Journal
SCIENCE ADVANCES
Volume 8, Issue 15, Pages -Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abk2925
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Funding
- National Natural Science Foundation of China [22075149, 21772095, 62075102, 61875090, 91833306]
- Jiangsu Specially Appointed Professor Plan
- Six Talent Plan of Jiangsu Province [XCL-049]
- 1311 Talents Program of Nanjing University of Posts and Telecommunications (Dingshan)
- Natural Science Fund for Colleges and Universities in Jiangsu Province [20KJB430001]
- China Postdoctoral Science Foundation [2018 M642284]
- Nanjing University of Posts and Telecommunications Start-up Fund (NUPTSF) [NY220151, NY219007, NY217140]
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We have successfully modulated the afterglow emission color in water-soluble polymer systems through phosphorescence Forster resonance energy transfer (FRET) technique, achieving full-color afterglow emission from blue to red and even white. This study provides important guidance in developing high-performance afterglow polymers with on-demand color tuning ability for optoelectronic applications.
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 Forster 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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