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Han P, Xia E, Qin A, Tang BZ. Adjustable and smart AIEgens for nondoped blue and deep blue organic light-emitting diodes. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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2
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Fedotov VV, Valieva MI, Taniya OS, Aminov SV, Kharitonov MA, Novikov AS, Kopchuk DS, Slepukhin PA, Zyryanov GV, Ulomsky EN, Rusinov VL, Charushin VN. 4-(Aryl)-Benzo[4,5]imidazo[1,2- a]pyrimidine-3-Carbonitrile-Based Fluorophores: Povarov Reaction-Based Synthesis, Photophysical Studies, and DFT Calculations. Molecules 2022; 27:8029. [PMID: 36432130 PMCID: PMC9698514 DOI: 10.3390/molecules27228029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 11/22/2022] Open
Abstract
A series of novel 4-(aryl)-benzo[4,5]imidazo[1,2-a]pyrimidine-3-carbonitriles were obtained through the Povarov (aza-Diels-Alder) and oxidation reactions, starting from benzimidazole-2-arylimines. Based on the literature data and X-ray diffraction analysis, it was discovered that during the Povarov reaction, [1,3] sigmatropic rearrangement leading to dihydrobenzimidazo[1,2-a]pyrimidines took place. The structures of all the obtained compounds were confirmed based on the data from 1H- and 13C-NMR spectroscopy, IR spectroscopy, and elemental analysis. For all the obtained compounds, their photophysical properties were studied. In all the cases, a positive emission solvatochromism with Stokes shifts from 120 to 180 nm was recorded. Aggregation-Induced Emission (AIE) has been illustrated for compound 6c using different water fractions (fw) in THF. The compounds 6c and 6f demonstrated changes in emission maxima or/and intensities after mechanical stimulation.
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Affiliation(s)
- Victor V. Fedotov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Maria I. Valieva
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Olga S. Taniya
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Semen V. Aminov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Mikhail A. Kharitonov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Alexander S. Novikov
- Institute of Chemistry, Saint Petersburg State University, 7/9 Universitetskaya Nab., 199034 Saint Petersburg, Russia
| | - Dmitry S. Kopchuk
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Pavel A. Slepukhin
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Grigory V. Zyryanov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Evgeny N. Ulomsky
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Vladimir L. Rusinov
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
| | - Valery N. Charushin
- Chemical Engineering Institute, Ural Federal University, 19 Mira St., 620002 Yekaterinburg, Russia
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Thanikachalam V, Karunakaran U, Jayabharathi J, Anudeebhana J, Thilagavathy S. Aggregation induced emission and mechanochromism: Multi stimuli responsive fluorescence switching of assistant acceptor modulated phenanthroimidazoles. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113852] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Jayabharathi J, Thanikachalam V, Karunakaran U, Anudeebhana J, Thilagavathy S. Mechanoluminescence and Aggregation-Induced Emission in Bipolar Phenanthroimidazoles: Role of Positional Isomerization-Induced Switching Effect. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jayaraman Jayabharathi
- Department of Chemistry, Annamalai University, Annamalai Nagar, Chidambaram 608002, Tamilnadu, India
| | - Venugopal Thanikachalam
- Department of Chemistry, Annamalai University, Annamalai Nagar, Chidambaram 608002, Tamilnadu, India
| | - Uthirapathy Karunakaran
- Department of Chemistry, Annamalai University, Annamalai Nagar, Chidambaram 608002, Tamilnadu, India
| | | | - Shanmugam Thilagavathy
- Department of Chemistry, Annamalai University, Annamalai Nagar, Chidambaram 608002, Tamilnadu, India
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Phenanthroimidazole substituted imidazo[1,2-a]pyridine derivatives for deep-blue electroluminescence with CIEy ∼ 0.08. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113600] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Dixit SJN, Gupta C, Tadavi TH, Chandrakumar KRS, Bose S, Agarwal N. Phenanthroimidazole derivatives showing mild intramolecular charge transfer and high quantum yields and their applications in OLEDs. NEW J CHEM 2021. [DOI: 10.1039/d1nj02134f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Phenanthroimidazole derivatives showing bipolar characters, strong emissions in the blue region and their applications in OLED is presented.
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Affiliation(s)
- Swati J. N. Dixit
- School of Chemical Sciences, UM-DAE, Centre for Excellence in Basic Sciences, University of Mumbai, Kalina campus, Santacruz (E), Mumbai 400098, India
| | - Chandan Gupta
- School of Physical Sciences, UM-DAE, Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Santacruz (E), Mumbai 400098, India
| | - Tanveer Habib Tadavi
- School of Chemical Sciences, UM-DAE, Centre for Excellence in Basic Sciences, University of Mumbai, Kalina campus, Santacruz (E), Mumbai 400098, India
| | - K. R. S. Chandrakumar
- Theoretical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, India
| | - Sangita Bose
- School of Physical Sciences, UM-DAE, Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Santacruz (E), Mumbai 400098, India
| | - Neeraj Agarwal
- School of Chemical Sciences, UM-DAE, Centre for Excellence in Basic Sciences, University of Mumbai, Kalina campus, Santacruz (E), Mumbai 400098, India
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Liu XJ, Gao GL, Jiang H, Jia YR, Xia M. Deep insight into reasons for the mechanoluminescence phenomenon of triphenylamine-substituted imidazoles and their distinct mechano-fluorochromic behaviours. RSC Adv 2020; 10:23187-23195. [PMID: 35693132 PMCID: PMC9122572 DOI: 10.1039/d0ra02737e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 05/29/2020] [Indexed: 01/31/2023] Open
Abstract
Three imidazoles with different numbers of fused aromatic rings have been prepared by the respective introduction of triphenylamine and 4-cyanophenyl at the N1 and C2 positions in the imidazole ring. Each imidazole effectively exhibits positive solvatochromism, and that of benzo[d]imidazole is the most significant. Although these imidazole crystals have centrosymmetric space groups, they are all ML-active. It was verified by DFT calculations based on X-ray crystallography that some molecular couples with strong intermolecular interactions possess large net dipole moments that should be dominantly responsible for the ML behaviours of these crystals. Moreover, the considerably high molecular dipole moments of the three imidazoles also make a great contribution to good ML effects. Based on this triphenylamine-substituted imidazole system, the relationships among space groups, molecular dipole moments, polar molecular couples and the ML phenomenon are made clear for the first time. Unlike the remarkable MFC activities on imidazole and benzo[d]midazole crystals, phenanthro[9,10-d]imidazole is MFC-inert, and this may well be attributed to strong intramolecular C-H⋯π interactions, which make the rotation of triphenylamine nearly impossible under force stimuli.
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Affiliation(s)
- Xiao-Jing Liu
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Guan-Lei Gao
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Hao Jiang
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Yan-Rong Jia
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Min Xia
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
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Nikookar H, Rashidi-Ranjbar P. A photoluminescent molecular host with aggregation-induced emission enhancement, multi-stimuli responsive properties and tunable photoluminescence host-guest interaction in the solid state. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112106] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Jiang H, Liu XJ, Jia RR, Xu TH, Xia M. Side chain effects on the solid-state emission behaviours and mechano-fluorochromic activities of 10 H-phenothiazinylbenzo[ d]imidazoles. RSC Adv 2019; 9:30381-30388. [PMID: 35530236 PMCID: PMC9072131 DOI: 10.1039/c9ra05255k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 09/06/2019] [Indexed: 11/30/2022] Open
Abstract
A family of 4-cyanophenyl-substituted 10H-phenothiazinylbenzo[d]imidazoles with different side chains at the 10-position are prepared and their physical properties are studied. The detailed structure-property research demonstrates that the cold crystallization temperature of ground samples and the emission wavelengths of pristine samples are in good accordance with the packing density, conformation distortion and intermolecular interactions, but emission wavelengths of ground samples are slightly chain-dependent. For benzimidazoles with alkyl chains, longer and more branched chains can produce looser packings, which cause pristine samples to display red-shifted emission and reduced MFC activity. For benzimidazoles with a phenyl chain, the emission wavelengths of both the pristine and the ground samples are remarkably red-shifted. Moreover, the degree of conformation distortion is larger, and the cold crystallization temperature is higher. Interestingly, the homologue with the n-hexyl chain displays an intense ML effect that is mainly attributed to the heavy discharge quantity on largely enhanced discharge areas under force stimuli due to the great fragility of this crystal. The solid-state emission behaviours and MFC performances of 10H-phenothiazinylbenzo[d]imidazoles with different side chains are investigated.![]()
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Affiliation(s)
- Hao Jiang
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Xiao-Jing Liu
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Ran-Rong Jia
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Tian-Hui Xu
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
| | - Min Xia
- Department of Chemistry, Zhejiang Sci-Tech University Hangzhou 310018 P. R. China
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