余辉
磷光
费斯特共振能量转移
光致发光
青色
材料科学
聚合物
荧光
光电子学
纳米技术
光化学
化学
光学
物理
伽马射线暴
复合材料
天体物理学
作者
Hao Peng,Gaozhan Xie,Yang Cao,Longyan Zhang,Xi Yan,Xiao Zhang,Shihao Miao,Ye Tao,Huanhuan Li,Chao Zheng,Wei Huang,Runfeng Chen
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2022-04-15
卷期号:8 (15)
被引量:175
标识
DOI:10.1126/sciadv.abk2925
摘要
Developing full-color organic ultralong room temperature phosphorescence (OURTP) materials with continuously variable afterglow emission is of considerable practical importance in diverse optoelectronic applications but remains a formidable challenge. Here, we present an effective strategy for on-demand engineering of afterglow color in water-soluble polymeric systems via efficient phosphorescence Förster resonance energy transfer. Using a blue afterglow emitting water-soluble polymer as host and a series of fluorescent emitters with varied emissive colors as guests, afterglow emission is rationally modulated, conferring the full-color afterglow emission ranging from blue to red and even white with ultralong lifetimes up to 4.2 s and photoluminescence quantum yields of 36%.These water-soluble multicolor-emitting polymeric afterglow systems can function as OURTP security inks, and multilevel information encryption was successfully established by RGB-based multicolor security printing. These results present important guidance in developing high-performance afterglow polymers with on-demand color tuning ability for remarkable optoelectronic applications.
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