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Shekhovtsov NA, Vorob'eva S, Nikolaenkova EB, Ryadun AA, Krivopalov VP, Gourlaouen C, Bushuev MB. Complexes on the Base of a Proton Transfer Capable Pyrimidine Derivative: How Protonation and Deprotonation Switch Emission Mechanisms. Inorg Chem 2023; 62:16734-16751. [PMID: 37781777 DOI: 10.1021/acs.inorgchem.3c02036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
A rare example of pyrimidine-based ESIPT-capable compounds, 2-(2-hydroxyphenyl)-4-(1H-pyrazol-1-yl)-6-methylpyrimidine (HLH), was synthesized (ESIPT─excited state intramolecular proton transfer). Its reactions with zinc(II) salts under basic or acidic conditions afforded a dinuclear [Zn2LH2Cl2] complex and an ionic (H2LH)4[ZnCl4]2·3H2O solid. Another ionic solid, (H2LH)Br, was obtained from the solution of HLH acidified with HBr. In both ionic solids, the H+ ion protonates the same pyrimidinic N atom that accepts the O-H···N intramolecular hydrogen bond in the structure of free HLH, which breaks this hydrogen bond and switches off ESIPT in these compounds. This series of compounds which includes neutral HLH molecules and ionic (LH)- and (H2LH)+ species allowed us to elucidate the impact of protonation and coordination coupled deprotonation of HLH on the photoluminescence response and on altering the emission mechanism. The neutral HLH compound exhibits yellow emission as a result of the coexistence of two radiative decay channels: (i) T1 → S0 phosphorescence of the enol form and (ii) anti-Kasha S2 → S0 fluorescence of the keto form, which if feasible due to the large S2-S1 energy gap. However, owing to the efficient nonradiative decay through an energetically favorable conical intersection, the photoluminescence quantum yield of HLH is low. Protonation or deprotonation of the HLH ligand results in the significant blue-shift of the emission bands by more than 100 nm and boosts the quantum efficiency up to ca. 20% in the case of [Zn2LH2Cl2] and (H2LH)4[ZnCl4]2·3H2O. Despite both (H2LH)4[ZnCl4]2·3H2O and (H2LH)Br have the same (H2LH)+ cation in the structures, their emission properties differ significantly, whereas (H2LH)Br shows dual emission associated with two radiative decay channels: (i) S1 → S0 fluorescence and (ii) T1 → S0 phosphorescence, (H2LH)4[ZnCl4]2·3H2O exhibits only fluorescence. This difference in the emission properties can be associated with the external heavy atom effect in (H2LH)Br, which leads to faster intersystem crossing in this compound. Finally, a huge increase in the intensity of the phosphorescence of (H2LH)Br on cooling leads to pronounced luminescence thermochromism (violet emission at 300 K, sky-blue emission at 77 K).
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Affiliation(s)
- Nikita A Shekhovtsov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Sofia Vorob'eva
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Elena B Nikolaenkova
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 9, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Alexey A Ryadun
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Viktor P Krivopalov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of Russian Academy of Sciences, 9, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
| | - Christophe Gourlaouen
- Laboratoire de Chimie Quantique, Institut de Chimie, UMR 7177 CNRS-Université de Strasbourg, 4 rue Blaise Pascal, Strasbourg Cedex 67070, France
| | - Mark B Bushuev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
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2
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Yang L, Zhang D, Wang M, Yang Y. Effects of solvent polarity on the novel excited-state intramolecular thiol proton transfer and photophysical property compared with the oxygen proton transfer. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 293:122475. [PMID: 36780743 DOI: 10.1016/j.saa.2023.122475] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/04/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Recently, the dual-fluorescent phenomena of excited state intramolecular thiol proton transfer (ESIPT) for 3-thiolflavone derivative (3NTF) were reported by Chou and coworkers for the first time [J. Am. Chem. Soc. 143 (2021) 12715-12724], which opened a new chapter in the field of ESIPT. Based on density functional theory (DFT) and time-dependent density functional theory (TDDFT), the proton transfer processes of 3NTF in toluene, dichloromethane and acetonitrile were studied. By optimizing the structure of the ground (S0) state and first excited (S1) state of 3NTF in different solvents, the hydrogen-bond parameters and proton-transfer potential energy curves were calculated. It was shown that although photo-excitation enhanced the intramolecular hydrogen bonding strength and thus promoted the occurrence of ESIPT, the solvent polarities inhibited the enhancement of the hydrogen bond of S1 state, which was not conducive to ESIPT. The electron spectra analyses were consistent with experimental data, which confirmed the rationality of molecular configurations. The time-evolved excited state dynamics simulation was performed based on the optimized structure of 3NTF, indicating that the ESIPT was an ultrafast photochemical reaction less than 180 fs. Moreover, we compared the potential energy surfaces of ESIPT, electronic structures based on natural transition orbitals (NTOs) method and electron-hole isosurfaces for the 3NTF and the traditional flavone molecule (3NHF), concluded that the unusually large Stokes shift fluorescence of 3NTF was mainly caused by the coupling of ESIPT and twisting intramolecular charge transfer (TICT), and the 3NTF isomer had the more nπ* character in the electron transition process. The nπ* ICT significantly increased with the decrease of solvent polarities, affecting the molecular photophysical properties, this made it more widely used in biomedical, photochemical, materials science and other fields.
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Affiliation(s)
- Lujia Yang
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, PR China
| | - Dan Zhang
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, PR China
| | - Mingli Wang
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, PR China.
| | - Yunfan Yang
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, PR China.
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Liang R, Li Y, Yan Z, Bai X, Lai W, Du L, Phillips DL. Exploring Solvent Effects on the Proton Transfer Processes of Selected Benzoxazole Derivatives by Femtosecond Time-Resolved Fluorescence and Transient Absorption Spectroscopies. ACS PHYSICAL CHEMISTRY AU 2022; 3:181-189. [PMID: 36968447 PMCID: PMC10037457 DOI: 10.1021/acsphyschemau.2c00036] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 12/14/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
Excited-state intramolecular proton transfer (ESIPT) is of great importance due to the large Stokes shift emission that can be observed in some ESIPT molecules. Although steady-state spectroscopies have been employed to study the properties of some ESIPT molecules, their excited-state dynamics have not been examined directly with time-resolved spectroscopy methods yet for a number of systems. Here, an in-depth investigation of the solvent effects on the excited-state dynamics of two prototypical ESIPT molecules, 2-(2'-hydroxyphenyl)-benzoxazole (HBO) and 2-(2'-hydroxynaphthalenyl)-benzoxazole (NAP), have been accomplished by using femtosecond time-resolved fluorescence and transient absorption spectroscopies. Solvent effects affect the excited-state dynamics of HBO more significantly than that of NAP. Particularly in the presence of water, the photodynamics pathways of HBO are changed, while only small changes can be found in NAP. An ultrafast ESIPT process that occurs within our instrumental response is observed for HBO, and this is followed by an isomerization process in ACN solution. However, in aqueous solution, the obtained syn-keto* after ESIPT can be solvated by water in about 3.0 ps, and the isomerization process is totally inhibited for HBO. The mechanism of NAP is different from HBO and is determined to be a two-step excited-state proton transfer process. Upon photoexcitation, NAP is deprotonated first in the excited state to generate the anion*, which can transfer to the syn-keto* form followed by an isomerization process.
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Affiliation(s)
- Runhui Liang
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, P.R. China
- Department of Chemistry, The University of Hong Kong, Hong Kong 999077, P.R. China
| | - Yuanchun Li
- Department of Chemistry, The University of Hong Kong, Hong Kong 999077, P.R. China
| | - Zhiping Yan
- Institute of Advanced Materials (IAM), Nanjing Tech University (Nanjing Tech), Nanjing 211816, P.R. China
| | - Xueqin Bai
- Department of Chemistry, The University of Hong Kong, Hong Kong 999077, P.R. China
| | - Wenquan Lai
- Department of Chemistry, The University of Hong Kong, Hong Kong 999077, P.R. China
| | - Lili Du
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, P.R. China
- Department of Chemistry, The University of Hong Kong, Hong Kong 999077, P.R. China
| | - David Lee Phillips
- Department of Chemistry, The University of Hong Kong, Hong Kong 999077, P.R. China
- Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, Hong Kong 999077, P.R. China
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Zhan H, Wang Y, Tang Z, Fei X, Tian J. Exploring the influence of intermolecular hydrogen bonding on the fluorescence properties of HQCT and HQPH fluorescent chemosensors. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121537. [PMID: 35777227 DOI: 10.1016/j.saa.2022.121537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 06/03/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
Recently, two trace water detection probes, 8-hydroxyquinoline-2-carboxaldehyde thiosemicarbazone(HQCT) and 8-hydroxyquinoline-2-carboxaldehyde (pyridine-2-carbonyl)-hydrazine(HQPH) have been successfully designed in the experiment. The original intramolecular proton transfer can be prevented by the water molecules, leading to fluorescence quenching. In order to investigate the fluorescence quenching mechanism, the effect of water molecules on the excited state proton transfer process will be studied in detail. In this contribution, the six models have been optimized and the related analysis have been carried out. When water molecules are involved in the proton transfer process, the energy barrier decreases significantly and the conversion of the enol structure to the keto structure is accelerated. Moreover, the intermolecular hydrogen bonding, not participating in the proton transfer process, can facilitate the proton transfer process by affecting the distribution of the electrostatic potential within the molecule, which in turn lowers the energy barrier for proton transfer.
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Affiliation(s)
- Hongbin Zhan
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Yi Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, PR China.
| | - Zhe Tang
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, PR China
| | - Xu Fei
- Lab Analyst of Network Information Center, Dalian Polytechnic University, Dalian 116034, PR China
| | - Jing Tian
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, PR China
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Shekhovtsov NA, Nikolaenkova EB, Berezin AS, Plyusnin VF, Vinogradova KA, Naumov DY, Pervukhina NV, Tikhonov AY, Bushuev MB. Tuning ESIPT-coupled luminescence by expanding π-conjugation of a proton acceptor moiety in ESIPT-capable zinc(II) complexes with 1-hydroxy-1 H-imidazole-based ligands. Dalton Trans 2022; 51:15166-15188. [PMID: 36129344 DOI: 10.1039/d2dt02460h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The emission of ESIPT-fluorophores is known to be sensitive to various external and internal stimuli and can be fine-tuned through substitution in the proton-donating and proton-accepting groups. The incorporation of metal ions in the molecules of ESIPT fluorophores without their deprotonation is an emerging area of research in coordination chemistry which provides chemists with a new factor affecting the ESIPT reaction and ESIPT-coupled luminescence. In this paper we present 1-hydroxy-5-methyl-4-(pyridin-2-yl)-2-(quinolin-2-yl)-1H-imidazole (HLq) as a new ESIPT-capable ligand. Due to the spatial separation of metal binding and ESIPT sites this ligand can coordinate metal ions without being deprotonated. The reactions of ZnHal2 with HLq afford ESIPT-capable [Zn(HLq)Hal2] (Hal = Cl, Br, I) complexes. In the solid state HLq and [Zn(HLq)Hal2] luminesce in the orange region (λmax = 600-650 nm). The coordination of HLq by Zn2+ ions leads to the increase in the photoluminescence quantum yield due to the chelation-enhanced fluorescence effect. The ESIPT process is barrierless in the S1 state, leading to the only possible fluorescence channel in the tautomeric form (T), S1T → S0T. The emission of [Zn(HLq)Hal2] in the solid state is blue-shifted as compared with HLq due to the stabilization of the ground state and destabilization of the excited state. In CH2Cl2 solutions, the compounds demonstrate dual emission in the UV (λmax = 358 nm) and green (λmax = 530 nm) regions. This dual emission is associated with two radiative deactivation channels in the normal (N) and tautomeric (T) forms, S1N → S0N and S1T → S0T, originating from two minima on the excited state potential energy surfaces. High energy barriers for the GSIPT process allow the trapping of molecules in the minimum of the tautomeric form, S0T, resulting in the possibility of the S0T → S1T photoexcitation and extraordinarily small Stokes shifts in the solid state. Finally, the π-system of quinolin-2-yl group facilitates the delocalization of the positive charge in the proton-accepting part of the molecule and promotes the ESIPT reaction.
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Affiliation(s)
- Nikita A Shekhovtsov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia.
| | - Elena B Nikolaenkova
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia
| | - Alexey S Berezin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia.
| | - Victor F Plyusnin
- Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, 3, Institutskaya str., Novosibirsk, 630090, Russia
| | - Katerina A Vinogradova
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia.
| | - Dmitry Yu Naumov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia.
| | - Natalia V Pervukhina
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia.
| | - Alexsei Ya Tikhonov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia
| | - Mark B Bushuev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia.
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6
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Investigating the mechanism of fluorescence probe of quinoline derivatives for detecting phosgene in gas and liquid phases. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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7
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Tao M, Li Y, Huang Q, Zhao H, Lan J, Wan Y, Kuang Z, Xia A. Correlation between Excited-State Intramolecular Proton Transfer and Electron Population on Proton Donor/Acceptor in 2-(2'-Hydroxyphenyl)oxazole Derivatives. J Phys Chem Lett 2022; 13:4486-4494. [PMID: 35574839 DOI: 10.1021/acs.jpclett.2c01025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Modulating the excited-state intramolecular proton transfer (ESIPT) reaction to achieve anticipant performance is always fascinating for chemists. However, feasible methods and a definite mechanism for tuning the ESIPT reaction remain insufficient. In this work, we reported the feasibility of continuously modulating the ESIPT dynamics in 2-(2'-hydroxyphenyl)oxazole (HPO) derivatives with different substitutions on the positions 5 and 5' of the core HPO through steady-state/transient spectroscopy and theoretical calculations. We found that the main factor affecting the tendency of the ESIPT reaction is the variation of electron population on proton donor and acceptor. An index Δpdif was proposed to evaluate the overall promotion effect on proton transfer caused by the variation of electron population on proton donor and acceptor, which shows high reliability in interpreting the ESIPT tendency. This method, for its capacity to quickly estimate the tendency of ESIPT, shows great potential in ESIPT molecular design with chemical substitution of electron-donating/withdrawing moieties.
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Affiliation(s)
- Min Tao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yang Li
- School of Science, Beijing University of Posts and Telecommunications, Beijing, 100176, P. R. China
| | - Quan Huang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
- College of Chemistry and Chemical Engineering, Yibin University, Yibin, 644000, P. R. China
| | - Hongmei Zhao
- School of Science, Beijing University of Posts and Telecommunications, Beijing, 100176, P. R. China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Yan Wan
- College of Chemistry, Beijing Normal University, Beijing, 100875, P. R. China
| | - Zhuoran Kuang
- School of Science, Beijing University of Posts and Telecommunications, Beijing, 100176, P. R. China
| | - Andong Xia
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- School of Science, Beijing University of Posts and Telecommunications, Beijing, 100176, P. R. China
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8
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Unraveling excited state dynamics and photophysical properties for a series of phenol-quinoline derivatives by controlling hydrogen bond geometry. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113799] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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9
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Bera A, Nag P, Pandey D, Vennapusa SR. Theoretical approach to modeling the early nonadiabatic events of ESIPT originating from three-state conical intersection in quinophthalone. Photochem Photobiol Sci 2022; 21:1287-1298. [PMID: 35403961 DOI: 10.1007/s43630-022-00220-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 03/25/2022] [Indexed: 11/30/2022]
Abstract
We explore the excited-state intramolecular proton transfer process of quinophthalone theoretically. This molecule possesses three low-lying singlet excited states ([Formula: see text] and [Formula: see text]) in a narrow energy gap of less than the N-H stretching frequency. Dynamics simulations show nonadiabatic wavepacket transfer to [Formula: see text] and [Formula: see text] upon initiating the wavepacket on [Formula: see text]. Multiple accessible conical intersections that lie in the Franck-Condon region facilitate the nonadiabatic wavepacket transfer. Nuclear densities associated with the proton transfer promoting vibrations would start accumulating on [Formula: see text] and [Formula: see text] within a few tens of femtoseconds, validating the involvement of these vibrations in the nonadiabatic events that occur before the proton transfer process. Our findings emphasize the necessity of refined kinetic models for assigning the time constants of ultrafast transient spectroscopy measurements due to the simultaneous evolution of nonadiabatic events and proton transfer kinetics in quinophthalone.
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Affiliation(s)
- Anshuman Bera
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala PO, Vithura, Thiruvananthapuram, 695551, India
| | - Probal Nag
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala PO, Vithura, Thiruvananthapuram, 695551, India
| | - Diksha Pandey
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala PO, Vithura, Thiruvananthapuram, 695551, India
| | - Sivaranjana Reddy Vennapusa
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Maruthamala PO, Vithura, Thiruvananthapuram, 695551, India.
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Liu Q, Tang Z, Liu S, Zhao J, Zheng D. Exploring the ESIPT process and fluorescence properties of 2‑(2′-Hydroxyaryl)benzazole derivatives by expanding the π-conjugation framework. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Zhan H, Zhang H, Wang Y, Tao Y, Tian J, Fei X. Exploring the relationship between the "ON-OFF" mechanism of fluorescent probes and intramolecular charge transfer properties. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 265:120339. [PMID: 34537632 DOI: 10.1016/j.saa.2021.120339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/23/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
In this study, the excited state charge distribution characteristics and fluorescence mechanism of HClO detection probes HN-ClO (weak fluorescence) and HN-ClO-F (strong fluorescence) probes were investigated based on density functional theory (DFT) and time-dependent density functional theory (TDDFT). The results of electrostatic potential (ESP) map and hole-electron analysis show that the HN-ClO and HN-ClO-F probes have obvious charge separation characteristics in the excited state. The excited state energy decomposition and Merz-Kollman charge analysis demonstrate the existence of distinct planar intramolecular charge transfer (PICT) features in HN-ClO and HN-ClO-F. Due to the strong charge coupling caused by the planar structure, the fluorescence of HN-ClO-F could occur. Furthermore, the weak fluorescence of HN-ClO is caused by inter-system crossing (ISC) between S1 and T1 state. Our result proves that the ICT process could exist in HN-ClO-F, but the PICT process does not cause fluorescence quenching, which have provided an excellent supplement to the mechanism of fluorescent probes. The conclusion is consistent with the fluorescence phenomenon observed in the experiment.
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Affiliation(s)
- Hongbin Zhan
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Hengwei Zhang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Yi Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, PR China.
| | - Yaping Tao
- College of Physics and Electronic Information, Luoyang Normal University, Luoyang 471022, PR China
| | - Jing Tian
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Xu Fei
- Lab Analyst of Network Information Center, Dalian Polytechnic University, Dalian, 116034, PR China
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12
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Tang Z, Han H, Ding J, Zhou P. Dual fluorescence of 2-(2'-hydroxyphenyl) benzoxazole derivatives via the branched decays from the upper excited-state. Phys Chem Chem Phys 2021; 23:27304-27311. [PMID: 34850786 DOI: 10.1039/d1cp03546k] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As a special fluorescence phenomenon, double fluorescence has been widely developed and applied in various fields. Nevertheless, most of the research on fluorescence emission channels focuses on the first excited state, while the research on how to control the fluorescence emission channel through the upper excited state is relatively under-explored. Here, we use the time-dependent density functional theory method and consider the 2-(2'-hydroxyphenyl) benzoxazole (HBO) derivative system as an example to study the effect of upper excited states on double fluorescence. According to the calculation results, a new mechanism for the dual fluorescence was proposed, which involved the different decay pathways from the upper excited-state, the internal conversion through vibrational relaxation, and conical intersection, respectively. This research has potential value and can help in determining how to control the fluorescence emission channel through the upper excited state.
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Affiliation(s)
- Zhe Tang
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, P. R. China.
| | - Haiyun Han
- Heze Dingtao People's Hospital, Heze 274199, Shandong, P. R. China
| | - Junxia Ding
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, P. R. China
| | - Panwang Zhou
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, P. R. China.
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13
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Li Y, Bai X, Liang R, Zhang X, Nguyen YH, VanVeller B, Du L, Phillips DL. Investigation of a Series of 2-(2'-Hydroxyaryl)benzazole Derivatives: Photophysical Properties, Excited-State Intramolecular Proton-Transfer Reactions, and Observation of Long-Lived Triplet Excited States. J Phys Chem B 2021; 125:12981-12989. [PMID: 34797676 DOI: 10.1021/acs.jpcb.1c05798] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Excited state intramolecular proton transfer (ESIPT) has drawn much attention for its important applications in a variety of areas. Here, the steady-state and time-resolved absorption spectroscopic experiments as well as DFT/TD-DFT calculations are employed to study the photophysical properties and photochemical reaction mechanisms of 2-(2'-hydroxyphenyl) benzoxazole (HBO) and selected derivatives (compounds 1-3). Because of their larger π-conjugation framework, compounds 1-3 display red-shifted absorbance but blue-shifted fluorescence compared with HBO. A fast ESIPT process is observed directly for HBO while compound 3 has an enol/keto equilibrium type of ESIPT that exhibits dual emission. Interestingly, only the emission of the enol form is observed for compounds 1 and 2 which suggests that the ESIPT process is strongly inhibited. These results indicate the decoration with electron-withdrawing groups such as thiadiazol and pyrazine on the hydroxyphenyl ring (compounds 1 and 2) apparently suppresses the proton-transfer processes in their excited states. Whereas the ESIPT process is rarely increased for compound 3 that modified with the phenanthrol ring, because the effective conjugation is reduced for compound 3 compared with HBO. The work here provides fundamental insights that may be useful for designing novel ESIPT molecules in the future.
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Affiliation(s)
- Yuanchun Li
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, P.R. China.,Department of Chemistry, The University of Hong Kong, Hong Kong, Hong Kong, S.A.R., P.R. China
| | - Xueqin Bai
- Department of Chemistry, The University of Hong Kong, Hong Kong, Hong Kong, S.A.R., P.R. China
| | - Runhui Liang
- Department of Chemistry, The University of Hong Kong, Hong Kong, Hong Kong, S.A.R., P.R. China
| | - Xiting Zhang
- Department of Chemistry, The University of Hong Kong, Hong Kong, Hong Kong, S.A.R., P.R. China
| | - Yen H Nguyen
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Brett VanVeller
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Lili Du
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, P.R. China.,Department of Chemistry, The University of Hong Kong, Hong Kong, Hong Kong, S.A.R., P.R. China
| | - David Lee Phillips
- Department of Chemistry, The University of Hong Kong, Hong Kong, Hong Kong, S.A.R., P.R. China
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14
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Chaihan K, Bui TT, Goubard F, Kungwan N. Tunable keto emission of 2-(2′-hydroxyphenyl)benzothiazole derivatives with π-expansion, substitution and additional proton transfer site for excited-state proton transfer-based fluorescent probes: Theoretical insights. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113450] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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15
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Santos EM, Sheng W, Esmatpour Salmani R, Tahmasebi Nick S, Ghanbarpour A, Gholami H, Vasileiou C, Geiger JH, Borhan B. Design of Large Stokes Shift Fluorescent Proteins Based on Excited State Proton Transfer of an Engineered Photobase. J Am Chem Soc 2021; 143:15091-15102. [PMID: 34516091 DOI: 10.1021/jacs.1c05039] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The incredible potential for fluorescent proteins to revolutionize biology has inspired the development of a variety of design strategies to address an equally broad range of photophysical characteristics, depending on potential applications. Of these, fluorescent proteins that simultaneously exhibit high quantum yield, red-shifted emission, and wide separation between excitation and emission wavelengths (Large Stokes Shift, LSS) are rare. The pursuit of LSS systems has led to the formation of a complex, obtained from the marriage of a rationally engineered protein (human cellular retinol binding protein II, hCRBPII) and different fluorogenic molecules, capable of supporting photobase activity. The large increase in basicity upon photoexcitation leads to protonation of the fluorophore in the excited state, dramatically red-shifting its emission, leading to an LSS protein/fluorophore complex. Essential for selective photobase activity is the intimate involvement of the target protein structure and sequence that enables Excited State Proton Transfer (ESPT). The potential power and usefulness of the strategy was demonstrated in live cell imaging of human cell lines.
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Affiliation(s)
- Elizabeth M Santos
- Michigan State University, Department of Chemistry, East Lansing, Michigan 48824, United States
| | - Wei Sheng
- Michigan State University, Department of Chemistry, East Lansing, Michigan 48824, United States
| | | | - Setare Tahmasebi Nick
- Michigan State University, Department of Chemistry, East Lansing, Michigan 48824, United States
| | - Alireza Ghanbarpour
- Michigan State University, Department of Chemistry, East Lansing, Michigan 48824, United States
| | - Hadi Gholami
- Michigan State University, Department of Chemistry, East Lansing, Michigan 48824, United States
| | - Chrysoula Vasileiou
- Michigan State University, Department of Chemistry, East Lansing, Michigan 48824, United States
| | - James H Geiger
- Michigan State University, Department of Chemistry, East Lansing, Michigan 48824, United States
| | - Babak Borhan
- Michigan State University, Department of Chemistry, East Lansing, Michigan 48824, United States
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16
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Zhao X, Li X, Liang S, Dong X, Zhang Z. 3-Hydroxyflavone derivatives: promising scaffolds for fluorescent imaging in cells. RSC Adv 2021; 11:28851-28862. [PMID: 35478549 PMCID: PMC9038104 DOI: 10.1039/d1ra04767a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/21/2021] [Indexed: 11/21/2022] Open
Abstract
As a typical class of excited-state intramolecular proton transfer (ESIPT) molecules, 3-hydroxyflavone derivatives (3HF, also known as flavonols) have received much attention recently. Thereinto, the role of hydrophobic microenvironment is significant importance in promoting the process and effects of ESIPT, which can be regulated by the solvents, the existence of metal ions and proteins rich with α-helix structures or the advanced DNA structures. Considering that plenty of biological macromolecules offer cellular hydrophobic microenvironment, enhancing the ESIPT effects and resulting in dual emission, 3HF could be a promising scaffold for the development of fluorescent imaging in cells. Furthermore, as the widespread occurance of compounds with biological activity in plants, 3HF derivatives are much more secure to be cellular diagnosis and treatment integrated fluorescent probes. In this review, multiple regulatory strategies for the fluorescence emission of 3HF derivatives have been collectively and comprehensively analyzed, including the solvent effects, metal chelation, interaction with proteins or DNAs, which would be beneficial for ESIPT-promoting or ESIPT-blocking processes and then enhance or control the fluorescence emission of 3HF effectively. We expect that this review would provide a new perspective to develop novel 3HF-based fluorescent sensors for imaging in cells and plants.
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Affiliation(s)
- Xueke Zhao
- National Local Joint Engineering Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University Wuhan Hubei 430073 P. R. China
| | - Xiang Li
- College of Chemistry and Molecular Engineering, Peking University Beijing 100871 P. R. China .,School of Chemistry, Central China Normal University Wuhan Hubei 430079 P. R. China
| | - Shuyu Liang
- College of Chemistry and Molecular Engineering, Peking University Beijing 100871 P. R. China
| | - Xiongwei Dong
- National Local Joint Engineering Laboratory for Advanced Textile Processing and Clean Production, Wuhan Textile University Wuhan Hubei 430073 P. R. China
| | - Zhe Zhang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou Key Laboratory for Clean Energy and Materials, Guangzhou University Guangzhou 510006 China
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17
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The effect of ring aromaticity on ESIPT behavior and photophysical properties of 2-(2′-hydroxyphenyl)- 4-chloromethylthiazole derivatives: A TD-DFT study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116517] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Zhan H, Pu S, Liu J, Wang Y, Liu X, Tao Y, Fei X, Tian J. New insights into the detection mechanism of β-galactosidase in living cells with fluorescent probes. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Zhan H, Wang Y, Li Z, Tang Z, Tian J, Fei X. Investigating the Influence of Electronic Effects of Functional Groups on the Fluorescence Mechanism of Probes in Water Samples. J Phys Chem A 2021; 125:2866-2875. [PMID: 33823591 DOI: 10.1021/acs.jpca.1c00108] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This study investigates the fluorescence quenching mechanism of formaldehyde detection probe Naph1 and its contrast probe Naph3 in water samples and discussed the effect of the electron-donating group and electron-withdrawing group on fluorescence characteristics based on density functional theory (DFT) and time-dependent density functional theory (TD-DFT). We optimized the structures of the four probes Naph1, Naph1-S, Naph3, and Naph3-S (Scheme 1) and calculated the absorption and emission spectra, which were in good agreement with the experiment. Frontier molecular orbitals (FMOs) were used to analyze the charge arrangement in the excited state. To investigate the intramolecular proton transfer (ESIPT) phenomenon, a potential energy curve was constructed. The amount of fragment charge transfer was analyzed by the IFCT method, and then it was determined whether there was an intramolecular charge transfer (ICT) process. It was found that there was an ICT process in Naph3. The electronic effect of the functional groups did not determine the ICT characteristics and the fluorescence characteristics of the substance. Furthermore, the spin-orbit coupling (SOC) constant based on the intersystem crossing (ISC) was supplemented, which showed that the fluorescence quenching of Naph1 and Naph3 was caused by the ISC and the corresponding quenching of Naph3-S was caused by charge transfer (CT) in the excited state.
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Affiliation(s)
- Hongbin Zhan
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Yi Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Zixian Li
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Zhe Tang
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, P. R. China
| | - Jing Tian
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Xu Fei
- Lab Analyst of Network Information Center, Dalian Polytechnic University, Dalian 116034, P. R. China
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20
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Yang Y, Luo X, Ma F, Li Y. Substituent effect on ESIPT mechanisms and photophysical properties of HBT derivatives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 250:119375. [PMID: 33421666 DOI: 10.1016/j.saa.2020.119375] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 12/05/2020] [Accepted: 12/20/2020] [Indexed: 06/12/2023]
Abstract
Substituent effects on excited-state intramolecular proton transfer (ESIPT) and photophysical properties of 2-(2-Hydroxyphenyl) benzothiazole (HBT) derivatives have been theoretically unveiled via the density functional theory (DFT) and time-dependent DFT (TDDFT). The optimized geometrical configurations and normal mode analyses confirm that the proton transfer processes are more reactive in excited state. Through calculating the activation energies and rate constants of ESIPT processes, finding that the processes are increasingly inactive when substituent group changes from -CN, -CO2Me, -Cl, -Me, -NMe2 to -NO2. In addition, the photophysical properties analyses indicate the vertical transition energies are in good agreement with those observed in experiment. Note that all the absorption and emission maxima of enol and keto forms have the significant red-shift. In order to clarify the substituent effect on ESIPT and photophysical properties, we draw the frontier molecular orbitals (FMOs) isosurfaces and calculate the distances of electrons and holes and atomic charges. It follows that the intramolecular charge transfer (ICT) degrees are increasingly enlarged as substituting from -CN, -CO2Me, -Cl, -Me, -NMe2 to -NO2 groups, which not only causes the red-shift of absorption and emission of enol and keto forms, but also affects the charge distribution of proton donor and acceptor, inhibiting the occurrence of ESIPT processes.
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Affiliation(s)
- Yunfan Yang
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, PR China; School of Physics, Liaoning University, Shenyang 110036, PR China.
| | - Xiao Luo
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Fengcai Ma
- School of Physics, Liaoning University, Shenyang 110036, PR China
| | - Yongqing Li
- School of Physics, Liaoning University, Shenyang 110036, PR China.
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21
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Goodwin JW, Kruger PE, Hawes CS. Structural and spectroscopic insights on the coordination chemistry of the rigid heterotopic chelating ligand 1H-pyrazolo[4,3-h]quinoline. J COORD CHEM 2021. [DOI: 10.1080/00958972.2020.1868041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Jack W. Goodwin
- School of Chemical and Physical Sciences, Keele University, Keele, UK
| | - Paul E. Kruger
- MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Physical and Chemical Sciences, University of Canterbury, Christchurch, New Zealand
| | - Chris S. Hawes
- School of Chemical and Physical Sciences, Keele University, Keele, UK
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22
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Gayathri P, Kanagajothi K, Nag P, Anand N, Reddy VS, Moon D, Anthony SP, Madhu V. Symmetrical and unsymmetrical thiazole-based ESIPT derivatives: the highly selective fluorescence sensing of Cu 2+ and structure-controlled reversible mechanofluorochromism. CrystEngComm 2021. [DOI: 10.1039/d1ce00927c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Excited state intramolecular proton transfer (ESIPT) process-based organic fluorophores provide an opportunity to develop large Stokes-shifted multifunctional fluorescence systems for light emitting, chemosensing and bioimaging applications.
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Affiliation(s)
- Parthasarathy Gayathri
- School of Chemical & Biotechnology, SASTRA Deemed University, Thanjavur-613401, Tamil Nadu, India
| | - Karuppaiah Kanagajothi
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore-641 114, Tamil Nadu, India
| | - Probal Nag
- Indian Institute of Science Education and Research Thiruvananthapuram, Kerala 695551, India
| | - Neethu Anand
- Indian Institute of Science Education and Research Thiruvananthapuram, Kerala 695551, India
| | | | - Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory, 80 Jigokro-127 beongil, Nam-gu, Pohang, Gyeongbuk, Korea
| | | | - Vedichi Madhu
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore-641 114, Tamil Nadu, India
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23
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Liu ZY, Hu JW, Huang TH, Chen KY, Chou PT. Excited-state intramolecular proton transfer in the kinetic-control regime. Phys Chem Chem Phys 2020; 22:22271-22278. [PMID: 33001109 DOI: 10.1039/d0cp03408h] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A new series of molecules bearing a 2,11-dihydro-1H-cyclopenta[de]indeno[1,2-b]quinoline (CPIQ) chromophore with the N-HN type of intramolecular hydrogen bond are strategically designed and synthesized, among which CPIQ-OH, CPIQ-NHAc and CPIQ-NHTs in solution exhibit a single emission band with an anomalously large Stokes shift, whereas CPIQ-NH2 and CPIQ-NHMe show apparent dual-emission property. This, in combination with time-resolved spectroscopy and the computational approach, leads us to conclude that CPIQ-OH, CPIQ-NHAc and CPIQ-NHTs undergo ultrafast, highly exergonic excited-state intramolecular proton transfer (ESIPT), while a finite rate of ESIPT is observed for CPIQ-NH2 and CPIQ-NHMe with a time constant of 117 ps and 39 ps, respectively, in acetonitrile at room-temperature. Further temperature-dependent studies deduce an appreciable ESIPT barrier for CPIQ-NH2 and CPIQ-NHMe. Different from most of the barrier associated ESIPT molecules that are commonly in the thermodynamic-control regime, i.e. found in the thermal pre-equilibrium between excited normal and proton-transfer tautomer states, CPIQ-NH2 and CPIQ-NHMe cases are in the kinetic-control regime where ESIPT is irreversible with a significant barrier. The barrier is able to be tuned by the electronic properties of the -R group in the NR-H proton donor site, resulting in ratiometric fluorescence for normal versus tautomer emission.
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Affiliation(s)
- Zong-Ying Liu
- Department of Chemistry, National Taiwan University, Taipei, 10617 Taiwan, Republic of China.
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24
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Tang Z, Zhou P. New Insights into the Excited State Dynamics of Quinoline–Pyrazole Isomerism. J Phys Chem B 2020; 124:3400-3407. [DOI: 10.1021/acs.jpcb.0c01624] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Zhe Tang
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, P.R. China
| | - Panwang Zhou
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, P.R. China
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25
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Mishra VR, Ghanavatkar CW, Sekar N. Towards NIR‐Active Hydroxybenzazole (HBX)‐Based ESIPT Motifs: A Recent Research Trend. ChemistrySelect 2020. [DOI: 10.1002/slct.201904558] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Virendra R. Mishra
- Department of Dyestuff Technology Institute of Chemical Technology (ICT), Matunga, Mumbai India
| | | | - Nagaiyan Sekar
- Department of Dyestuff Technology Institute of Chemical Technology (ICT), Matunga, Mumbai India
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26
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Ramu YL, Jagadeesha K, Shivalingaswamy T, Ramegowda M. Microsolvation, hydrogen bond dynamics and excited state hydrogen atom transfer mechanism of 2′,4′-dihydroxychalcone. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2019.137030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Zhang N, Zhang T, Wen L, Wang L, Yan J, Zheng K. Tuning the excited-state intramolecular proton transfer (ESIPT) process of indole–pyrrole systems by π-conjugation and substitution effects: experimental and computational studies. Phys Chem Chem Phys 2020; 22:1409-1415. [DOI: 10.1039/c9cp05064g] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of amino (NH)-type hydrogen-bonding (H-bonding) compounds, BNDAB-1–4, containing π-enlarged indole and β-ethoxycarbonyl-substituted pyrrole units were designed and synthesized.
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Affiliation(s)
- Nuonuo Zhang
- College of Materials and Chemical Engineering
- Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials
- China Three Gorges University
- Yichang 443002
- P. R. China
| | - Tingting Zhang
- College of Materials and Chemical Engineering
- Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials
- China Three Gorges University
- Yichang 443002
- P. R. China
| | - Liu Wen
- College of Materials and Chemical Engineering
- Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials
- China Three Gorges University
- Yichang 443002
- P. R. China
| | - Long Wang
- College of Materials and Chemical Engineering
- Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials
- China Three Gorges University
- Yichang 443002
- P. R. China
| | - Jiaying Yan
- College of Materials and Chemical Engineering
- Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials
- China Three Gorges University
- Yichang 443002
- P. R. China
| | - Kaibo Zheng
- College of Materials and Chemical Engineering
- Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials
- China Three Gorges University
- Yichang 443002
- P. R. China
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28
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Evidence for stepwise excited state double proton transfer process in quinolone–pyrazole triggered by methanol solvent. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2019.110553] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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29
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Wang J, Liu Q, Yang D. Unraveling photoexcitation dynamical behavior for bis (salicylidene)‐1,5‐diaminonaphthalene (BSD) system. J PHYS ORG CHEM 2019. [DOI: 10.1002/poc.4033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jiemin Wang
- Department of Physics and Electronic InformationLuoyang Normal University Luoyang PR China
- Henan Key Laboratory of Electromagnetic Transformation and DetectionLuoyang Normal University Luoyang PR China
| | - Qiang Liu
- Department of Physics and Electronic InformationLuoyang Normal University Luoyang PR China
- Henan Key Laboratory of Electromagnetic Transformation and DetectionLuoyang Normal University Luoyang PR China
| | - Dapeng Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical PhysicsChinese Academy of Sciences Dalian PR China
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30
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Zhang M, Cheng R, Lan J, Zhang H, Yan L, Pu X, Huang Z, Wu D, You J. Oxidative C–H/C–H Cross-Coupling of [1,2,4]Triazolo[1,5-a]pyrimidines with Indoles and Pyrroles: Discovering Excited-State Intramolecular Proton Transfer (ESIPT) Fluorophores. Org Lett 2019; 21:4058-4062. [DOI: 10.1021/acs.orglett.9b01238] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Mangang Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Rui Cheng
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Huaxing Zhang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Lipeng Yan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Xingwen Pu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Zhenmei Huang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Di Wu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
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31
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Dwivedi BK, Singh VD, Paitandi RP, Pandey DS. Substituent-directed ESIPT-coupled Aggregation-induced Emission in Near-infrared-emitting Quinazoline Derivatives. Chemphyschem 2018; 19:2672-2682. [DOI: 10.1002/cphc.201800579] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Bhupendra Kumar Dwivedi
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi - 221 005, (U. P. India
| | - Vishwa Deepak Singh
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi - 221 005, (U. P. India
| | - Rajendra Prasad Paitandi
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi - 221 005, (U. P. India
| | - Daya Shankar Pandey
- Department of Chemistry; Institute of Science; Banaras Hindu University; Varanasi - 221 005, (U. P. India
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32
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Zanocco RP, Valdebenito S, Gidi Y, Zapata-Torres G, Lemp E, Nonell S, Zanocco AL. Intense White Molecular Fluorescence from Naphthoxazole-Quinoline Derivatives. Photochem Photobiol 2018; 94:1092-1099. [PMID: 29964295 DOI: 10.1111/php.12970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 06/15/2018] [Indexed: 01/31/2023]
Abstract
Naphthoxazole derivatives are small heterocyclic compounds endowed with outstanding fluorescence properties. In this work, we report a detailed study of the intense white light fluorescence observed in naphthoxazole-quinoline dyads in solvent mixtures including at least a strong hydrogen bonding solvent. The same phenomenon was also studied in inclusion complexes naphthoxazole derivatives-sulfonated-βCD either in aqueous solution as well as in solid phase. A novel mechanism of white molecular fluorescence generation based on solvent-to-fluorophore proton transfer facilitated by ground state hydrogen bonding was characterized. The emission combines both, a blue charge transfer fluorescence emitted by the locally excited singlet state along with a red-shifted emission from a proton transfer complex.
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Affiliation(s)
- Renzo P Zanocco
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Silvana Valdebenito
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Yasser Gidi
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Gerald Zapata-Torres
- Departamento de Química Inorgánica y Analítica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Else Lemp
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Santi Nonell
- Institut Químic de Sarrià, Universitat Ramon Llull, Barcelona, Spain
| | - Antonio L Zanocco
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
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33
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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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34
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Zhang T, Yang G, Jia M, Song X, Zhang Q, Yang D. A detailed DFT/TDDFT study on excited-state intramolecular hydrogen bonding dynamics and proton-transfer mechanism of 2-phenanthro[9,10-d]oxazol-2-yl-phenol. J PHYS ORG CHEM 2018. [DOI: 10.1002/poc.3857] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Tianjie Zhang
- School of Mathematics and Statics; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Guang Yang
- Basic Teaching Department; Jiaozuo University; Jiaozuo China
| | - Min Jia
- School of Mathematics and Statics; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Xiaoyan Song
- School of Mathematics and Statics; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Qiaoli Zhang
- School of Mathematics and Statics; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Dapeng Yang
- School of Mathematics and Statics; North China University of Water Resources and Electric Power; Zhengzhou China
- State Key Laboratory of Molecular Reaction Dynamics, Theoretical and Computational Chemistry, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian China
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35
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Yang D, Yang G, Zhao J, Song N, Zheng R, Wang Y. Solvent controlling excited state proton transfer reaction in quinoline/isoquinoline-pyrazole isomer QP-I: A theoretical study. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3729] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dapeng Yang
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
- Department of Basic Science; Jiaozuo University; Jiaozuo China
| | - Guang Yang
- Department of Basic Science; Jiaozuo University; Jiaozuo China
| | - Jinfeng Zhao
- State Key Laboratory of Molecular Reaction Dynamics, Theoretical and Computational Chemistry, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian China
| | - Nahong Song
- College of Computer and Information Engineering; Henan University of Economics and Law; Zhengzhou China
| | - Rui Zheng
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Yusheng Wang
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
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36
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Tigineh GT, Liu LK. Solvatochromic photoluminescence investigation of functional Schiff-bases: A systematic study of substituent effects. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.02.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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37
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Tang X, Zhang J, Liu L, Yang D, Wang H, He F. Synthesis of 13-substituted derivatives of berberine: Aggregation-induced emission enhancement and pH sensitive property. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.01.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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38
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Singh VK, Prasad R, Koch B, Hasan SH, Dubey M. Pyrene–fluorescein-based colour-tunable AIE-active hybrid fluorophore material for potential live cell imaging applications. NEW J CHEM 2017. [DOI: 10.1039/c7nj00106a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A novel hybrid fluorophore (FHPY) has been synthesized based on two standard fluorescent hydrophobic–hydrophilic molecules, viz. pyrene and fluorescein, with an objective to tune the AIE along with the morphology and live cell imaging.
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Affiliation(s)
- Vikas Kumar Singh
- Department of Chemistry
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Ritika Prasad
- Department of Zoology
- Institute of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Biplob Koch
- Department of Zoology
- Institute of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Syed Hadi Hasan
- Department of Chemistry
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
| | - Mrigendra Dubey
- Department of Chemistry
- Indian Institute of Technology (Banaras Hindu University)
- Varanasi-221005
- India
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39
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Wu KL, Huckaba AJ, Clifford JN, Yang YW, Yella A, Palomares E, Grätzel M, Chi Y, Nazeeruddin MK. Molecularly Engineered Ru(II) Sensitizers Compatible with Cobalt(II/III) Redox Mediators for Dye-Sensitized Solar Cells. Inorg Chem 2016; 55:7388-95. [PMID: 27420188 DOI: 10.1021/acs.inorgchem.6b00427] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Thiocyanate-free isoquinazolylpyrazolate Ru(II) complexes were synthesized and applied as sensitizers in dye-sensitized solar cells (DSCs). Unlike most other successful Ru sensitizers, Co-based electrolytes were used, and resulting record efficiency of 9.53% was obtained under simulated sunlight with an intensity of 100 mW cm(-2). Specifically, dye 51-57dht.1 and an electrolyte based on Co(phen)3 led to measurement of a JSC of 13.89 mA cm(-2), VOC of 900 mV, and FF of 0.762 to yield 9.53% efficiency. The improved device performances were achieved by the inclusion of 2-hexylthiophene units onto the isoquinoline subunits, in addition to lengthening the perfluoroalkyl chain on the pyrazolate chelating group, which worked to increase light absorption and decrease recombination effects when using the Co-based electrolyte. As this study shows, Ru(II) sensitizers bearing sterically demanding ligands can allow successful utilization of important Co electrolytes and high performance.
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Affiliation(s)
- Kuan-Lin Wu
- Department of Chemistry and Low Carbon Energy Research Center, National Tsing Hua University , Hsinchu 30013, Taiwan.,Institute of Chemical Sciences and Engineering, Laboratory of Photonics and Interfaces, Ecole Polytechnique Fédérale de Lausanne , 1015 Lausanne, Switzerland
| | - Aron J Huckaba
- Group for Molecular Engineering of Functional Materials, Ecole Polytechnique Federale de Lausanne Valais Wallis , Rue de l'Indutrie 17, 1950 Sion, Valais, Switzerland
| | - John N Clifford
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Avda. Països Catalans 16, 43007 Tarragona, Spain
| | - Ya-Wen Yang
- Department of Chemistry and Low Carbon Energy Research Center, National Tsing Hua University , Hsinchu 30013, Taiwan
| | - Aswani Yella
- Institute of Chemical Sciences and Engineering, Laboratory of Photonics and Interfaces, Ecole Polytechnique Fédérale de Lausanne , 1015 Lausanne, Switzerland
| | - Emilio Palomares
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology , Avda. Països Catalans 16, 43007 Tarragona, Spain.,ICREA , Avda. Lluis Companys, 23, E-08010 Barcelona, Spain
| | - Michael Grätzel
- Institute of Chemical Sciences and Engineering, Laboratory of Photonics and Interfaces, Ecole Polytechnique Fédérale de Lausanne , 1015 Lausanne, Switzerland
| | - Yun Chi
- Department of Chemistry and Low Carbon Energy Research Center, National Tsing Hua University , Hsinchu 30013, Taiwan
| | - Mohammad Khaja Nazeeruddin
- Group for Molecular Engineering of Functional Materials, Ecole Polytechnique Federale de Lausanne Valais Wallis , Rue de l'Indutrie 17, 1950 Sion, Valais, Switzerland
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40
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Lin J, Chau NY, Liao JL, Wong WY, Lu CY, Sie ZT, Chang CH, Fox MA, Low PJ, Lee GH, Chi Y. Bis-Tridentate Iridium(III) Phosphors Bearing Functional 2-Phenyl-6-(imidazol-2-ylidene)pyridine and 2-(Pyrazol-3-yl)-6-phenylpyridine Chelates for Efficient OLEDs. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00205] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Lin
- Department
of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Nga-Yuen Chau
- Department
of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
- Institute
of Molecular Functional Materials, Department of Chemistry and Institute
of Advanced Materials, Hong Kong Baptist University, Waterloo
Road, Hong Kong, People’s Republic of China
| | - Jia-Ling Liao
- Department
of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Wai-Yeung Wong
- Institute
of Molecular Functional Materials, Department of Chemistry and Institute
of Advanced Materials, Hong Kong Baptist University, Waterloo
Road, Hong Kong, People’s Republic of China
| | - Cheng-Yu Lu
- Department
of Photonics Engineering, Yuan Ze University, Chungli 32003, Taiwan
| | - Zong-Ting Sie
- Department
of Photonics Engineering, Yuan Ze University, Chungli 32003, Taiwan
| | - Chih-Hao Chang
- Department
of Photonics Engineering, Yuan Ze University, Chungli 32003, Taiwan
| | - Mark A. Fox
- Department
of Chemistry, Durham University, South Road, Durham DH1 3LE, U.K
| | - Paul J. Low
- School
of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Crawley 6009, Western Australia, Australia
| | - Gene-Hsiang Lee
- Department
of Chemistry and Instrumentation Center, National Taiwan University, Taipei 10617, Taiwan
| | - Yun Chi
- Department
of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
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41
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Jadhav MM, Rhyman L, Ramasami P, Sekar N. Unfolding ESIPT in Bis-2,5-(2-benzoxazolyl) Hydroquinone and 2,5-Bis(benzo[d]oxazol-2-yl)-4-methoxyphenol: a Comprehensive Computational Approach. J Fluoresc 2016; 26:1295-307. [PMID: 27147227 DOI: 10.1007/s10895-016-1816-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Accepted: 04/26/2016] [Indexed: 11/30/2022]
Abstract
The photo-physical behaviour of bis-2,5-(2-benzoxazolyl) hydroquinone and 2,5-bis (benzo[d]oxazol-2-yl)-4-methoxyphenol was studied using the Density Functional Theory (DFT) and Time-Dependent Density Functional Theory (TD-DFT). All the possible rotamers were optimized to obtain global minimum optimized structure. The theoretical absorption and emission values of rotamers estimated by using TD-DFT [TD-B3LYP/6-31G(d)] are in good agreement with experimental absorption and emission wavelengths. Based on the absorption values, the contribution of respective rotamer is determined theoretically.
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Affiliation(s)
- Manoj M Jadhav
- Tinctorial Chemistry Group, Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai, Maharashtra, 400019, India
| | - Lydia Rhyman
- Computational Chemistry Group, Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, 80837, Mauritius
| | - Ponnadurai Ramasami
- Computational Chemistry Group, Department of Chemistry, Faculty of Science, University of Mauritius, Réduit, 80837, Mauritius.
| | - Nagaiyan Sekar
- Tinctorial Chemistry Group, Department of Dyestuff Technology, Institute of Chemical Technology, N. P. Marg, Matunga, Mumbai, Maharashtra, 400019, India.
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42
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Padalkar VS, Seki S. Excited-state intramolecular proton-transfer (ESIPT)-inspired solid state emitters. Chem Soc Rev 2016; 45:169-202. [PMID: 26506465 DOI: 10.1039/c5cs00543d] [Citation(s) in RCA: 548] [Impact Index Per Article: 68.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Solid state emitters based on excited state intramolecular proton transfer (ESIPT) have been attracting considerable interest since the past few years in the field of optoelectronic devices because of their desirable unique photophysical properties. The photophysical properties of the solid state ESIPT fluorophores determine their possible applicability in functional materials. Less fluorescence quantum efficiencies and short fluorescence lifetime in the solid state are the shortcomings of the existing ESIPT solid state emitters. Designing of ESIPT chromophores with high fluorescence quantum efficiencies and a long fluorescence lifetime in the solid state is a challenging issue because of the unclear mechanism of the solid state emitters in the excited state. Reported design strategies, detailed photophysical properties, and their applications will help in assisting researchers to overcome existing challenges in designing novel solid state ESIPT fluorophores for promising applications. This review highlights recently developed solid state ESIPT emitters with focus on molecular design strategies and their photophysical properties, reported in the last five years.
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Affiliation(s)
- Vikas S Padalkar
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan.
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan.
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43
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Mahapatra AK, Mondal S, Manna SK, Maiti K, Maji R, Ali SS, Mandal S, Uddin MR, Maiti DK. Highly Selective Ratiometric Fluorescent Probes for Detection of Perborate Based on Excited-State Intramolecular Proton Transfer (ESIPT) in Environmental Samples and Living Cells. ChemistrySelect 2016. [DOI: 10.1002/slct.201500032] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ajit Kumar Mahapatra
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Sanchita Mondal
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Saikat Kumar Manna
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Kalipada Maiti
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Rajkishor Maji
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Syed Samim Ali
- Department of Chemistry; Indian Institute of Engineering Science and Technology; Shibpur; Howrah- 711103
| | - Sukhendu Mandal
- Department of Microbiology; University of Calcutta; Kolkata- 700019 India
| | - Md. Raihan Uddin
- Department of Microbiology; University of Calcutta; Kolkata- 700019 India
| | - Dilip Kumar Maiti
- Department of Chemistry; University of Calcutta; Kolkata- 700009 India
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44
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Hydrogen bonds in quinoline N-oxide derivatives: first-principle molecular dynamics and metadynamics ground state study. Struct Chem 2015. [DOI: 10.1007/s11224-015-0720-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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45
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Liu YH, Lan SC, Zhu C, Lin SH. Intersystem Crossing Pathway in Quinoline–Pyrazole Isomerism: A Time-Dependent Density Functional Theory Study on Excited-State Intramolecular Proton Transfer. J Phys Chem A 2015; 119:6269-74. [DOI: 10.1021/acs.jpca.5b03557] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Yu-Hui Liu
- Department
of Physics, College of Mathematics and Physics, Bohai University, Jinzhou 121013, China
- Department
of Applied Chemistry, Institute of Molecular Science and Center for
Interdisciplinary Molecular Science, National Chiao-Tung University, Hsinchu 30050, Taiwan
| | - Sheng-Cheng Lan
- Department
of Physics, College of Mathematics and Physics, Bohai University, Jinzhou 121013, China
| | - Chaoyuan Zhu
- Department
of Applied Chemistry, Institute of Molecular Science and Center for
Interdisciplinary Molecular Science, National Chiao-Tung University, Hsinchu 30050, Taiwan
| | - Sheng-Hsien Lin
- Department
of Applied Chemistry, Institute of Molecular Science and Center for
Interdisciplinary Molecular Science, National Chiao-Tung University, Hsinchu 30050, Taiwan
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46
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Hristova S, Dobrikov G, Kamounah FS, Kawauchi S, Hansen PE, Deneva V, Nedeltcheva D, Antonov L. 10-Hydroxybenzo[h]quinoline: switching between single- and double-well proton transfer through structural modifications. RSC Adv 2015. [DOI: 10.1039/c5ra20057a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Proton transfer in HBQ and modified compounds was investigated experimentally (steady state absorption and emission spectroscopy, NMR and chemometrics) and theoretically (DFT and TD-DFT M06-2X/TZVP calculations) in ground and excited singlet state.
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Affiliation(s)
- S. Hristova
- Institute of Organic Chemistry with Centre of Phytochemistry
- Bulgarian Academy of Sciences
- 1113 Sofia
- Bulgaria
| | - G. Dobrikov
- Institute of Organic Chemistry with Centre of Phytochemistry
- Bulgarian Academy of Sciences
- 1113 Sofia
- Bulgaria
| | - F. S. Kamounah
- Roskilde University
- Department of Science
- Systems and Models
- Roskilde
- Denmark
| | - S. Kawauchi
- Tokyo Institute of Technology
- Department of Polymer Science
- Tokyo 152
- Japan
| | - P. E. Hansen
- Roskilde University
- Department of Science
- Systems and Models
- Roskilde
- Denmark
| | - V. Deneva
- Institute of Organic Chemistry with Centre of Phytochemistry
- Bulgarian Academy of Sciences
- 1113 Sofia
- Bulgaria
| | - D. Nedeltcheva
- Institute of Organic Chemistry with Centre of Phytochemistry
- Bulgarian Academy of Sciences
- 1113 Sofia
- Bulgaria
| | - L. Antonov
- Institute of Organic Chemistry with Centre of Phytochemistry
- Bulgarian Academy of Sciences
- 1113 Sofia
- Bulgaria
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47
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Ku HY, Tong B, Chi Y, Kao HC, Yeh CC, Chang CH, Lee GH. Luminescent Pt(ii) complexes bearing dual isoquinolinyl pyrazolates: fundamentals and applications. Dalton Trans 2015; 44:8552-63. [DOI: 10.1039/c4dt03028a] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Pt(ii) complex [Pt(Lx)2], LxH = 6-t-butyl-1-(3-trifluoromethyl-1H-pyrazol-5-yl) isoquinoline, with three colored morphologies can be interconverted by grinding and/or wetting with solvents.
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Affiliation(s)
- Hsiao-Yun Ku
- Department of Chemistry
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Bihai Tong
- Department of Chemistry
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
- College of Metallurgy and Resources
| | - Yun Chi
- Department of Chemistry
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Hao-Che Kao
- Department of Photonics Engineering
- Yuan Ze University
- Chungli 32003
- Taiwan
| | - Chia-Chi Yeh
- Department of Photonics Engineering
- Yuan Ze University
- Chungli 32003
- Taiwan
| | - Chih-Hao Chang
- Department of Photonics Engineering
- Yuan Ze University
- Chungli 32003
- Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry and Instrumentation Center
- National Taiwan University
- Taipei 10617
- Taiwan
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48
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Singh RS, Gupta RK, Paitandi RP, Dubey M, Sharma G, Koch B, Pandey DS. Morphological tuning via structural modulations in AIE luminogens with the minimum number of possible variables and their use in live cell imaging. Chem Commun (Camb) 2015; 51:9125-8. [DOI: 10.1039/c5cc02488a] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present three novel AIE luminogens based on a quinoline–BODIPY platform with strategic tuning of the morphology and optical properties of the nanoaggregates.
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Affiliation(s)
- Roop Shikha Singh
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Rakesh Kumar Gupta
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | | | - Mrigendra Dubey
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Gunjan Sharma
- Department of Zoology
- Faculty of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Biplob Koch
- Department of Zoology
- Faculty of Science
- Banaras Hindu University
- Varanasi 221 005
- India
| | - Daya Shankar Pandey
- Department of Chemistry
- Faculty of Science
- Banaras Hindu University
- Varanasi 221 005
- India
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49
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Kaleeswaran P, Azath IA, Tharmaraj V, Pitchumani K. A Ratiometric Tetrazolylpyridine-Based “Turn-On” Fluorescent Chemosensor for Zinc(II) Ion in Aqueous Media. Chempluschem 2014. [DOI: 10.1002/cplu.201402126] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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50
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Patil VS, Padalkar VS, Tathe AB, Gupta VD, Sekar N. Synthesis, photo-physical and DFT studies of ESIPT inspired novel 2-(2',4'-dihydroxyphenyl) benzimidazole, benzoxazole and benzothiazole. J Fluoresc 2013; 23:1019-29. [PMID: 23681947 DOI: 10.1007/s10895-013-1228-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 04/30/2013] [Indexed: 11/25/2022]
Abstract
Novel ESIPT inspired benzimidazole, benzoxazole and benzothiazole were synthesized from 2,4-dihydroxy benzoic acid and 1,2-phenelenediamine, 2-aminophenol, and 2-aminothiophenol respectively. The synthesized 2-(2',4'-dihydroxyphenyl) benzimidazole, benzoxazole and benzothiazole are fluorescent and the emission characteristic are very sensitive to the micro-environment. They show a single absorption and dual emission with large Stokes shift originating from excited state intramolecular proton transfer. The absorption-emission characteristics of all these compounds are studied as a function of pH. The change in the electronic transition, energy levels, and orbital diagrams of synthesized compounds were investigated by the molecular orbital calculation and were correlated with the experimental spectral emission. Experimental absorption and emission wavelengths are in good agreement with those predicted using the Density Functional Theory (DFT) and Time-Dependent Density Functional Theory (TD-DFT) [B3LYP/6-31G(d)].
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Affiliation(s)
- Vikas S Patil
- Tinctorial Chemistry Group, Institute of Chemical Technology (Formerly UDCT), Matunga, Mumbai, Maharashtra, India.
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