基于四苯乙烯结构合成了一种大尺寸聚集诱导发光配体,进一步通过溶剂热法与Mn离子配位合成了一种新型聚集诱导发光金属有机框架taTPE-Mn,通过单晶X射线衍射与荧光光谱对其结构与光学性能进行了表征。配合物taTPE-Mn是具有单斜晶系的三维结构,节点为三中心Mn原子通过6个羧基基团交联形成。此种金属有机框架可以通过荧光淬灭选择性地识别硝基芳香环类含能分子,并进一步应用于2,4,6-三硝基苯酚的高灵敏检测,具有良好的光学传感与应用价值。
A tetraphenylethylene-based large-sized ligand with aggregation-induced emission was synthesized.Furthermore,a novel metal-organic framework with aggregation-induced emission (taTPE-Mn) was prepared by coordination between the ligand and Mn2+.The topology and luminescence property of taTPE-Mn were characterized by single-crystal X-ray diffraction and fluorescence spectra.The three-dimensional structure of taTPE-Mn belonged to the monoclinic crystal system with three Mn2+ centers crosslinked by six carboxyl groups.By fluorescence quenching,the designed taTPE-Mn could selectively recognize nitroaromatics energetic compounds,and was further applied for the high sensitivity detection of 2,4,6-trinitrophenols,providing a promising detection approach in the field of optical sensing.
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基金资助
国家自然科学基金青年基金(22104058);江苏省自然科学基金青年基金项目(BK20200459);南京理工大学自主科研专项计划(30920021125)
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