Assembly of unique interpenetrated metal–organic frameworks based on flexible tetra-carboxylate ligands

IF 2.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Polyhedron Pub Date : 2024-08-10 DOI:10.1016/j.poly.2024.117179

Yu-Hui Luo , Xue-Qi Tan , Quan-Yong Chen , Zhi-Yong Liu , Dong-En Zhang , Dan Tian

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Abstract

Entangled metal–organic frameworks (MOFs) are attracting more and more attentions attributed to their special performances, such as adsorption, fluorescence and catalysis. It is still of significant to synthesize new MOF with unique interpenetrating motif. In this work, two new MOFs, namely [(Me₂)NH₂]·[In(TCM)]·4DMF (JOU-32), and [Cd₂(TCM)(DMF)₂]·5DMF (JOU-33), have been successfully synthesized using flexible tetra-carboxylate ligand tetrakis(4-carboxyphenoxymethyl)methane (H₄TCM). The structures of JOU-32 and JOU-33 were well characterized by single-crystal X-ray diffraction. It is shown that JOU-32 reveals a rare example of interpenetrating MOF with two different networks disorderedly distributed within the same crystal. JOU-33 is a (4,8)-connected flu topological structure based on [Cd₄(COO)₈(DMF)₂] cluster. The fluorescent properties for both JOU-32 and JOU-33 have also been tested. The average life times for JOU-32 and JOU-33 were detected to be 2.39 and 2.42 ns, respectively. In addition, both JOU-32 and JOU-33 can be utilized as fluorescent probes for detection of NB. This work provides valuable clues for preparing new fluorescent MOFs with attractive structures.

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组装基于柔性四羧酸配体的独特互穿金属有机框架

缠结金属有机框架（MOFs）因其吸附、荧光和催化等特殊性能而受到越来越多的关注。合成具有独特互穿结构的新型 MOF 仍具有重要意义。本研究利用柔性四羧酸配体四(4-羧基苯氧基甲基)甲烷（H4TCM）成功合成了两种新型 MOF，即[(Me2)NH2]-[In(TCM)]-4DMF（JOU-32）和[Cd2(TCM)(DMF)2]-5DMF（JOU-33）。单晶 X 射线衍射对 JOU-32 和 JOU-33 的结构进行了很好的表征。研究表明，JOU-32 是一种罕见的互穿 MOF，在同一晶体中无序分布着两种不同的网络。JOU-33 是一种基于[Cd4(COO)8(DMF)2]簇的 (4,8)-connected flu 拓扑结构。我们还测试了 JOU-32 和 JOU-33 的荧光特性。经检测，JOU-32 和 JOU-33 的平均寿命分别为 2.39 和 2.42 ns。此外，JOU-32 和 JOU-33 还可用作检测 NB 的荧光探针。这项研究为制备具有诱人结构的新型荧光 MOFs 提供了宝贵的线索。

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来源期刊

Polyhedron 化学-晶体学

CiteScore

4.90

自引率

7.70%

发文量

515

审稿时长

2 months

期刊介绍： Polyhedron publishes original, fundamental, experimental and theoretical work of the highest quality in all the major areas of inorganic chemistry. This includes synthetic chemistry, coordination chemistry, organometallic chemistry, bioinorganic chemistry, and solid-state and materials chemistry. Papers should be significant pieces of work, and all new compounds must be appropriately characterized. The inclusion of single-crystal X-ray structural data is strongly encouraged, but papers reporting only the X-ray structure determination of a single compound will usually not be considered. Papers on solid-state or materials chemistry will be expected to have a significant molecular chemistry component (such as the synthesis and characterization of the molecular precursors and/or a systematic study of the use of different precursors or reaction conditions) or demonstrate a cutting-edge application (for example inorganic materials for energy applications). Papers dealing only with stability constants are not considered.