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Updated: Jul 6, 2025
08:51
Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
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Recent progress in multi-resonance thermally activated delayed fluorescence emitters with an efficient reverse
Xu-Feng Luo1,2, Xunwen Xiao1, You-Xuan Zheng2
1College of Material Science and Chemical Engineering, Ningbo University of Technology, Ningbo 315211, P. R. China. xunwenxiao@nbut.edu.cn.
Chemical Communications (Cambridge, England)
|January 4, 2024
Summary
Multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters offer high efficiency and narrow emission for organic light-emitting diodes (OLEDs). Strategies are explored to enhance their reverse intersystem crossing rates for improved performance.
Area of Science:
- Materials Science
- Organic Electronics
- Photophysics
Background:
- Multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters are crucial for advanced organic light-emitting diodes (OLEDs).
- These materials exhibit desirable photophysical properties like high efficiency and narrow emission spectra.
- A key challenge is the slow reverse intersystem crossing (RISC) rate, hindering optimal performance.
Purpose of the Study:
- To review recent advancements in MR-TADF emitters.
- To focus on strategies for enhancing the RISC process in MR-TADF materials.
- To analyze the structure-activity relationships governing MR-TADF performance in OLEDs.
Main Methods:
- Overview of molecular design strategies for MR-TADF materials.
- Analysis of structure-property correlations.
- Review of OLED performance metrics related to MR-TADF emitters.
Main Results:
- Various strategies like heavy-atom integration and π-conjugation extension improve RISC rates.
- Optimized molecular structures lead to enhanced optoelectronic features.
- Structure-activity relationships are established for efficient MR-TADF material design.
Conclusions:
- MR-TADF emitters with efficient RISC are vital for high-performance OLEDs.
- Understanding molecular design is key to overcoming RISC limitations.
- Future research should focus on further optimizing MR-TADF materials for narrowband emission and efficiency.
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