可调节的热激活延迟光和室温光发射,由宿主-客人兴奋剂和替代电子效应驱动的白色和红色长光后发射
Shuaibin Mao1, Yupeng Zhao2, Yuchen Hong1
1College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
ACS applied materials & interfaces
|October 11, 2025
概括
研究人员开发了新型的长光后发光材料,表现出热激活延迟光 (TADF) 和室温光 (RTP). 这些材料可以在防伪和加密方面的应用中实现延长后照持续时间.
科学领域:
- 材料科学 材料科学 材料科学
- 光物理学的光学物理学
- 有机化学 有机化学
背景情况:
- 长光后光材料对于动态光后效应和理解光机制至关重要.
- 热激活延迟光 (TADF) 和室温光 (RTP) 是关键的排放现象.
研究的目的:
- 为高效的TADF和RTP设计和合成新型主机和客户材料.
- 为了研究电子置换效应对发光特性的影响.
- 探索主机-客户和三元兴奋剂系统,以长期使用后光应用.
主要方法:
- 合成六种主体和客体材料,具有不同的电子替代.
- 主机-客户和三元兴奋剂系统的构建和描述.
- 用于三元系统的Förster共振能量转移 (FRET).
- 采用了晶体分析和理论计算来阐明机制.
主要成果:
- 主机-客户系统表现出度和主机依赖的TADF和RTP.
- 使用电子捐赠替代剂,最长的RTP寿命达到了1270毫秒,光后持续时间为11秒.
- 三星系统实现了长寿的红色和白色后照 (6秒和11秒).
- 在PMMA中,TADF和RTP的寿命达到514毫秒和843毫秒,量子产量为0.17,0.10和0.22.
结论:
- 实现了长寿命的红色,白色和动态后照,具有防伪和加密的潜力.
- 通过实验和理论研究揭示了TADF和RTP的内部机制.
- 对视觉温度检测,照明和信息加密有显著的影响.
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