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一/两光子激发ESIPT归因的协调聚合物具有广泛的温度范围和可调色的长时间持久发光

Peng-Yan Fu¹, Shao-Zhe Yi¹, Zhong-Hao Wang¹

¹MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510006, China.

Angewandte Chemie (International ed. in English)

|July 24, 2023

概括

激发状态内分子质子转移 (ESIPT) 分子使可调节的长持续发光 (LPL) 成为可能. 一种新的协调聚合物 (LIFM-106) 在广泛的温度范围和色谱中展示了高效的1/2光子激发的LPL.

科学领域:

材料科学材料科学材料科学
摄影化学的使用.
超分子化学超分子化学

背景情况:

激发状态内分子质子转移 (ESIPT) 分子为温度依赖和可调色长持续发光 (LPL) 提供关键的转移稳定状态.
D-π-A结构非常适合调节ESIPT分子,以实现同时实现1和2光子激发和LPL发射.

研究的目的:

设计和合成一个动态协调聚合物,使用ESIPT连接体进行一次/两次光子同步激发,并可调整的LPL.
为了研究连接体聚合,激发状态动态和LPL特性之间的关系.
探索开发的材料在防伪系统中的潜在应用.

主要方法:

从ESIPT连接体中合理设计和合成一个 (II) 协调聚合物 (LIFM-106).
对LIFM-106与相关材料进行比较分析,以了解结构与属性之间的关系.
谱学研究,包括暂时吸收,以阐明多通道辐射过程.
理论计算以支持实验发现.

主要成果:

LIFM-106表现出优异的1和2光子激发的LPL性能.
该材料显示了广泛的操作温度范围 (100380 K) 和可调节的发射颜色,从绿色到红色.
确定了单片排放和三片LPL排放之间的温度调节的竞争关系,其中联体聚合优化了三片LPL.

结论:

开发的动态协调聚合物LIFM-106有效地实现了温度依赖且可调色的1/2光子激发LPL.
干聚合在增强所需的LPL排放中起着至关重要的作用.
这种材料对先进的应用有很大的希望,特别是在防伪技术中.

关键词:

激发状态的分子内质子转移.长时间持久的发光光.金属有机协调聚合物超分子化学超分子化学两个光子激发激发.

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