从单个聚合物链中获得24小时长的余光,通过工程兼容的一多重凝聚方法
Mingyang Liu1, Jiaju Shi1, Yusheng Zhou1
1PCFM Lab, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou, 510275, China.
Angewandte Chemie (International ed. in English)
|September 25, 2025
概括
研究人员开发了新型的聚合物链,可长时间持续24小时以上的后照 (HLA). 这些由阳光激活的材料提供了延长的发射时间,即使在低温下,也可以长达10天.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 光物理学的光学物理学
背景情况:
- 持久后照 (HLA) 材料对于先进的光学应用至关重要.
- 现有的后发光聚合物往往由于短的发射时间和有限的可加工性而受到影响.
- 在环境条件下开发稳定,持久的后发光材料仍然是一个重大挑战.
研究的目的:
- 合成和特征新型聚合物链,具有前所未有的长时间持续后发光 (HLA) 排放.
- 调查负责延长后照性质的机制.
- 评估这些聚合物在实际工程应用中的潜力.
主要方法:
- 聚合物合成的一多重凝聚反应.
- 在环境条件和低温条件下,光发光和后发光特性的表征.
- 对电荷分离和重组机制的评估.
- 使用传统的聚合物技术评估材料的可加工性.
主要成果:
- 从单个聚合物链的24小时后照 (HLA) 排放的观察.
- 在环境条件下,聚合物通过电荷分离和再组合呈现超过24小时的余光.
- 在太阳光激活后,在室温下持续绿色后照超过6小时.
- 余光持续时间在-18°C下延长到10天,创下了聚合物材料的新纪录.
- 使用常规技术,可优异地加工成薄膜和纤维.
结论:
- 新型聚合物表现出异常持久的后照 (HLA) 性能,超过24小时.
- 电荷分离和重组机制使在环境条件下持续发光.
- 这些材料在柔性显示器和可穿戴电子产品中的应用非常有前途,因为它们的可加工性和长的发射时间.
- 后照的温度依赖性为特定应用提供可调节的发射持续时间.
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