Two new complexes constructed by semirigid carboxylic acid ligand: Synthesis, crystal structures, absorption of organic dye and photoluminescence properties

• Published in: Inorganica Chimica Acta 2016-11, Vol.453, p.488-493
• Main Authors: Wu, Ya-Jun, Hu, Dong-Cheng, Yao, Xiao-Qiang, Yang, Yun-Xia, Liu, Jia-Cheng
• Format: Article
• Language: English
• Subjects: Absorption; Adsorption; Chains; Crystal structure; Dyes; Ethene; Fluorescence; Fourier transforms; Infrared spectroscopy; Iodine; Ligands; Luminescence quenching; Luminescence sensing; Metal-organic frameworks; Photoluminescence; Single crystals; Structural analysis; Thermogravimetric analysis; X ray powder diffraction; X-ray diffraction
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/j.ica.2016.09.016

Two metal–organic frameworks (MOFs), [Ag2(H2L)(4,4′-bipy)(μ3-OH)]n (1) and [Zn3(L)2(bpe)2(H2O)2]n (2) were synthesized under hydrothermal conditions. The compounds 1 shows rapid uptake for methyl orange (MO) and iodine (I2), compound 2 is a very excellent Zn-MOF based sensor for detecting Fe3+ in aqueous solution. [Display omitted] •We study synthesized two metal–organic frameworks materials that used a semi-rigid carboxylic acid organic ligand. Complex 1 is a high multi-cored three-dimensional (3D) network with a (4,4)-connected topology and a symbol of (63.83)4(86).•The fascinating is that compound 1 shows rapid uptake for methyl orange (MO) and iodine (I2) molecule.•Compound 2 is a very fluorescent excellent sensor for detecting Fe3+ in aqueous solution. Two metal–organic frameworks (MOFs), [Ag2(H2L)(4,4′-bipy)(μ3-OH)]n (1) and [Zn3(L)2(bpe)2(H2O)2]n (2) were synthesized under hydrothermal conditions using the tricarboxylate and N-containing ligands (H3L=3-(3-carboxyphenoxy) phthalic acid, 4,4′-bipy=4,4′-bipyridine, bpe=1,2-di(pyridine-4-yl)ethene), and structurally characterized by single-crystal X-ray diffraction analysis, FT-IR spectroscopy, powder X-ray diffraction (PXRD) and thermogravimetric analysis (TGA), furthermore, fluorescent spectra and absorption properties are discussed. Structural analysis reveals that Complex 1 is built from H3L, 4,4′-bipy and trinucleated Ag to form a three-dimensional (3D) network with a (4,4)-connected topology and a symbol of (63.83)4(86). As for 2, a trinucleate secondary building units (SBU), linked by the H3L ligand generated a one-dimensional (1D) chain, then the two adjacent 1D chains are joined together by bpe ligand, yielding a 1D trapezoidal chain. Our successive application studies indicate that complex 1 shows rapid uptake for methyl orange (MO) and iodine (I2), compound 2 is an impressive Zn-MOF based sensor for detecting Fe3+ ions in aqueous solution.