Lanthanide luminescence materials generally show great superiority in light-emitting materials, gaining increasingly exploration in the design of advanced functional materials. Herein, we prepared a supramolecular assembly via the coordination of a host molecule (1) and dilanthanide metal. Compound 1 possesses a 9,10-diphenylanthracene (ant) core with photosensitivity and terminal terpyridine (tpy), containing two-arm dibenzo-24-crown-8. The assembly could exhibit excellent lanthanide luminescence after undergoing a photoreaction from anthracene unit in 1. Significantly, the luminescence of the assembly could be reversibly switched on and off through a regulable photoreaction upon light irradiation or heating. The multiple functional behavior combined with the ease of assembly reveals that this photo/thermo-controlled lanthanide luminescence supramolecular polymer design method offers a convenient pathway for future engineering of multi-stimuli-responsive materials.

中文翻译：

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基于蒽光反应的可调发光镧系元素超分子组装

镧系发光材料通常在发光材料中显示出巨大的优势，从而在高级功能材料的设计中得到了越来越多的探索。在这里，我们通过主体分子（1）和二镧系金属的配位制备了超分子组装体。化合物1具有带有光敏性的9,10-二苯基蒽（ant）核心和末端的吡啶（tpy），其中含有双臂二苯并24-冠-8。在1个蒽单元进行光反应后，该组件可表现出出色的镧系元素发光。。重要的是，组件的发光可以在光照射或加热时通过可调节的光反应可逆地开启和关闭。多种功能行为与易于组装的组合表明，这种光/热控制的镧系元素发光超分子聚合物设计方法为将来的多刺激响应材料的工程化提供了方便的途径。