51
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Chen Y, Piao Y, Feng X, Yu X, Jin X, Zhao G. Excited state intramolecular proton transfer (ESIPT) luminescence mechanism for 4-N,N-diethylamino-3-hydroxyflavone in propylene carbonate, acetonitrile and the mixed solvents. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 224:117416. [PMID: 31394389 DOI: 10.1016/j.saa.2019.117416] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 07/15/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
In this work, density functional theory (DFT) and time density functional theory (TDDFT) methods were employed to investigate the nature of the double fluorescence emission of DEAHF in these three solvents. We analyzed the geometric structures, vibrational frequencies, frontier molecular orbitals (MOs), molecular electrostatic potential surface (MEPS), calculated absorption and fluorescence spectra and the potential-energy curves for DEAHF. All the results show that the intramolecular hydrogen bond of DEAHF is strengthened from S0 to S1 and the electron density redistribution occurs between the proton acceptor and donor, which can facilitate ESIPT. Moreover, the geometric structures, absorption and emission spectra, MEPS and potential-energy curve of DEAHF are identical. It reveals theoretically that ACN and PC can maintain the polarity of the solvent with 1:1 mixing, which is consistent with the experimental results.
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Affiliation(s)
- Yan Chen
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Yongzhe Piao
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China; College of Life Sciences, Dalian Nationalities University, Dalian 116600, China.
| | - Xia Feng
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Xi Yu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Xiaoning Jin
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China
| | - Guangjiu Zhao
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, National Virtual Simulation Experimental Teaching Center for Chemistry & Chemical engineering Education, Department of Chemistry, School of Science, Tianjin University, Tianjin 300354, China.
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52
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Jia M, Song X, Yang X, Yang D. A time‐dependent density functional theory study on the excited state behavior of a novel T
2
(OH)B molecule. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.201900140] [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)
- Min Jia
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou P. R. China
| | - Xiaoyan Song
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou P. R. China
| | - Xiaohui Yang
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou P. R. China
| | - Dapeng Yang
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou P. R. China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian P. R. China
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53
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Dokmaisrijan S, Kungwan N. LC-BLYP Calculations of the Structures and Photophysical Properties of [1,3]Thiazolo[4,5- b]pyrazine Derivatives in Cyclohexane and Methanol. J Phys Chem A 2019; 123:10685-10693. [PMID: 31769683 DOI: 10.1021/acs.jpca.9b09074] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Applications of the B3LYP and LC-BLYP functionals with the 6-311+G(d,p) basis set for predicting absorption and fluorescence spectra of benzothiazole and 11 [1,3]thiazolo[4,5-b]pyrazine (TPy) derivatives in implicit solvents (cyclohexane and methanol) were tested and compared with experimental results. The damping parameter of LC-BLYP was tuned for simulating absorption and fluorescence spectra of each compound. For the 11 TPy derivatives, four and seven compounds are small- and medium-sized TPy derivatives, respectively. From this calculation, TD-B3LYP can be used to simulate the absorption spectra of the small-sized compounds in cyclohexane and methanol, but it gives poor results for the fluorescence spectra in cyclohexane and methanol. Contrarily, the LC-BLYP functional with the optimal damping parameter can reproduce the absorption and fluorescence spectra of all compounds in cyclohexane and methanol. The values of the damping parameter of LC-BLYP depend on the types of substituents and solvents. Moreover, the conformations of the compounds do not affect the spectra, and the molecular size and molecular dipole moment do not affect the damping parameter. In addition, types and the number of substitutions attached to the phenyl rings of TPy as well as solvent polarity play the key roles in the long-wavelength fluorescence emission and fluorescence brightness of the compounds. The intramolecular charge transfer of the compounds containing the -NMe2 and -CN groups is predominant in methanol, resulting in a large Stokes shift and oscillator strength.
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54
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Zhang H, Liu S, Zhang C, Fan J, Lin L, Wang C, Song Y. The mechanism of the excited-state proton transfer of Salicylaldehyde azine and 2,2'-[1,4-Phenylenebis{(E)- nitrilomethylidyne}] bisphenol: Via single or double proton transfer. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 223:117321. [PMID: 31277029 DOI: 10.1016/j.saa.2019.117321] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 06/25/2019] [Accepted: 06/25/2019] [Indexed: 06/09/2023]
Abstract
The Salicylaldehyde azine (H2SA) and 2,2'-[1,4-Phenylenebis{(E)-nitrilomethylidyne}] bisphenol (H2SPA) with double proton transfer characteristics were synthesized recently (Phys. Chem. Chem. Phys., 2018, 20, 23,762). However, the detailed theoretical interpretation of proton transfer (PT) mechanism is inadequate. In the present work, density functional theory (DFT) and time-density functional theory (TDDFT) are employed to study the proton transfer mechanism of H2SA and H2SPA in detail. Bond parameters, infrared (IR) spectra and frontier molecular orbitals (FMOs) calculated by PBE0/TZVP method indicate the strength of hydrogen bond is enhanced in S1 state, which can be visualized by the reduced density gradient (RDG) analysis. The potential energy surfaces (PESs) of H2SA and H2SPA are also constructed. The small barriers indicate that both the single proton transfer and double proton transfer of H2SA and H2SPA are more likely to occur in the S1 state. In addition, the properties of H2SA and H2SPA after chelation with Li+ have also been theoretically characterized. According to the calculated fluorescence spectra of compounds (H2SA-Li+ and H2SPA-Li+), it was found that only the planar structure of H2SA-Li+ can form metallogel, which verified the experimental results.
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Affiliation(s)
- Hui Zhang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Songsong Liu
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Changzhe Zhang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Jianzhong Fan
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Lili Lin
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Chuankui Wang
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Yuzhi Song
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China.
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55
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Yang G, Jin X, Chen K, Yang D. Uncovering the excited state trends and ESIPT mechanism for 2-(hydroxy-3-dimethyl-phenyl)-benzooxazole-6-carboxylicacid. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.136815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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56
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Wang J, Liu Q, Yang D. Unraveling photoexcitation dynamical behavior for bis (salicylidene)‐1,5‐diaminonaphthalene (BSD) system. J PHYS ORG CHEM 2019. [DOI: 10.1002/poc.4033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jiemin Wang
- Department of Physics and Electronic InformationLuoyang Normal University Luoyang PR China
- Henan Key Laboratory of Electromagnetic Transformation and DetectionLuoyang Normal University Luoyang PR China
| | - Qiang Liu
- Department of Physics and Electronic InformationLuoyang Normal University Luoyang PR China
- Henan Key Laboratory of Electromagnetic Transformation and DetectionLuoyang Normal University Luoyang PR China
| | - Dapeng Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian PR China
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57
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Li Y, Liu X, Han J, Cao B, Sun C, Diao L, Yin H, Shi Y. Solvent viscosity induces twisted intramolecular charge transfer state lifetime tunable of Thioflavin-T. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 222:117244. [PMID: 31203054 DOI: 10.1016/j.saa.2019.117244] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 06/05/2019] [Accepted: 06/05/2019] [Indexed: 06/09/2023]
Abstract
Excited-state deactivation dynamics of Thioflavin-T (ThT) in gradual viscosity solvents were investigated. Femtosecond transient absorption spectra and dynamic decay curves both present significant distinction of ThT in different volume ratios binary mixtures solvents. Dynamics fitting lifetime of twisted intramolecular charge transfer (TICT) state is strongly dependent on solvents viscosity. Compared to rotation corresponding time of ThT in low viscosity solvent (0.6 cp) experimentally coincident well with Stokes-Einstein-Debye (SED) equation, the relation between rotation corresponding time and relatively high viscosity (5.9 cp to 1091.2 cp) is more consistent with fractional SED equation. Combined with optimized geometric structures of ThT by density functional theory and time-dependent density functional theory, further understand TICT state lifetime increases with increasing solvents viscosity. Our work provides a comprehensive understanding of fluorescence molecular rotor (FMR) deactivation process in different viscosity solvents and is helpful to design new FMR.
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Affiliation(s)
- You Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Xiaochun Liu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Jianhui Han
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Bifa Cao
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Chaofan Sun
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Lihe Diao
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Hang Yin
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Ying Shi
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
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58
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Wang L, Wang Y, Zhao J, Zhao J. Insights into the excited state intramolecular proton transfer process and mechanism of the novel 3‐hydroxythioflavone system: A theoretical study. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Lifei Wang
- School of ScienceShandong Jiaotong University Jinan China
| | - Yan Wang
- School of ScienceShandong Jiaotong University Jinan China
| | - Juan Zhao
- School of ScienceShandong Jiaotong University Jinan China
| | - Jinfeng Zhao
- School of PhysicsShandong University Jinan China
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59
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Gao H, Yang X, Zhang T, Yang D. Investigation on the excited state intramolecular proton transfer process for the novel 2‐(3,5‐dichloro‐2‐hydroxy‐phenyl)‐benzooxazole‐5‐carboxylicacid system. J PHYS ORG CHEM 2019. [DOI: 10.1002/poc.3989] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Haiyan Gao
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou China
| | - Xiaohui Yang
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou China
| | - Tianjie Zhang
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou China
| | - Dapeng Yang
- College of Physics and ElectronicsNorth 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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60
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Achouri B, Belmiloud Y, Brahimi M. Proton transfer reaction confined within carbon nanotubes: Density functional theory and quantitative structure–property relationship analysis. PROGRESS IN REACTION KINETICS AND MECHANISM 2019. [DOI: 10.1177/1468678319864473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this work, we focus our attention on chemical reactions confined within carbon nanotubes. As a result of the confinement within carbon nanotubes, novel physical and chemical properties are found for the confined materials. We consider the feasibility of proton transfer inside carbon nanotubes. To do that, we have chosen formamide as the simplest real model for exhibiting the tautomerization in DNA. We have used the quantitative structure–property relationship method, based on geometry optimization and quantum chemical structural descriptors, to illustrate the potential of using the confined space inside carbon nanotubes, which will provide comprehensive information about carbon nanotubes. All calculations have been carried out using density functional theory quantum calculations with the B3LYP functional. The geometries optimized by the Gaussian program were transferred to the computer software DRAGON to calculate pertinent descriptors that could be used in the quantitative structure–property relationship model.
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Affiliation(s)
- Bilal Achouri
- Laboratoire de Physico Chimie Théorique et Chimie Informatique (LPCTCI), Faculté de Chimie, Université Science and Technology Houari Boumediene (USTHB), Algiers, Algeria
- Centre de Recherche en Analyses Physico Chimiques (CRAPC), Algiers, Algeria
| | - Yamina Belmiloud
- Laboratoire de Physico Chimie Théorique et Chimie Informatique (LPCTCI), Faculté de Chimie, Université Science and Technology Houari Boumediene (USTHB), Algiers, Algeria
| | - Meziane Brahimi
- Laboratoire de Physico Chimie Théorique et Chimie Informatique (LPCTCI), Faculté de Chimie, Université Science and Technology Houari Boumediene (USTHB), Algiers, Algeria
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61
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Liu D, Chen A, Sui L, Li S, Ke D, Li Q, Jiang Y, Jin M. Effect of hydrogen bond on solvation dynamics of coumarin153 in cyclohexane-phenol solvent mixtures by time-resolved optical Kerr fluorescence. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 219:68-73. [PMID: 31030048 DOI: 10.1016/j.saa.2019.04.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 04/09/2019] [Accepted: 04/14/2019] [Indexed: 06/09/2023]
Abstract
Time-resolved optical Kerr fluorescence system was used to investigate time-resolved red-shift of coumarin 153 in different solvent mixtures. The mixtures included four mole fractions of phenol-cyclohexane solvents (0, 0.013, 0.08, and 0.3), and anisole-cyclohexane solvents with the mole fraction of 0.3. The measured time-resolved fluorescence showed that, in the solvent mixtures containing phenol, the time-dependent frequency shift accelerated with the increase in the mole fraction of phenol-cyclohexane mixtures. However, the time-dependent red-shift in the fluorescence was not observed in the anisole-cyclohexane mixture, the solvent polarity could not influence the spectral Stokes shift compared with phenol. The results indicated that coumarin 153 formed an excited hydrogen bond with phenol, and the excited hydrogen bond was strengthened with an increase in the mole fraction of phenol. And, these processes also suggested that the increase in the phenol ratio improves a large number of hydrogen bond formed between phenol and carbonyl group of coumarin 153, the charge distribution will be faster towards lower the free energy of the system due to the stronger dipole moment. Therefore, the corresponding solvation response in phenol-cyclohexane mixtures with higher mole fractions decays very rapidly.
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Affiliation(s)
- Dunli Liu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China
| | - Anmin Chen
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China.
| | - Laizhi Sui
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China; State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Suyu Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China
| | - Da Ke
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China
| | - Qingyi Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China; State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yuanfei Jiang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China
| | - Mingxing Jin
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China; Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China.
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62
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Jin P, Long J, Du Y, Zheng X, Xue J. Hydrogen bond configuration and protonation of ground and lowest excited triplet states of 4‑amino‑4'‑nitrobiphenyl based on nanosecond transient absorption spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 217:44-50. [PMID: 30927570 DOI: 10.1016/j.saa.2019.03.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 01/19/2019] [Accepted: 03/17/2019] [Indexed: 06/09/2023]
Abstract
Intramolecular charge transfer (ICT) is an important photochemical process. In contrast to those in singlet manifold, triplet ICT states were less studied. In this paper, the lowest excited triplet state (T1) of 4‑amino‑4'‑nitrobiphenyl (NH2-Bp-NO2) was recorded with nanosecond transient absorption spectroscopy in acidic acetonitrile and alcoholic solutions. By employing the Kamlet-Taft model to analyze the correlation between absorption maxima and alcohol solvent properties including polarity/polarizability, abilities of hydrogen bond donating and hydrogen bond accepting, hydrogen bond configuration in the ground state (S0) and T1 was resolved. The results suggest that the hydrogen bond between amino H and alcohol is dominant in S0, while in T1, hydrogen bonds between amino H and alcohol, between nitro O and alcohol have comparable contribution. By examination of the 1‑naphthol quench effect on T1, the hydrogen bond between nitro O and alcohol was confirmed present. Theoretical calculation results on the model of NH2-Bp-NO2-(MeOH)3 also indicate that hydrogen bonds between amino H and alcohol, between nitro O and alcohol are both much stronger in T1 than in S0. In acidic acetonitrile solution, in S0 of NH2-Bp-NO2 the amino group is protonated with pKa of 4.5, meanwhile in T1 the nitro group is much easier to be protonated than in S0. Its conjugated acid was measured to have a pKa of 3.1.
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Affiliation(s)
- Peipei Jin
- Department of Chemsitry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jing Long
- Department of Chemsitry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yong Du
- Center for THz Research, China Jiliang University, Hangzhou 310018, China
| | - Xuming Zheng
- Department of Chemsitry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jiadan Xue
- Department of Chemsitry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
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63
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Zhao D, Liu Y, Zhang X, Gao J, Liu S, Zhao Z. Theoretical insights into the excited-state intermolecular hydrogen bonding dynamics of PRODAN derivative in toluene solution. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.04.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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64
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Liu R, Ma Y, Liu J, Yang Y, Chu T. New perspective on the fluorescence and sensing mechanism of TNP chemosensor 2-(4,5-bis(4-chlorophenyl)-1H-imidazol-2-yl)-4-chlorolphenol. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 213:309-317. [PMID: 30711900 DOI: 10.1016/j.saa.2019.01.077] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 01/08/2019] [Accepted: 01/26/2019] [Indexed: 06/09/2023]
Abstract
For TNP chemosensor 2-(4,5-Bis(4-Chlorophenyl)-1H-Imidazol-2-yl)-4-Chlorolphenol (HPICI), previous thought with no theoretical basis was that excited-state intramolecular proton transfer (ESIPT) process and the ground-state HPICI-TNP complex are mainly responsible for its fluorescence emission and the detection of TNP. However, this interpretation has been proved to be wrong by the present theoretical DFT/TDDFT explorations. Actually, the strong fluorescence of HPICI is mainly induced by the local excitation of the enol form HPICI(E) without ESIPT, and the fluorescence quenching by TNP is due to the photo-induced electron transfer (PET) process together with the cooperative effect of hydrogen-bonding interaction and π-π stacking interaction coexisting in the HPICI-TNP complex. The strengthened excited-state hydrogen bond promotes the PET process, thus facilitates the fluorescence quenching. This mechanism is proposed on the basis of the theoretical analyses on molecule geometry, binding energy, Gibbs free energy, electronic transitions, and frontier molecular orbitals (FMOs).
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Affiliation(s)
- Runze Liu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yinhua Ma
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Jianyong Liu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China
| | - Yanqiang Yang
- Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, PR China
| | - Tianshu Chu
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China; Institute for Computational Sciences and Engineering, Laboratory of New Fiber Material and Modern Textile, the Growing Base for State Key Laboratory, School of Physics Science, Qingdao University, Qingdao 266071, PR China.
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65
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Ma Q, Li C, Jia X, He Y, Liu Y, Liu Y, Yang Y. Theoretical study on excited-state intramolecular proton transfer process of cyanide group substituted 2-(2-hydroxyphenyl)benzothiazole. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 212:281-285. [PMID: 30660060 DOI: 10.1016/j.saa.2019.01.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/08/2019] [Accepted: 01/10/2019] [Indexed: 06/09/2023]
Abstract
In this work, the influence of cyanide group substituted on the excited-state intramolecular proton transfer of 2-(2-hydroxyphenyl)benzothiazole (HBT) has been theoretical studied. It is found that the intramolecular hydrogen bonds of HBT and its cyanide substituted derivatives are significantly strengthened in the first excited (S1) state, while this strengthening tends to decrease with the substitution of cyano group. The natural population analysis (NPA) is performed to interpret this phenomenon and the calculated results show that the introduction of cyano groups induces intramolecular charge transfer, leading to the decrease of electrostatic interaction of intramolecular hydrogen bond in the S1 state compared to isolated HBT. Therefore, proton transfer of HBT and its derivatives become difficult with the introduction of cyano groups, which is consistent with the calculated potential barriers (1.95, 2.71 and 2.81 kcal/mol respectively) of the three molecules in the S1 state. This work interprets the hindrance of cyanide group on the proton transfer of HBT and its derivatives in the S1 state, which will bring new insight into the study of analogous molecular system.
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Affiliation(s)
- Qianfei Ma
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China
| | - Chaozheng Li
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China
| | - Xueli Jia
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China
| | - Yuanyuan He
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China
| | - Yang Liu
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China
| | - Yufang Liu
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China.
| | - Yonggang Yang
- College of Physics and Materials Science, Henan Normal University, Xinxiang 453007, China.
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66
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Bhat H, Gupta PSS, Biswal S, Rana MK. Anion Sensing by Novel Triarylboranes Containing Boraanthracene: DFT Functional Assessment, Selective Interactions, and Mechanism Demonstration. ACS OMEGA 2019; 4:4505-4518. [PMID: 31459645 PMCID: PMC6648568 DOI: 10.1021/acsomega.8b03237] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 01/16/2019] [Indexed: 06/10/2023]
Abstract
Analytical methods often involve expensive instrumentation and tedious sample pretreatment for an analyte detection. Being toxic and detrimental to human health, sensing of cyanide (CN-), fluoride (F-), chloride (Cl-), bromide (Br-), nitrate (NO3 -), acetate (CH3COO-), and bisulfate (HSO4 -) is performed by a boron-based molecular receptor, N,N,N,3,5-pentamethyl-4-{2-thia-9-boratricyclo[8.4.0.03,8]tetradeca-1(10),3(8),4,6,11,13-hexaen-9-yl}anili-nium (1), and the three newly designed receptors from it. Thermodynamics, electronic structure, and photophysical properties are computed by employing density functional theory (DFT) and time-dependent density functional theory (TD-DFT) to explore selective sensing of these anions and its mechanism. Free-energy changes (ΔG) and binding energies (ΔE) suggest that among these anions, only binding of CN- and F- is thermodynamically feasible with a very strong binding affinity with the receptors. Boron atoms containing positive natural charges act as the electrophilic centers to bind the anions involving a 2p-2p orbital overlap resulting in charge transfer. In the receptor-analyte complexes with CN- and F-, fluorescence is quenched due to the intramolecular charge transfer transitions (π-π* transitions in the case of the receptors lead to fluorescence), internal conversion, and associated configurational changes. Among the six tested functionals, CAM-B3LYP/6-31G(d) is found to be the most accurate one. The designed receptors are better fluorescent probes for F- and CN-, demonstrating their importance for the practical utility.
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Affiliation(s)
- Haamid
Rasool Bhat
- Department of Chemical Sciences, Indian Institute of Science Education and Research
Berhampur, Government ITI Campus, Engineering School Road,
Ganjam, Berhampur 760010, Odisha, India
| | - Parth Sarthi Sen Gupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research
Berhampur, Government ITI Campus, Engineering School Road,
Ganjam, Berhampur 760010, Odisha, India
| | - Satyaranjan Biswal
- Department of Chemical Sciences, Indian Institute of Science Education and Research
Berhampur, Government ITI Campus, Engineering School Road,
Ganjam, Berhampur 760010, Odisha, India
| | - Malay Kumar Rana
- Department of Chemical Sciences, Indian Institute of Science Education and Research
Berhampur, Government ITI Campus, Engineering School Road,
Ganjam, Berhampur 760010, Odisha, India
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67
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Song Y, Liu S, Yang Y, Wei D, Pan J, Li Y. A detecting Al 3+ ion luminophor 2-(Anthracen-1-yliminomethyl)-phenol: Theoretical investigation on the fluorescence properties and ESIPT mechanism. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 208:309-314. [PMID: 30342340 DOI: 10.1016/j.saa.2018.10.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 10/10/2018] [Accepted: 10/12/2018] [Indexed: 06/08/2023]
Abstract
2-(Anthracen-1-yliminomethyl)-phenol (AYP) had been synthesized recently and used as a chemosensor to detect Al3+ ion, while its fluorescent properties and excited-state intramolecular proton transfer (ESIPT) process were not investigated in detail. In this study, the molecular absorption and emission spectra were accurately reproduced by using TDDFT/CAM-B3LYP/6-31 + G(d,p) computational method. The ESIPT- chromophore photochemical behaviors and detecting Al3+ ion photophysical changes were explained for the first time at the molecular level. As driving force of ESIPT reaction, the bond parameters and vibrational frequencies of intramolecular hydrogen bond were analyzed by optimizing structures and calculating infrared spectra, analysis of frontier molecular orbitals and reduced density gradient isosurfaces. To further elucidate the proton transfer reactive paths, we scanned the potential energy curves of AYP chemosensor in different electronic states. By comparing potential barriers of the S0 and S1 states, the proton transfer is confirmed to occur in the S1 state. In addition, the experimentally unpresented AYP-Enol fluorescence signal was assigned via analyzing molecular fluorescent properties. Moreover, the calculated fluorescence spectra were employed to explain carefully the mechanism of detection of Al3+ ion.
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Affiliation(s)
- Yuzhi Song
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, PR China.
| | - Shuang Liu
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, PR China
| | - Yunfan Yang
- Department of Physics, Liaoning University, Shenyang 110036, PR China
| | - Dongmei Wei
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, PR China
| | - Jie Pan
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250014, PR China
| | - Yongqing Li
- Department of Physics, Liaoning University, Shenyang 110036, PR China.
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68
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Qi Y, Lu M, Wang Y, Tang Z, Gao Z, Tian J, Fei X, Li Y, Liu J. A theoretical study of the ESIPT mechanism of 3-hydroxyflavone derivatives: solvation effect and the importance of TICT for its dual fluorescence properties. Org Chem Front 2019. [DOI: 10.1039/c9qo00634f] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
As the dielectric constant decreases, the ESIPT reaction occurs more easily and TICT is good at emitting double fluorescence.
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Affiliation(s)
- Yutai Qi
- School of Biological Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Meiheng Lu
- State Key Laboratory of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics
- Chinese Academy of Science
- Dalian 116023
- China
| | - Yi Wang
- School of Biological Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Zhe Tang
- Institute of Molecular Sciences and Engineering
- Shandong University
- Qing dao 266237
- P. R. China
| | - Ziqing Gao
- School of Biological Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Jing Tian
- School of Biological Engineering
- Dalian Polytechnic University
- Dalian 116034
- P. R. China
| | - Xu Fei
- Lab Analyst of Network Information Center
- Dalian Polytechnic University
- Dalian
- P. R. China
| | - Yao Li
- School of Light Industry & Chemical Engineering
- Dalian Polytechnic University
- Dalian
- P. R. China
| | - Jianyong Liu
- State Key Laboratory of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics
- Chinese Academy of Science
- Dalian 116023
- China
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69
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Li C, Guo W, Zhou P, Tang Z. The effects of the heteroatom and position on excited-state intramolecular proton transfer of new hydroxyphenyl benzoxazole derivatives: a time-dependent density functional theory study. Org Chem Front 2019. [DOI: 10.1039/c9qo00295b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The effects of the heteroatom and position on excited-state intramolecular proton transfer (ESIPT) of 2-[4′-(N-4,6-dichloro-1,3,5-triazi-n-2-yl)2′hydroxyphenyl]benzoxazole (4THBO) have been investigated via time-dependent density functional theory studies.
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Affiliation(s)
- Changming Li
- School of Electrical Engineering
- University of South China
- Hengyang 421001
- China
- State Key Lab of Molecular Reaction Dynamics
| | - Wei Guo
- School of Electrical Engineering
- University of South China
- Hengyang 421001
- China
| | - Panwang Zhou
- Institute of Molecular Sciences and Engineering
- Shandong University
- Qingdao 266235
- P. R. China
| | - Zhe Tang
- Institute of Molecular Sciences and Engineering
- Shandong University
- Qingdao 266235
- P. R. China
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70
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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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71
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Theoretical investigation on excited state intramolecular proton transfer of 1-aryl-2-(furan-2-yl) butane-1, 3-diones substitutions. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.091] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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72
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Ma Y, Zhao J, Liu J, Yang Y, Chu T. A binding model study on TNP fluorescent sensor 4,40-(9,9 dimethylfluorene-2,7-diyl)dibenzoic acid. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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73
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Tang Z, Lu M, Liu K, Zhao Y, Qi Y, Wang Y, Zhang P, Zhou P. Solvation effect on the ESIPT mechanism of 2-(4′-amino-2′-hydroxyphenyl)-1H-imidazo-[4,5-c]pyridine. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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74
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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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75
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Du C, Zhou Q, Zhang M, Song P, Ma F. Excited-state intramolecular proton transfer of 6-amino-2-(2′-hydroxyphenyl) benzoxazole (6A-HBO) in different solvents. J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3901] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Can Du
- Department of Physics; Liaoning University; Shenyang China
| | - Qiao Zhou
- Department of Physics; Liaoning University; Shenyang China
| | - Meixia Zhang
- Department of Physics; Liaoning University; Shenyang China
| | - Peng Song
- Department of Physics; Liaoning University; Shenyang China
- Liaoning Key Laboratory of Semiconductor Light Emitting and Photocatalytic Materials; Liaoning University; Shenyang China
| | - Fengcai Ma
- Department of Physics; Liaoning University; Shenyang China
- Liaoning Key Laboratory of Semiconductor Light Emitting and Photocatalytic Materials; Liaoning University; Shenyang China
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76
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Ma C, Chan CTL, Chan RCT, Wong AKW, Chung BPY, Kwok WM. Photoprotection or photodamage: a direct observation of nonradiative dynamics from 2-ethylhexyl 4-dimethylaminobenzoate sunscreen agent. Phys Chem Chem Phys 2018; 20:24796-24806. [PMID: 30229763 DOI: 10.1039/c8cp04447c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Apart from being an analogue of the prototype for photoinduced intramolecular charge transfer (ICT), 2-ethylhexyl 4-dimethylaminobenzoate (EHDMABA) is also one of the earliest patented and most commonly used sunscreen components. There is, however, little documented information about the photophysics and factors affecting the photophysics of this molecule. Such information is of importance for both the understanding of the ICT reaction and assessing the underlying process of photoprotection, especially in view of the "sunscreen controversy" that has arisen from the contrasting in vivo vs. in vitro photobiological results on this and related UV filters. We report herein a femtosecond broadband time-resolved fluorescence (fs-TRF), complemented by transient absorption (fs-TA) to allow a full probe of the excited state cascades for EHDMABA and two of its derivatives in solvents of varied properties. The results provide direct evidence for a nearly solvent independent inner sphere ICT reaction occurring on the sub-picosecond time scale, and an ensuing solvent dictated deactivation of the ICT state. The ICT state in the aprotic solvent acetonitrile decayed solely through the intrinsic intersystem crossing (ISC) to produce a potentially harmful triplet excited state. In the protic solvent, the solvation and formation of ICT-induced solute-solvent hydrogen (H)-bonding opened the originally inaccessible internal conversion (IC) channel of the ICT state, leading to the rapid reformation of the ground state molecule with a unitary efficiency in the aqueous solution. This H-bonding-mediated IC restrained or eliminated the intrinsic ISC, providing a mechanism at the molecular level for the benign dissipation of the electronic excitation. The precise rate of IC was observed to vary with the alkoxy substituent and its efficiency was affected by the H-bonding capacity of the solvent. The findings of this work demonstrate the pivotal role of the microenvironment and the direct participation of solvent molecules through H-bonding in drastically altering the nonradiative dynamics and promoting or inhibiting photostability and photoprotection. This may assist in developing next-generation UV filters and help in improving formulation design for the optimal efficacy of sunscreen products. The pronounced H-bonding-induced fluorescence quenching and variation in the fluorescence wavelength imply that these molecules may also serve as a sensitive fluorescence probe for the H-bonding properties of the microenvironment.
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Affiliation(s)
- Chensheng Ma
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, P. R. China.
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77
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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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78
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Gao H, Yang G, Jia M, Song X, Zhang Q, Yang D. A detailed theoretical study on the excited-state hydrogen-bonding dynamics and the proton transfer mechanism for a novel white-light fluorophore. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Haiyan Gao
- 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
| | - Qiaoli Zhang
- 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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79
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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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80
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Excited-state intramolecular proton transfer mechanism for 2-(quinolin-2-yl)-3-hydroxychromone: A detailed time-dependent density functional theory study. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.03.094] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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81
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Yang D, Jia M, Song X, Zhang Q. Different ESIPT Mechanisms for Angular-Shaped Quinacridone in Toluene and Dimethyl Formamide (DMF) Solvents: A Theoretical Study. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201700350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dapeng Yang
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou 450046 China
- State Key Laboratory of Molecular Reaction Dynamics, Theoretical and Computational Chemistry, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
| | - Min Jia
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou 450046 China
| | - Xiaoyan Song
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou 450046 China
| | - Qiaoli Zhang
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou 450046 China
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82
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Density Functional Theory Applied to Excited State Intramolecular Proton Transfer in Imidazole-, Oxazole-, and Thiazole-Based Systems. Molecules 2018; 23:molecules23051231. [PMID: 29883373 PMCID: PMC6100175 DOI: 10.3390/molecules23051231] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 05/15/2018] [Accepted: 05/17/2018] [Indexed: 01/28/2023] Open
Abstract
Excited state intramolecular proton transfer (ESIPT) is a photoinduced process strongly associated to hydrogen bonding within a molecular framework. In this manuscript, we computed potential energy data using Time Dependent Density Functional Theory (TDDFT) for triphenyl-substituted heterocycles, which evidenced an energetically favorable proton transfer on the excited state (i.e., ESIPT) but not on the ground state. Moreover, we describe how changes on heterocyclic functionalities, based on imidazole, oxazole, and thiazole systems, affect the ESIPT process that converts an enolic species to a ketonic one through photon-induced proton transfer. Structural and photophysical data were obtained theoretically by means of density functional theory (DFT) calculations and contrasted for the three heterocyclics. Different functionals were used, but B3LYP was the one that adequately predicted absorption data. It was observed that the intramolecular hydrogen bond is strengthened in the excited state, supporting the occurrence of ESIPT. Finally, it was observed that, with the formation of the excited state, there is a decrease in electronic density at the oxygen atom that acts as proton donor, while there is a substantial increase in the corresponding density at the nitrogen atom that serves as proton acceptor, thus, indicating that proton transfer is indeed favored after photon absorption.
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83
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Yin H, Shi Y. Theoretical investigation on the excited state intramolecular proton coupled charge transfer phenomenon for a novel fluorophore. J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3856] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hang Yin
- Institute of Atomic and Molecular Physics; Jilin University; Changchun China
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry; Jilin University; Changchun China
| | - Ying Shi
- Institute of Atomic and Molecular Physics; Jilin University; Changchun China
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84
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Ma Y, Zhao L, Li Y, Liu J, Yang Y, Chu T. Investigation on sensing mechanism of a fluorescent probe for TNP detection in aqueous solution. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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85
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Investigation of the Intermolecular Hydrogen Bonding Effects on the Intramolecular Charge Transfer Process of Coumarin 340 in Tetrahydrofuran Solvent. J CLUST SCI 2018. [DOI: 10.1007/s10876-018-1371-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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86
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Bhat HR, Jha PC. A theoretical study on anion sensing mechanism of multi-phosphonium triarylboranes: intramolecular charge transfer and configurational changes. Phys Chem Chem Phys 2018; 19:14811-14820. [PMID: 28548172 DOI: 10.1039/c7cp02287e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The binding selectivity and recognition mechanism of a series of mono-, di- and triphosphonium substituted triarylboranes: (4-(dimesitylboryl)-3,5-dimethylphenyl)phosphonium ([Mes2BArP]+, 1), 1,1'-mesitylboranediylbis(3,5-dimethylphenyl)phosphonium ([MesBArP2]2+, 2) and 1,1',1''-boranetriyltris(3,5-dimethylphenyl)phosphonium ([BArP3]3+, 3) where ArP = 4-(H3P)-2,6-Me2-C6H2, for various anions has been investigated by employing density functional theory (DFT) and time dependent-density functional theory (TD-DFT) methods. Natural population analysis indicates the electrophilic nature of the boron centers in 1-3 for the nucleophilic addition of anions. The calculated free energy changes (ΔG) reveal that out of CN-, F-, Cl-, Br-, NO3-, CH3COO- and HSO4- only the binding of CN- and F- with 1, 2 and 3 is thermodynamically feasible. In addition, the calculated binding energies reflect that CN- shows lesser binding affinity than F- with 1, 2 and 3. Frontier molecular orbital (FMO) analysis reveals that the first excited states (S1) of 1-3 are the local excited states with a π → π* transition, whereas the third excited state (S3), fifth excited state (S5), fourth excited state (S4) and fourth excited states (S4) of [Mes2BArP]+F (1F, the fluoro form of 1), [MesBArP2]2+F (2F, the fluoro form of 2), [Mes2BArP]+CN (1CN, the cyano form of 1) and [MesBArP2]2+CN (2CN, the cyano form of 2), respectively, are charge separation states found to be responsible for the intramolecular charge transfer (ICT) process. The partial configuration changes and ICT induce fluorescence quenching in 1F, 2F, 1CN and 2CN synergistically after an internal conversion (IC) from their respective S3, S5, S4 and S4 to S1.
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Affiliation(s)
- Haamid R Bhat
- Computational Chemistry Laboratory, School of Chemical Sciences, Central University of Gujarat, Gandhinagar, 382030, India.
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87
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Bazzi S, Welsch R, Vendrell O, Santra R. Challenges in XUV Photochemistry Simulations: A Case Study on Ultrafast Fragmentation Dynamics of the Benzene Radical Cation. J Phys Chem A 2018; 122:1004-1010. [PMID: 29298485 DOI: 10.1021/acs.jpca.7b11543] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The challenges of simulating extreme ultraviolet (XUV)-induced dissociation dynamics of organic molecules on a multitude of coupled potential energy surfaces are discussed for the prototypical photoionization of benzene. The prospects of Koopmans' theorem-based electronic structure calculations in combination with classical trajectories and Tully's fewest switches surface hopping are explored. It is found that a Koopmans' theorem-based approach overestimates the CH dissociation barrier and thus underestimates the fragmentation yield. However, the nonadiabatic population dynamics are in good agreement with previous approaches, indicating that the Koopmans' theorem based potentials are well described around the Franck-Condon point. This is explicitly tested for the ground state potential of the benzene cation employing CASPT2 calculations, for which very good agreement is found. This work highlights the need for efficient electronic structure approaches that can treat medium-sized organic molecules with a multitude of coupled excited states and several dissociation channels.
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Affiliation(s)
- Sophia Bazzi
- Center for Free-Electron Laser Science, DESY , Notkestrasse 85, 22607 Hamburg, Germany.,Department of Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany
| | - Ralph Welsch
- Center for Free-Electron Laser Science, DESY , Notkestrasse 85, 22607 Hamburg, Germany
| | - Oriol Vendrell
- Center for Free-Electron Laser Science, DESY , Notkestrasse 85, 22607 Hamburg, Germany.,Department of Physics and Astronomy, Aarhus University , Ny Munkegade 120, 8000 Aarhus C, Denmark.,The Hamburg Centre for Ultrafast Imaging , Luruper Chausee 149, 22761 Hamburg, Germany
| | - Robin Santra
- Center for Free-Electron Laser Science, DESY , Notkestrasse 85, 22607 Hamburg, Germany.,Department of Chemistry, University of Hamburg , Grindelallee 117, 20146 Hamburg, Germany.,The Hamburg Centre for Ultrafast Imaging , Luruper Chausee 149, 22761 Hamburg, Germany.,Department of Physics, University of Hamburg , Jungiusstrasse 9, 20355 Hamburg, Germany
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88
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Hao J, Yang Y. Insight into the new excited-state intramolecular proton transfer (ESIPT) mechanism of N,N′-bis(salicylidene)-p-phenylenediamine (p-BSP). Chem Phys 2018. [DOI: 10.1016/j.chemphys.2017.11.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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89
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Yao HH, Cheng HH, Cheng CH, Lin CK, Yang JS, Chen IC. Charge-transfer and isomerization reactions of trans-4-(N-arylamino)stilbenes. Phys Chem Chem Phys 2018; 18:28164-28174. [PMID: 27711586 DOI: 10.1039/c6cp05514a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We studied the excited-state dynamics of trans-4-(N-arylamino)stilbenes with aryl = phenyl (p1H), 4-methoxyphenyl (p1OM), or 4-cyanophenyl (p1CN) in solvents of varied polarity and viscosity by using femtosecond transient absorption and time-correlated single photon counting techniques. In nonpolar solvents the decay is triexponential, in which the rapid component corresponds to vibrational cooling combined with solvation, the intermediate temporal component 41-120 ps to trans-cis isomerization, and the long one ∼1 ns to fluorescence decay of the S1 state. The S1 state has a delocalized geometry and charge-transfer characteristics, corresponding to a planar intramolecular charge transfer (PICT) state. In polar solvents, an excited-state absorption band appears near 520 and 480 nm for p1OM and p1CN, respectively but not for p1H. This band has a rise lifetime of 4.3/7.5, 16.3/9.4, and 29.5/16 ps for p1CN/p1OM in acetonitrile (ACN), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO), respectively and matches the decay of the 600 nm PICT band. This band is thus assigned to the absorption of a singlet twisted intramolecular charge transfer state (TICT). The conversion rate decreases as the solvent viscosity is increased and is consistent with a large structural variation amplitude. Theoretical calculations using density functional theory (DFT), method PEB0, were employed to obtain the optimized structures and energies of those states. The PICT state possesses delocalized π electrons along the molecule. The TICT for p1CN is formed by twisting about the aminostilbene-benzonitrile C-N bond by ∼90°, but it is about the stilbene-aniline C-N bond for p1OM. We observed faster conversion rates for p1CN in alcoholic solvents, in which the lifetimes for both the PICT and TICT states are shortened to 20-99 ps and 120-660 ps, respectively, as a result of solvent-solute H-bonding interactions. In p1OM, the TICT state has an elongated C[double bond, length as m-dash]C bond in the stilbene moiety, which might facilitate the trans-cis isomerization reaction and thus account for the relatively short lifetime of 58-420 ps in polar solvents.
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Affiliation(s)
- Hsuan-Hsiao Yao
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China.
| | - Hsu-Hsiang Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China.
| | - Chao-Han Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China.
| | - Cheng-Kai Lin
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, Republic of China.
| | - Jye-Shane Yang
- Department of Chemistry, National Taiwan University, Taipei, Taiwan 10617, Republic of China.
| | - I-Chia Chen
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China.
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90
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Zhao J, Dong H, Zheng Y. Theoretical Insights Into the Excited State Double Proton Transfer Mechanism of Deep Red Pigment Alkannin. J Phys Chem A 2018; 122:1200-1208. [DOI: 10.1021/acs.jpca.7b10492] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [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
| | - Yujun Zheng
- School of Physics, Shandong University, Jinan 250100, China
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91
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Hao J, Yang Y. Exploring the ESIPT dynamical processes of two novel chromophores: symmetrical structure CHC and asymmetric structure CHN. Org Chem Front 2018. [DOI: 10.1039/c7qo01127j] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The detailed ESIPT dynamical processes of CHC (symmetrical structure) and CHN (asymmetric structure) chromophores were revealed and compared using the TDDFT method at the B3LYP/6-31+G(d,p) level.
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Affiliation(s)
- Jiaojiao Hao
- State Key Laboratory of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Yang Yang
- State Key Laboratory of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
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92
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Ma C, Ou YQ, Chan CTL, Wong AKW, Chan RCT, Chung BPY, Jiang C, Wang ML, Kwok WM. Nonradiative dynamics determined by charge transfer induced hydrogen bonding: a combined femtosecond time-resolved fluorescence and density functional theoretical study of methyl dimethylaminobenzoate in water. Phys Chem Chem Phys 2018; 20:1240-1251. [DOI: 10.1039/c7cp05140a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen bonding with water alters nonradiative pathway of a twisted charge transfer state in methyl dimethylaminobenzoate.
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Affiliation(s)
- Chensheng Ma
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Yue-Qun Ou
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Chris Tsz-Leung Chan
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Allen Ka-Wa Wong
- Department of Applied Biology and Chemical Technology
- The Hong Kong Polytechnic University
- Kowloon
- P. R. China
| | - Ruth Chau-Ting Chan
- Department of Applied Biology and Chemical Technology
- The Hong Kong Polytechnic University
- Kowloon
- P. R. China
| | - Bowie Po-Yee Chung
- Department of Applied Biology and Chemical Technology
- The Hong Kong Polytechnic University
- Kowloon
- P. R. China
| | - Chao Jiang
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Ming-Liang Wang
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen
- P. R. China
| | - Wai-Ming Kwok
- Department of Applied Biology and Chemical Technology
- The Hong Kong Polytechnic University
- Kowloon
- P. R. China
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93
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Han J, Liu X, Li H, Yin H, Zhao H, Ma L, Song Y, Shi Y. The role played by ethanol in achieving the successive versus simultaneous mechanism of excited-state double proton transfer in dipyrido[2,3-a:3′,2′-i]carbazole. Phys Chem Chem Phys 2018; 20:26259-26265. [DOI: 10.1039/c8cp05716h] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The excited-state double proton transfer (ESDPT) process of dipyrido[2,3-a:3′,2′-i]carbazole (DPC) in ethanol (EtOH) solvent is investigated using density functional theory (DFT) and time-dependent density functional theory (TDDFT).
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Affiliation(s)
- Jianhui Han
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Xiaochun Liu
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Hui Li
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Hang Yin
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Huifang Zhao
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Lina Ma
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Yaodong Song
- College of Mathematics and Physics
- Fujian University of Technology
- Fuzhou 350118
- China
| | - Ying Shi
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
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94
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Han J, Liu X, Sun C, Li Y, Yin H, Shi Y. Ingenious modification of molecular structure effectively regulates excited-state intramolecular proton and charge transfer: a theoretical study based on 3-hydroxyflavone. RSC Adv 2018; 8:29589-29597. [PMID: 35547292 PMCID: PMC9085254 DOI: 10.1039/c8ra05812a] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Accepted: 08/09/2018] [Indexed: 12/16/2022] Open
Abstract
Harnessing ingenious modification of molecular structure to regulate excited-state intramolecular proton transfer (ESIPT) and intramolecular charge transfer (ICT) characteristics holds great promise in fluorescence sensing and imaging. Based on the 3-hydroxyflavone (3HF) molecule, 2-(2-benzo[b]furanyl)-3-hydroxychromone (3HB) and 2-(6-diethylamino-benzo[b]furan-2-yl)-3-hydroxychromone (3HBN) were designed by the extension of the furan heterocycle and the introduction of a diethylamino group. The analysis of important hydrogen bond length, frontier molecular orbitals, infrared spectra, and potential curves have cross-validated our results. The results indicate that proper site furan heterocycle extension and diethylamino donor group substitution not only shift the absorption and emission spectra to the red but also effectively modulate the excited-state dynamic behaviors. Strengthened ICT characteristics from 3HF to 3HB and to 3HBN make the occurrence of ESIPT increasingly difficult due to the higher energy barriers, which indicates that the ESIPT and ICT processes are competitive mechanisms. We envision that our work would open new windows for improving molecular properties and developing more fluorescent probes and organic radiation scintillators. Harnessing ingenious modification of molecular structure to regulate excited-state intramolecular proton transfer (ESIPT) and intramolecular charge transfer (ICT) characteristics holds great promise in fluorescence sensing and imaging.![]()
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Affiliation(s)
- Jianhui Han
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Xiaochun Liu
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Chaofan Sun
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - You Li
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Hang Yin
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Ying Shi
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
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95
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Yang D, Jia M, Wu J, Song X, Zhang Q. An analogy study on ESIPT reaction for 3BHC sensor between polar DMF and nonpolar toluene. CAN J CHEM 2017. [DOI: 10.1139/cjc-2017-0463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A comparison about excited state intramolecular proton transfer (ESIPT) mechanism of a new sensor 3-(1,3-benzothiazol-2-yl)-2-hydroxynaphthalene-1-carbaldehyde (3BHC) in polar solvent dimethylformamide (DMF) and nonpolar solvent toluene have been investigated within the framework of the time-dependent density functional theory (TD-DFT) method. The reproduced previous experimental absorption and emission spectra via our calculations reveals the reasonability of the DFT and TD-DFT theoretical level. The staple bond lengths, bond angles, and corresponding infrared vibrational spectra demonstrate that the intramolecular hydrogen bond of 3BHC should be strengthened in both polar DMF and nonpolar toluene. Two kinds of ESIPT mechanisms for different solvents have been put forward; there is a low potential barrier in the ESIPT process in the DMF solvent, whereas there is almost a nonbarrier for the ESIPT process in the toluene solvent. Hence, we could conclude that the ESIPT process of 3BHC sensor is more likely to occur in the nonpolar solvent upon the photoexcitation, based on which, the excited state behavior of 3BHC could be controlled.
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Affiliation(s)
- Dapeng Yang
- College of Mathematics and Information Science, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
- State Key Laboratory of Molecular Reaction Dynamics, Theoretical and Computational Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Min Jia
- College of Mathematics and Information Science, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
| | - Jingyuan Wu
- Measurement and Testing Institute of Mongolian Autonomous County of Fuxin, Fuxin, 123100, P. R. China
| | - Xiaoyan Song
- College of Mathematics and Information Science, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
| | - Qiaoli Zhang
- College of Mathematics and Information Science, North China University of Water Resources and Electric Power, Zhengzhou 450046, China
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96
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Tang Z, Wang Y, Bao D, Lv M, Yang Y, Tian J, Dong L. Theoretical Investigation of an Excited-State Intramolecular Proton-Transfer Mechanism for an Asymmetric Structure of 3,7-Dihydroxy-4-oxo-2-phenyl-4H-chromene-8-carbaldehyde: Single or Double? J Phys Chem A 2017; 121:8807-8814. [DOI: 10.1021/acs.jpca.7b08266] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhe Tang
- School
of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China
| | - Yi Wang
- School
of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Dongshuai Bao
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China
| | - Meiheng Lv
- State
Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, China
| | - Yi Yang
- School of Light Industry & Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jing Tian
- School
of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Liang Dong
- School
of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
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97
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Bao D, Wang M, Yang C, Yang Y, Ma X. Concerted Mechanisms of Excited-State Proton Intramolecular Transfer for Bis-2,4-(2-benzoxazolyl)-hydroquinone and Its Derivatives. J Phys Chem A 2017; 121:8217-8226. [PMID: 28994587 DOI: 10.1021/acs.jpca.7b07753] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The concerted mechanisms of excited state intramolecular proton transfer (ESIPT) of bis-2,4-(2-benzoxazolyl)-hydroquinone (BBHQ') and its derivatives (BBHQ'- and DHBO') have been investigated using the density functional theory (DFT) and the time-dependent density functional theory (TDDFT). The calculated absorption and emission spectra of BBHQ' and its derivatives are in good agreement with the experimental results. The calculated bond lengths, bond angles, and IR vibrational spectra linked with hydrogen bond of molecular BBHQ' in the S0 and S1 states demonstrate that the hydrogen bond is strengthened in the S1 state. Compared to BBHQ', BBHQ'- has a weak change of hydrogen bond between the S1 and S0 states. The calculation results show that there are three stable structures of BBHQ' in the S1 state. We find that the structure corresponding to the 481 nm fluorescence spectrum corresponds to BBHQ'-A rather than BBHQ'--K (Tetrahedron Lett., 2016, 57, 3518). The calculated frontier molecular orbitals (MOs) indicate the nature of the charge distribution and the trend of proton transfer of BBHQ'-A. The constructed potential energy surfaces of BBHQ' and DBHO' further elucidate the proposed mechanism that one-proton or two-proton transfer can happen (stepwise or synchronous) in the S1 states. The proposed ESIPT mechanism can provide a good explanation of the phenomenon of fluorescence quenching of BBHQ' and its derivatives. Finally, the weak interaction types are discriminated through the reduced density gradient (RDG) analyses of BBHQ' and BBHQ'-.
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Affiliation(s)
- Dongshuai Bao
- School of Physics and Optoelectronics Engineering, Ludong University , Yantai 264025, China
| | - Meishan Wang
- School of Physics and Optoelectronics Engineering, Ludong University , Yantai 264025, China
| | - Chuanlu Yang
- School of Physics and Optoelectronics Engineering, Ludong University , Yantai 264025, China
| | - Yunfan Yang
- State Key Lab of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, China
| | - Xiaoguang Ma
- School of Physics and Optoelectronics Engineering, Ludong University , Yantai 264025, China
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98
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Combined TDDFT and AIM Insights into Photoinduced Excited State Intramolecular Proton Transfer (ESIPT) Mechanism in Hydroxyl- and Amino-Anthraquinone Solution. Sci Rep 2017; 7:13766. [PMID: 29062001 PMCID: PMC5653788 DOI: 10.1038/s41598-017-14094-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 09/29/2017] [Indexed: 01/01/2023] Open
Abstract
Time-dependent density functional theory (TDDFT) and atoms in molecules (AIM) theory are combined to study the photoinduced excited state intramolecular proton transfer (ESIPT) dynamics for eight anthraquinones (AQs) derivatives in solution. The calculated absorption and emission spectra are consistent with the available experimental data, verifying the suitability of the theory selected. The systems with the excited-state exothermic proton transfer, such as 1-HAQ, 1,5-DHAQ and TFAQ, emit completely from transfer structure (T), while the reactions for those without ESIPT including 1,4-DHAQ and AAAQ appear to be endothermic. Three reaction properties of three systems (1,8-DHAQ, DCAQ and CAAQ) are between the exothermic and endothermic, sensitive to the solvent. Energy scanning shows that 1,4-DHAQ and AAAQ exhibit the higher ESIPT energy barriers compared to 1-HAQ, 1,5-DHAQ and TFAQ with the "barrierless" ESIPT process. The ESIPT process is facilitated by the strengthening of hydrogen bonds in excited state. With AIM theory, it is observed that the change in electrons density ρ(r) and potential energy density V(r) at BCP position between ground state and excited state are crucial factors to quantitatively elucidate the ESIPT.
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99
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Yang D, Jia M, Song X, Zhang Q. Elaborating the excited state behavior of 2-(4′-N,N-dimethylaminophenyl)-imidazo[4,5-c]pyridine coupling with methanol solvent. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Dapeng Yang
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian China
| | - Min Jia
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Xiaoyan Song
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Qiaoli Zhang
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
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100
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Yang D, Wu J, Jia M, Song X. A DFT/TDDFT Investigation of Excited State Dynamical Mechanism of (E)-1-((2,2-Diphenylhydrazono)methyl)naphthalen-2-ol. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700253] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dapeng Yang
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou 450046 China
- State Key Laboratory of Molecular Reaction Dynamics, Theoretical and Computational Chemistry, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
| | - Jingyuan Wu
- Measurement and Testing Institute of Mongolian Autonomous County of Fuxin; Fuxin 123100 P. R. China
| | - Min Jia
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou 450046 China
| | - Xiaoyan Song
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou 450046 China
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