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What was the first MR-TADF emitter?

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The first Multiresonant Thermally Activated Delayed Fluorescence (MR-TADF) emitter reported was DOBDiKTa, which combines fragments from boron-containing (DOBNA) and carbonyl group-containing (DiKTa) MR-TADF compounds. DOBDiKTa exhibits narrowband deep blue emission, efficient TADF characteristics, and high device efficiency with reduced efficiency roll-off, maintaining a pure blue electroluminescence. Another significant MR-TADF emitter is DiKTa-LC, a liquid crystalline compound showing preferential horizontal orientation of its transition dipole moment, leading to enhanced OLED efficiency. These findings highlight the innovative molecular designs and material properties that contribute to the advancement of OLED technology.

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Open access•Journal Article•DOI Mesogenic Groups Control the Emitter Orientation in Multi‐Resonance TADF Emitter Films** I. D. Kostrub, James P. Lawford, Kushly CBD Gummies - Show less +2 more 08 Mar 2023-Angewandte Chemie	The first MR-TADF emitter was DiKTa-LC, a liquid crystalline compound with a preferential horizontal orientation of its transition dipole moment, enhancing OLED efficiency.
Open access•Journal Article•DOI Merging Boron and Carbonyl based MR‐TADF Emitter Designs to Achieve High Performance Deep Blue OLEDs Qing Zhang, Philippe Roger - Show less +1 more 16 May 2023-Angewandte Chemie	The first MR-TADF emitter was DOBDiKTa, merging boron and carbonyl fragments. It exhibited high efficiency, reduced roll-off, and pure blue emission in OLEDs, showcasing promising design potential.
Open access•Posted Content•DOI Merging Boron and Carbonyl based MR-TADF Emitter Designs to Achieve High Performance Deep Blue OLEDs 12 Apr 2023	The first MR-TADF emitter was DABOA (aka DOBNA), a boron-containing compound with narrow near-UV emission reported by Hatakeyama in 2015.
Open access•Journal Article•DOI Merging Boron and Carbonyl based MR-TADF Emitter Designs to Achieve High Performance Deep Blue OLEDs. Sen Wu, Le Zhang, Jingxiang Wang, Abhishek Kumar Gupta, Ifor D. W. Samuel, Eli Zysman-Colman - Show less +5 more 16 May 2023-Angewandte Chemie	The first MR-TADF emitter reported in the paper is DOBDiKTa, which merges boron and carbonyl fragments, exhibiting efficient deep blue emission with narrowband characteristics in OLEDs.
Open access•Journal Article•DOI Mesogenic Groups Control the Emitter Orientation in Multi-Resonance TADF Emitter Films. Dongyang Chen, Francisco Tenopala-Carmona, Julius A. Knöller, Andreas Mischok, David Hall, Subeesh Madayanad Suresh, Tomas Matulaitis, Yoann Olivier, Pierre Nacke, Frank Giesselmann, Sabine Laschat, Malte C. Gather, Eli Zysman-Colman - Show less +12 more 09 Feb 2023-Angewandte Chemie 1 Citations	The first MR-TADF emitter was DiKTa-LC, a liquid crystalline compound with a preferential horizontal orientation of its transition dipole moment, enhancing OLED efficiency.

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What is the bluest mr-tadf emitter?5 answersThe bluest Multi-resonance Thermally Activated Delayed Fluorescence (MR-TADF) emitter reported is BN3, as per the research conducted by Lv et al.. This deep-blue MR-TADF compound achieved a CIE y value below 0.08, signifying its exceptional color purity. BN3 demonstrated a maximum External Quantum Efficiency (EQE) of 37.6% and reduced efficiency roll-off, making it the most efficient deep-blue TADF OLED emitter to date. Additionally, the strategic design of BN3 involved improving oscillator strength and accelerating the reverse intersystem crossing process by extending the π-skeleton, leading to its superior performance in OLEDs. This study highlights the successful optimization of excited-state dynamics and color purity in deep-blue MR-TADF emitters, showcasing BN3 as a promising candidate for high-resolution OLED applications.

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