|TITLE||Multicolor hyperafterglow from isolated fluorescence chromophores|
|AUTHOR||Xiao Zhang, Mingjian Zeng, Yewen Zhang, Chenyu Zhang, Zhisheng Gao, Fei He, Xudong Xue, Huanhuan Li, Ping Li, Gaozhan Xie, Hui Li, Xin Zhang, Ningning Guo, He Cheng, Ansheng Luo, Wei Zhao, Yizhou Zhang, Ye Tao, Runfeng Chen & Wei Huang|
High-efficiency narrowband emission is always in the central role of organic optoelectronic display applications. However, the development of organic afterglow materials with sufficient color purity and high quantum efficiency for hyperafterglow is still great challenging due to the large structural relaxation and severe non-radiative decay of triplet excitons. Here we demonstrate a simple yet efficient strategy to achieve hyperafterglow emission through sensitizing and stabilizing isolated fluorescence chromophores by integrating multi-resonance fluorescence chromophores into afterglow host in a single-component copolymer. Bright multicolor hyperafterglow with maximum photoluminescent efficiencies of 88.9%, minimum full-width at half-maximums (FWHMs) of 38 nm and ultralong lifetimes of 1.64 s under ambient conditions are achieved. With this facilely designed polymer, a large-area hyperafterglow display panel was fabricated. By virtue of narrow emission band and high luminescent efficiency, the hyperafterglow presents a significant technological advance in developing highly efficient organic afterglow materials and extends the domain to new applications.
|KEYWORDS||Polymer synthesis Polymers Synthesis and processing|