Large Titanium-Oxo Clusters as Precursors to Synthesize the Single Crystals of Ti-MOFs

Titanium­(IV)-based metal-organic frameworks (Ti-MOFs) have received significant attention in recent years because of their numerous photocatalytic applications; however, the synthesis of new Ti-MOFs with precise crystal structures is still challenging. Herein, three new Ti-MOFs with single-crystal...

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Published inACS materials letters Vol. 3; no. 1; pp. 64 - 68
Main Authors Sun, Yayong, Lu, Dong-Fei, Sun, Yuexin, Gao, Mei-Yan, Zheng, Nan, Gu, Cheng, Wang, Fei, Zhang, Jian
Format Journal Article
LanguageEnglish
Published American Chemical Society 04.01.2021
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Summary:Titanium­(IV)-based metal-organic frameworks (Ti-MOFs) have received significant attention in recent years because of their numerous photocatalytic applications; however, the synthesis of new Ti-MOFs with precise crystal structures is still challenging. Herein, three new Ti-MOFs with single-crystal structures (denoted as FIR-125–FIR-127) are rationally synthesized by employing a large Ti44-oxo cluster as the precursor to assembly with the organic ligand. Big single-crystals can be successfully obtained and structurally determined by single-crystal X-ray diffraction. During the synthesis, the large Ti44-oxo cluster is transferred to small Ti8O8(CO2)16 building units in the Ti-MOF. In addition, FIR-125 exhibit high stability, permanent porosity, and photocatalytic activity. This work provides a new strategy toward the big crystal growth of Ti-MOFs through the slow transformation of large titanium-oxo clusters.
ISSN:2639-4979
2639-4979
DOI:10.1021/acsmaterialslett.0c00456