Electrospinning enables flexibility of organic long-persistent luminescence crystals

• Published in: Dyes and pigments 2022-11, Vol.207, p.110734, Article 110734
• Main Authors: Wang, Tiantian, Song, Yakun, Liu, Man, Gao, Chunyuan, Yang, Hui, Wang, Lichang, Liu, Dongzhi, Wang, Tianyang, Hu, Wenping
• Format: Article
• Language: English
• Subjects: Doped-crystal; Electrospinning; Flexibility; Organic long-persistent luminescence; Room-temperature phosphorescence
• ISSN: 0143-7208; 1873-3743
• DOI: 10.1016/j.dyepig.2022.110734

Purely organic long-persistent luminescence materials (OLPLMs) have received extensive attention in recent years due to their “green” preparation process, environmental friendliness and renewable resource characteristics. As an important branch of OLPLMs research and development, organic crystalline materials exhibit excellent long-persistent luminescence (LPL) properties through a facile crystal fabrication. However, no studies have yet highlighted how to enable flexibility of crystal-based OLPLMs. Here, we utilize a host-guest doping system and water-based preparation under ambient conditions to obtain two organic doped-crystals with different LPL durations due to the minor difference in guest structure. Then, we fabricate high-quality polymer fibers containing these two crystals separately to weave the flexible thin-film by electrospinning, still exhibiting outstanding LPL performance. This work sheds light on the molecular design of host-guest doping system, and will accelerate the research and development of large-area flexible manufacturing of crystal-based OLPLMs. Utilizing a high-quality polymer fiber containing organic host-guest doping crystals to weave the flexible thin-film by electrospinning, which exhibited different afterglow times due to the minor difference in guest structure. [Display omitted] •Using a “green” water-based preparation method to obtain two organic host-guest doping crystals.•Their different afterglow times were attributed to the minor difference in guest structure.•Realizing the flexible thin-film based on both doped-crystals by electrospinning.