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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 (författare)
- Lviv Polytech Natl Univ, Ukraine; Kaunas Univ Technol, Lithuania
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- Stanitska, Mariia (författare)
- Kaunas Univ Technol, Lithuania; Ivan Franko Natl Univ Lviv, Ukraine
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- Skhirtladze, Levani (författare)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten,Kaunas Univ Technol, Lithuania
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- Ali, Amjad (författare)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Baryshnikov, Glib (författare)
- Linköpings universitet,Laboratoriet för organisk elektronik,Tekniska fakulteten
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- Volyniuk, Dmytro (författare)
- Kaunas Univ Technol, Lithuania
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- Kutsiy, Stepan (författare)
- Lviv Polytech Natl Univ, Ukraine
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- Obushak, Mykola (författare)
- Ivan Franko Natl Univ Lviv, Ukraine
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- Cekaviciute, Monika (författare)
- Kaunas Univ Technol, Lithuania
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- Stakhira, Pavlo (författare)
- Lviv Polytech Natl Univ, Ukraine
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- Grazulevicius, Juozas Vidas (författare)
- Kaunas Univ Technol, Lithuania
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: ACS Materials Science Au. - : AMER CHEMICAL SOC. - 2694-2461.
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
Nyckelord
- microwave irradiation-assisted Buchwald-Hartwig cross-couplingreaction; benzodioxinoquinoxaline; acridine; phenoxazine; solid-state-enhanced thermally activated delayedfluorescence; room-temperature phosphorescence; organic light-emitting diode
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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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visa fler...
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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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visa färre...
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- NATURVETENSKAP
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NATURVETENSKAP
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ACS Materials Sc ...
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Linköpings universitet