Liu Jian-Jun, Xia Shu-Biao, Que Qi-Tao, Suo Hongbo, Liu Jiaming, Shen Xiang, Cheng Fei-Xiang
Center for Yunnan-Guizhou Plateau Chemical Functional Materials and Pollution Control, Qujing Normal University, Qujing 655011, China.
School of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, China.
Dalton Trans. 2020 Mar 9;49(10):3174-3180. doi: 10.1039/c9dt04928b.
Mechanoresponsive luminescent materials coupled with other functionalities are of particular interest due to their multiple external stimuli responsive properties. In this paper, a new sensitive mechanoresponsive luminescent coordination polymer, [Cd(INI)(DMF)2·DMF] (1) (H2INI = N-(5-isophthalic acid)-1,8-naphthalimide), has been successfully designed and synthesized. Complex 1 exhibits interesting mechanoresponsive and grinding-enhanced luminescence properties, and its luminescence colour changed from weak blue-green to bright blue upon grinding owing to the external pressure-induced destruction of ππ stacked arrangements in local defective areas. Moreover, the luminescence properties and uncoordinated carbonyl groups of well-ground g-1 endow it with excellent sensing ability for Cr3+ ions. This work will provide a new perspective to rationally design multifunctional coordination polymers that can serve as practical multi-responsive sensors to pressure and chemicals.
由于其对多种外部刺激的响应特性，具有其他功能的机械响应发光材料特别受关注。本文成功设计并合成了一种新型的灵敏机械响应发光配位聚合物[Cd(INI)(DMF)₂·DMF] (1)（H₂INI = N-(5-间苯二甲酸)-1,8-萘二甲酰亚胺）。配合物1表现出有趣的机械响应和研磨增强发光特性，由于外部压力导致局部缺陷区域的π-π堆积排列被破坏，研磨后其发光颜色从弱蓝绿色变为亮蓝色。此外，充分研磨后的g-1的发光特性和未配位的羰基赋予其对Cr³⁺离子优异的传感能力。这项工作将为合理设计多功能配位聚合物提供新的视角，这些聚合物可作为实用的对压力和化学物质的多响应传感器。
