Gutov Oleksii V, González Hevia Miguel, Escudero-Adán Eduardo C, Shafir Alexandr
Institute of Chemical Research of Catalonia (ICIQ), Avda. Països Catalans 16, 43007, Tarragona, Spain.
Inorg Chem. 2015 Sep 8;54(17):8396-400. doi: 10.1021/acs.inorgchem.5b01053. Epub 2015 Aug 20.
For three-dimensional (3D) metal-organic frameworks (MOFs), the presence and nature of structural defects has been recognized as a key factor shaping the material's physical and chemical behavior. In this work, the formation of the "missing linker" defects has been addressed in the model biphenyl-4,4'-dicarboxylate (bpdc)-based Zr MOF, UiO-67. The defect showed strong dependence on the nature of the modulator acid used in the MOF synthesis; the defects, in turn, were found to correlate with the MOF physical and chemical properties. The dynamic nature of the Zr6 (node)-monocarboxylate bond showed promise in defect functionalization and "healing", including the formation of X-ray-quality "defect-free" UiO-67 single crystals. Chemical transformations at defect sites have also been explored. The study was also extended to the isoreticular UiO-66 and UiO-68' systems.
对于三维（3D）金属有机框架（MOF），结构缺陷的存在及其性质已被视为塑造材料物理和化学行为的关键因素。在这项工作中，在基于联苯-4,4'-二羧酸酯（bpdc）的Zr MOF UiO-67模型中研究了“缺失连接体”缺陷的形成。该缺陷对MOF合成中使用的调节剂酸的性质表现出强烈依赖性；反过来，发现这些缺陷与MOF的物理和化学性质相关。Zr6（节点）-单羧酸酯键的动态性质在缺陷功能化和“修复”方面显示出前景，包括形成X射线质量的“无缺陷”UiO-67单晶。还探索了缺陷位点的化学转化。该研究还扩展到了同网状的UiO-66和UiO-68'体系。
