The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Regulation of Thermally Activated Delayed Fluorescence to Room‐Temperature Phosphorescent Emission Channels by Controlling the Excited‐States Dynamics via J‐ and H‐Aggregation
Abstract
Control of excited‐state dynamics is key in tuning room‐temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) emissions but is challenging for organic luminescent materials (OLMs). We show the regulation of TADF and RTP emissions of a boron difluoride β‐acetylnaphthalene chelate (β CBF 2) by controlling the excited‐state dynamics via its J‐ and H‐aggregation states. Two crystalline polymorphs emitting green and red light have been controllably obtained. Although both monoclinic, the green and red crystals are dominated by J‐ and H‐aggregation, respectively, owing to different molecular packing arrangements. J‐aggregation significantly reduces the energy gap between the lowest singlet and triplet excited states for ultra‐fast reverse intersystem crossing (RISC) and enhances the radiative singlet decay, together leading to TADF. The H‐aggregation accelerates the ISC and suppresses the radiative singlet decay, helping to stabilize the triplet exciton for RTP.
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Recent advances in organic thermally activated delayed fluorescence materials
Yang, Z., Mao, Z., Xie, Z., Zhang, Y., Liu, S., Zhao, J., Xu, J., Chi, Z., & Aldred, M. P. (2017) · Chemical Society Reviews · doi:10.1039/c6cs00368k · Cited by 2,395
Cited by
Nie, H., Wei, Z., Ni, X.-L., & Liu, Y. (2022) · Chemical Reviews · doi:10.1021/acs.chemrev.1c01050 · Cited by 382
Feng, X., Wang, X., Redshaw, C., & Tang, B. Z. (2023) · Chemical Society Reviews · doi:10.1039/d3cs00251a · Cited by 382
Metadata
- Authors
- Li, S., Fu, L., Xiao, X., Geng, H., Liao, Q., Liao, Y., & Fu, H.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2021-07-07
- Volume
- 60
- Issue
- 33
- Pages
- 18059-18064
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W3165380859
- Cited by
- 230
- References
- 1
- FWCI
- 10.85
- Type
- journal article
- Language
- en
- Open access
- closed
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- Li, S., Fu, L., Xiao, X., Geng, H., Liao, Q., Liao, Y., & Fu, H. (2021). Regulation of Thermally Activated Delayed Fluorescence to Room‐Temperature Phosphorescent Emission Channels by Controlling the Excited‐States Dynamics via J‐ and H‐Aggregation. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202103192
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