两种化学稳定的 Cd(II)-骨架用于高效检测左氧氟沙星、苯甲醛和 Fe 离子。
Two chemically robust Cd(II)-frameworks for efficient sensing of levofloxacin, benzaldehyde, and Fe ions.
机构信息
College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electrocatalytic Materials, North China University of Science and Technology, No. 21 Bohai Road, Caofeidian new-city, Tangshan, Hebei, 063210, P. R. China.
Department of Physics and CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal.
出版信息
Dalton Trans. 2021 Nov 9;50(43):15743-15753. doi: 10.1039/d1dt03205d.
Two luminescent Cd(II)-organic frameworks [Cd(L1)(tdc)(HO)] (1) and [Cd(L2)(tdc)] (2) (L1 = 1,5-bis(1-(pyridine-4-ylmethyl)-1-benzo[]imidazol-2-yl)pentane, L2 = 1,6-bis(1-(pyridine-4-ylmethyl)-1-benzo[]imidazol-2-yl)hexane, and Htdc = 2,5-thiophenedicarboxylic acid) were hydrothermally synthesized and characterized. 1 displays a rare binodal (3,4)-connected 2D cem-d network, while 2 exhibits a 3D mog (moganite) framework. The two MOFs are highly thermally durable and water-stable in a wide pH range from 3 to 12. Interestingly, 1 and 2 represent the first reported examples of multi-responsive probes based on MOFs for selectively detecting levofloxacin, benzaldehyde, and Fe ions with reusability. The luminescence sensing mechanisms of the two CPs were explored in detail.
两种发光 Cd(II)-有机框架[Cd(L1)(tdc)(HO)]（1）和[Cd(L2)(tdc)]（2）（L1=1,5-双（1-（吡啶-4-基甲基）-1-苯并[]咪唑-2-基）戊烷，L2=1,6-双（1-（吡啶-4-基甲基）-1-苯并[]咪唑-2-基）己烷，和 Htdc=2,5-噻吩二甲酸）是通过水热合成法合成并进行了表征的。1 显示了罕见的双节点（3,4）连接的 2D cem-d 网络，而 2 则表现出 3D mog（moganite）骨架。这两种 MOF 在很宽的 pH 值范围内（从 3 到 12）具有高热稳定性和水稳定性。有趣的是，1 和 2 代表了基于 MOF 的多响应探针的首次报道实例，用于选择性地检测左氧氟沙星、苯甲醛和 Fe 离子，并且具有可重复使用性。详细探讨了两种配合物的发光传感机制。
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