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3-arylthioimidazo[1,2-a]pyridine derivatives: A theoretical and experimental study of its photophysical properties. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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Evaluating the photoelectric performance of D-π-A dyes with different π-conjugated bridges for DSSCs. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Weng YY, Sun X, Wang LX, Liao YY, Wang CJ. Density functional methods study on the structures and spectral characteristics for pharmacophoric conformers, metabolites, and combined fragments of Erlotinib. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02087-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kałka AJ, Brela MZ, Turek AM. Unravelling the nature of a toluene-fumaronitrile complex. Phys Chem Chem Phys 2021; 23:16128-16141. [PMID: 34296231 DOI: 10.1039/d1cp01895g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this research, the occurrence and anomalous increase of an additional absorption band observed in the spectrum of fumaronitrile dissolved in toluene are explained and characterized. The formation of a stable ground-state complex between these two molecules is evidenced by both experimental and theoretical studies. TD-DFT calculations show that the presence of an unexpected signal in the absorption spectra originates from the photoinduced intermolecular charge-transfer process occurring within this system. The mechanism and the efficiency of the adduct formation were investigated using both spectral measurements (UV-Vis, IR) and quantum-mechanical calculations (DFT). The influence of the solvent polarity on the complex stability was also evaluated. Since the forces responsible for the adduct formation turn out to be of a rather weak, dispersive character, the related equilibrium stability constant is relatively low and becomes even lower with the increase in solvent polarity. Finally, the system was analyzed for the expected fluorescence emission of the resulting complex, but none was observed.
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Affiliation(s)
- Andrzej J Kałka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland.
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Electric field effects on organic photovoltaic heterojunction interfaces: The model case of pentacene/C60. COMPUT THEOR CHEM 2020. [DOI: 10.1016/j.comptc.2020.112914] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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6
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Holtrop F, Jupp AR, van Leest NP, Paradiz Dominguez M, Williams RM, Brouwer AM, de Bruin B, Ehlers AW, Slootweg JC. Photoinduced and Thermal Single-Electron Transfer to Generate Radicals from Frustrated Lewis Pairs. Chemistry 2020; 26:9005-9011. [PMID: 32259331 PMCID: PMC7496419 DOI: 10.1002/chem.202001494] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/06/2020] [Indexed: 12/17/2022]
Abstract
Archetypal phosphine/borane frustrated Lewis pairs (FLPs) are famed for their ability to activate small molecules. The mechanism is generally believed to involve two-electron processes. However, the detection of radical intermediates indicates that single-electron transfer (SET) generating frustrated radical pairs could also play an important role. These highly reactive radical species typically have significantly higher energy than the FLP, which prompted this investigation into their formation. Herein, we provide evidence that the classical phosphine/borane combinations PMes3 /B(C6 F5 )3 and PtBu3 /B(C6 F5 )3 both form an electron donor-acceptor (charge-transfer) complex that undergoes visible-light-induced SET to form the corresponding highly reactive radical-ion pairs. Subsequently, we show that by tuning the properties of the Lewis acid/base pair, the energy required for SET can be reduced to become thermally accessible.
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Affiliation(s)
- Flip Holtrop
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
| | - Andrew R Jupp
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
| | - Nicolaas P van Leest
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
| | - Maximilian Paradiz Dominguez
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
| | - René M Williams
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
| | - Albert M Brouwer
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
| | - Bas de Bruin
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
| | - Andreas W Ehlers
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
- Department of Chemistry, Science Faculty, University of Johannesburg, PO Box 254, Auckland Park, Johannesburg, South Africa
| | - J Chris Slootweg
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, PO Box 94157, 1090 GD, Amsterdam, The Netherlands
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Sosorev AY, Nuraliev MK, Feldman EV, Maslennikov DR, Borshchev OV, Skorotetcky MS, Surin NM, Kazantsev MS, Ponomarenko SA, Paraschuk DY. Impact of terminal substituents on the electronic, vibrational and optical properties of thiophene–phenylene co-oligomers. Phys Chem Chem Phys 2019; 21:11578-11588. [DOI: 10.1039/c9cp00910h] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two main factors governing the effect of terminal substituents on the properties of thiophene–phenylene co-oligomers are revealed.
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Affiliation(s)
- Andrey Yu. Sosorev
- Faculty of Physics and International Laser Center
- Lomonosov Moscow State University
- Moscow 119991
- Russia
- Institute of Spectroscopy
| | - Muzaffar K. Nuraliev
- Faculty of Physics and International Laser Center
- Lomonosov Moscow State University
- Moscow 119991
- Russia
| | - Elizaveta V. Feldman
- Faculty of Physics and International Laser Center
- Lomonosov Moscow State University
- Moscow 119991
- Russia
| | - Dmitry R. Maslennikov
- Faculty of Physics and International Laser Center
- Lomonosov Moscow State University
- Moscow 119991
- Russia
- Institute of Spectroscopy
| | - Oleg V. Borshchev
- Enikolopov Institute of Synthetic Polymeric Materials
- Russian Academy of Science
- Moscow 117393
- Russia
| | - Maxim S. Skorotetcky
- Enikolopov Institute of Synthetic Polymeric Materials
- Russian Academy of Science
- Moscow 117393
- Russia
| | - Nikolay M. Surin
- Enikolopov Institute of Synthetic Polymeric Materials
- Russian Academy of Science
- Moscow 117393
- Russia
| | - Maxim S. Kazantsev
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry
- Novosibirsk 630090
- Russia
- Novosibirsk State University
- Novosibirsk 630090
| | - Sergei A. Ponomarenko
- Enikolopov Institute of Synthetic Polymeric Materials
- Russian Academy of Science
- Moscow 117393
- Russia
- Department of Chemistry
| | - Dmitry Yu. Paraschuk
- Faculty of Physics and International Laser Center
- Lomonosov Moscow State University
- Moscow 119991
- Russia
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