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. 2021 May 25;60(22):12335-12340.
doi: 10.1002/anie.202101994. Epub 2021 Apr 26.

Force-Induced Turn-On Persistent Room-Temperature Phosphorescence in Purely Organic Luminogen

Jia Ren  1 , Yunsheng Wang  1 , Yu Tian  1 , Zhenjiang Liu  1 , Xiangheng Xiao  2 , Jie Yang  1 , Manman Fang  1 , Zhen Li  1   3   4   5
Affiliations

Force-Induced Turn-On Persistent Room-Temperature Phosphorescence in Purely Organic Luminogen

Jia Ren et al. Angew Chem Int Ed Engl. .

Abstract

Research of purely organic room-temperature phosphorescence (RTP) materials has been a hot topic, especially for those with stimulus response character. Herein, an abnormal stimulus-responsive RTP effect is reported, in which, purely organic luminogen of Czs-ph-3F shows turn-on persistent phosphorescence under grinding. Careful analyses of experimental results, coupled with the theoretical calculations, show that the transition of molecular conformation from quasi-axial to quasi-equatorial of the phenothiazine group should be mainly responsible for this exciting result. Furthermore, the applications of stylus printing and thermal printing are both successfully realized, based on the unique RTP effect of Czs-ph-3F.

Keywords: conformers; phenothiazine; phosphorescence; stimulus response.

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