a highly fluorescent signaling unit with excellent photophysical properties and wide application foregrounds. Based on this, a range of theoretical investigations are conducted on the fluorescent probe (E)-5-((2-hydroxybenzylidene) amino) isoindoline-1, 3-dione (HID) with the core of 4-aminophthalimide using density functional theory (DFT) and time-containing density functional theory (TD-DFT) methods in this paper. The optimized configurations, vertical excitation and emission energies, electronic characteristics and excited-state intramolecular proton transfer (ESIPT) behaviors of the probe HID are discussed in detail. Furthermore, to enhance the luminescent properties of HID, five novel compounds have been designed based on the structure of HID by introducing amino, methoxy and naphthalene groups (-NH2, -OMe and C10H8). Our work thoroughly explores how the property and position of substituents and conjugation affect photophysical characteristics and ESIPT processes. We find that the ESIPT dynamics can be modulated by the substitution and conjugation effects. Specifically, the introduction of amino and methoxy groups at the ortho-position and the introduction of the naphthalene group promote the ESIPT behavior of HID1, whereas the introduction of amino and methoxy groups at the meta-position exhibits the contrary impact. Therefore, we boldly infer that the introduction of electron-donating groups in the ortho-position and the introduction of the conjugated group make the ESIPT process more effortless to occur, whereas the introduction of substituents with opposing natures in the meta-position makes the ESIPT process more difficult to occur. In addition, the ionization potentials (IP), electron affinities (EA) and reorganization energies (λh and λe) of molecules are calculated to assess their potential as luminescent materials. Our work not only reveals the luminescence and ESIPT mechanism of the probe HID1, but also proposes to modulate the ESIPT process through the substitution and conjugation effects. In particular, the designed molecules have better photoelectric properties as a result of their red-shifted absorption and fluorescence spectra, smaller energy gaps, larger transferred charges and greater charge transferred distances, which offers some valuable ideas for the experimental development of more efficient organic luminescent materials with ESIPT properties.
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Affiliation(s)
- Tiantian Qiao
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Wei Shi
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Hongbin Zhuang
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Guijie Zhao
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Xin Xin
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Yongqing Li
- School of Physics, Liaoning University, Shenyang 110036, PR China.
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2
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Lamas I, Montero R, Martínez-Martínez V, Longarte A. Photodynamics of azaindoles in polar media: the influence of the environment. Phys Chem Chem Phys 2024; 26:3240-3252. [PMID: 38193884 DOI: 10.1039/d3cp03412g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
We have studied the relaxation dynamics of a family of azaindole (AI) structural isomers, 4-, 5-, 6- and 7-AI, by steady-state and time-resolved methods (fs-transient absorption and fluorescence up-conversion), in solvents of different polarity. The measurements in aprotic solvents show distinctive fluorescence yields and excited state lifetimes among the isomers, which are tuned by the polarity of the medium. Guided by simple TD-DFT calculations and based on the behavior observed in the isolated species, it has been possible to address the influence of the environment polarity on the relaxation route. According to the obtained picture, the energy of the nπ* state, which is strongly dependent on the position of the pyridinic nitrogen, controls the rate of the internal conversion channel that accounts for the distinctive photophysical behavior of the isomers. On the other hand, preliminary measurements in protic media (methanol) show a very different photodynamical behavior, in which the anomalous measured fluorescent patterns are very likely the result of reactive channels (proton transfer) triggered by the electronic excitation.
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Affiliation(s)
- Iker Lamas
- Departamento de Química-Física Facultad de Ciencia y Tecnología. Universidad del País Vasco (UPV/EHU) Apart. 644, 48080 Bilbao, Spain.
| | - Raúl Montero
- SGIKER Laser Facility Facultad de Ciencia y Tecnología. Universidad del País Vasco (UPV/EHU) 48940, Leioa, Spain.
| | - Virginia Martínez-Martínez
- Departamento de Química-Física Facultad de Ciencia y Tecnología. Universidad del País Vasco (UPV/EHU) Apart. 644, 48080 Bilbao, Spain.
| | - Asier Longarte
- Departamento de Química-Física Facultad de Ciencia y Tecnología. Universidad del País Vasco (UPV/EHU) Apart. 644, 48080 Bilbao, Spain.
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3
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Nakanishi T, Hori Y, Shigeta Y, Sato H, Kiyanagi R, Munakata K, Ohhara T, Okazawa A, Shimada R, Sakamoto A, Sato O. Development of an Iron(II) Complex Exhibiting Thermal- and Photoinduced Double Proton-Transfer-Coupled Spin Transition in a Short Hydrogen Bond. J Am Chem Soc 2023; 145:19177-19181. [PMID: 37623927 DOI: 10.1021/jacs.3c06323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
Multiple proton transfer (PT) controllable by external stimuli plays a crucial role in fundamental chemistry, biological activity, and material science. However, in crystalline systems, controlling multiple PT, which results in a distinct protonation state, remains challenging. In this study, we developed a novel tridentate ligand and iron(II) complex with a short hydrogen bond (HB) that exhibits a PT-coupled spin transition (PCST). Single-crystal X-ray and neutron diffraction measurements revealed that the positions of the two protons in the complex can be controlled by temperature and photoirradiation based on the thermal- and photoinduced PCST. The obtained results suggest that designing molecules that form short HBs is a promising approach for developing multiple PT systems in crystals.
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Affiliation(s)
- Takumi Nakanishi
- Institute for Materials Chemistry and Engineering & IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yuta Hori
- Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8577, Japan
| | - Yasuteru Shigeta
- Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8577, Japan
| | - Hiroyasu Sato
- Rigaku Corporation, 3-9-12 Matsubaracho, Akishima, Tokyo 196-8666, Japan
| | - Ryoji Kiyanagi
- J-PARC center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Koji Munakata
- J-PARC center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Takashi Ohhara
- J-PARC center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Atsushi Okazawa
- Department of Electrical Engineering and Bioscience, Waseda University, Okubo 3-4-1, Shinjuku-ku, Tokyo, 169-8555, Japan
| | - Rintaro Shimada
- Graduate School of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
| | - Akira Sakamoto
- Graduate School of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5258, Japan
| | - Osamu Sato
- Institute for Materials Chemistry and Engineering & IRCCS, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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4
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Baweja S, Kalal B, Kumar Mitra P, Maity S. Competing Excited-State Hydrogen and Proton-Transfer Processes in 6-Azaindole-S 3,4 and 2,6-Diazaindole-S 3,4 Clusters (S=H 2 O, NH 3 ). Chemphyschem 2023:e202300270. [PMID: 37671972 DOI: 10.1002/cphc.202300270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 09/07/2023]
Abstract
Excited state hydrogen (ESHT) and proton (ESPT) transfer reaction pathways in the three and four solvent clusters of 6-azaindole (6AI-S3,4 ) and 2,6-diazaindole (26DAI-S3,4 )(S=H2 O, NH3 ) were computationally investigated to understand the fate of photo-excited biomolecules. The ESHT energy barriers in (H2 O)3 complexes (39.6-41.3 kJmol-1 ) were decreased in (H2 O)4 complexes (23.1-20.2 kJmol-1 ). Lengthening the solvent chain lowered the barrier because of the relaxed transition states geometries with reduced angular strains. Replacing the water molecule with ammonia drastically decreased the energy barriers to 21.4-21.3 kJmol-1 in (NH3 )3 complexes and 8.1-9.5 kJ mol-1 in (NH3 )4 complexes. The transition states were identified as Ha atom attached to the first solvent molecule. The formation of stronger hydrogen bonds in (NH3 )3,4 complexes resulted in facile ESHT reaction than that in the (H2 O)3,4 complexes. The ESPT energy barriers in 6AI-S3,4 and 26DAI-S3,4 were found to range between 40-73 kJmol-1 . The above values were significantly higher than that of the ESHT processes and hence are considered as a minor channel in the process. The effect of N(2) insertion was explored for the very first time in the isolated solvent clusters using local vibrational mode analysis. In DAI-S4 , the higher Ka (Ha ⋯Sa ) values depicted the increased photoacidity of the N(1)-Ha group which may facilitate the hydrogen transfer reaction. However, the increased N(6)⋯Hb bond length elevated the reaction barriers. Therefore, in the ESHT reaction channel, the co-existence of two competing factors led to a marginal/no change in the overall energy barriers due to the N(2) insertion. In the ESPT reaction pathway, the energy barriers showed notable increase upon N(2) insertion because of the increased N(6)⋯Hb bond length.
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Affiliation(s)
- Simran Baweja
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284, India
| | - Bhavika Kalal
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284, India
| | - Prajoy Kumar Mitra
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284, India
| | - Surajit Maity
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502284, India
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5
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Li Y, Lan Y, Zheng X, Zhao Y. Insights into Wavelength-Mediated Excited State Intramolecular Proton Transfer in Solution: UV Resonance Raman Spectroscopy and Theoretical Calculation. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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6
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Demchenko AP. Proton transfer reactions: from photochemistry to biochemistry and bioenergetics. BBA ADVANCES 2023. [DOI: 10.1016/j.bbadva.2023.100085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023] Open
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Yu SH, Yang CP, Mai FD, Tsai HY, Liu YC. Preparation of pure active water for auto-catalytic reactions performed in it. NANOSCALE 2023; 15:3919-3930. [PMID: 36723258 DOI: 10.1039/d3nr00021d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In catalyzed electrochemical reactions, a general strategy is to modify electrode materials to increase the efficiency of the reaction. From the viewpoint of environmental protection, electrochemical reactions should be performed in an inert green water phase. In this study, we report active pure liquid water (named PV), which was collected from the condensed vapor of heated gold (Au)-containing plasmon-activated water (PAW) with a distinct structure of electron-doping and reduced hydrogen bonding (HB). The resulting PV also exhibited distinct properties of the formation of stronger intermolecular HB with alcohols, and notable activities in catalytic electrochemical reactions, compared to bulk deionized water (DIW). Moreover, the measured diffusion coefficients of water increased by ca. 30% in PV solutions. Two typical electrochemical reactions significantly increased peak currents observed in oxidation-reduction cycles (ORCs) with roughening of the Au substrate and in a model of reversible oxidation-reduction reactions on a platinum (Pt) substrate. Also, PV enhanced hydrogen evolution reactions (HERs) on catalytic Pt and inert stainless steel substrates in PV-based solutions at different pH values, compared to DIW. Moreover, these activities of PV were more marked, even better than those of PAW, when PV was collected under a higher heating rate used to heat PAW. Active pure PV has emerged as a promising green solvent applicable to various chemical reactions with more efficiency.
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Affiliation(s)
- Shih-Hao Yu
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, No. 250, Wuxing St., Taipei 11031, Taiwan.
| | - Chih-Ping Yang
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, No. 250, Wuxing St., Taipei 11031, Taiwan.
| | - Fu-Der Mai
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, No. 250, Wuxing St., Taipei 11031, Taiwan.
| | - Hui-Yen Tsai
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, No. 250, Wuxing St., Taipei 11031, Taiwan.
| | - Yu-Chuan Liu
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, No. 250, Wuxing St., Taipei 11031, Taiwan.
- Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
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8
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A 12-Connected [Y 4(( μ3-OH) 4] 8+ Cluster-Based Luminescent Metal-Organic Framework for Selective Turn-on Detection of F - in H 2O. Molecules 2023; 28:molecules28041893. [PMID: 36838884 PMCID: PMC9960892 DOI: 10.3390/molecules28041893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/09/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023] Open
Abstract
Fluoride ion (F-) is one of the most hazardous elements in potable water. Over intake of F- can give rise to dental fluorosis, kidney failure, or DNA damage. As a result, developing affordable, equipment-free and credible approaches for F- detection is an important task. In this work, a new three dimensional rare earth cluster-based metal-organic framework assembled from lanthanide Y(III) ion, and a linear multifunctional ligand 3-nitro-4,4'-biphenyldicarboxylic acid, formulated as {[Y(μ3-OH)]4[Y(μ3-OH)(μ2-H2O)0.25(H2O)0.5]4[μ4-nba]8}n (1), where H2nba = 3-nitro-4,4'-biphenyldicarboxylic acid, has been hydrothermally synthesized and characterized through infrared spectroscopy (IR), elemental and thermal analysis (EA), power X-ray diffraction (PXRD), and single-crystal X-ray diffraction (SCXRD) analyses. X-ray diffraction structural analysis revealed that 1 crystallizes in tetragonal system with P4¯21m space group, and features a 3D framework with 1D square 18.07(3)2 Å2 channels running along the [0,0,1] or c-axis direction. The structure of 1 is built up of unusual eight-membered rings formed by two types of {Y4O4} clusters connected to each other via 12 μ4-nba2- and 4 μ3-OH- ligands. Three crystallographic independent Y3+ ions display two coordinated configurations with a seven-coordinated distorted monocapped trigonal-prism (YO7) and an eight-coordinated approximately bicapped trigonal-prism (YO8). 1 is further stabilized through O-H⋯O, O-H⋯N, C-H⋯O, and π⋯π interactions. Topologically, MOF 1 can be simplified as a 12-connected 2-nodal Au4Ho topology with a Schläfli symbol {420·628·818}{43}4 or a 6-connected uninodal pcu topology with a Schläfli symbol {412·63}. The fluorescent sensing application of 1 was investigated to cations and anions in H2O. 1 exhibits good luminescence probing turn-on recognition ability toward F- and with a limit detection concentration of F- down to 14.2 μM in aqueous solution (Kec = 11403 M-1, R2 = 0.99289, σ = 0.0539). The findings here provide a feasible detection platform of LnMOFs for highly sensitive discrimination of F- in aqueous media.
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Roy Chowdhury P, Khodia S, Maity S. Solvent assisted excited-state deactivation pathways in isolated 2,7-diazaindole-S 1-3 (S = Water and Ammonia) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 278:121285. [PMID: 35533603 DOI: 10.1016/j.saa.2022.121285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 04/13/2022] [Accepted: 04/16/2022] [Indexed: 06/14/2023]
Abstract
The role of solvent molecules in the deactivation of photo-excited 2,7-diazaindole (DAI) - (H2O)1-3 and DAI - (NH3)1-3 complexes were computationally investigated. An excited-state proton transfer (ESPT) path from the solvent to the DAI molecule was followed using the TD-DFT-D4 (B3LYP) level of theory. The computed potential energy profile of ESPT process has shown intersection between ππ* and nπ* states facilitated via relative stabilization of the nπ* state with decreasing N(7)-Hb bond length. The ESPT process, starting from the DAI-Sn (ππ*) state, crosses through a barrier ranging from 27 to 36 kJmol-1 for water complexes and 26-30 kJmol-1 for ammonia complexes. The energy of the excited state was rapidly decreased with a shorter N(7)-Hb bond length. Subsequently, a significant trend of finding a second intersection between the ground and the excited state was observed for all the complexes. The results firmly suggested a significant deactivation channel of excited azaindole derivatives. In the present system, two competing channels, ESPT and ESHT, were found to be energetically accessible. The energy barriers associated with the ESPT barriers for DAI-(H2O)1-3 complexes are similar to the ESHT barrier, depicting equal dominance of both processes. The increased basicity of the N(7) atom in the excited state resulted a facile ESPT process from the water to N(7) of the DAI molecule. However, DAI-(NH3)1-3 complexes show clear preference for ESHT over ESPT process owing to its higher gas-phase pKa value making it a poor proton donor. The above systems can be used as a model to computationally and experimentally investigate the competing radiative and deactivation pathways of photo-excited solvated complexes of N-H-bearing bio-relevant molecules via proton and hydrogen transfer reactions.
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Affiliation(s)
| | - Saurabh Khodia
- Department of Chemistry, IIT Hyderabad, Kandi, Sangareddy, Telangana 502285, India
| | - Surajit Maity
- Department of Chemistry, IIT Hyderabad, Kandi, Sangareddy, Telangana 502285, India.
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Yang WY, Yan CC, Wang XD, Liao LS. Recent progress on the excited-state multiple proton transfer process in organic molecules. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1375-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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11
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Fu CB, Qu JJ, Yu XF, Cheng JB, Li Q. Triple proton transfer after water rearrangement in (2,6-aza)Ind·(H2O)2. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Li Z, Tang Z, Li W, Zhan H, Liu X, Wang Y, Tian J, Fei X. Substituents effect on the methanol-assisted excited-state intermolecular proton transfer of 7-Aminoquinoline: A theoretical study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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13
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Yan X, Li YP, Lei J, Wang Y, Li SN, Zhai QG. Introduction of continuous excited-state intermolecular proton transfer process into open yttrium-terephthalate framework for ratiometric fluorescent fluorion detection. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122212] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Yang Y, Luo X, Ma F, Li Y. Substituent effect on ESIPT mechanisms and photophysical properties of HBT derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 250:119375. [PMID: 33421666 DOI: 10.1016/j.saa.2020.119375] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 12/05/2020] [Accepted: 12/20/2020] [Indexed: 06/12/2023]
Abstract
Substituent effects on excited-state intramolecular proton transfer (ESIPT) and photophysical properties of 2-(2-Hydroxyphenyl) benzothiazole (HBT) derivatives have been theoretically unveiled via the density functional theory (DFT) and time-dependent DFT (TDDFT). The optimized geometrical configurations and normal mode analyses confirm that the proton transfer processes are more reactive in excited state. Through calculating the activation energies and rate constants of ESIPT processes, finding that the processes are increasingly inactive when substituent group changes from -CN, -CO2Me, -Cl, -Me, -NMe2 to -NO2. In addition, the photophysical properties analyses indicate the vertical transition energies are in good agreement with those observed in experiment. Note that all the absorption and emission maxima of enol and keto forms have the significant red-shift. In order to clarify the substituent effect on ESIPT and photophysical properties, we draw the frontier molecular orbitals (FMOs) isosurfaces and calculate the distances of electrons and holes and atomic charges. It follows that the intramolecular charge transfer (ICT) degrees are increasingly enlarged as substituting from -CN, -CO2Me, -Cl, -Me, -NMe2 to -NO2 groups, which not only causes the red-shift of absorption and emission of enol and keto forms, but also affects the charge distribution of proton donor and acceptor, inhibiting the occurrence of ESIPT processes.
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Affiliation(s)
- Yunfan Yang
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, PR China; School of Physics, Liaoning University, Shenyang 110036, PR China.
| | - Xiao Luo
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Fengcai Ma
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Yongqing Li
- School of Physics, Liaoning University, Shenyang 110036, PR China.
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Dong H, Liu X, Yang H, Zhao J, Zheng Y. Harnessing Excited-State Proton Transfer Reaction for 2-(6′-Hydroxy-2′-pyridyl)benzimidazole via Solvents. ACS APPLIED BIO MATERIALS 2021; 4:1950-1957. [DOI: 10.1021/acsabm.0c01579] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hao Dong
- School of Physics, Shandong University, Jinan 250100, China
| | - Xiaoyan Liu
- School of Physics, Shandong University, Jinan 250100, China
| | - Huan Yang
- School of Physics, Shandong University, Jinan 250100, China
| | - Jinfeng Zhao
- School of Physics, Shandong University, Jinan 250100, China
| | - Yujun Zheng
- School of Physics, Shandong University, Jinan 250100, China
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16
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Huang F, An B, Jiang Y, Dun S, Zhang J, Guo X. Theoretical investigation of excited-state proton transfer (ESPT) for 2,5-bis(2-benzothiazolyl)hydroquinone: single or double? Mol Phys 2019. [DOI: 10.1080/00268976.2019.1705413] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Fuhua Huang
- Institute of Upconversion Nanoscale Materials, Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloy, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, People’s Republic of China
| | - Beibei An
- Institute of Upconversion Nanoscale Materials, Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloy, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, People’s Republic of China
| | - Yumiao Jiang
- Institute of Upconversion Nanoscale Materials, Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloy, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, People’s Republic of China
| | - Shuopan Dun
- Institute of Upconversion Nanoscale Materials, Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloy, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, People’s Republic of China
| | - Jinglai Zhang
- Institute of Upconversion Nanoscale Materials, Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloy, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, People’s Republic of China
| | - Xugeng Guo
- Institute of Upconversion Nanoscale Materials, Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloy, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, People’s Republic of China
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17
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Chao WC, Lu JF, Wang JS, Chiang TH, Lin LJ, Lee YL, Chou PT. Unveiling the structural features of nonnative trimers of human superoxide dismutase 1. Biochim Biophys Acta Gen Subj 2019; 1864:129483. [PMID: 31734464 DOI: 10.1016/j.bbagen.2019.129483] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 10/16/2019] [Accepted: 10/29/2019] [Indexed: 01/21/2023]
Abstract
BACKGROUND Human SOD1 contains a single tryptophan residue (W32) which has been identified as a site of oxidative modification and a potentiator of aggregation involving in familial amyotrophic lateral sclerosis (fALS). In situ substitution of a tryptophan analog, 2,6-diazatryptophan ((2,6-aza)Trp) with its unique water-catalyzed proton transfer property, into proteins exhibits extraordinary sensitivity in the detection of subtle water-associated structural changes with only a few micro-molar concentration of samples. METHODS A combination of size-exclusion chromatography and water-catalyzed fluorescent emission was utilized to probe the structural features of metastable SOD1 nonnative trimers, the potential neurotoxic species in the fALS. RESULTS The monomer of apo-A4V SOD1 exhibits variable conformations and the fastest trimeric formation rate compared to that of wild type and I113T. The trimeric A4V SOD1 exhibits the least water molecules surrounding the W32, while I113T and the wild type appear to have more water molecules in the proximity of W32. A small molecule stabilizer, 5-fluorouridine, effects the structural conformation of SOD1 nonnative trimers. CONCLUSIONS Our studies unveil new insights into water-associated structural changes of SOD1 nonnative trimers and demonstrate that in situ incorporation of (2,6-aza)Trp is a sensitive and powerful tool for probing subtle changes of water environments during protein aggregation. GENERAL SIGNIFICANCE The water-sensitive probe, (2,6-aza)Trp, demonstrates superior sensitivity for detecting modulation of water microsolvation, structural conformation during oligomer formation and 5FUrd binding to both wild type and mutant SOD1.
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Affiliation(s)
- Wei-Chih Chao
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Jyh-Feng Lu
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Jinn-Shyan Wang
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan.
| | - Tzu-Hsuan Chiang
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Li-Ju Lin
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Yao-Lin Lee
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan
| | - Pi-Tai Chou
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan
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18
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Chang K, Liu Y, Liu J, Peng Y, Yang Y, Li Z, Jheng R, Chao C, Liu K, Chou P. Catalytic‐Type Excited‐State N−H Proton‐Transfer Reaction in 7‐Aminoquinoline and Its Derivatives. Chemistry 2019; 25:14972-14982. [DOI: 10.1002/chem.201904027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Kai‐Hsin Chang
- Department of ChemistryNational (Taiwan) University Taipei 10617 Taiwan) (R.O.C
| | - Ying‐Hsuan Liu
- Department of ChemistryNational (Taiwan) University Taipei 10617 Taiwan) (R.O.C
| | - Jiun‐Chi Liu
- Department of ChemistryNational (Taiwan) University Taipei 10617 Taiwan) (R.O.C
| | - Yu‐Chiang Peng
- Department of Medical Applied ChemistryChung Shan Medical University andDepartment of Medical EducationChung Shan Medical University Hospital Taichung 40201 Taiwan) (R.O.C
| | - Yu‐Hsuan Yang
- Department of Medical Applied ChemistryChung Shan Medical University andDepartment of Medical EducationChung Shan Medical University Hospital Taichung 40201 Taiwan) (R.O.C
| | - Zhi‐Bin Li
- Department of Medical Applied ChemistryChung Shan Medical University andDepartment of Medical EducationChung Shan Medical University Hospital Taichung 40201 Taiwan) (R.O.C
| | - Ren‐Hua Jheng
- Department of Medical Applied ChemistryChung Shan Medical University andDepartment of Medical EducationChung Shan Medical University Hospital Taichung 40201 Taiwan) (R.O.C
| | - Chi‐Min Chao
- Department of Medical Applied ChemistryChung Shan Medical University andDepartment of Medical EducationChung Shan Medical University Hospital Taichung 40201 Taiwan) (R.O.C
| | - Kuan‐Miao Liu
- Department of Medical Applied ChemistryChung Shan Medical University andDepartment of Medical EducationChung Shan Medical University Hospital Taichung 40201 Taiwan) (R.O.C
| | - Pi‐Tai Chou
- Department of ChemistryNational (Taiwan) University Taipei 10617 Taiwan) (R.O.C
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19
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Hong DL, Luo YH, He XT, Zheng ZY, Su S, Wang JY, Wang C, Chen C, Sun BW. Unraveling the Mechanisms of the Excited-State Intermolecular Proton Transfer (ESPT) for a D-π-A Molecular Architecture. Chemistry 2019; 25:8805-8812. [PMID: 31054168 DOI: 10.1002/chem.201900856] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 04/25/2019] [Indexed: 11/10/2022]
Abstract
Precise revealing the mechanisms of excited-state intermolecular proton transfer (ESPT) and the corresponding geometrical relaxation upon photoexcitation and photoionization remains a formidable challenge. In this work, the compound (E)-4-(((4H-1,2,4-triazol-4-yl)imino)methyl)-2,6-dimethoxyphenol (TIMDP) adopting a D-π-A molecular architecture featuring a significant intramolecular charge transfer (ICT) effect has been designed. With the presence of perchloric acid (35 %), TIMDP can be dissolved through the formation of a HClO4 -H2 O-OH(TIMDP)-N(TIMDP) hydrogen-bonding bridge. At the ground state, the ICT effect is dominant, giving birth to crystals of TIMDP. Upon external stimuli (e.g., UV light irradiation, electro field), the excited state is achieved, which weakens the ICT effect, and significantly promotes the ESPT effect along the hydrogen-bonding bridge, resulting in crystals of [HTIMDP]+ ⋅[H2 O]⋅[ClO4 ]- . As a consequence, the mechanisms of the ESPT can be investigated, which distorted the D-π-A molecular architecture, tuned the emission color with the largest Stokes shift of 242 nm, and finally, high photoluminescence quantum yields (12 %) and long fluorescence lifetimes (8.6 μs) have achieved. These results not only provide new insight into ESPT mechanisms, but also open a new avenue for the design of efficient ESPT emitters.
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Affiliation(s)
- Dan-Li Hong
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, P.R. China
| | - Yang-Hui Luo
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, P.R. China
| | - Xiao-Tong He
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, P.R. China
| | - Zi-Yue Zheng
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, P.R. China
| | - Shan Su
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, P.R. China
| | - Jia-Ying Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, P.R. China
| | - Cong Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, P.R. China
| | - Chen Chen
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, P.R. China
| | - Bai-Wang Sun
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, P.R. China
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20
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Yang CP, Hong CT, Mai FD, Tsai HY, Liu YC. Increasing electrochemical reaction rates using treated water with reduced hydrogen bonds. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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21
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Li YP, Zhu XH, Li SN, Jiang YC, Hu MC, Zhai QG. Highly Selective and Sensitive Turn-Off-On Fluorescent Probes for Sensing Al 3+ Ions Designed by Regulating the Excited-State Intramolecular Proton Transfer Process in Metal-Organic Frameworks. ACS APPLIED MATERIALS & INTERFACES 2019; 11:11338-11348. [PMID: 30834744 DOI: 10.1021/acsami.8b20410] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The concept of high-performance excited-state intramolecular proton transfer (ESIPT)-based fluorescent metal-organic framework (MOF) probes for Al3+ is proposed in this work. By regulating the hydroxyl groups on the organic linker step by step, new fluorescent magnesium-organic framework (Mg-MOF) probes for Al3+ ions were established based on the ESIPT fluorescence mechanism. It is observed for the first time that the number of intramolecular hydrogen bonds between adjacent hydroxyl and carboxyl groups can effectively adjust the ESIPT process and lead to tunable fluorescence sensing performance. Together with the well-designed porous and anionic framework, the Mg-TPP-DHBDC probe decorating with a pair of intramolecular hydrogen bonds exhibits extra-high quantitative fluorescence response to Al3+ through an unusual turn-off (0-1.2 μM) and turn-on (4.2-15 μM) luminescence sensing mechanism. Notably, the 28 nM limit of detection value represents the lowest record among all reported MOF-based Al3+ fluorescent sensors up to now. Benefited from the unique turn-off-on ESIPT fluorescence detection process, the Mg-TPP-DHBDC MOF sensor exhibits single Al3+ detection compared with other 16 common metal ions including Ga3+, In3+, Fe3+, Cr3+, Ca2+, and Mg2+. Impressively, such an Al3+ selective sensing process can even be fulfilled by the reusable MOF test paper detected by naked eyes. Overall, the quantitative Al3+ detection, together with the extraordinary sensitivity, selectivity, fast response, and good reusability, strongly supports our concept of ESIPT-based fluorescent MOF Al3+ probes and makes Mg-TPP-DHBDC one of the most powerful Al3+ fluorescent sensors.
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Affiliation(s)
- Yong-Peng Li
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education , Shaanxi Normal University , Xi'an , Shaanxi 710062 , P. R. China
| | - Xiao-Han Zhu
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education , Shaanxi Normal University , Xi'an , Shaanxi 710062 , P. R. China
| | - Shu-Ni Li
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education , Shaanxi Normal University , Xi'an , Shaanxi 710062 , P. R. China
| | - Yu-Cheng Jiang
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education , Shaanxi Normal University , Xi'an , Shaanxi 710062 , P. R. China
| | - Man-Cheng Hu
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education , Shaanxi Normal University , Xi'an , Shaanxi 710062 , P. R. China
| | - Quan-Guo Zhai
- School of Chemistry & Chemical Engineering, Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education , Shaanxi Normal University , Xi'an , Shaanxi 710062 , P. R. China
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22
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Zhao J, Dong H, Yang H, Zheng Y. Solvent-Polarity-Dependent Excited-State Behavior and Thermally Active Delayed Fluorescence for Triquinolonobenzene. ACS APPLIED BIO MATERIALS 2019; 2:2060-2068. [DOI: 10.1021/acsabm.9b00088] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jinfeng Zhao
- School of Physics, Shandong University, Jinan 250100, China
| | - Hao Dong
- School of Physics, Shandong University, Jinan 250100, China
| | - Huan Yang
- School of Physics, Shandong University, Jinan 250100, China
| | - Yujun Zheng
- School of Physics, Shandong University, Jinan 250100, China
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23
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Yang D, Yang G, Jia M, Song X, Zhang Q, Zhang T. Excited state hydrogen bond and proton transfer mechanism for (2‑hydroxy‑4‑methoxyphenyl)(phenyl)‑methanone azine: A theoretical investigation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 210:159-164. [PMID: 30453191 DOI: 10.1016/j.saa.2018.11.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 11/10/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
A novel fluorescence molecule (2‑hydroxy‑4‑methoxyphenyl)(phenyl)‑methanone azine (HMPM) has been explored theoretically in this present work. Based on density functional theory (DFT) and time-dependent density functional theory (TDDFT) methods, we investigate the excited state hydrogen bonding behaviors and excite state intramolecular proton transfer (ESIPT) process for HMPM molecule. Via simulating the reduced density gradient (RDG) versus sign(λ2)ρ, we firstly verify the double intramolecular hydrogen bonds (O1H2⋯N3 and O4H5⋯N6) for HMPM system. Comparing with the changes about these two hydrogen bonds (i.e., bond distances, bond angles and infrared (IR) vibrational spectra), we find that they should be enhanced in the first excited state upon the photo-excitation. The shortened hydrogen bonding distance of H2⋯N3 and H5⋯N6 provide the possibility for ESIPT reaction. Given the photo-excitation process, we confirm the charge redistribution around the hydrogen bonding moieties plays an important role as a driving force for the ESIPT process. Further, via constructing S0-state and S1-state potential energy surfaces (PESs), we confirm the excited state double proton transfer (ESDPT) is excludable since the high optimized energy and high potential energy barrier. While the low potential barrier for excited state single proton transfer path results in the ultrafast ESIPT reaction, which explains why the initial HMPM fluorescence peak cannot be detected in previous experimental phenomenon. This work not only clarifies the excited state dynamical behavior for HMPM system, but also explains previous experimental phenomenon and attributions about steady state spectra. We hope this work can facilitate novel applications based on the novel HMPM system in future.
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Affiliation(s)
- Dapeng Yang
- College of Physics and Electronics, North China University of Water Resources and Electric Power, Zhengzhou 450046, PR China; State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China.
| | - Guang Yang
- Basic Teaching Department, Jiaozuo University, Jiaozuo 454000, PR China
| | - Min Jia
- College of Physics and Electronics, North China University of Water Resources and Electric Power, Zhengzhou 450046, PR China
| | - Xiaoyan Song
- College of Physics and Electronics, North China University of Water Resources and Electric Power, Zhengzhou 450046, PR China
| | - Qiaoli Zhang
- College of Physics and Electronics, North China University of Water Resources and Electric Power, Zhengzhou 450046, PR China
| | - Tianjie Zhang
- College of Physics and Electronics, North China University of Water Resources and Electric Power, Zhengzhou 450046, PR China
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24
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Liu LY, Wu SS, Yu J, Chai S, Cong SL. Theoretical insights into excited-state intramolecular and multiple intermolecular hydrogen bonds in 2-(2-Hydroxy-phenyl)-4(3H)-quinazolinone. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 207:61-67. [PMID: 30195187 DOI: 10.1016/j.saa.2018.08.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 08/12/2018] [Accepted: 08/26/2018] [Indexed: 06/08/2023]
Abstract
The photophysical properties and photochemistry reactions of 2-(2-Hydroxy-phenyl)-4(3H)-quinazolinone (HPQ) system in different solutions are studied by using density functional theory (DFT) and time-dependent density functional theory (TDDFT) methods. Our theoretical investigation explores that an ultrafast barrier-free excited state intramolecular proton transfer (ESIPT) process occurs and the configuration twisting is found in the electronic excited state. In the polar protic methanol solution, the hydrogen-bonded complex composed by HPQ and two methanol molecules (HPQ-2M) could exist stably in the ground state. Upon photoexcitation the isolated HPQ is initially excited to the first excited state, while the HPQ-2M system is firstly excited to the S3 state and undergoes internal conversion (IC) to the S1 state. The intermolecular hydrogen bonds are strengthened in the excited state. The simulated electronic spectra agree well with the experimental results. The strengthening of the intermolecular hydrogen bonds is also confirmed by the calculated vibrational spectra. In addition, the intramolecular charge transfer happens in both HPQ and HPQ-2M systems from the frontier molecular orbital analysis.
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Affiliation(s)
- Li-Yan Liu
- School of Physics, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Shuai-Shuai Wu
- School of Physics, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Jie Yu
- School of Physics, Dalian University of Technology, Dalian 116024, People's Republic of China
| | - Shuo Chai
- School of Physics, Dalian University of Technology, Dalian 116024, People's Republic of China; State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China.
| | - Shu-Lin Cong
- School of Physics, Dalian University of Technology, Dalian 116024, People's Republic of China
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25
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Wang R, Ding J, Zhang Y. Naphthalimide/benzimide-based excited-state intramolecular proton transfer active luminogens: aggregation-induced enhanced emission and potential for chemical modification. NEW J CHEM 2019. [DOI: 10.1039/c9nj01685f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two ESIPT- and AIEE-active molecules, HPIBT, which is superior to HNIBT, and HPIBT-yl can be further modified through high-efficiency click chemistry.
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Affiliation(s)
- Rong Wang
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling
- P. R. China
| | - Ju Ding
- 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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26
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Zhang T, Zhang Q, Lu X, Jia M, Song X, Yang D. Theoretical elaboration about the excited state dynamical behaviors for a novel fluorescent sensor. J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3931] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tianjie Zhang
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou PR China
| | - Qiaoli Zhang
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou PR China
| | - Xuemei Lu
- School of MetallurgyNortheastern University Shenyang PR China
| | - Min Jia
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou PR China
| | - Xiaoyan Song
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou PR China
| | - Dapeng Yang
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou PR China
- State Key Laboratory of Molecular Reaction DynamicsDalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian PR China
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27
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Exploring and elaborating the excited state mechanism of a novel AIE material 2-(5-(4-carboxyphenyl)-2-hydroxyphenyl)benzothiazole. Struct Chem 2018. [DOI: 10.1007/s11224-018-1161-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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28
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Zhang T, Yang G, Jia M, Song X, Yang D. Theoretical exploration about excited state proton transfer mechanism for a series of phenol–quinoline compounds. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tianjie Zhang
- School of Mathematics and StaticsNorth China University of Water Resources and Electric Power Zhengzhou China
| | - Guang Yang
- Basic Teaching DepartmentJiaozuo University Jiaozuo China
| | - Min Jia
- School of Mathematics and StaticsNorth China University of Water Resources and Electric Power Zhengzhou China
| | - Xiaoyan Song
- School of Mathematics and StaticsNorth China University of Water Resources and Electric Power Zhengzhou China
| | - Dapeng Yang
- School of Mathematics and StaticsNorth China University of Water Resources and Electric Power Zhengzhou China
- State Key Laboratory of Molecular Reaction Dynamics, Theoretical and Computational ChemistryDalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian China
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Wang Y, Yang G, Jia M, Song X, Yang D. Theoretical insights into the excited state intramolecular proton transfer mechanism for a novel 4-methoxy-3-hydroxyflavone system. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Yusheng Wang
- School of Mathematics and Statics; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Guang Yang
- Basic Teaching Department; Jiaozuo University; Jiaozuo China
| | - Min Jia
- School of Mathematics and Statics; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Xiaoyan Song
- School of Mathematics and Statics; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Dapeng Yang
- School of Mathematics and Statics; North China University of Water Resources and Electric Power; Zhengzhou China
- State Key Laboratory of Molecular Reaction Dynamics, Theoretical and Computational Chemistry, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian China
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Abstract
As one of the most fundamental processes, excited-state proton transfer (ESPT) plays a major role in both chemical and biological systems. In the past several decades, experimental and theoretical studies on ESPT systems have attracted considerable attention because of their tremendous potential in fluorescent probes, biological imaging, white-light-emitting materials, and organic optoelectronic materials. ESPT is related to fluorescence properties and usually occurs on an ultrafast time scale at or below 100 fs. Consequently, steady-state and femtosecond time-resolved absorption, fluorescence, and vibrational spectra have been used to explore the mechanism of ESPT. However, based on previous experimental studies, direct information, such as transition state geometries, energy barrier, and potential energy surface (PES) of the ESPT reaction, is difficult to obtain. These data are important for unravelling the detailed mechanism of ESPT reaction and can be obtained from state-of-the-art ab initio excited-state calculations. In recent years, an increasing number of experimental and theoretical studies on the detailed mechanism of ESPT systems have led to tremendous progress. This Account presents the recent advances in theoretical studies, mainly those from our group. We focus on the cases where the theoretical studies are of great importance and indispensable, such as resolving the debate on the stepwise and concerted mechanism of excited-state double proton transfer (ESDPT), revealing the sensing mechanism of ESPT chemosensors, illustrating the effect of intermolecular hydrogen bonding on the excited-state intramolecular proton transfer (ESIPT) reaction, investigating the fluorescence quenching mechanism of ESPT systems by twisting process, and determining the size of the solute·(solvent) n cluster for the solvent-assisted ESPT reaction. Through calculation of vertical excitation energies, optimization of excited-state geometries, and construction of PES of the ESPT reactions, we provide modifications to experimentally proposed mechanisms or completely new mechanism. Our proposed new and inspirational mechanisms based on theoretical studies can successfully explain the previous experimental results; some of the mechanisms have been further confirmed by experimental studies and provided guidance for researchers to design new ESPT chemosensors. Determination of the energy barrier from an accurate PES is the key to explore the ESPT mechanism with theoretical methods. This approach becomes complicated when the charge transfer state is involved for time-dependent density functional theory (TDDFT) method and optimally tuned range-separated TDDFT provides an alternative way. To unveil the driving force of ESPT reaction, the excited-state molecular dynamics combined with the intrinsic reaction coordinate calculations can be employed. These advanced approaches should be used for further studies on ESPT systems.
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Affiliation(s)
- Panwang Zhou
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, Liaoning, China
| | - Keli Han
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, Liaoning, China
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31
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Yang CP, Fang SU, Yang KH, Tsai HY, Liu YC. Effectively reducing reagent concentrations for electrochemical reactions in aqueous solutions using plasmon-activated water. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.04.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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32
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Wang J, Yu JH, Yang QF, Xu JQ. New Thiocyanatocadmate and Halo-thiocyanatocadmates Modified by Imidazole or Triazole Derivatives: Synthesis, Structural Characterization, and Photoluminescence Property. J CLUST SCI 2018. [DOI: 10.1007/s10876-018-1358-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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33
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Tang Z, Qi Y, Wang Y, Zhou P, Tian J, Fei X. Excited-State Proton Transfer Mechanism of 2,6-Diazaindoles·(H2O)n (n = 2–4) Clusters. J Phys Chem B 2018. [DOI: 10.1021/acs.jpcb.7b10207] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhe Tang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China
| | | | | | - Panwang Zhou
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China
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Chao WC, Lin LJ, Lu JF, Wang JS, Lin TC, Chen YH, Chen YT, Yang HC, Chou PT. Unveiling the water-associated conformational mobility in the active site of ascorbate peroxidase. Biochim Biophys Acta Gen Subj 2018; 1862:451-459. [PMID: 29104043 DOI: 10.1016/j.bbagen.2017.10.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 10/27/2017] [Accepted: 10/30/2017] [Indexed: 11/25/2022]
Abstract
We carried out comprehensive spectroscopic studies of wild type and mutants of ascorbate peroxidase (APX) to gain understanding of the conformational mobility of the active site. In this approach, three unnatural tryptophans were applied to replace the distal tryptophan (W41) in an aim to probe polarity/water environment near the edge of the heme-containing active site. 7-azatryptophan ((7-aza)Trp) is sensitive to environment polarity, while 2,7-azatryptophan ((2,7-aza)Trp) and 2,6-diazatryptophan ((2,6-aza)Trp) undergo excited-state water-catalyzed double and triple proton transfer, respectively, and are sensitive to the water network. The combination of their absorption, emission bands and the associated relaxation dynamics of these fluorescence probes, together with the Soret-band difference absorption and resonance Raman spectroscopy, lead us to unveil the water associated conformational mobility in the active site of APX. The results are suggestive of the existence of equilibrium between two different environments surrounding W41 in APX, i.e., the water-rich and water-scant forms with distinct fluorescence relaxation. Our results thus demonstrate for the first time the power of integrating multiple sensors (7-aza)Trp, (2,7-aza)Trp and (2,6-aza)Trp in probing the water environment of a specifically targeted Trp in proteins.
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Affiliation(s)
- Wei-Chih Chao
- Department of Chemistry, Fu Jen Catholic University, New Taipei City, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan; Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan
| | - Li-Ju Lin
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan; Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan
| | - Jyh-Feng Lu
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan.
| | - Jinn-Shyan Wang
- School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan.
| | - Tzu-Chieh Lin
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan
| | - Yi-Han Chen
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan
| | - Yi-Ting Chen
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan
| | - Hsiao-Ching Yang
- Department of Chemistry, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Pi-Tai Chou
- Department of Chemistry and Center for Emerging Material and Advanced Devices, National Taiwan University, Taipei, Taiwan
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Zhao J, Dong H, Yang H, Zheng Y. Exploring and elaborating the novel excited state dynamical behavior of a bisflavonol system. Org Chem Front 2018. [DOI: 10.1039/c8qo00688a] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this work, we investigate the dual hydrogen bonded 1,4-bis-(3-hydroxy-4-oxo-4H-chromen-2-yl)-benzene (bisflavonol) system in detail.
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Affiliation(s)
- Jinfeng Zhao
- School of Physics
- Shandong University
- Jinan 250100
- China
| | - Hao Dong
- School of Physics
- Shandong University
- Jinan 250100
- China
| | - Huan Yang
- School of Physics
- Shandong University
- Jinan 250100
- China
| | - Yujun Zheng
- School of Physics
- Shandong University
- Jinan 250100
- China
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36
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Huang JD, Ma H. The mechanism of the excited-state multiple proton transfer reaction for 3-Me-2,6-diazaindole in aqueous solution. Org Chem Front 2018. [DOI: 10.1039/c8qo00628h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The potential energy curves show that(2,6-aza)Indin aqueous solution undergoes a quadruple-proton transfer reaction with the assistance of three water molecules.
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Affiliation(s)
- Jin-Dou Huang
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission
- Key Laboratory of Photosensitive Materials and Devices of Liaoning Province
- School of Physics and Materials Engineering
- Dalian Nationalities University
- Dalian 116600
| | - Huipeng Ma
- College of Medical Laboratory Science
- Dalian Medical University
- Dalian 116044
- P. R. China
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