Thermally activated delayed fluorescence in dibenzothiophene sulfone derivatives: Theory and experiment
[Display omitted] •The photophysical properties of dyes are calculated.•The reversed intersystem crossing rate constant is obtained.•The OLEDs are fabricated. The photophysical properties are calculated for the dibenzothiophene sulfone substituted with various electron donor moieties:3,7-bis[N,N-di(...
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| Published in: | Chemical physics letters Vol. 717; pp. 53 - 58 |
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| Main Authors: | , , , , , , , , |
| Format: | Journal Article |
| Language: | English |
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Elsevier B.V
16-02-2019
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| Abstract | [Display omitted]
•The photophysical properties of dyes are calculated.•The reversed intersystem crossing rate constant is obtained.•The OLEDs are fabricated.
The photophysical properties are calculated for the dibenzothiophene sulfone substituted with various electron donor moieties:3,7-bis[N,N-di(4-tert-butylphenyl)amino]dibenzothiophene-S,S-dioxide (1L), 2,8-bis[N,N-di(4-tert-butylphenyl)amino]dibenzothiophene-S,S-dioxide (1A), and 2,8-bis[N,N-di(4 methoxyphenyl)amino]dibenzothiophene-S,S-dioxide (2A). It is shown that the linear arrangement of the electron donor substituents relative to the dibenzothiophene sulfone acceptor turns compound (1L) an efficient prompt fluorescent emitter, while the angular arrangement of the substituents decreases the efficiency of prompt fluorescence, but increases the efficiency of thermally activated delayed fluorescence (TADF). Replacing the auxiliary tert-butyl groups in the donor moieties by methoxy groups leads to an increase in kISC and kRISC. OLEDs are made with the studied compounds. |
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| AbstractList | [Display omitted]
•The photophysical properties of dyes are calculated.•The reversed intersystem crossing rate constant is obtained.•The OLEDs are fabricated.
The photophysical properties are calculated for the dibenzothiophene sulfone substituted with various electron donor moieties:3,7-bis[N,N-di(4-tert-butylphenyl)amino]dibenzothiophene-S,S-dioxide (1L), 2,8-bis[N,N-di(4-tert-butylphenyl)amino]dibenzothiophene-S,S-dioxide (1A), and 2,8-bis[N,N-di(4 methoxyphenyl)amino]dibenzothiophene-S,S-dioxide (2A). It is shown that the linear arrangement of the electron donor substituents relative to the dibenzothiophene sulfone acceptor turns compound (1L) an efficient prompt fluorescent emitter, while the angular arrangement of the substituents decreases the efficiency of prompt fluorescence, but increases the efficiency of thermally activated delayed fluorescence (TADF). Replacing the auxiliary tert-butyl groups in the donor moieties by methoxy groups leads to an increase in kISC and kRISC. OLEDs are made with the studied compounds. |
| Author | Krasnikova, S.S. Kopylova, T.N. Valiev, R.R. Degtyarenko, K.M. Izmailova, N.V. Yakushchenko, I.K. Gadirov, R.M. Samsonova, L.G. Odod, A.V. |
| Author_xml | – sequence: 1 givenname: R.M. orcidid: 0000-0003-3953-3384 surname: Gadirov fullname: Gadirov, R.M. organization: Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia – sequence: 2 givenname: R.R. orcidid: 0000-0002-2088-2608 surname: Valiev fullname: Valiev, R.R. organization: Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia – sequence: 3 givenname: L.G. surname: Samsonova fullname: Samsonova, L.G. organization: Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia – sequence: 4 givenname: K.M. surname: Degtyarenko fullname: Degtyarenko, K.M. organization: Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia – sequence: 5 givenname: N.V. surname: Izmailova fullname: Izmailova, N.V. organization: Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia – sequence: 6 givenname: A.V. surname: Odod fullname: Odod, A.V. organization: Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia – sequence: 7 givenname: S.S. surname: Krasnikova fullname: Krasnikova, S.S. organization: Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka 142432, Russia – sequence: 8 givenname: I.K. surname: Yakushchenko fullname: Yakushchenko, I.K. organization: Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1, Chernogolovka 142432, Russia – sequence: 9 givenname: T.N. surname: Kopylova fullname: Kopylova, T.N. organization: Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia |
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| Keywords | Thermally activated delayed fluorescence Spin-orbit coupling Intersystem crossing Organic light emitting device Transition electroluminescence |
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•The photophysical properties of dyes are calculated.•The reversed intersystem crossing rate constant is obtained.•The OLEDs are fabricated.... |
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| SubjectTerms | Intersystem crossing Organic light emitting device Spin-orbit coupling Thermally activated delayed fluorescence Transition electroluminescence |
| Title | Thermally activated delayed fluorescence in dibenzothiophene sulfone derivatives: Theory and experiment |
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