Full-color programmable high temperature afterglow polymers based on single-molecule emitters

Zhuoran Xu, Yufeng Huang, Siyu Sun (), Liangwei Ma, Bingbing Ding, He Tian and Xiang Ma ()
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Zhuoran Xu: East China University of Science and Technology
Yufeng Huang: East China University of Science and Technology
Siyu Sun: East China University of Science and Technology
Liangwei Ma: East China University of Science and Technology
Bingbing Ding: East China University of Science and Technology
He Tian: East China University of Science and Technology
Xiang Ma: East China University of Science and Technology

Nature Communications, 2025, vol. 16, issue 1, 1-8

Abstract: Abstract High-temperature afterglow organic amorphous materials expand the operational temperature beyond traditional room-temperature phosphorescent materials, broadening their potential applications. However, achieving tunable high-temperature afterglow from a single luminescent molecule remains a formidable challenge. Here, we employ host-guest anchoring coupled with single-bond rotors to achieve effective phosphorescence and tunable afterglow at high temperature simultaneously. The material demonstrates a wavelength-tunable afterglow: during heating (298 K to 473 K), the chromaticity coordinate shifts from (0.24, 0.47) to (0.18, 0.20) and the lifetime from 836 ms to 6.34 ms. The theoretical investigations reveal that the excited-state conformation of phosphors undergoes a temperature-dependent transformation, inducing the wavelength-tunable high-temperature afterglow phenomenon. This work offers a strategy for designing tunable high-temperature afterglow-emitting amorphous polymers, advancing the development of organic phosphorescent materials capable of delivering tunable high-temperature afterglow emissions.

Date: 2025
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DOI: 10.1038/s41467-025-64677-4

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