Molecular asymmetry and rigidification as strategies to activate and enhance thermally activated delayed fluorescence in deep-blue MR-TADF emitters

Two novel deep-blue multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a fused carbazole unit were synthesized. The carbazole contributed to the emergence of TADF in these small molecules. Particularly, organic light-emitting diodes with 1B...

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Published inPhysical chemistry chemical physics : PCCP Vol. 26; no. 32; pp. 21337 - 21341
Main Authors Weerasinghe, Rangani Wathsala, dos Santos, John Marques, Chitose, Youhei, Matulaitis, Tomas, Warriner, Stuart L, Barman, Debasish, Chan, Chin-Yiu, Tsuchiya, Youichi, Zysman-Colman, Eli, Adachi, Chihaya
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 14.08.2024
Subjects
Carbazoles
Chemical synthesis
Emitters
Fluorescence
Organic light emitting diodes
Quantum efficiency
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Abstract Two novel deep-blue multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a fused carbazole unit were synthesized. The carbazole contributed to the emergence of TADF in these small molecules. Particularly, organic light-emitting diodes with 1B-CzCrs doped in the mCP host achieve a maximum external quantum efficiency of 12.8% at CIE coordinates of (0.146, 0.062). Two novel deep-blue multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a fused carbazole unit were synthesized.
AbstractList Two novel deep-blue multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a fused carbazole unit were synthesized. The carbazole contributed to the emergence of TADF in these small molecules. Particularly, organic light-emitting diodes with 1B-CzCrs doped in the mCP host achieve a maximum external quantum efficiency of 12.8% at CIE coordinates of (0.146, 0.062).
Two novel deep-blue multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a fused carbazole unit were synthesized. The carbazole contributed to the emergence of TADF in these small molecules. Particularly, organic light-emitting diodes with 1B-CzCrs doped in the mCP host achieve a maximum external quantum efficiency of 12.8% at CIE coordinates of (0.146, 0.062).Two novel deep-blue multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a fused carbazole unit were synthesized. The carbazole contributed to the emergence of TADF in these small molecules. Particularly, organic light-emitting diodes with 1B-CzCrs doped in the mCP host achieve a maximum external quantum efficiency of 12.8% at CIE coordinates of (0.146, 0.062).
Two novel deep-blue multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a fused carbazole unit were synthesized. The carbazole contributed to the emergence of TADF in these small molecules. Particularly, organic light-emitting diodes with 1B-CzCrs doped in the mCP host achieve a maximum external quantum efficiency of 12.8% at CIE coordinates of (0.146, 0.062). Two novel deep-blue multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a fused carbazole unit were synthesized.
Author Tsuchiya, Youichi
Weerasinghe, Rangani Wathsala
Chitose, Youhei
Chan, Chin-Yiu
Zysman-Colman, Eli
Adachi, Chihaya
Warriner, Stuart L
dos Santos, John Marques
Matulaitis, Tomas
Barman, Debasish
AuthorAffiliation Center for Organic Photonics and Electronics Research (OPERA)
Center for Molecular Systems (CMS)
School of Chemistry, University of Leeds
EaStCHEM School of Chemistry
Department of Applied Chemistry
City University of Hong Kong
Graduate School of Engineering
Department of Materials Science and Engineering
Kyushu University
Tat Chee Avenue
University of St Andrews
Organic Semiconductor Centre
Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon
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Snippet Two novel deep-blue multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a fused carbazole unit were...
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SubjectTerms Carbazoles
Chemical synthesis
Emitters
Fluorescence
Organic light emitting diodes
Quantum efficiency
Title Molecular asymmetry and rigidification as strategies to activate and enhance thermally activated delayed fluorescence in deep-blue MR-TADF emitters
URI https://www.ncbi.nlm.nih.gov/pubmed/39102008
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