Pressure-induced room-temperature phosphorescence enhancement based on purely organic molecules with a folded geometry.
Pressure-induced room-temperature phosphorescence enhancement based on purely organic molecules with a folded geometry.
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基于具有折叠几何结构的纯有机分子的压力诱导室温磷光增强
DOI：
10.1039/d3sc00172e
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发表时间：
2023-03-08
期刊：
影响因子：
8.4
通讯作者：
Yang, Bing
中科院分区：
文献类型：
--
作者：
Yang, Zhiqiang;Fu, Zhiyuan;Liu, Haichao;Wu, Min;Li, Nan;Wang, Kai;Zhang, Shi-Tong;Zou, Bo;Yang, Bing
纯有机化合物的压力相关发光行为是激励响应型智能材料领域的一个重要课题。然而，相关的研究主要限于荧光性质的调查，而纯有机化合物的室温磷光（RTP）还没有被研究。在此，我们通过使用具有折叠几何结构的模型分子硒蒽（SeAN）填补了关于压力依赖性RTP的空白。我们首次在SeAN晶体中发现了一种独特的压力诱导RTP增强现象，揭示了折叠诱导自旋轨道耦合增强的内在机制.在也显示折叠几何形状的SeAN的类似物中也观察到压力诱导的RTP增强，但在这种情况下产生在纯有机RTP显示材料中非常罕见的白光发射。
The pressure-dependent luminescence behavior of purely organic compounds is an important topic in the field of stimulus-responsive smart materials. However, the relevant studies are mainly limited to the investigation of fluorescence properties, while room-temperature phosphorescence (RTP) of purely organic compounds has not been investigated. Here, we filled in this gap regarding pressure-dependent RTP by using a model molecule selenanthrene (SeAN) with a folded geometry. For the first time to the best of our knowledge, a unique phenomenon involving pressure-induced RTP enhancement was discovered in an SeAN crystal, and an underlying mechanism involving folding-induced spin–orbit coupling enhancement was revealed. Pressure-induced RTP enhancement was also observed in an analog of SeAN also showing a folded geometry, but in this case yielded a white-light emission that is very rare in purely organic RTP-displaying materials.
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