State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou, Fuzhou, Fujian, 350002, P.R. China.
University of Chinese Academy of Sciences, Beijing, 100049, P.R. China.
Chemistry. 2018 Aug 1;24(43):11033-11041. doi: 10.1002/chem.201802502. Epub 2018 Jul 18.
Selective probing of one molecule from one class of similar molecules is highly challenging due to their similar chemical and physical properties. Herein, a novel metal-organic framework FJI-H15 with flexible porous cages has been designed and synthesized, which can specifically recognize ethylbenzene with ultrahigh enhancement efficiency from a series of alkyl-aromatics, in which an unusual size-dependent interaction has been found and proved. It can also selectively detect phenolic-nitroaromatics among a series of nitroaromatics based on energy transfer and electrostatic interactions. Such unusual specificity and variable mechanisms responding to different types of molecules have not yet been reported, which will provide a new strategy for the development of more effective chemosensors based on MOFs for probing small structural differences in molecules.
由于同类分子在化学和物理性质上具有相似性，因此从一类相似分子中选择性探测某一特定分子极具挑战性。在此，设计并合成了一种具有灵活多孔笼的新型金属-有机骨架 FJI-H15，它可以从一系列烷基芳烃中特异性识别出超高增强效率的乙苯，其中发现并证明了一种不寻常的尺寸依赖性相互作用。它还可以基于能量转移和静电相互作用在一系列硝基芳烃中选择性检测酚基硝基芳烃。这种不寻常的特异性和针对不同类型分子的可变机制尚未见报道，这将为基于 MOFs 开发更有效的化学传感器以探测分子中的微小结构差异提供新策略。
