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Dutta S, Basu N, Mandal D. ESIPT in a Binary Mixture of Non-Polar and Protic Polar Solvents : Role of Solvation Dynamics. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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2
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Suda K, Sarinastiti A, Arifin, Kimura Y, Yokogawa D. Understanding Structural Changes through Excited-State Intramolecular Proton Transfer in 4′-N,N-Diethylamino-3-hydroxyflavone (DEAHF) in Solution Based on Quantum Chemical Calculations. J Phys Chem B 2019; 123:9872-9881. [DOI: 10.1021/acs.jpcb.9b07549] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Kayo Suda
- Graduate School of Arts and Science, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
| | - Asri Sarinastiti
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan
| | - Arifin
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan
| | - Yoshifumi Kimura
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Kyotanabe, Kyoto 610-0321, Japan
| | - Daisuke Yokogawa
- Graduate School of Arts and Science, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan
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3
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Kuang Z, Guo Q, Wang X, Song H, Maroncelli M, Xia A. Ultrafast Ground-State Intramolecular Proton Transfer in Diethylaminohydroxyflavone Resolved with Pump-Dump-Probe Spectroscopy. J Phys Chem Lett 2018; 9:4174-4181. [PMID: 29991264 DOI: 10.1021/acs.jpclett.8b01826] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
4'- N, N-Diethylamino-3-hydroxyflavone (DEAHF), due to excited-state intramolecular proton transfer (ESIPT) reaction, exhibits two solvent-dependent emission bands. Because of the slow formation and fast decay of the ground-state tautomer, its population does not accumulate enough for its detection during the normal photocycle. As a result, the details of the ground-state intramolecular proton-transfer (GSIPT) reaction have remained unknown. The present work uses femtosecond pump-dump-probe spectroscopy to prepare the short-lived ground-state tautomer and track this GSIPT process in solution. By simultaneously measuring femtosecond pump-probe and pump-dump-probe spectra, ultrafast kinetics of the ESIPT and GSIPT reactions are obtained. The GSIPT reaction is shown to be a solvent-dependent irreversible two-state process in two solvents, with estimated time constants of 1.7 ps in toluene and 10 ps in the more polar tetrahydrofuran. These results are of great value in both fully describing the photocycle of this four-level proton transfer molecule and for providing a deeper understanding of dynamical solvent effects on tautomerization.
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Affiliation(s)
- Zhuoran Kuang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Qianjin Guo
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , People's Republic of China
| | - Xian Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Hongwei Song
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
| | - Mark Maroncelli
- Department of Chemistry , The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
| | - Andong Xia
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Photochemistry, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100190 , People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049 , People's Republic of China
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4
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Rumble CA, Breffke J, Maroncelli M. Solvation Dynamics and Proton Transfer in Diethylaminohydroxyflavone. J Phys Chem B 2017; 121:630-637. [PMID: 28001070 DOI: 10.1021/acs.jpcb.6b12146] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
4'-N,N-Diethylamino-3-hydroxyflavone (DEAHF) exhibits dual fluorescence in most solvents as a result of a rapid excited-state intramolecular proton transfer reaction. The high sensitivity of its dual emission to solvent polarity and hydrogen bonding make DEAHF of interest as a ratiometric fluorescence sensor. In addition, prior work has suggested that the rate of this proton transfer should depend on solvent relaxation in an unusual manner. It has been proposed that rapid solvation of the initially excited reactant should retard reaction. The present work tests this idea by using femtosecond Kerr-gated emission spectroscopy to measure the reaction kinetics of DEAHF in mixtures of propylene carbonate (PC) + acetonitrile (ACN). This mixture was chosen to maintain constant solvent polarity and thereby constant reaction energies while varying solvation times ∼10-fold with composition. The reaction kinetics observed in these mixtures are multiexponential, consisting of resolvable components of ∼2 and ∼30 ps and a small fraction of reaction faster than detectable by the 400 fs resolution of the experiment. Average reaction times increase by approximately a factor of 2 as a function of ACN mole fraction, primarily as a result of changes to the slower kinetic component. This trend is opposite to the composition dependence of solvation times, thereby supporting the unusual role of polar solvation dynamics in this proton transfer. In n-alkane solvents, where electrostatic coupling is minimized, frictional properties of the solvent do not influence reaction rates.
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Affiliation(s)
- Christopher A Rumble
- Department of Chemistry, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Jens Breffke
- Department of Chemistry, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Mark Maroncelli
- Department of Chemistry, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
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5
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Chemate S, Sekar N. Indole-Based NLOphoric Donor-π-Acceptor Styryl Dyes: Synthesis, Spectral Properties and Computational Studies. J Fluoresc 2016; 26:2063-2077. [PMID: 27530631 DOI: 10.1007/s10895-016-1901-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 08/04/2016] [Indexed: 10/21/2022]
Abstract
Donor-π- acceptor styryl chromophores based on indole core were synthesized by Knoevenagel condensation of N-ethyl indole-3-carbaldehyde and different active methylene compounds. The absorption and emission properties of these dyes in different solvents were studied. The dyes displayed a broad absorption maximum in the UV and visible region between 397 and 469 nm with FWHM, 50 to 75 nm. Due to the extended π - conjugated systems this styryl chromophores shows strong intramolecular charge transfer characteristics. The dyes showed solid state emission and emission in solid state was red shifted as compared to their emission in less polar solvents. Density Functional Theory [B3LYP/6-311 + G(d)] computations were used to correlate the structural, molecular, electronic and photo physical parameters of styryl dye with experimental study. Synthesized dyes were confirmed by using FT-IR, 1H NMR, 13C NMR and HRMS spectral analysis.
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Affiliation(s)
- Santosh Chemate
- Department of Dyestuff Technology, Institute of Chemical Technology, Mumbai, 400 019, India
| | - Nagaiyan Sekar
- Department of Dyestuff Technology, Institute of Chemical Technology, Mumbai, 400 019, India.
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Lee H, Han H, Jeong J, Kim H, Song DI, Kim Y. Broadband-Solubility Diketopyrrolopyrrole Derivative with Both Polar Cyano and Nonpolar Alkyl Groups for Stable Organic Photosensors and Diffusion-Processed Organic Solar Cells. ChemistrySelect 2016. [DOI: 10.1002/slct.201600291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hyena Lee
- Organic Nanoelectronics Laboratory, Department of Chemical Engineering, School of; Applied Chemical Engineering; Kyungpook National University; Daegu 41566 Republic of Korea
| | - Hyemi Han
- Organic Nanoelectronics Laboratory, Department of Chemical Engineering, School of; Applied Chemical Engineering; Kyungpook National University; Daegu 41566 Republic of Korea
| | - Jaehoon Jeong
- Organic Nanoelectronics Laboratory, Department of Chemical Engineering, School of; Applied Chemical Engineering; Kyungpook National University; Daegu 41566 Republic of Korea
| | - Hwajeong Kim
- Organic Nanoelectronics Laboratory, Department of Chemical Engineering, School of; Applied Chemical Engineering; Kyungpook National University; Daegu 41566 Republic of Korea
- Research Institute of Advanced Energy Technology; Kyungpook National University; Daegu 41566 Republic of Korea
| | - Dong-Ik Song
- Department of Chemical Engineering; Kyungpook National University; Daegu 41566 Republic of Korea
| | - Youngkyoo Kim
- Organic Nanoelectronics Laboratory, Department of Chemical Engineering, School of; Applied Chemical Engineering; Kyungpook National University; Daegu 41566 Republic of Korea
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Ghosh D, Ahamed G, Batuta S, Begum NA, Mandal D. Effect of an Electron-Donating Substituent at the 3′,4′-position of 3-Hydroxyflavone: Photophysics in Bulk Solvents. J Phys Chem A 2016; 120:44-54. [DOI: 10.1021/acs.jpca.5b09681] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Deborin Ghosh
- Department
of Chemistry, University College of Science and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India
| | - Giasuddin Ahamed
- Department
of Chemistry, University College of Science and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India
| | - Shaikh Batuta
- Bio-Organic
Chemistry Lab, Department of Chemistry, Visva-Bharati University, Santiniketan 731 235, India
| | - Naznin Ara Begum
- Bio-Organic
Chemistry Lab, Department of Chemistry, Visva-Bharati University, Santiniketan 731 235, India
| | - Debabrata Mandal
- Department
of Chemistry, University College of Science and Technology, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India
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Ghosh D, Batuta S, Begum NA, Mandal D. Unusually slow intramolecular proton transfer dynamics of 4′-N,N-dimethylamino-3-hydroxyflavone in high n-alcohols: involvement of solvent relaxation. Photochem Photobiol Sci 2016; 15:266-77. [DOI: 10.1039/c5pp00377f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The S1 energy surface of DMA3HF as a function of solvation and ESIPT coordinates, viewed down the energy axis as a 2-dimensional projection.
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Affiliation(s)
- Deborin Ghosh
- Department of Chemistry
- University College of Science & Technology
- University of Calcutta
- Kolkata 700 009
- India
| | - Shaikh Batuta
- Bio-Organic Chemistry Lab
- Department of Chemistry
- Visva-Bharati University
- Santiniketan 731 235
- India
| | - Naznin Ara Begum
- Bio-Organic Chemistry Lab
- Department of Chemistry
- Visva-Bharati University
- Santiniketan 731 235
- India
| | - Debabrata Mandal
- Department of Chemistry
- University College of Science & Technology
- University of Calcutta
- Kolkata 700 009
- India
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9
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Furukawa K, Hino K, Yamamoto N, Awasthi K, Nakabayashi T, Ohta N, Sekiya H. External Electric Field Effects on Excited-State Intramolecular Proton Transfer in 4′-N,N-Dimethylamino-3-hydroxyflavone in Poly(methyl methacrylate) Films. J Phys Chem A 2015; 119:9599-608. [DOI: 10.1021/acs.jpca.5b03672] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazuki Furukawa
- Department
of Chemistry, Faculty of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kazuyuki Hino
- Department
of Chemistry, Faculty of Education, Aichi University of Education, 1 Hirosawa, Igaya, Kariya, Aichi 448-8542, Japan
| | - Norifumi Yamamoto
- Department
of Life and Environmental Sciences, Faculty of Engineering, Chiba Institute of Technology, Tsudanuma 2-17-1, Narashino, Chiba 275-0016, Japan
| | - Kamlesh Awasthi
- Department
of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University 1001, Ta-Hsueh Road, Hsinchu 30010, Taiwan
| | - Takakazu Nakabayashi
- Graduate
School of Pharmaceutical Sciences, Tohoku University, Aoba-Ku, Sendai 980-8578, Japan
| | - Nobuhiro Ohta
- Department
of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University 1001, Ta-Hsueh Road, Hsinchu 30010, Taiwan
| | - Hiroshi Sekiya
- Department
of Chemistry, Faculty of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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Padalkar VS, Lanke SK, Chemate SB, Sekar N. N-2-Aryl-1,2,3-Triazoles: A Novel Class of Blue Emitting Fluorophores-Synthesis, Photophysical Properties Study and DFT Computations. J Fluoresc 2015; 25:985-96. [PMID: 25976087 DOI: 10.1007/s10895-015-1580-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 05/04/2015] [Indexed: 01/17/2023]
Abstract
Novel fluorescent 2-[4-(4,5-diphenyl-1H-imidazol-2-yl) phenyl]-2H-naphtho [1,2-d] [1,2,3] triazolyl derivatives were synthesized from 4-(4,5-diphenyl-1H-imidazol-2-yl) aniline and substituted naphthalen-2-amine. The photophysical properties of the three new fluorophores were evaluated in acetonitrile, methanol, dimethylsulfoxide and N,N-dimethylformamide solvents and were compared with the reported analogs. The compounds show the absorption in the ultraviolet region and the emission in the blue region. The thermal stabilities of these compounds was evaluated by thermogravimetric analysis. The solvatochromism data are used for ground and excited state dipole moment determination of the synthesized triazoles using Bakhshiev and Bilot-Kawski correlations. The experimental absorption and emission were compared with the theoretical data obtained by DFT and TD-DFT computations and they are well in agreement with each other.
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Affiliation(s)
- Vikas S Padalkar
- Tinctorial Chemistry Group, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai, 400 019, Maharashtra, India
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11
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Ghosh D, Batuta S, Das S, Begum NA, Mandal D. Proton Transfer Dynamics of 4'-N,N-Dimethylamino-3-hydroxyflavone Observed in Hydrogen-Bonding Solvents and Aqueous Micelles. J Phys Chem B 2015; 119:5650-61. [PMID: 25830692 DOI: 10.1021/acs.jpcb.5b00021] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photophysical studies on the 4'-N,N-dimethylamino-3-hydroxyflavone fluorophore were performed in hydrogen-bonding solvents. Both in hydrogen-bonding acids and bases, clear evidence of excited state intramolecular proton transfer (ESIPT) emerged from steady-state and time-resolved spectroscopies. The same was also observed for the fluorophores residing in the hydrophilic shell region of aqueous micelles, where they come into close contact with water molecules at the micelle-water interface. Slow ∼100 ps ESIPT time-constants were determined in these systems that correlated well with solvation dynamics. The slow ESIPT time-constants are attributed to activated barrier crossing from the solvent-relaxed enol form to tautomer form in the excited state energy surface of the flavone. In contrast to the barrier-less ESIPT occurring in early (<1 ps) time-scales, this activated proton-transfer event necessarily requires extensive reorganization of flavone···solvent intermolecular hydrogen bonds, a process heavily modulated by the relatively slower dynamics of solvent relaxation around the excited fluorophore.
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Affiliation(s)
| | - Shaikh Batuta
- ‡Bio-Organic Chemistry Lab, Department of Chemistry, Visva-Bharati University, Santiniketan 731 235, India
| | - Sreeparna Das
- ‡Bio-Organic Chemistry Lab, Department of Chemistry, Visva-Bharati University, Santiniketan 731 235, India
| | - Naznin Ara Begum
- ‡Bio-Organic Chemistry Lab, Department of Chemistry, Visva-Bharati University, Santiniketan 731 235, India
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12
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Synthesis of Novel Carbazole Fused Coumarin Derivatives and DFT Approach to Study Their Photophysical Properties. J Fluoresc 2014; 24:1503-18. [DOI: 10.1007/s10895-014-1436-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 08/11/2014] [Indexed: 01/22/2023]
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13
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Moroz VV, Chalyi AG, Serdiuk IE, Roshal AD, Zadykowicz B, Pivovarenko VG, Wróblewska A, Błażejowski J. Tautomerism and Behavior of 3-Hydroxy-2-phenyl-4H-chromen-4-ones (Flavonols) and 3,7-Dihydroxy-2,8-diphenyl-4H,6H-pyrano[3,2-g]chromene-4,6-diones (Diflavonols) in Basic Media: Spectroscopic and Computational Investigations. J Phys Chem A 2013; 117:9156-67. [DOI: 10.1021/jp403487w] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Valery V Moroz
- Institute of Chemistry, Kharkiv V.N. Karazin National University , Svoboda 4, 61077 Kharkiv, Ukraine
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TDDFT Investigation of the Electronic Structures and Photophysical Properties of Fluorescent Extended Styryl Push-Pull Chromophores Containing Carbazole Unit. J Fluoresc 2013; 23:1121-38. [DOI: 10.1007/s10895-013-1241-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 05/22/2013] [Indexed: 10/26/2022]
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Gahlaut R, Tewari N, Bridhkoti J, Joshi N, Joshi H, Pant S. Determination of ground and excited state dipole moments of some naphthols using solvatochromic shift method. J Mol Liq 2011. [DOI: 10.1016/j.molliq.2011.08.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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On the ground and excited state dipole moments of dansylamide from solvatochromic shifts of absorption and fluorescence spectra. J Mol Liq 2011. [DOI: 10.1016/j.molliq.2011.03.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Rautela R, Joshi N, Joshi H, Tewari N, Pant S. Solvatochromic study of 2-hydroxy-4-methylquinoline for the determination of dipole moments and solute–solvent interactions. J Mol Liq 2010. [DOI: 10.1016/j.molliq.2010.04.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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