A general supramolecular strategy for fabricating full-color-tunable thermally activated delayed fluorescence materials

Nan Xue, He-Ye Zhou, Ying Han, Meng Li, Hai-Yan Lu () and Chuan-Feng Chen ()
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Nan Xue: University of Chinese Academy of Sciences
He-Ye Zhou: Chinese Academy of Sciences
Ying Han: Chinese Academy of Sciences
Meng Li: University of Chinese Academy of Sciences
Hai-Yan Lu: University of Chinese Academy of Sciences
Chuan-Feng Chen: University of Chinese Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Developing a facile and feasible strategy to fabricate thermally activated delayed fluorescence materials exhibiting full-color tunability remains an appealing yet challenging task. In this work, a general supramolecular strategy for fabricating thermally activated delayed fluorescence materials is proposed. Consequently, a series of host–guest cocrystals are prepared by electron-donating calix[3]acridan and various electron-withdrawing guests. Owing to the through-space charge transfer mediated by multiple noncovalent interactions, these cocrystals all display efficient thermally activated delayed fluorescence. Especially, by delicately modulating the electron-withdrawing ability of the guest molecules, the emission colors of these cocrystals can be continuously tuned from blue (440 nm) to red (610 nm). Meanwhile, high photoluminescence quantum yields of up to 87% is achieved. This research not only provides an alternative and general strategy for the fabrication of thermally activated delayed fluorescence materials, but also establishes a reliable supramolecular protocol toward the design of advanced luminescent materials.

Date: 2024
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DOI: 10.1038/s41467-024-45717-x

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