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Han J, Cui H, Du B, Zheng Y, Feng G, Ye J. Liquid-solid phase regulating excited-state intramolecular proton transfer process of HBT-d-NO 2: A QM/MM study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 298:122804. [PMID: 37167801 DOI: 10.1016/j.saa.2023.122804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/10/2023] [Accepted: 04/26/2023] [Indexed: 05/13/2023]
Abstract
The excited-state intramolecular proton transfer process of 2-(1,3-benzothiazol-2-yl)-4-[2-(4-nitrophenyl)ethynyl]phenol (HBT-d-NO2) in the different surrounding environment is investigated using density functional theory (DFT) and time-dependent density functional theory (TDDFT). The optimized molecular structure provides convincing evidence that the intramolecular hydrogen bond is strengthened in the first excited (S1) state. The frontier molecular orbitals observed the HBT-d-NO2 exists obvious intramolecular charge translate phenomenon. The results of the potential energy curve show that HBT-d-NO2 is difficult to undergo proton transfer in the ground (S0) state due to the high energy barrier, while it becomes easier in the S1 state in both liquid and solid phases. By comparison, the energy barrier of ESIPT in the solid phase is higher than that in the liquid phase. We can conclude that the solid phase effectively hinders the ESIPT process compared with that the liquid phase. In this work, we illustrate the influence of liquid and solid phases on the intramolecular proton transfer process, which could promote further developments in biomedical and fluorophore applications.
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Affiliation(s)
- Jianhui Han
- State Key Laboratory of Laser Propulsion & Application, Department of Aerospace Science Technology, Space Engineering University, Beijing 101416, China.
| | - Haichao Cui
- State Key Laboratory of Laser Propulsion & Application, Department of Aerospace Science Technology, Space Engineering University, Beijing 101416, China
| | - Baosheng Du
- State Key Laboratory of Laser Propulsion & Application, Department of Aerospace Science Technology, Space Engineering University, Beijing 101416, China
| | - Yongzan Zheng
- State Key Laboratory of Laser Propulsion & Application, Department of Aerospace Science Technology, Space Engineering University, Beijing 101416, China
| | - Gaoping Feng
- State Key Laboratory of Laser Propulsion & Application, Department of Aerospace Science Technology, Space Engineering University, Beijing 101416, China
| | - Jifei Ye
- State Key Laboratory of Laser Propulsion & Application, Department of Aerospace Science Technology, Space Engineering University, Beijing 101416, China
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2
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Stewart DJ, Kannan R, Grusenmeyer TA, Artz JM, Long SL, Yu Z, Cooper TM, Haley JE, Tan LS. Effects of intramolecular hydrogen bonding and sterically forced non-coplanarity on organic donor/acceptor two-photon-absorbing molecules. Phys Chem Chem Phys 2018; 20:19398-19407. [DOI: 10.1039/c8cp02647e] [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
Excited-state decay rate constant is controlled by hydrogen bonding, which is switched from intramolecular to intermolecular by choice of solvent.
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Affiliation(s)
- David J. Stewart
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Ramamurthi Kannan
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Tod A. Grusenmeyer
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Jacob M. Artz
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Stephanie L. Long
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Zhenning Yu
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Thomas M. Cooper
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Joy E. Haley
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
| | - Loon-Seng Tan
- Air Force Research Laboratory
- Materials and Manufacturing Directorate
- Functional Materials Division
- Wright-Patterson AFB
- USA
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Manojai N, Daengngern R, Kerdpol K, Kungwan N, Ngaojampa C. TD-DFT Study of Absorption and Emission Spectra of 2-(2′-Aminophenyl)benzothiazole Derivatives in Water. J Fluoresc 2017; 27:745-754. [DOI: 10.1007/s10895-016-2007-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 12/20/2016] [Indexed: 02/02/2023]
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Tseng HW, Liu JQ, Chen YA, Chao CM, Liu KM, Chen CL, Lin TC, Hung CH, Chou YL, Lin TC, Wang TL, Chou PT. Harnessing Excited-State Intramolecular Proton-Transfer Reaction via a Series of Amino-Type Hydrogen-Bonding Molecules. J Phys Chem Lett 2015; 6:1477-86. [PMID: 26263155 DOI: 10.1021/acs.jpclett.5b00423] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A series of new amino (NH)-type hydrogen-bonding (H-bonding) compounds comprising 2-(2'-aminophenyl)benzothiazole and its extensive derivatives were designed and synthesized. Unlike in the hydroxyl (OH)-type H-bonding systems, one of the amino hydrogens can be replaced with electron-donating/withdrawing groups. This, together with a versatile capability for modifying the parent moiety, makes feasible the comprehensive spectroscopy and dynamics studies of amino-type excited-state intramolecular proton transfer (ESIPT), which was previously inaccessible in the hydroxyl-type ESIPT systems. Empirical correlations were observed among the hydrogen-bonding strength (the N-H bond distances and proton acidity), ESIPT kinetics, and thermodynamics, demonstrating a trend that the stronger N-H···N hydrogen bond leads to a faster ESIPT, as experimentally observed, and a more exergonic reaction thermodynamics. Accordingly, ESIPT reaction can be harnessed for the first time from a highly endergonic type (i.e., prohibition) toward equilibrium with a measurable ESIPT rate and then to the highly exergonic, ultrafast ESIPT reaction within the same series of amino-type intramolecular H-bond system.
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Affiliation(s)
- Huan-Wei Tseng
- †Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Jun-Qi Liu
- ‡School of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Yi-An Chen
- †Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Chi-Min Chao
- ‡School of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
- §Department of Medical Education, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
| | - Kuan-Miao Liu
- ‡School of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
- §Department of Medical Education, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
| | - Chi-Lin Chen
- †Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Tzu-Chieh Lin
- †Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Cheng-Hsien Hung
- ‡School of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Yen-Lin Chou
- ‡School of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Ta-Chun Lin
- ‡School of Medical Applied Chemistry, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Tian-Lin Wang
- †Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Pi-Tai Chou
- †Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan
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5
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Zeng L, Chen S, Xia T, Zhong C, Liu Z. Designing two-photon fluorescent probes based on the target-induced enhancement of the absorption cross-section. Chem Commun (Camb) 2014; 50:11139-42. [DOI: 10.1039/c4cc05010j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have reported a new strategy for two-photon probe design for the simultaneous target-induced enhancement of the two-photon absorption cross-section and quantum yield.
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Affiliation(s)
- Lingyu Zeng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072, China
| | - Shiyu Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072, China
| | - Tian Xia
- College of Life Science
- Wuhan University
- Wuhan 430072, China
| | - Cheng Zhong
- Hubei Key Laboratory of Organic and Polymeric Optoelectronic Materials
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072, China
| | - Zhihong Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education)
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan 430072, China
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Syetov Y. TDDFT calculations of electronic spectra of benzoxazoles undergoing excited state proton transfer. J Fluoresc 2013; 23:689-96. [PMID: 23475275 DOI: 10.1007/s10895-013-1196-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 02/24/2013] [Indexed: 11/26/2022]
Abstract
Energies and oscillator strengths of vertical transitions for various rotameric and tautomeric species of 2-(2'-hydroxyphenyl)benzoxazole (HBO), 2,5-bis(2-benzoxazolyl)phenol (DBP) and 2,5-bis(2-benzoxazolyl)hydroquinone (BBHQ) have been calculated in the ground and first excited states with the use of TDDFT methods. The TDDFT results demonstrate good correspondence to the frequencies of absorption and fluorescence bands of the benzoxazoles reported for measurements in supersonic jets and solution, but fail to predict relative energies of the enol and keto tautomers of DBP and BBHQ in the excited state. Low intensity of the fluorescence bands attributed to the conformations of HBO and DBP that do not undergo excited state proton transfer is shown to be caused by low concentrations of the conformations in the ground state. For the three compounds large-amplitude twisting of the keto tautomer is found to be one of radiationless processes resulting in decrease of the fluorescence with a large Stokes shift.
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Affiliation(s)
- Y Syetov
- Department of Solid State Physics and Optoelectronics, Oles Gonchar Dnipropetrovsk National University, Prosp. Gagarina, 72, 49010, Dnipropetrovsk, Ukraine.
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Nayak MK. Synthesis, characterization and optical properties of aryl and diaryl substituted phenanthroimidazoles. J Photochem Photobiol A Chem 2012. [DOI: 10.1016/j.jphotochem.2012.05.018] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Two-photon-induced intramolecular excited-state proton transfer process and nonlinear optical properties of HBI in ethanol solution. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2011.11.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Tsai HHG, Sun HLS, Tan CJ. TD-DFT study of the excited-state potential energy surfaces of 2-(2'-hydroxyphenyl)benzimidazole and its amino derivatives. J Phys Chem A 2010; 114:4065-79. [PMID: 20184331 DOI: 10.1021/jp100022y] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study, we used TD-PBE0 calculations to investigate the first singlet excited state (S(1)) behavior of 2-(2'-hydroxyphenyl)benzimidazole (HBI) and its amino derivatives. We employed the potential energy surfaces (PESs) at the S(1) state covering the normal syn, tautomeric (S(1)-T(syn)), and intramolecular charge-transfer (S(1)-T(ICT)) states in ethanol and cyclohexane to investigate the reaction mechanisms, including excited-state intramolecular proton transfer (ESIPT) and intramolecular charge-transfer (ICT) processes. Two new S(1)-T(ICT) states, stable in ethanol and cyclohexane, were found for HBI and its amino derivatives; they are twisted and pyramidalized. The flat PES of the ICT process makes the S(1)-T(ICT) states accessible. The S(1)-T(ICT) state is effective for radiationless relaxation, which is responsible for quenching the fluorescence of the S(1)-T(syn) state. In contrast to the situation encountered conventionally, the S(1)-T(ICT) state does not possess a critically larger dipole moment than its precursor, S(1)-T(syn) state; hence, it is not particularly stable in polar solvents. On the basis of the detailed PESs, we rationalize various experimental observations complementing previous studies and provide insight to understand the excited-state reaction mechanisms of HBI and its amino derivatives.
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Affiliation(s)
- Hui-Hsu Gavin Tsai
- Department of Chemistry, National Central University, Jhong-Li City, Tao-Yuan County 32001, Taiwan.
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Morales AR, Schafer-Hales KJ, Yanez CO, Bondar MV, Przhonska OV, Marcus AI, Belfield KD. Excited state intramolecular proton transfer and photophysics of a new fluorenyl two-photon fluorescent probe. Chemphyschem 2009; 10:2073-81. [PMID: 19449363 PMCID: PMC2763332 DOI: 10.1002/cphc.200900032] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2009] [Indexed: 11/05/2022]
Abstract
The steady-state photophysical, NMR, and two-photon absorption (2PA) properties of a new fluorene derivative (1) containing the 2-(2'-hydroxyphenyl)benzothiazole (HBT) terminal construct is investigated for use as a fluorescence probe in bioimaging. A comprehensive analysis of the linear spectral properties reveals inter- and intramolecular hydrogen bonding and excited state intramolecular proton transfer (ESIPT) processes in the HBT substituent. A specific electronic model with a double minimum potential energy surface is consistent with the observed spectral properties. The 2PA spectra are obtained using a standard two-photon induced fluorescence method with a femtosecond kHz laser system, affording a maximum 2PA cross section of approximately 600 GM, a sufficiently high value for two-photon fluorescence imaging. No dependence of two-photon absorption efficiency on solvent properties and hydrogen bonding in the HBT substituent is observed. The potential use of this fluorenyl probe in bioimaging is demonstrated via one- and two-photon fluorescence imaging of COS-7 cells.
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Affiliation(s)
- Alma R. Morales
- Department of Chemistry, University of Central Florida, P.O. Box 162366, Orlando, FL 32816-2366 (USA)
| | | | - Ciceron O. Yanez
- Department of Chemistry, University of Central Florida, P.O. Box 162366, Orlando, FL 32816-2366 (USA)
| | | | | | - Adam I. Marcus
- Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA 30322 (USA)
| | - Kevin D. Belfield
- Department of Chemistry, University of Central Florida, P.O. Box 162366, Orlando, FL 32816-2366 (USA)
- CREOL, The College of Optics and Photonics, University of Central Florida, P.O. Box 162366, Orlando, FL 32816-2366 (USA)
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