Chu Jin-Peng, Fang Pu-Hao, Zhang Zhi-Qiang, Liu Xiao-Yuan
School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, P. R. China.
Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic University, 7098 Liuxian Boulevard, Nanshan District, Shenzhen 518055, P. R. China.
Inorg Chem. 2024 Oct 28;63(43):20276-20280. doi: 10.1021/acs.inorgchem.4c02803. Epub 2024 Oct 15.
Luminescent metal-organic frameworks (LMOFs) exhibit promising applications as chemical sensors, especially for organic-linker-based LMOFs due to their unlimited structures and pre- and postfunctionality. However, it is still a challenge to introduce specific functional groups into LMOFs as reaction sites for sensing. Herein, a new luminescent zirconium-based metal-organic framework (Zr-MOF), HIAM-4009L, is reported with underlying net. By integrating the hydroquinone moiety into the skeleton of the organic linker via the reaction between -diamine and aldehydes, nanosized HIAM-4009L exhibits reversible emission responses toward hypochlorous acid (HClO) and l-ascorbic acid (vitamin C, Vc) due to the switchable hydroquinone/quinone reaction. This nano-MOF can be used as a reaction-based chemical sensor for HClO and Vc detection with high selectivity and sensitivity. The present work not only provides nanosized MOFs for the reversible detection of HClO and Vc but also sheds light on the rational design of LMOFs with specific functional groups using an -diamine- and aldehyde-based reaction.
发光金属有机框架材料（LMOFs）作为化学传感器展现出了广阔的应用前景，特别是对于基于有机连接体的LMOFs，因其具有无限的结构以及可进行前功能化和后功能化修饰。然而，将特定官能团引入LMOFs作为传感反应位点仍然是一项挑战。在此，报道了一种具有潜在网络结构的新型发光锆基金属有机框架材料（Zr-MOF），即HIAM-4009L。通过二胺与醛之间的反应将对苯二酚部分整合到有机连接体的骨架中，纳米尺寸的HIAM-4009L由于对苯二酚/醌的可逆反应，对次氯酸（HClO）和L-抗坏血酸（维生素C，Vc）表现出可逆的发射响应。这种纳米MOF可以用作基于反应的化学传感器，用于高选择性和高灵敏度地检测HClO和Vc。本工作不仅为可逆检测HClO和Vc提供了纳米尺寸的MOFs，还为利用基于二胺和醛的反应合理设计具有特定官能团的LMOFs提供了思路。
