Halide substituted aromatics are formed by replacing one or several hydrogen atoms in the aromatic hydrocarbon molecules with halogen atoms. During the synthesis of MOFs, since the metal ion is a cation, an anion must be introduced to neutralize all the charges, so that the resulting skeleton becomes neutral, thereby stabilizing the structure of the formed MOFs. In MOFs, inorganic anions can act as free guests, counter ions, or linkers, and one of its important features is the ability to form hydrogen bonds. However, the disadvantage of inorganic anions is that it is difficult to generate a highly porous framework structure. Therefore, organic anionic ligands are mostly used, which can be used together with neutral organic ligands. The Halide substituted aromatics just meet this requirement. Because the properties of MOFs are closely related to their composition. The introduction of strong electron-withdrawing groups (such as halogens) on the benzene ring of the ligands of MOFs can cause changes in the distribution of electron clouds on the benzene ring, thereby changing the amount of drug adsorption on MOFs. In addition, the MOFs synthesized with Halide substituted aromatics also have the characteristics of significantly enhanced fluorescence intensity and high thermal stability.
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CAS No.: 83204-68-6