Nonconjugated Hyperbranched Polyether Emitting Ultralong Room Temperature Phosphorescence with Tunable Emission and Afterglow

• DOI: 10.1021/acs.macromol.3c01088
• Publication Date: 2023-07-19T21:22:45Z
• Authors: Yongkang Zuo; Hongjun Yang; Kaojin Wang; Yiye Song; Li Jiang; Wenyan Huang; Xiaoqiang Xue; Qimin Jiang; Bibiao Jiang; Guangzhao Zhang
• Keywords: Quantum yield

Development of a nonconjugated room temperature phosphorescence (RTP) system with lifetime longer than 1 s remains challenge. Here, we report RTP polymer composed amide-terminated hyperbranched polyether cross-linked boric acid, whose can reach up to 2.40 maximum absolute quantum yield 26.5%. Moreover, their phosphorescent emission wavelength be tuned from 517 585 nm by changing the excitation 300 480 nm, while afterglow color regulated blue yellow-red. Particularly, exhibits dual stimulus response humidity and temperature, so it is expected find applications in anti-counterfeiting. The present study provides strategy design an tunable prolonged afterglow.