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Jain A, De S, Haloi P, Barman P. The solvent-regulated excited state reaction mechanism of 2-(2'-hydroxyphenyl)benzothiazole aggregates. Photochem Photobiol Sci 2024; 23:65-78. [PMID: 38006523 DOI: 10.1007/s43630-023-00499-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 10/20/2023] [Indexed: 11/27/2023]
Abstract
The excited state relaxation dynamics of 2-(2'-hydroxyphenyl)benzothiazole (HBT) in the gas phase and the solvents have been explored experimentally and theoretically. However, the fundamental mechanism of its emission in aggregates is still unexplored. In this article, we have presented a detail investigation of solvent-regulated excited state (ES) reactions for HBT aggregates with the aid of several experimental and theoretical research. The careful investigation of solvatochromic and electrochemical behavior elucidates that the emission around 460 nm of HBT in DMSO and DMSO-water fraction correspond to the excited state internal charge transfer (ESICT). The quantum chemical analysis further supports this observation. The concentration-dependent 1H NMR and emission studies of HBT in DMSO revealed the formation of aggregates at higher concentrations that facilitate the charge transfer. The emission pattern of HBT in the AcN-water fraction demonstrates that the sequential internal charge transfer-proton transfer (ESICT-ESIPT) occurs in HBT aggregates. The pH studies show that HBT aggregates are potential ratiometric sensors for near-physiological pH ranges. Moreover, a ground-state zwitterionic conformation of HBT is observed in the basic medium formed by ground-state internal proton transfer (GSIPT). Overall, this study provides a better understanding of solvent-regulated ES reaction mechanism in the case of HBT aggregates and other substituted HBT compound aggregates published previously.
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Affiliation(s)
- Abhinav Jain
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India
| | - Soumik De
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India
| | - Pankaj Haloi
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India
| | - Pranjit Barman
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India.
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2
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Paul L, Das S. Dangling Water Molecules Bridge for ESIPT in Aggregated TMP: A Theoretical Study. J Phys Chem A 2023; 127:6892-6901. [PMID: 37614172 DOI: 10.1021/acs.jpca.3c02560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
We present a theoretical study on the occurrence of excited-state proton transfer in an aggregated structure of 2-(benzo[d]thiazol-2-yl)-6-methoxyphenol (TMP) exclusively in water among polar solvents, as reported in a recent experiment (Bhattacharyya, A. New J. Chem. 2019, 43, 15087). Our extensive investigation of the TMP monomer and dimer implementing density functional theory (DFT) and time-dependent density functional theory (TDDFT) methods, in three different solvents, namely, water, methanol, and dimethyl sulfoxide (DMSO), with explicit inclusion of solvent molecules demonstrated the existence of both enol and keto forms of the TMP dimer in the excited state, but only in water; this confirmed the experimental emission spectra completely and simultaneously validated the aggregation-induced emission phenomenon. Further analysis of various parameters such as potential energy scan (PES) of the hydroxyl (O-H) bond involved in hydrogen bonding, frontier molecular orbitals (FMOs), molecular electrostatic potential (MEP), and infrared (IR) stretching frequencies of both the monomer and dimer forms of TMP in different solvents clearly indicated the geometry of the dimer, with the arrangement of the solvent molecules to be the sole reason for the excited-state charge transfer. The bridging alignment of water molecules in between the stacked units of the TMP dimer results in intermolecular interactions, ultimately leading to intermolecular proton transfer in the excited state.
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Affiliation(s)
- Lopa Paul
- Biophysical Chemistry Laboratory, Physical Chemistry Section, Department of Chemistry, Jadavpur University, 188, Raja S.C. Mallick Rd, Kolkata 700032, India
| | - Suman Das
- Biophysical Chemistry Laboratory, Physical Chemistry Section, Department of Chemistry, Jadavpur University, 188, Raja S.C. Mallick Rd, Kolkata 700032, India
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3
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Cai H, Lu H, Liu B, Sun C, Zhao X, Zhao D. Regulating the photophysical properties of ESIPT-based fluorescent probes by functional group substitution: a DFT/TDDFT study. J Mol Model 2023; 29:126. [PMID: 37016199 DOI: 10.1007/s00894-023-05541-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 03/30/2023] [Indexed: 04/06/2023]
Abstract
CONTEXT In recent years, fluorescent probe technology has received more and more attention. However, the photophysical and photochemical properties of probe molecules still need to be further explored. This paper presents the excited state intramolecular proton transfer (ESIPT) processes and photophysical properties of the probe molecule 4-bromo-2-((E)-((Z)-((5-bromo-1H-indol-2-yl) methylene) hydrazono) methyl) phenol (BHPL) and its four derivatives (BHPL2, BHPL3, BHPL4, and BHPL5). Infrared spectra and geometric structure analyses revealed that introducing the -NH2 group on the benzene ring with the hydroxyl group will enhance the intramolecular hydrogen bond, which benefits the ESIPT process. Combining their absorption and fluorescence spectra, it can be concluded that BHPL2 and BHPL4 are both excellent probe candidates due to their large Stokes shift. The hole and electron and root mean square displacement analyses manifest that the fluorescence quenching of BHPL4 may be due to the intramolecular charge transfer process. Potential energy curves of BHPL and its four derivatives noted that ESIPT process of the BHPL2 is the most favorable to occur. The frontier molecular orbital and NBO analyses indicated that besides introducing electron-donating groups to reduce the energy gap and enhance fluorescence emission, introducing double electron-withdrawing groups can also achieve this effect, explaining why the energy barrier of ESIPT process for BHPL2 is lower than BHPL5. This work would provide the theoretical basis for designing novel fluorescence probes with more prominent properties. METHODS The ground (S0) and excited (S1) state structures of all compounds were optimized by density functional theory (DFT) and time-dependent (TDDFT) method, with B3LYP/6-311+G(d,p) level, respectively. The infrared spectra and potential energy curves were simulated at the same theoretical level. The reduced density gradient scatter plots and interaction region indicator isosurfaces were drawn using Multiwfn and VMD programs. The absorption and fluorescence spectra were simulated by the TDDFT/B3PW91/6-311+G(d,p) method. All the calculations in this work are carried out in Gaussian 16 program package.
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Affiliation(s)
- Hongda Cai
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, China
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, China
- Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Northeast Forestry University, Harbin, 150040, China
| | - Hui Lu
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, China
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, China
- Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Northeast Forestry University, Harbin, 150040, China
| | - Baipei Liu
- Aulin College, Northeast Forestry University, Harbin, 150040, China
| | - Chaofan Sun
- College of Science, Northeast Forestry University, Harbin, 150040, China
| | - Xiuhua Zhao
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, China.
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, China.
- Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Northeast Forestry University, Harbin, 150040, China.
| | - Dongmei Zhao
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, China.
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin, 150040, China.
- Heilongjiang Provincial Key Laboratory of Ecological Utilization of Forestry-Based Active Substances, Northeast Forestry University, Harbin, 150040, China.
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4
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Yang D, Yang W, Tian Y, Lv J. Unveiling the effects of atomic electronegativity on ESIPT behaviors for FQ-OH system: A theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 286:122007. [PMID: 36308825 DOI: 10.1016/j.saa.2022.122007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 10/05/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
In this work, we mainly focus on exploring the effects of atomic electronegativity on excited state intramolecular proton transfer (ESIPT) behavior for novel FQ-OH derivatives theoretically. Combining analyses of geometrical changes, infrared (IR) spectral variations, and bonding energies via band critical point (BCP) parameters, we clarify the excited state hydrogen bonding strength is enhancing with decrease of atomic electronegativity. In addition, photo-induced charge reorganization and different energy gap of momentous frontier molecular orbitals (MOs) further reflect intramolecular charge transfer (ICT) promotes ESIPT reaction. Low atomic electronegativity reveals excited state high kinetic dynamics and chemical activities. Via constructing potential energy curves (PECs) and searching transition state (TS), we clarify atomic electronegativity dependent ESIPT behavior for FQ-OH. Particularly, the modification of atomic electronegativity also plays critical roles in regulating UV-Vis spectra. This work not only uncovering detailed ESIPT mechanism for FQ-OH, but also presents a novel regulated mechanism via atomic electronegativity.
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Affiliation(s)
- Dapeng Yang
- College of Electronics and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, PR China.
| | - Wenpeng Yang
- College of Electronics and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, PR China
| | - Yanshan Tian
- College of Electronics and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, PR China
| | - Jian Lv
- College of Electronics and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, PR China
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5
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Kundu P, Chattopadhyay N. Coexistence of ground and excited state intramolecular proton transfer of the Schiff base 2-((E)-(naphthalene-3-ylimino)-methyl)phenol: A combined experimental and computational study. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114296] [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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6
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TDDFT investigation of solvent polarity related excited state intramolecular proton transfer in 2-(4′-hydroxyphenyl)-3-hydroxybenzo[g]quinolone. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Cao Y, Shang C, Zheng Z, Sun C. Substituent derivatives of benzothiazole-based fluorescence probes for hydrazine with conspicuous luminescence properties: A theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 279:121449. [PMID: 35660153 DOI: 10.1016/j.saa.2022.121449] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 05/02/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
In the present work, four probe molecules for detecting hydrazine have been designed based on the 2-(4-Acetoxy-3-benzothiazole-2-yl-phenyl)-4-methyl-thiazole- 5-carboxylic acid ethyl ester (HP1) to investigate the influence of the amino and cyano groups on the excited-state intramolecular proton transfer (ESIPT) behavior and photophysical properties. The changes in hydrogen bond strength indicate that the intramolecular hydrogen bond of all probe products is enhanced upon photoexcitation. Frontier molecular orbitals (FMOs) and natural bond orbital (NBO) reveal the driving force of ESIPT. In addition, the potential energy curves and transition state theory explain the reason for the single fluorescence phenomenon in the experiment. The simulated absorption and fluorescence spectra of HP1 and its product (HPP1) are completely consistent with the experimental results, which also verify the viewpoint. Meanwhile the cyano derivative HPP4 exhibits a larger Stokes-shift (201 nm) than that of HPP1 (145 nm) and has the same low energy barrier as HPP1. These excellent properties allow HPP4 to be a fluorescent probe with superior performance than the original molecule. In conclusion, this work can provide a theoretical basis for the design and synthesis of more sensitive fluorescent probes for the detection of hydrazine.
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Affiliation(s)
- Yunjian Cao
- College of Science, Northeast Forestry University, Harbin 150040, China
| | - Changjiao Shang
- College of Science, Northeast Forestry University, Harbin 150040, China
| | - Zefei Zheng
- Aulin College, Northeast Forestry University, Harbin 150040, China
| | - Chaofan Sun
- College of Science, Northeast Forestry University, Harbin 150040, China.
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8
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Jia M, Xu K, Lv J, Yang D. Theoretical study of the atomic electronegativity effects on the ESIPT of 4-methoxy-3-hydroxyflavone derivatives. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Shang C, Cao Y, Sun C, Li Y. Unveiling the influence of atomic electronegativity on the double ESIPT processes of uralenol: A theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 268:120660. [PMID: 34857463 DOI: 10.1016/j.saa.2021.120660] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
In this work, the effects of atomic electronegativity (O, S, and Se atoms) on the competitive double excited-state intramolecular proton transfer (ESIPT) reactions and photophysical characteristics of uralenol (URA) were systematically explored by using the density functional theory (DFT) and time-dependent DFT (TD-DFT) methods. The calculated hydrogen bond parameters, infrared (IR) vibrational spectra, reduced density gradient (RDG) scatter plots, interaction region indicator (IRI) isosurface and topology parameters have confirmed the six-membered intramolecular hydrogen bond (IHB) O4H5…O3 is the stronger one in all the three studied compounds. Subsequently, frontier molecular orbitals (FMOs) and natural bond orbital (NBO) population analysis essentially uncover that the electron redistribution has induced the ESIPT process. Besides, the constructed potential energy curves (PECs) have indicated that the ESIPT process prefers to occur along the O4H5…O3 rather than the O1H2…O3 and the proton-transfer energy barrier is gradually decreased with the weakening of atomic electronegativity from URA to URA-S and URA-Se. In a conclusion, the attenuating of atomic electronegativity has enhanced the IHBs of URA and thereby promoting the ESIPT reaction, which is helpful for further developing novel fluorophores based on ESIPT behavior in the future.
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Affiliation(s)
- Changjiao Shang
- College of Science, Northeast Forestry University, Harbin 150040, Heilongjiang, China
| | - Yunjian Cao
- College of Science, Northeast Forestry University, Harbin 150040, Heilongjiang, China
| | - Chaofan Sun
- College of Science, Northeast Forestry University, Harbin 150040, Heilongjiang, China.
| | - Yuanzuo Li
- College of Science, Northeast Forestry University, Harbin 150040, Heilongjiang, China.
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10
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Yang D, Yang W, Tian Y, Zheng R. Regulating the excited state behaviors of 2-benzooxazol-2-yl-4,6-di-tert-butyl-phenol fluorophore by solvent polarity: a theoretical simulation. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111513] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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11
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Li Y, Cao B, Zhou Q, Zhang X, Li B, Su X, Shi Y. Enhancing fluorescence of benzimidazole derivative via solvent-regulated ESIPT and TICT process: A TDDFT study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 258:119862. [PMID: 33957448 DOI: 10.1016/j.saa.2021.119862] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/14/2021] [Accepted: 04/18/2021] [Indexed: 06/12/2023]
Abstract
In this work, we use density functional theory and time dependent density functional theory to explore the ESIPT and TICT process of 6-(1H-Benzoimidazol-2-yl)-2,3-dimethoxy-phenol (BIDOP) in cyclohexane (CHX) and tetrahydrofuran (THF) solvent, respectively. It reveals that ESIPT process of BIDOP can occur in both CHX and THF solvent at the first excited state with similar reaction barrier. Remarkably, compared to barrierless from keto (K*) to TICT state of BIDOP in THF solvent, the reaction barrier between K* and TICT state is up to 20.28 kcal/mol for in CHX that TICT process is inhibited in CHX solvent. The absence of nonradiative decay TICT state of BIDOP in CHX solvent induces higher fluorescence in CHX compared to in THF solvent. These findings indicate that CHX solvent can effectively enhance fluorescence of BIDOP. Our study highlights a convenient approach for enhancing fluorescence and is significant for photophysics and photobiology field.
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Affiliation(s)
- You Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Bifa Cao
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Qiao Zhou
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Xin Zhang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Bo Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Xing Su
- 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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12
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Nelson M, Muniyasamy H, Kubendran AM, Balasubramaniem A, Sepperumal M, Ayyanar S. Carbazole based fluorescent chemosensor for the meticulous detection of tryptamine in aqueous medium and its efficacy in cell-imaging and molecular logic gate. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116445] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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13
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Ji F, Guo Y, Wang M, Wang C, Wu Z, Wang S, Wang H, Feng X, Zhao G. New insights into ESIPT mechanism of three sunscreen compounds in solution: A combined experimental and theoretical study. Colloids Surf B Biointerfaces 2021; 207:112039. [PMID: 34416444 DOI: 10.1016/j.colsurfb.2021.112039] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/27/2021] [Accepted: 08/12/2021] [Indexed: 01/29/2023]
Abstract
In this present work, we have successfully designed and investigated three flavonoid sunscreen compounds. Based on steady-state spectroscopy and time-dependent density functional theory (TDDFT), the mechanism of excited state intramolecular proton transfer (ESIPT) of sunscreen compounds was studied. The calculated UV-vis absorption spectra and fluorescence emission spectra are in good agreement with the experimental results in methanol solution. The potential energy curve demonstrates that the ESIPT process can easily occur in the three sunscreen compounds without energy barrier. Therefore, the absorbed excitation energy can get back to the ground state through a non-radiative relaxation process. Light stability tests ensure that the three flavonoids have the potential as sunscreens. This work provides not only an application of the ESIPT process in sunscreen mechanisms, but also a theory basis for the development of novel sunscreen molecules.
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Affiliation(s)
- Feixiang Ji
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, 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
| | - Yurong Guo
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, 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
| | - Mengqi Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, 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
| | - Chao Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, 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
| | - Zibo Wu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, 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
| | - Shiping Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, 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
| | - Haiyuan Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, 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
| | - Xia Feng
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Institute of Chemistry, 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, Institute of Chemistry, 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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14
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Bhattacharyya A, Guchhait N. Proton transfer inhibited charge transfer in a coumarinyl chalcone: Hassle free detection of chloroform vapor in alcohol medium and in neat solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 253:119578. [PMID: 33639476 DOI: 10.1016/j.saa.2021.119578] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 01/24/2021] [Accepted: 01/30/2021] [Indexed: 06/12/2023]
Abstract
The photophysical aspects of a synthesized coumarinyl chalcone derivative 3-((2E, 4E)-5-(4-(dimethylamino) phenyl) penta-2, 4-dienoyl)-4-hydroxy-2H-chromen-2-one (DPPHC) were explored. DPPHC shows excited state intramolecular proton transfer (ESIPT) suppressed excited state intramolecular charge transfer (ESICT) as evidenced from steady state and time resolved spectroscopic analysis. Interestingly, DPPHC behaves as a strong red emitter solely in chloroform and dichloromethane semi-polar solvents exclusively. Using this property, on-spot detection of these two solvents was achieved in paper strips coated with DPPHC as well as in spiked alcohol samples by emission ratiometry change.
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Affiliation(s)
| | - Nikhil Guchhait
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India.
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15
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Zhao J, Jin B. Solvent polarity dependent excited state hydrogen bond effects and intramolecular double proton transfer mechanism for 2-hydroxyphenyl-substituted benzo[1,2-d:4,5-d']bisimidazole system. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 250:119394. [PMID: 33422870 DOI: 10.1016/j.saa.2020.119394] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/19/2020] [Accepted: 12/24/2020] [Indexed: 06/12/2023]
Abstract
In this work, we probe into the photo-induced excited state hydrogen bonding interactions and excited state proton transfer (ESPT) behaviors for a representative benzo[1,2-d:4,5-d']bisimidazole derivative (i.e., 2-hydroxyphenyl-substituted benzo[1,2-d:4,5-d']bisimidazole (HPBB)) compound. In view of aprotic solvents with different polarities, cyclohexane (CYH), dichloromethane (DCM) and acetonitrile (MeCN) solvents are considered. Analyzing hydrogen-bond geometrical parameters, infrared (IR) vibrational spectra, Mayer bond order and predicting hydrogen bonding energy (E(HB)), we verify dual hydrogen bonds of HPBB are strengthened in S1 state. Particularly, in nonpolar solvent, the enhanced excited state hydrogen bonds become more obvious. The intriguing charge redistribution and frontier molecular orbitals (MOs) reveal hydrogen bonding acceptance ability of acceptor moieties becomes stronger, which plays a crucial role in capturing hydroxyl proton via photoexcitation. To check and explore ESIPT mechanism, we present the solvent polarity dependent asynchronous excited state intramolecular double proton transfer (ESIDPT) mechanism. That is, nonpolar solvent promotes excited state intramolecular single proton transfer (ESISPT) process for HPBB, while polar solvent contributes to ESIDPT behavior with the primary single proton-transfer product in S1 state. This work not only makes a rational attribution to experimental phenomena, but also clarifies detailed excited state behaviors for HPBB and presents regulating ESIPT mechanism via solvent polarity.
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Affiliation(s)
- Jinfeng Zhao
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266235, PR China
| | - Bing Jin
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266235, PR China.
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16
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The effects of different substitution heterocycles on ESIPT processes for three 2-(2′-hydroxybenzofuran)-benzoxazole compounds. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2020.111081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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17
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Sukpattanacharoen C, Kungwan N. Theoretical insights of solvent effect on excited-state proton transfers of 2-aryl-3-hydroxyquinolone. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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18
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Yang G, Chen K, Jin X, Yang D. Uncovering photo-excited intramolecular charge transfer and ESIPT mechanism for 5,5′-(9,9-dioctyl-9H-fluorene-2,7-diyl) bis(2-benzo[d]thiazol-2-yl) phenol compound. Mol Phys 2021. [DOI: 10.1080/00268976.2020.1805130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Guang Yang
- Basic Teaching Department, Jiaozuo University, Jiaozuo, People’s Republic of China
| | - Kaifeng Chen
- Basic Teaching Department, Jiaozuo University, Jiaozuo, People’s Republic of China
| | - Xiaofeng Jin
- Basic Teaching Department, Jiaozuo University, Jiaozuo, People’s Republic of China
| | - Dapeng Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People People’s Republic of China
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19
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Li J, Feng S, Feng X, Yang D. Revelation of
ESIPT
mechanism for the novel fluorescent system
HNIBT
in toluene and methanol solvents: A
TDDFT
study. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202000244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Junyu Li
- College of Physics and Electronic Engineering Zhengzhou University of Light Industry Zhengzhou P. R. China
| | - Shiquan Feng
- College of Physics and Electronic Engineering Zhengzhou University of Light Industry Zhengzhou P. R. China
| | - Xuechao Feng
- College of Physics and Electronic Engineering Zhengzhou University of Light Industry Zhengzhou P. R. China
| | - Dapeng Yang
- School of Physics and Electronics North China University of Water Resources and Electric Power Zhengzhou P. R. China
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20
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Yang G, Chen K, Jin X, Yang D. Photo‐excited intramolecular charge transfer and excited state intramolecular proton transfer behaviors for
HPIBT
system: A theoretical investigation. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Guang Yang
- Basic Teaching Department Jiaozuo University Jiaozuo People's Republic of China
| | - Kaifeng Chen
- Basic Teaching Department Jiaozuo University Jiaozuo People's Republic of China
| | - Xiaofeng Jin
- Basic Teaching Department Jiaozuo University Jiaozuo People's Republic of China
| | - Dapeng Yang
- Group 1101, State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian People's Republic of China
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21
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Yang G, Chen K, Wang G, Yang D. TDDFT investigation on electronically excited-state hydrogen-bonding properties and ESIPT mechanism for the 2-(1H-imidazol-2-yl)-phenol compound. Struct Chem 2020. [DOI: 10.1007/s11224-020-01648-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Yang G, Chen K, Jin X, Yang D. Theoretical investigation of excited state charge and proton transfer mechanism for the novel 10‐methyl‐indolo[2,3‐a]‐indolo[2,3‐a′]acridone molecule. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Guang Yang
- Basic Teaching DepartmentJiaozuo University Jiaozuo China
| | - Kaifeng Chen
- Basic Teaching DepartmentJiaozuo University Jiaozuo China
| | - Xiaofeng Jin
- Basic Teaching DepartmentJiaozuo University Jiaozuo China
| | - Dapeng Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian China
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23
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Li J, Feng S, Xu L, Feng X. Fluoride anion sensing mechanism of 2‐(quinolin‐2‐yl)‐3‐hydroxy‐4
H
‐chromen‐4‐one chemosensor based on inhibition of excited state intramolecular ultrafast proton transfer. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Junyu Li
- College of Physics and Electronic Engineering Zhengzhou University of Light Industry Zhengzhou China
| | - Shiquan Feng
- College of Physics and Electronic Engineering Zhengzhou University of Light Industry Zhengzhou China
| | - Liancai Xu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou China
| | - Xuechao Feng
- College of Physics and Electronic Engineering Zhengzhou University of Light Industry Zhengzhou China
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24
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Ghanavatkar CW, Mishra VR, Sekar N. Benzothiazole-pyridone and benzothiazole-pyrazole clubbed emissive azo dyes and dyeing application on polyester fabric: UPF, biological, photophysical and fastness properties with correlative computational assessments. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 230:118064. [PMID: 31955124 DOI: 10.1016/j.saa.2020.118064] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
Positional isomers of benzothiazole-pyridone and benzothiazole-pyrazole containing disperse azo dyes are reported. These heterocyclic azo dyes are decorated with 'separate ESIPT core' and show emission in seven solvents of different polarity. After application on polyester fabric, "very good to excellent" light and washing fastness properties were observed. Thermal stability of 'dyed fabric' was analysed by sublimation fastness test- and found 'very good to excellent' ratings at 210 °C. Ultraviolet Protection Factor (UPF) analysis of four 'dyed fabric' indicates the blocking 96-97% of UV radiation. Dyes were found effective on gram positive and negative bacteria by agar diffusion method and all the 'dyed fabrics' also showed more than 92% or 94% reduction of S. aureus or K. pneumoniae respectively by 'AATCC 100' method. Structures of the dyes were optimized using Density Functional Theory (DFT) to deduce stable tautomeric form. Calculated HOMO-LUMO gap is then compared with antibacterial activities. Electrophilicity index and lightfastness property were also compared and found to have very good correlation.
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Affiliation(s)
- Chaitannya W Ghanavatkar
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400 019, Maharashtra, India
| | - Virendra R Mishra
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400 019, Maharashtra, India
| | - Nagaiyan Sekar
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga (E), Mumbai 400 019, Maharashtra, India.
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25
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Yang D, Liu W, Kong L, Zhang Q, Liu Y. Ultrafast excited state intramolecular proton transfer (ESIPT) mechanism for 2,6-bis(benzothiazolyl-2-yl)phenol: A theoretical investigation. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137226] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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26
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Wang J, Liu Q, Yang D. Theoretical insights into excited-state hydrogen bonding effects and intramolecular proton transfer (ESIPT) mechanism for BTS system. Sci Rep 2020; 10:5119. [PMID: 32198439 PMCID: PMC7083891 DOI: 10.1038/s41598-020-61804-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 03/03/2020] [Indexed: 12/02/2022] Open
Abstract
In this work, N,N'-bis(salicylidene)-(2-(3',4'-diaminophenyl)benzothiazole) (named as "BTS") system was studied about its excited-state intramolecular proton transfer (ESIPT) process. The analyses about reduced density gradient (RDG) reveal the formation of two intramolecular hydrogen bonds in BTS system. Bond lengths and angles, infrared (IR) vibrations as well as frontier molecular orbitals (MOs) using TDDFT method indicate that the strength of hydrogen bond should be enhanced in the S1 state. Particularly, hydrogen bond O1-H2···N3 undergoes larger variations compared with O4-H5···N6, which infers that hydrogen bond O1-H2···N3 may play a decisive role in the ESIPT process of BTS system. Given the two hydrogen bonds of BTS molecule, two types of potential energy curves have been constructed, which confirms that only single proton transfer process occurs due to lower energy barrier along with O1-H2···N3 rather than O4-H5···N6. This work not only presents a reasonable explanation for previous experiment, but also clarifies the specific ESIPT mechanism for BTS system.
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Affiliation(s)
- Jiemin Wang
- Department of Physics & Electronic Information, Luoyang Normal University, Luoyang, 471934, P.R. China.
- Henan Key laboratory of Electromagnetic Transformation and Detection, Luoyang, 471934, P.R. China.
| | - Qiang Liu
- Department of Physics & Electronic Information, Luoyang Normal University, Luoyang, 471934, P.R. China
- Henan Key laboratory of Electromagnetic Transformation and Detection, Luoyang, 471934, P.R. China
| | - Dapeng Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P.R. China
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27
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Yang G, Jin X, Chen K, Yang D. Hydrogen bonding interactions induced excited state proton transfer and fluoride anion sensing mechanism for 2‐(3,5‐dichloro‐2,6‐dihydroxy‐phenyl)‐benzoxazole‐5‐carboxylicacid. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Guang Yang
- Basic Teaching DepartmentJiaozuo University Jiaozuo China
| | - Xiaofeng Jin
- Basic Teaching DepartmentJiaozuo University Jiaozuo China
| | - Kaifeng Chen
- Basic Teaching DepartmentJiaozuo University Jiaozuo China
| | - Dapeng Yang
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou China
- State Key Laboratory of Molecular Reaction DynamicsDalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian China
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28
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Mirochnik AG, Yu A, Beloliptsev, Fedorenko EV. Dual Luminescence of 1‐(9‐Anthryl)Butane‐1,3‐dione. ChemistrySelect 2020. [DOI: 10.1002/slct.201904327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anatolii G. Mirochnik
- Institute of Chemistry Far Eastern Branch of the Russian Academy of Sciences 159, Prosp. 100-letiya Vladivostoka Vladivostok 690022 Russian Federation
| | - Anton Yu
- Institute of Chemistry Far Eastern Branch of the Russian Academy of Sciences 159, Prosp. 100-letiya Vladivostoka Vladivostok 690022 Russian Federation
| | - Beloliptsev
- Institute of Chemistry Far Eastern Branch of the Russian Academy of Sciences 159, Prosp. 100-letiya Vladivostoka Vladivostok 690022 Russian Federation
| | - Elena V. Fedorenko
- Institute of Chemistry Far Eastern Branch of the Russian Academy of Sciences 159, Prosp. 100-letiya Vladivostoka Vladivostok 690022 Russian Federation
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29
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Teixeira Gomes JV, Cherem Peixoto da Silva A, Lamim Bello M, Rangel Rodrigues C, Aloise Maneira Corrêa Santos B. Molecular modeling as a design tool for sunscreen candidates: a case study of bemotrizinol. J Mol Model 2019; 25:362. [PMID: 31773345 DOI: 10.1007/s00894-019-4237-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 10/16/2019] [Indexed: 11/28/2022]
Abstract
Sunscreen-based photoprotection is an important strategy to prevent photoaging and skin cancer. Among the effective and modern sunscreens, triazine compounds are known as an important class based on their physical-chemical properties, such as photostability and UV broad-spectrum absorption (UVA and UVB). Molecular modeling and quantum mechanical calculations approaches can be helpful to orientate the design of sunscreens. Herein, a case study is presented to demonstrate the importance of the molecular modeling as a design tool for promising sunscreen candidates based on the synthesis research previously described of bemotrizinol, a broad-spectrum photostable organic UV filter present in many sunscreens products. Time-dependent density functional theory (TD-DFT) calculations performed in gas phase on the isolated organic UV filters proved to reproduce the experimental UV absorption, guiding the choice of the most efficient candidate as sunscreen. The present work highlights the importance of molecular modeling as an effective tool to support synthesis research, increasing the possibility of obtaining promising compounds with reduced costs and effluent production. Graphical abstractA case study to demonstrate the importance of the molecular modeling as a design tool for promising sunscreen candidates is presented. The method proved to be a valuable tool to reproduce the experimental UV absorption and to determinate the most efficient molecule as sunscreen among the candidates.
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Affiliation(s)
- João Victor Teixeira Gomes
- Laboratório de Planejamento Farmacêutico e Simulação Computacional (LaPFarSC), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Anne Cherem Peixoto da Silva
- Laboratório de Planejamento Farmacêutico e Simulação Computacional (LaPFarSC), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Murilo Lamim Bello
- Laboratório de Planejamento Farmacêutico e Simulação Computacional (LaPFarSC), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Carlos Rangel Rodrigues
- Laboratório de Modelagem Molecular & QSAR (ModMolQSAR), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil
| | - Bianca Aloise Maneira Corrêa Santos
- Laboratório de Planejamento Farmacêutico e Simulação Computacional (LaPFarSC), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil.
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30
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Ni M, Su S, Fang H. Excited state intramolecular proton transfer via different size of hydrogen bond ring: a theoretical insight. Theor Chem Acc 2019. [DOI: 10.1007/s00214-019-2512-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Zheng D, Li H, Zhang M, Liu X, Yang D. The revelation of ESIPT behavior and fluoride response mechanism for (E)‐2‐(((1H‐benzo[d]imidazol‐2‐yl)‐imino)methyl)‐5‐(dimethylamino)‐phenol. J PHYS ORG CHEM 2019. [DOI: 10.1002/poc.4029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Dan Zheng
- College of ScienceHenan Agriculture University Zhengzhou P. R. China
| | - Hui Li
- College of ScienceHenan Agriculture University Zhengzhou P. R. China
| | - Mengjiao Zhang
- College of ScienceHenan Agriculture University Zhengzhou P. R. China
| | - Xiaobiao Liu
- College of ScienceHenan Agriculture University Zhengzhou P. R. China
| | - Dapeng Yang
- State Key Laboratory of Molecular Reaction DynamicsDalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian P. R. China
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32
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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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33
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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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34
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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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35
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Liu S, Zhao Y, Zhang C, Lin L, Li Y, Song Y. The novel excited state intramolecular proton transfer broken by intermolecular hydrogen bonds in HOF system. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 219:164-172. [PMID: 31035126 DOI: 10.1016/j.saa.2019.04.053] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/13/2019] [Accepted: 04/19/2019] [Indexed: 06/09/2023]
Abstract
2-(4-(Dimethylamino)phenyl)-3-hydroxy-6,7-dimethoxy-4Hchromen-4-one (HOF) was synthesized in experiment (Wang et al., Sensor. Actuat. B-Chem. 277 (2018) 484), and its photophysical and photochemical properties was reported. However the corresponding full theoretical interpretation of mechanisms is inadequate. In the present research, the intermolecular hydrogen bond structure of HOF-methanol complex (HOF-2M) was found, and mechanism of alcohols monitoring of HOF was deeply studied using the density functional theory (DFT) and time-dependent density functional theory (TDDFT). The enhancing mechanism of the excited state hydrogen bond is verified by analyzing the hydrogen bond parameters, infrared spectra and frontier molecular orbitals. Importantly, the reduced density gradient visual analysis and topological quantificational analysis confirm that the intramolecular hydrogen bond of HOF is broken by strong intermolecular hydrogen bonds of HOF-2M using the Atoms-In-Molecule theory. The obtained absorption and emission spectra are found to agree well with the experimental results and the complete quenched keto-emission in methanol and ethanol solvents provide a suitable sensing mechanism for detecting alcohols. The reaction path of the excited state intramolecular proton transfer for HOF is explained in detail through the constructed potential energy curves.
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Affiliation(s)
- Songsong Liu
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Yu Zhao
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China; Department of Physics, Liaoning University, Shenyang 110036, 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
| | - Lili Lin
- Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Yongqing Li
- Department of Physics, Liaoning University, Shenyang 110036, 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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36
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A theoretical investigation on the excited state intramolecular single or double proton transfer mechanism of a salicyladazine system. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201800490] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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37
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Yang D, Zhao Z, Jia M, Song X, Zhang Q, Zhang T. The investigation of proton transfer and fluorescence‐sensing mechanisms of [2‐(2‐hydroxy‐phenyl)‐1H‐benzoimidazol‐5‐yl]‐phenyl‐methanone. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201800380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- 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
| | - Zhongjian Zhao
- Office of Teaching AffairsNorth China University of Water Resources and Electric Power Zhengzhou P. R. China
| | - 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
| | - Qiaoli Zhang
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou P. R. China
| | - Tianjie Zhang
- College of Physics and ElectronicsNorth China University of Water Resources and Electric Power Zhengzhou P. R. China
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38
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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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39
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Lv J, Yang G, Jia M, Zhao J, Song X, Zhang Q. A theoretical study on the excited-state intramolecular proton transfer mechanism of 4′-dimethylaminoflavonol chemosensor. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201800208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jian Lv
- 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
| | - Jinfeng Zhao
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 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
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40
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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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41
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Jia M, Yang G, Guo Y, Song X, Zhang Q, Yang D. The sensing mechanism of fluoride anion for a novel molecule D2: Desilylation and intramolecular charge transfer. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Min Jia
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Guang Yang
- Basic Teaching Department; Jiaozuo University; Jiaozuo China
| | - Yuanyuan Guo
- School of Mechanical Engineering; Liaoning Shihua University; Fushun 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
| | - 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
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42
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Yang D, Yang G, Jia M, Song X, Zhang Q. Theoretical insight into the excited-state behavior of a novel Compound 1: A TDDFT investigation. J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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
| | - Guang Yang
- Basic Teaching Department; Jiaozuo University; Jiaozuo 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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43
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Yang D, Yang G, Jia M, Song X, Zhang Q. Comparing the substituent effects about ESIPT process for HBO derivatives. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.03.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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44
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Babu SS, Shanmugam S. Metal-Free γ,δ
-Unsaturated β
-Ketothiolester: Solvatochromism, AIEE and Detection of Picric Acid. ChemistrySelect 2018. [DOI: 10.1002/slct.201702805] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Sivakumar Shanmugam
- Department of Organic Chemistry; School of Chemistry; Madurai Kamaraj University; Madurai 625021 India
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45
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Tong Y, Mei W, Ma J. Theoretical insight into the excited-state proton transfer process: Role of the substituent -CN on HBT system. J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3832] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yuping Tong
- School of Civil Engineering and Communication; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Wanwan Mei
- School of Civil Engineering and Communication; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Juntao Ma
- School of Civil Engineering and Communication; North China University of Water Resources and Electric Power; Zhengzhou China
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46
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Lu X, Zhai Y, Zhang M, Song Y. A theoretical study on the ESPT mechanism for a novel Bis-HPBT fluorophore. J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3821] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xuemei Lu
- School of Metallurgy; Northeastern University; Shenyang China
| | - Yuchuan Zhai
- School of Metallurgy; Northeastern University; Shenyang China
| | - Meixia Zhang
- Department of Physics; Liaoning University; Shenyang China
| | - Yuzhi Song
- College of Physics and Electronics; Shandong Normal University; Jinan China
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47
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Sun C, Zhao H, Liu X, Yin H, Shi Y. Tunable ESIPT reaction and antioxidant activities of 3-hydroxyflavone and its derivatives by altering atomic electronegativity. Org Chem Front 2018. [DOI: 10.1039/c8qo00998h] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
3-HTF easiest to carry out ESIPT reaction would exhibit the highest efficient antioxidant activity among the three compounds.
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Affiliation(s)
- Chaofan Sun
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Huifang Zhao
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012
- China
| | - Xiaochun Liu
- 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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48
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Wei Q, Wang J, Zhao M, Zhang M, Song Y, Song P. A theoretical investigation on excited-state single or double proton transfer process for aloesaponarin I. CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0533] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The excited-state proton transfer (ESPT) dynamical behavior of aloesaponarin I (ASI) was studied using density functional theory (DFT) and time-dependent DFT (TDDFT) methods. Our calculated vertical excitation energies based on TDDFT reproduced the experimental absorption and fluorescence spectra well [Nagaoka et al. J. Phys. Chem. B, 117, 4347 (2013)]. Two intramolecular hydrogen bonds were confirmed to be strengthened in the S1 state, which makes ESPT possible. Herein, the ESPT process is more likely to happen, along with one hydrogen bond (O1–H2⋯O3). Qualitative analyses about charge distribution further demonstrate that the ESPT process could occur because of the intramolecular charge transfer. Our constructed potential energy surfaces of both S0 and S1 states show that a single proton transfer reactive is more reasonable along with the intramolecular hydrogen bond (O1–H2⋯O3) rather than O4–H5⋯O6 in the S1 stated potential energy surface. Then, ASI-SPT* decays to the ground state with a 640 nm fluorescence; subsequently, the ASI-SPT form shows that reverse ground state single-proton transfer back to the ASI structure occurs. Particularly, dependent on relatively accurate potential energy barriers among these excited-state stable structures, we confirmed the excited-state single proton transfer process rather than using the controversial nodal plane model.
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Affiliation(s)
- Qiang Wei
- School of Optoelectronic Information, Chongqing University of Technology, Chongqing 400050, P.R. China
| | - Jiyu Wang
- Department of Physics, Liaoning University, Shenyang 110036, P.R. China
| | - Meiyu Zhao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, P.R. China
| | - Meixia Zhang
- Department of Physics, Liaoning University, Shenyang 110036, P.R. China
| | - Yuzhi Song
- College of Physics and Electronics, Shandong Normal University, Jinan, 250015, P.R. China
| | - Peng Song
- Department of Physics, Liaoning University, Shenyang 110036, P.R. China
- Liaoning Key Laboratory of Semiconductor Light Emitting and Photocatalytic Materials, Liaoning University, Shenyang 110036, P.R. China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P.R. China
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49
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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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50
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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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