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Efficient Microwave...
Efficient Microwave Irradiation-Assisted Synthesis of Benzodioxinoquinoxaline and Its Donor-Variegated Derivatives Enabling Long-Lived Emission and Efficient Bipolar Charge Carrier Transport
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- Deva, Liliia (author)
- Lviv Polytech Natl Univ, Ukraine; Kaunas Univ Technol, Lithuania
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- Stanitska, Mariia (author)
- Kaunas Univ Technol, Lithuania; Ivan Franko Natl Univ Lviv, Ukraine
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- Skhirtladze, Levani (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten,Kaunas Univ Technol, Lithuania
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- Ali, Amjad (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Baryshnikov, Glib (author)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Volyniuk, Dmytro (author)
- Kaunas Univ Technol, Lithuania
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- Kutsiy, Stepan (author)
- Lviv Polytech Natl Univ, Ukraine
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- Obushak, Mykola (author)
- Ivan Franko Natl Univ Lviv, Ukraine
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- Cekaviciute, Monika (author)
- Kaunas Univ Technol, Lithuania
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- Stakhira, Pavlo (author)
- Lviv Polytech Natl Univ, Ukraine
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- Grazulevicius, Juozas Vidas (author)
- Kaunas Univ Technol, Lithuania
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: ACS Materials Science Au. - : AMER CHEMICAL SOC. - 2694-2461.
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- To enhance the usually low-charge carrier mobilities of highly twisted donor-acceptor-type compounds that exhibit thermally activated delayed fluorescence, we designed a rodlike acceptor benzodioxinoquinoxaline. This acceptor and two donor-acceptor-donor derivatives were synthesized via microwave Buchwald-Hartwig cross-coupling reactions with yields of up to 91%. The compounds exhibit three different types of photoluminescence, which is well-explained by quantum chemical calculations. Benzodioxinoquinoxaline shows blue fluorescence, with a very short lifetime of 0.64 ns. Its derivatives exhibit either green solid-state-enhanced thermally activated delayed fluorescence (SSE-TADF) or room-temperature phosphorescence (RTP) with lifetimes approaching 7 ms. When molecularly dispersed in a polymeric host, the compounds show a photoluminescence quantum yield close to 60%. The derivatives containing acridine or phenoxazine moieties exhibit bipolar charge transport. At an electric field of 5.8 x 105 V/cm, hole and electron mobilities of the phenoxazine-containing compound reach 3.2 x 10-4 and 1.5 x 10-4 cm2 V-1 s-1, respectively. Among the studied SSE-TADF-based organic light-emitting diodes, the device containing this compound shows the highest external quantum efficiency of 12.3% due to the good charge-transporting and SSE-TADF parameters of the emitter.
Subject headings
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
Keyword
- microwave irradiation-assisted Buchwald-Hartwig cross-couplingreaction; benzodioxinoquinoxaline; acridine; phenoxazine; solid-state-enhanced thermally activated delayedfluorescence; room-temperature phosphorescence; organic light-emitting diode
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Deva, Liliia
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Stanitska, Marii ...
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Skhirtladze, Lev ...
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Ali, Amjad
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Baryshnikov, Gli ...
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Volyniuk, Dmytro
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show more...
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Kutsiy, Stepan
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Obushak, Mykola
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Cekaviciute, Mon ...
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Stakhira, Pavlo
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Grazulevicius, J ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Organic Chemistr ...
- Articles in the publication
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ACS Materials Sc ...
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Linköping University