1
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Zhang T, Chi H, Guo J, Lu X, Li G. Construction of a Cu 2+-Responsive NIR Fluorescent Probe and the Preliminary Evaluation of its Multifunctional Application. J Fluoresc 2024:10.1007/s10895-024-03610-2. [PMID: 38386248 DOI: 10.1007/s10895-024-03610-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 01/29/2024] [Indexed: 02/23/2024]
Abstract
Cu2+ was deemed as toxic and the most common heavy metal pollution in the water and food. Meanwhile, endogenous Cu2+ was deeply involved in plenty of physiological and pathological processes of human. Cu2+ imbalance was related to multiple diseases. Here we developed a Cu2+-responsive NIR probe HX, which not only demonstrated obvious color change when subjected to Cu2+, but also showed linear-dependent NIR fluorescence emission to Cu2+ concentration for Cu2+ detection and quantification both in vitro and in vivo. When HX was applied to imaging Cu2+ in the cell or living animals, intracellular Cu2+ fluctuation and Cu2+ accumulation in the liver could be visualized to indicate the copper level in the cell or organs with low background signals. Meanwhile, by applying HX to monitor Cu2+ uptake in the tumor, copper transporter function could be evaluated to screen the patient who are sensitivity to platinum drug.
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Affiliation(s)
- Tao Zhang
- Department of Oral, Shanghai Eighth People's Hospital, Xuhui Branch of Shanghai Sixth People's Hospital, Shanghai, 200233, China
| | - Huirong Chi
- Department of Oral, Shanghai Eighth People's Hospital, Xuhui Branch of Shanghai Sixth People's Hospital, Shanghai, 200233, China
| | - Jingjie Guo
- Department of Oral, Shanghai Eighth People's Hospital, Xuhui Branch of Shanghai Sixth People's Hospital, Shanghai, 200233, China
| | - Xinmiao Lu
- Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200235, China.
| | - Guolin Li
- Department of Oral, Shanghai Eighth People's Hospital, Xuhui Branch of Shanghai Sixth People's Hospital, Shanghai, 200233, China.
- Key Laboratory of Microecology-Immune Regulatory Network and Related Diseases, School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang, 154000, P. R. China.
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2
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Lu X, Wu M, Luo Q. Development of a NIR fluorescent probe for fluorescence-assisted EGFR-TKI applicable patients screening and drug resistance monitoring. Eur J Med Chem 2023; 261:115818. [PMID: 37741183 DOI: 10.1016/j.ejmech.2023.115818] [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: 07/30/2023] [Revised: 09/10/2023] [Accepted: 09/11/2023] [Indexed: 09/25/2023]
Abstract
EGFR tyrosine kinase inhibitor exerts significant benefits to non-small cell lung cancer patient, but was also limited by the applicable patient screening and drug resistance. Here we presented with an EGFR-targeted and reactive oxygen species-responsive NIR probe (LX) to achieve both patient screening and drug resistance monitoring for EGFR-tyrosine kinase inhibitor. LX inherited EGFR selectivity and preference from EGFR-tyrosine kinase inhibitor, which only showed specificity to tumor with EGFR mutation. Meanwhile, the near-infrared fluorescence of LX was initially inhibited and could be turned on by intratumoral reactive oxygen species. When LX could bind to tumor EGFR, reactive oxygen species-responsive specific fluorescence was generated to indicate the applicability of tumors to EGFR-tyrosine kinase inhibitor. However, no specific LX fluorescence could be observed in inapplicable tumors due to the lack of specificity between tumor EGFR and LX. Meanwhile, when drug resistance was developed during treatments, obvious intratumoral reactive species oxygen decrease happened, which was also deemed as a significant signal of the drug resistance. By visualizing intratumoral reactive oxygen species fluctuation by responsive fluorescence, drug resistance could be monitored and reported.
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Affiliation(s)
- Xinmiao Lu
- Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200235, China
| | - Muyu Wu
- Department of Nuclear Medicine, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Quanyong Luo
- Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200235, China.
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3
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Artmann K, Pollok CH, Merten C, Nuernberger P. Wavelength-dependent photochemistry of a salicylimine derivative studied with cryogenic and ultrafast spectroscopy approaches. Phys Chem Chem Phys 2022; 24:30017-30026. [PMID: 36472246 DOI: 10.1039/d2cp04488a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Salicylimines are versatile compounds in which an excited-state intramolecular proton transfer and torsional motions may set in upon photoexcitation. Here, we study N-(α-phenylethyl)salicylimine (PESA) to elucidate how the photochemical reaction pathways depend on the excitation wavelength and to what extent the relative photoproduct distribution can be steered towards a desired species. DFT structure and potential energy calculations disclose that the most stable ground-state conformer is an enol species and that the photodynamics may proceed differently depending on the excited state that is reached. With matrix isolation infrared spectroscopy, the predominance of the enol conformer of PESA is confirmed. Illumination of the cryogenic sample with different wavelengths shifts the ratio of enol and keto products, and by sequential irradiation a selective re- and depopulation is possible. Femtosecond transient absorption spectroscopy further reveals that also at room temperature, the outcome of the photoreaction depends on excitation wavelength, and in combination with the calculations, it can be rationalized that the decisive step occurs within the first hundred femtoseconds. Since the ultrafast dynamics mostly match those of similar salicylimines, our findings might also apply to those systems and provide additional insight into their reported sensitivity on excitation energy.
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Affiliation(s)
- Kevin Artmann
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, 93040, Regensburg, Germany.
| | - Corina H Pollok
- Organic Chemistry II, Ruhr University Bochum, 44780, Bochum, Germany.
| | - Christian Merten
- Organic Chemistry II, Ruhr University Bochum, 44780, Bochum, Germany.
| | - Patrick Nuernberger
- Institut für Physikalische und Theoretische Chemie, Universität Regensburg, 93040, Regensburg, Germany.
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4
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Wang Y, Xin C, Zhu L, Sun C. Influence of intermolecular hydrogen bond interaction on fluorescence mechanism for ESIPT characteristic o-Hydroxybenzaldehyde. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Li H, Mu H, Xin C, Cai J, Yuan B, Jin G. Turning ON/OFF the fluorescence of the ESIPT state by changing the hydrogen bond distance and orientation in quinoline–pyrazole derivatives. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132146] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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6
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Qian Y, Gong F, Li J, Ma P, Zhu H, He L, Xia J. A Solvent-Mediated Excited-State Intermolecular Proton Transfer Fluorescent Probe for Fe 3+ Sensing and Cell Imaging. Molecules 2022; 27:516. [PMID: 35056841 PMCID: PMC8778147 DOI: 10.3390/molecules27020516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/02/2022] [Accepted: 01/06/2022] [Indexed: 12/05/2022] Open
Abstract
Constructing excited-state intermolecular proton transfer (ESIPT-e) fluorophores represents significant challenges due to the harsh requirement of bearing a proton donor-acceptor (D-A) system and their matching proton donating-accepting ability in the same molecule. Herein, we synthesized a new-type ESIPT-e fluorophor (2-APC) using the "four-component one-pot" reaction. By the installing of a cyano-group on pyridine scaffold, the proton donating ability of -NH2 was greatly enhanced, enabling 2-APC to undergo ESIPT-e process. Surprisingly, 2-APC exhibited dual-emissions in protic solvents ethanol and normal fluorescence in aprotic solvents, which is vastly different from that of conventional ESIPT-a dyes. The ESIPT emission can be obviously suppressed by Fe3+ due to the coordination reaction of Fe3+ with the A-D system in 2-APC. From this basis, a highly sensitive and selective method was established using 2-APC as a fluorescent probe, which offers the sensitive detection of Fe3+ ranging from 0 to 13 μM with the detection limit of 7.5 nM. The recovery study of spiked Fe3+ measured by the probe showed satisfactory results (97.2103.4%) with the reasonable RSD ranging from 3.1 to 3.8%. Moreover, 2-APC can also exhibit aggregation-induced effect in poor solvent or solid-state, eliciting strong red fluorescence. 2-APC was also applied to cell-imaging, exhibiting good cell-permeability, biocompatibility and color rendering. This multi-mode emission of 2-APC is significant departure from that of conventional extended p-conjugated systems and ESIPT dyes based on a flat and rigid molecular design. The "one-pot synthesis" strategy for the construction of ESIPT molecules pioneered a new route to achieve tricolor-emissive fluorophores.
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Affiliation(s)
- You Qian
- College of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China; (Y.Q.); (P.M.); (H.Z.); (L.H.); (J.X.)
| | - Fuchun Gong
- College of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China; (Y.Q.); (P.M.); (H.Z.); (L.H.); (J.X.)
| | - Jiguang Li
- Crop Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China;
| | - Pan Ma
- College of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China; (Y.Q.); (P.M.); (H.Z.); (L.H.); (J.X.)
| | - Hanming Zhu
- College of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China; (Y.Q.); (P.M.); (H.Z.); (L.H.); (J.X.)
| | - Lingzhi He
- College of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China; (Y.Q.); (P.M.); (H.Z.); (L.H.); (J.X.)
| | - Jiaoyun Xia
- College of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China; (Y.Q.); (P.M.); (H.Z.); (L.H.); (J.X.)
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7
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Li Y, Wang Y, Feng X, Zhao Y. Spectroscopic and mechanistic insights into solvent mediated excited-state proton transfer and aggregation-induced emission: introduction of methyl group onto 2-( o-hydroxyphenyl)benzoxazole. Phys Chem Chem Phys 2022; 24:26297-26306. [DOI: 10.1039/d2cp03007a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
2-(2-Hydroxy-5-methylphenyl)benzoxazole(HBO-pCH3), a solvatochromic benzoxazole-based probe, exhibited a typical dual fluorescence phenomenon, high fluorescence quantum yield, red-shifted emission and large Stokes’ shift via the ESIPT in solvents.
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Affiliation(s)
- Yu Li
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yuanyue Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Xiaoqing Feng
- School of Pharmacy & School of Medicine, Changzhou University, Changzhou 213164, China
| | - Yanying Zhao
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, China
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8
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Barboza CA, Morawski O, Olas J, Gawrys P, Banasiewicz M, Suwinska K, Shova S, Kozankiewicz B, Sobolewski AL. Unravelling the ambiguity of the emission pattern of donor–acceptor salicylaldimines. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117532] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Jankowska J, Sobolewski AL. Modern Theoretical Approaches to Modeling the Excited-State Intramolecular Proton Transfer: An Overview. Molecules 2021; 26:molecules26175140. [PMID: 34500574 PMCID: PMC8434569 DOI: 10.3390/molecules26175140] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/20/2021] [Accepted: 08/23/2021] [Indexed: 02/02/2023] Open
Abstract
The excited-state intramolecular proton transfer (ESIPT) phenomenon is nowadays widely acknowledged to play a crucial role in many photobiological and photochemical processes. It is an extremely fast transformation, often taking place at sub-100 fs timescales. While its experimental characterization can be highly challenging, a rich manifold of theoretical approaches at different levels is nowadays available to support and guide experimental investigations. In this perspective, we summarize the state-of-the-art quantum-chemical methods, as well as molecular- and quantum-dynamics tools successfully applied in ESIPT process studies, focusing on a critical comparison of their specific properties.
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Affiliation(s)
- Joanna Jankowska
- Faculty of Chemistry, University of Warsaw, 02-093 Warsaw, Poland
- Correspondence:
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10
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Solis-Santos M, Ordóñez M, Ochoa-Terán A, Morales-Cueto R, Labastida-Galván V. Synthesis of phthalimides, isoindolin-1-ones and isoindolines bearing aminobenzoic acids as a new fluorescent compounds. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Jejurkar VP, Yashwantrao G, Kumar P, Neekhra S, Maliekal PJ, Badani P, Srivastava R, Saha S. Design and Development of Axially Chiral Bis(naphthofuran) Luminogens as Fluorescent Probes for Cell Imaging. Chemistry 2021; 27:5470-5482. [PMID: 33368715 DOI: 10.1002/chem.202004942] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Indexed: 11/07/2022]
Abstract
Designing chiral AIEgens without aggregation-induced emission (AIE)-active molecules externally tagged to the chiral scaffold remains a long-standing challenge for the scientific community. The inherent aggregation-caused quenching phenomenon associated with the axially chiral (R)-[1,1'-binaphthalene]-2,2'-diol ((R)-BINOL) scaffold, together with its marginal Stokes shift, limits its application as a chiral AIE-active material. Here, in our effort to design chiral luminogens, we have developed a design strategy in which 2-substituted furans, when appropriately fused with the BINOL scaffold, will generate solid-state emissive materials with high thermal and photostability as well as colour-tunable properties. The excellent biocompatibility, together with the high fluorescence quantum yield and large Stokes shift, of one of the luminogens stimulated us to investigate its cell-imaging potential. The luminogen was observed to be well internalised and uniformly dispersed within the cytoplasm of MDA-MB-231 cancer cells, showing high fluorescence intensity.
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Affiliation(s)
- Valmik P Jejurkar
- Department of Speciality Chemicals Technology, Institute of Chemical Technology (ICT), Mumbai, 400019, India
| | - Gauravi Yashwantrao
- Department of Speciality Chemicals Technology, Institute of Chemical Technology (ICT), Mumbai, 400019, India
| | - Pawan Kumar
- Department of Biotechnology, BIT Mesra, Ranchi, India
| | - Suditi Neekhra
- Department of Biosciences and Bioengineering, IIT Bombay, Bombay, India
| | | | - Purav Badani
- Department of Chemistry, University of Mumbai, Mumbai, India
| | - Rohit Srivastava
- Department of Biosciences and Bioengineering, IIT Bombay, Bombay, India
| | - Satyajit Saha
- Department of Speciality Chemicals Technology, Institute of Chemical Technology (ICT), Mumbai, 400019, India
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12
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Su X, Zhou Q, Li Y, Cao B, Li B, Zhang X, Yin H, Shi Y. Revised the excited-state intramolecular proton transfer direction of the BTHMB molecule: A theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 249:119327. [PMID: 33360566 DOI: 10.1016/j.saa.2020.119327] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 12/02/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
The spectroscopic properties of 3-(benzo[d]-thiazol-2-yl)-2-hydroxy-5-methoxy benzaldehyde molecule were investigated [J. Phys. Chem. A 2019, 123, 10246-10253]. The result shows that the excited-state intramolecular proton transfer (ESIPT) was driven toward the N center over the O center. In this research, the density functional theory and time-dependent density functional theory method were used to calculate molecule structures. Through our calculations, the ESIPT process toward N atom is proved to be feasible. Moreover, the emission peak we obtained of ESIPT process from the OH proton to aldehyde O atom is located at 564 nm, which is attributed to 500 nm in previous research. From the potential energy curves, the 0.35 kcal/mol energy barrier indicates the ESIPT process could occur when excited to S1 state from the OH proton to aldehyde O atom. In addition, the frontier molecular orbitals analysis and IR spectrum were also calculated. Finally, we revise the direction of BTHMB molecule, the two directions of ESIPT are both feasible when excited to S1 state.
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Affiliation(s)
- Xing Su
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Qiao Zhou
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - You Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Bifa Cao
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Bo Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Xin Zhang
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Hang Yin
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Ying Shi
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
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13
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Ding S, Xu A, Sun A, Xia Y, Liu Y. Substituent effect on ESIPT and hydrogen bond mechanism of N-(8-Quinolyl) salicylaldimine: A detailed theoretical exploration. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 245:118937. [PMID: 32977109 DOI: 10.1016/j.saa.2020.118937] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 08/18/2020] [Accepted: 09/07/2020] [Indexed: 06/11/2023]
Abstract
The effects of substituent on excited-state intramolecular proton transfer (ESIPT) and hydrogen bonding of N-(8-Quinolyl) salicylaldimine (QS) have been studied by theoretical calculation with DFT and TDDFT. The representative electron-withdrawing nitryl and electron-donating methoxyl were selected to analyze the effects on geometries, intramolecular hydrogen bond interaction, absorption/fluorescence spectra, and the ESIPT process. The configurations of the three molecules (QS, QS-OMe and QS-NO2) were optimized in the ground and excited states. The structure parameters, infrared spectra, hydrogen bond interactions, frontier molecular orbitals, absorption/fluorescence spectra, and potential curves have cross-validated the current results. The results show that the introduction of substituent results in a bathochromic-shift of the absorption and fluorescence spectra with large Stokes shift, and is more beneficial to the ESIPT process. The current work will be beneficial to the improvement of ESIPT properties and deepen understanding of the mechanism of ESIPT process.
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Affiliation(s)
- Sha Ding
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China; School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, China; Hunan Key Laboratory of Biomass Fiber Functional Materials, Hunan University of Technology, Zhuzhou 412007, China
| | - Aixiang Xu
- School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Aokui Sun
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
| | - Yong Xia
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China; Hunan Key Laboratory of Biomass Fiber Functional Materials, Hunan University of Technology, Zhuzhou 412007, China; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Yuejun Liu
- School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China
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14
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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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15
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Li B, Zhou Q, Sun C, Cao B, Li Y, Han J, Yin H, Shi Y. Revised excited-state intramolecular proton transfer of the 3-Aminophthalimide molecule: A TDDFT study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 239:118386. [PMID: 32447216 DOI: 10.1016/j.saa.2020.118386] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 04/17/2020] [Accepted: 04/18/2020] [Indexed: 06/11/2023]
Abstract
The spectroscopic properties of 3-Aminophthalimide (3AP) molecule were investigated [Chem. Phys. 2002, 283, 249, New J. Chem. 2018, 42, 1181]. The result was that the 3AP molecule was exhibiting excited-state intramolecular proton transfer (ESIPT). In the research, we revised previous result using time-dependent density functional theory (TDDFT) method. The fluorescence spectrum shows that the only fluorescence peak is from initial enol form, which is different from the traditional case of ESIPT. The red shift of characteristic peaks in infrared vibration spectra is not induced by ESIPT process. The change in the vibration mode of the amino group causes the red shift of characteristic peak in the infrared spectrum. Energy curves indicate that the barrier (19.71 kcal/mol) is anomalously high in the first excited state. In addition, there are not stable points to lead the ESIPT to form a keto isomer. Together, these results demonstrate that there is not an ESIPT process happening of 3AP molecule.
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Affiliation(s)
- Bo Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Qiao Zhou
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Chaofan Sun
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Bifa Cao
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - You Li
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Jianhui Han
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Hang Yin
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
| | - Ying Shi
- Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
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16
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Kediya S, Manhas A, Jha PC. DFT/TD‐DFT Based Study to Decipher the Proton Transfer Process in Anion Sensing Mechanism of NTS Molecule. ChemistrySelect 2020. [DOI: 10.1002/slct.202000550] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Siddhi Kediya
- School of Applied Material ScienceCentral University of Gujarat Gandhinagar 382030 Gujarat India
| | - Anu Manhas
- School of Chemical SciencesCentral University of Gujarat Gandhinagar 382030 Gujarat India
| | - Prakash C. Jha
- School of Applied Material ScienceCentral University of Gujarat Gandhinagar 382030 Gujarat India
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17
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Hao J, Yang Y. Unveiling the effect of solvent polarity on the excited state intramolecular proton transfer mechanism of new 3-hydroxy-4-pyridylisoquinoline compound. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 232:118082. [PMID: 32086041 DOI: 10.1016/j.saa.2020.118082] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/18/2020] [Accepted: 01/18/2020] [Indexed: 06/10/2023]
Abstract
The new 3-hydroxy-4-pyridylisoquinoline compound is attractive and promising lead structure in drug discovery. The pronounced sensitivity of its emission property toward solvent polarity effect was presented in experiment (J. Org. Chem, 2019, 84, 3011). Nevertheless, the experiment was lack of solvent polarity effect on the excited state intramolecular proton transfer (ESIPT) mechanism in detail. In this study, the ESIPT process of this molecule in different polarity solvents were comprehensively expounded by density functional theory (DFT) and time-dependent DFT (TDDFT) methods. In order to ensure the accuracy of the experiment and roundly explore in theoretical level, two ESIPT pathways (1 and 2) based on the N1 and N2 forms of studied molecule were proposed, among which the ESIPT pathway 1 was derived from experiment. The calculated electronic spectrum of both N1 and N2 forms were rather comparable with the experiment. The calculated intramolecular hydrogen bond (IHB) parameters and infrared (IR) vibration spectra determined the enhancement of IHBs at the S1 state under different solvents for both N1 and N2 forms. The frontier molecular orbitals (FMOs) analysis proved that the intramolecular charge transfer (ICT) taken place during photoexcitation. The potential energy curves (PECs) at the S0 and S1 states were constructed to illustrate the solvent polarity effect on ESIPT mechanism. According to potential energy barriers (PEBs) on the PECs at S1 state, it is concluded that the ESIPT pathway 1 was forbidden with exceedingly high PEBs (24.585-25.322 kcal/mol), while the ESIPT pathway 2 was feasible with enough low PEBs (0.100-0.510 kcal/mol), which suggested the inconsequence of the experiment. Based on the PEBs of ESIPT pathway 2 in different solvent, the effect of solvent polarity on ESIPT mechanism was depicted. The results are as follows: the S1 state IHB intensity was enhanced with increasing solvent polarity; the extent of ICT was decreased with the increment of solvent polarity; the S1 state PEB was decreased as the solvent polarity increased. Indeed in short, the ESIPT reaction became more and more likely as the solvent polarity enhanced. We believe that this investigation will be useful to the utilization and development of property for such photochemical substances.
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Affiliation(s)
- Jiaojiao Hao
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yang Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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18
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Ponnusamy K, Ramamurthy K, Chellappan S. Thermal-Induced Twisting and Photoinduced Planarization of Salicylideneaniline in Alcohols. J Phys Chem A 2020; 124:1885-1895. [PMID: 32077297 DOI: 10.1021/acs.jpca.9b09526] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Thermofluorochromism and photochromism of salicylideneaniline (SA) in alcohol were investigated using steady-state and time-resolved fluorescence and absorption spectroscopy. The planar trans-enol form of SA in alcohols is converted into the twisted trans-enol form on heating. This conversion results change in the emission maximum from the 530 to the 440 nm region with an increase in fluorescence intensity, which confirms the absence of intramolecular hydrogen bonding between imine nitrogen and phenolic hydrogen in the twisted trans-enol form. The activation barrier for thermal-induced formation of the twisted trans-enol form in methanol was determined experimentally and was found to be 20.15 ± 2.22 kcal/mol. The rotation of the phenolic C7-C8 and C7-N1 bond followed by breaking of the intramolecular hydrogen bond and formation of an intermolecular hydrogen bond with alcohol solvent molecules results in the thermally stable twisted trans-enol form in alcohol solvents. The biexponential nature of the fluorescence decay of the twisted trans-enol form of SA confirms that the emission originates from multiple (π-π* and n-π*) excited states. On photolysis under UV light, the twisted trans-enol form is converted back into the planar trans-enol form. The time-resolved absorption and excitation-resolved fluorescence spectrum of SA in methanol confirm the existence of the twisted cis-keto form as a transient photochromic intermediate in the light-induced planarization of SA in alcohols. In alcohols, an interplay between the intra- and intermolecular hydrogen-bonding controls excited-state reaction dynamics and conformational relaxation of SA, which are responsible for the photochromism of salicylideneaniline.
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Affiliation(s)
- Karunakaran Ponnusamy
- National Centre for Ultrafast Processes, University of Madras, Chennai 600 113 Tamil Nadu, India
| | - Kannan Ramamurthy
- National Centre for Ultrafast Processes, University of Madras, Chennai 600 113 Tamil Nadu, India
| | - Selvaraju Chellappan
- National Centre for Ultrafast Processes, University of Madras, Chennai 600 113 Tamil Nadu, India
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19
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Das B, Chakraborty A, Chakraborty S. Experimental and theoretical investigation of ground state intramolecular proton transfer (GSIPT) in salicylideneaniline Schiff base derivatives in polar protic medium. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 225:117443. [PMID: 31677426 DOI: 10.1016/j.saa.2019.117443] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/22/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
Ground state intramolecular proton transfer process has been comprehensively investigated in three salicylideneaniline Schiff base derivatives (SB1, SB2, and SB3) using experimental and theoretical methods. It has been confirmed that all the three Schiff base molecules in the ground electronic state exist in the enol form in non-polar and polar aprotic solvents. Keto form is being populated by the polar protic solvent through ground state intramolecular proton transfer (GSIPT) process. Ground state equilibrium between the enol and keto tautomers for SB1 and SB3 is mainly governed by the proton donating ability of the solvent. Ground state equilibria between the enol and keto tautomers of SB2 which is a positional isomer of SB3 is governed by the polarity and proton donating ability of the solvents. Excited state intramolecular proton transfer (ESIPT) process is also evidenced in all the three Schiff base molecules. Theoretical calculations at the B3LYP/cc-pVDZ level in the gas phase and in different solvents using polarisable continuum model (PCM) have failed to establish the GSIPT process. Microsolvation of individual enol and keto conformers has been investigated considering upto three solvent molecules. The energetics of the individual conformers together with the corresponding transition state have been calculated. It has been confirmed that the keto conformer is more stable compared to the enol conformer in microsolvated cluster of three methanol molecules. Lowering of activation energy for the enol to keto tautomerisation in the presence of methanol also supports the experimental observation for GSIPT process. TDDFT/B3LYP/cc-pVDZ single point calculations for microsolvated clusters of enol and keto form of the Schiff base molecules exhibit an excellent agreement with the experimentally obtained absorption spectra. Difference in spectral nature of the Schiff base molecules has been explained using natural bond orbital (NBO) analysis. Quantum theory of atoms in molecules (QTAIM) has also been utilised to understand the GSIPT process in detail.
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Affiliation(s)
- Bijoya Das
- Department of Chemistry, Birla Institute of Technology and Science, Pilani. Pilani Campus, Vidya Vihar, Pilani, Rajasthan - 333031, India
| | - Amrita Chakraborty
- Department of Chemistry, Birla Institute of Technology and Science, Pilani. Pilani Campus, Vidya Vihar, Pilani, Rajasthan - 333031, India
| | - Shamik Chakraborty
- Department of Chemistry, Birla Institute of Technology and Science, Pilani. Pilani Campus, Vidya Vihar, Pilani, Rajasthan - 333031, India.
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20
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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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21
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Mohan M, Satyanarayan M, Trivedi DR. Exploring the possibilities of double proton transfer in hydrazides: A theoretical approach. J PHYS ORG CHEM 2019. [DOI: 10.1002/poc.4003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Makesh Mohan
- Optoelectronics Laboratory, Department of PhysicsNational Institute of Technology Karnataka (NITK) Surathkal Mangalore India
| | - M.N. Satyanarayan
- Optoelectronics Laboratory, Department of PhysicsNational Institute of Technology Karnataka (NITK) Surathkal Mangalore India
| | - Darshak R. Trivedi
- Supramolecular Chemistry Laboratory, Department of ChemistryNational Institute of Technology Karnataka (NITK) Surathkal Mangalore India
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Zhang J, Zhao Z, Shang H, Liu Q, Liu F. An easy-to-synthesize multi-photoresponse smart sensor for rapidly detecting Zn2+ and quantifying Fe3+ based on the enol/keto binding mode. NEW J CHEM 2019. [DOI: 10.1039/c9nj03635k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A readily available salicylaldazine-modified fluorene Schiff base (EASA-F) exhibits fast fluorescent OFF–ON response to Zn2+ and OFF–ON–OFF behavior to Fe3+ synchronously accompanied the diverse absorption-ratiometric and colorimetric changes.
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Affiliation(s)
- Jingzhe Zhang
- School of Water Resources and Environment
- China University of Geosciences
- Beijing 100083
- China
| | - Zheng Zhao
- School of Information Engineering
- China University of Geosciences
- Beijing 100083
- China
| | - Hong Shang
- School of Science
- China University of Geosciences
- Beijing 100083
- China
| | - Qingsong Liu
- School of Water Resources and Environment
- China University of Geosciences
- Beijing 100083
- China
| | - Fei Liu
- School of Water Resources and Environment
- China University of Geosciences
- Beijing 100083
- China
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Das M, Sahu S, Krishnamoorthy G. Tweaking the proton transfer triggered proton transfer of 3,5-bis(2-hydroxyphenyl)-1H-1,2,4-triazole. Phys Chem Chem Phys 2019; 21:15669-15677. [DOI: 10.1039/c9cp02281c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Proton transfer triggered proton transfer (PTTPT) of the molecule is completely altered by dimethylformamide and the proton transfer paths are changed. The process can be reversed by silver particle.
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Affiliation(s)
- Minati Das
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | - Saugata Sahu
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
| | - G. Krishnamoorthy
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati
- India
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