Completely aqueous processable stimulus responsive organic room temperature phosphorescence materials with tunable afterglow color

Dan Li, Yujie Yang, Jie Yang (), Manman Fang, Ben Zhong Tang () and Zhen Li ()
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Dan Li: Tianjin University
Yujie Yang: Tianjin University
Jie Yang: Tianjin University
Manman Fang: Tianjin University
Ben Zhong Tang: Tianjin University
Zhen Li: Tianjin University

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract Many luminescent stimuli responsive materials are based on fluorescence emission, while stimuli-responsive room temperature phosphorescent materials are less explored. Here, we show a kind of stimulus-responsive room temperature phosphorescence materials by the covalent linkage of phosphorescent chromophore of arylboronic acid and polymer matrix of poly(vinylalcohol). Attributed to the rigid environment offered from hydrogen bond and B-O covalent bond between arylboronic acid and poly(vinylalcohol), the yielded polymer film exhibits ultralong room temperature phosphorescence with lifetime of 2.43 s and phosphorescence quantum yield of 7.51%. Interestingly, the RTP property of this film is sensitive to the water and heat stimuli, because water could destroy the hydrogen bonds between adjacent poly(vinylalcohol) polymers, then changing the rigidity of this system. Furthermore, by introducing another two fluorescent dyes to this system, the color of afterglow with stimulus response effect could be adjusted from blue to green to orange through triplet-to-singlet Förster-resonance energy-transfer. Finally, due to the water/heat-sensitive, multicolor and completely aqueous processable feature for these three afterglow hybrids, they are successfully applied in multifunctional ink for anti-counterfeit, screen printing and fingerprint record.

Date: 2022
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DOI: 10.1038/s41467-022-28011-6

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