Reticular chemistry guided precise construction of zirconium-pentacarboxylate frameworks with 5-connected Zr 6 clusters

Zirconium-based metal-organic frameworks (Zr-MOFs) have been extensively studied due to their very rich structural chemistry. The combination of nearly unlimited carboxylic acid-based linkers and Zr clusters with multiple connectivities has led to diverse structures and specific properties of result...

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Published in:Chemical science (Cambridge) 2024-02, Vol.15 (9), p.3174-3181
Main Authors: Peng, Tianyou, Han, Chao-Qin, Xia, Hai-Lun, Zhou, Kang, Zhang, Jian, Si, Jincheng, Wang, Lei, Miao, Jiafeng, Guo, Fu-An, Wang, Hao, Qu, Lu-Lu, Xu, Guozhong, Li, Jing, Liu, Xiao-Yuan
Format: Article
Language:English
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Summary:Zirconium-based metal-organic frameworks (Zr-MOFs) have been extensively studied due to their very rich structural chemistry. The combination of nearly unlimited carboxylic acid-based linkers and Zr clusters with multiple connectivities has led to diverse structures and specific properties of resultant Zr-MOFs. Herein, we demonstrate the successful use of reticular chemistry to construct two novel Zr-MOFs, HIAM-4040 and HIAM-4040-OH, with zfu topology. Based on a thorough structural analysis of (4,4)-connected lvt-type Zr-tetracarboxylate frameworks and a judicious linker design, we have obtained the first example of a Zr-pentacarboxylate framework featuring unprecedented 5-connected organic linkers and 5-connected Zr clusters. Compared with HIAM-4040, a larger Stokes shift is achieved in HIAM-4040-OH hydroxyl group induced excited-state intramolecular proton transfer (ESIPT). HIAM-4040-OH exhibits high chemical and thermal stability and is used for HClO detection in aqueous solution with excellent sensitivity and selectivity.
ISSN:2041-6520
2041-6539
DOI:10.1039/D3SC05410A