A one-pot process has been developed for the synthesis of hierarchical-pore metal–organic frameworks, aimed at loading large and small drug molecules simultaneously.
A novel 3D microporous compound [Zn3(Httca)2(4,4'-bpy)(H2O)2]n (MOF-COOH) containing uncoordinated carbonyl groups pointing to the pores was prepared. The uncoordinated carbonyl groups in the channels can act as postsynthetic modification sites for cation exchange. The MOF-COOH compound can effectively and selectively serve as an antenna for sensitizing the visible-emitting Tb(3+) cation.
In our efforts toward rational design and systematic synthesis of porous 3D MOFs, three 3D frameworks of Zn-MOFs ([Zn(BDC)(TIB)]·3H 2 O (Zn-MOF-1) (TIB = 1, 3, 5-tri (1H-imidazol-1-ly) benzene and H 2 BDC = 1,4-dicarboxybenzene), [Zn(BDA)(TIB) 2/3 ] n (Zn-MOF-2) (H 2 BDA=(4,4'-biphenyl-dicarboxylic acid) and [Zn 3 (BDC) 2 (BDA)(TIB) 2 ] n (Zn-MOF-3) were successfully synthesized, based on different multicarboxylate ligands by means of solvothermal reactions. The resulted MOFs show the similar 3D structures with different porous size which lead to distinct selective adsorption for organic dyes. Remarkably, Zn-MOF-1 exhibits excellent capacity to absorb CR (congo red) with high selectivity, and it maintains almost identical adsorption performance after several times recycle.Introduction:
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