Color-tunable ultralong organic room temperature phosphorescence from a multicomponent copolymer

作者：Long Gu, Hongwei Wu, Huili Ma, Wenpeng Ye, Wenyong Jia, He Wang, Hongzhong Chen, Nan Zhang, Dongdong Wang, Cheng Qian, Zhongfu An, Wei Huang, Yanli Zhao · 发表于：Nature Communications · 年份：2020 · DOI：10.1038/s41467-020-14792-1 · 被引用次数：474 · 研究领域：Luminescence and Fluorescent Materials、Organic Light-Emitting Diodes Research、Molecular Sensors and Ion Detection

Functional materials displaying tunable emission and long-lived luminescence have recently emerged as a powerful tool for applications in information encryption, organic electronics and bioelectronics. Herein, we present a design strategy to achieve color-tunable ultralong organic room temperature phosphorescence (UOP) in polymers through radical multicomponent cross-linked copolymerization. Our experiments reveal that by changing the excitation wavelength from 254 to 370 nm, these polymers display multicolor luminescence spanning from blue to yellow with a long-lived lifetime of 1.2 s and a maximum phosphorescence quantum yield of 37.5% under ambient conditions. Moreover, we explore the application of these polymers in multilevel information encryption based on the color-tunable UOP property. This strategy paves the way for the development of multicolor bio-labels and smart luminescent materials with long-lived emission at room temperature.