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首页> 外文期刊>ACS applied materials & interfaces >Multi-Stimuli-Responsive Fluorescence Switching from a Pyridine-Functionalized Tetraphenylethene AIEgen
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Multi-Stimuli-Responsive Fluorescence Switching from a Pyridine-Functionalized Tetraphenylethene AIEgen

机译：来自吡啶官能化四苯基乙烯AIEGen的多刺激响应荧光切换

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摘要

The discovery of the striking aggregation-induced emission (AIE) phenomenon has opened a new avenue for smart light-emitting materials. Herein, a new AIE luminogen (AIEgen), 1,1,2,2-tetrakis(4-((E)-2-(pyridin-2-yl)vinyl)phenyl)ethene (TP2VPE), has been designed and synthesized by introducing the vinylpyridine motifs into the tetraphenylethene backbone. The emission spectrum of the new obtained AIEgen crystalline material can be switched in response to not only mechanical grinding and hydrostatic compression but also the protonation effect with excellent reversibility and reproducibility. Single-crystal X-ray structural analysis disclosed the supramolecular porous channel structure, which provides a shrinkable volume to maintain the fluorescence emission upon high pressure. Furthermore, protonation-deprotonation of the pyridine moieties in TP2VPE has a significant effect on the frontier molecular orbitals as well as very distinctive emission characteristics upon acid and base stimuli. The dual-response performance and the ease of its preparation and renewal endow the material with potential applications in pressure and acid/alkali fluorescence sensing.
机译：发现引人注目的聚集诱导的排放（AIE）现象已开辟了智能发光材料的新途径。在此，已经设计和合成了新的AIE Luminogen（AieGen），1,1,2,2-四（4-（（E）-2-（吡啶-2-基）乙烯基）苯基）乙烯（TP2VPE）通过将乙烯基吡啶基序引入四苯基乙烯骨架中。新的获得的Aiegen结晶材料的发射光谱可以响应于机械研磨和静液压压缩而转换，而且具有优异的可逆性和再现性的质子化效果。单晶X射线结构分析公开了超分子多孔通道结构，其提供可收缩体积以在高压下维持荧光发射。此外，TP2VPE中吡啶部分对吡啶部分的质子化 - 对前部分子轨道的显着影响以及酸和基础刺激的非常明显的排放特性。双响应性能和其准备和更新的易于赋予压力和酸/碱荧光感测具有潜在应用的材料。

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