In this study,using 3,5‑di(3′,5′‑dicarboxylphenyl)‑1H‑1,2,4‑triazole(H4L)as ligands,a gadolinia‑based organic framework complex{[GdNa(L)(H_(2)O)3]·2H_(2)O}_(n)(Gd‑Na‑MOF)was successfully designed and synthesize...In this study,using 3,5‑di(3′,5′‑dicarboxylphenyl)‑1H‑1,2,4‑triazole(H4L)as ligands,a gadolinia‑based organic framework complex{[GdNa(L)(H_(2)O)3]·2H_(2)O}_(n)(Gd‑Na‑MOF)was successfully designed and synthesized by hydrothermal method.The structure and properties were systematically characterized and tested by techniques such as single‑crystal X‑ray diffraction,powder X‑ray diffraction,thermogravimetric analysis,infrared spectroscopy,and fluorescence spectroscopy.The results indicate that this complex has a unique 3D structure,excellent thermal stability,and outstanding luminescent performance.Based on its luminescent properties,a polymer‑embedding method was employed to fabricate the Gd‑Na‑MOF into a flexible,washable composite fluorescent film,Gd‑Na‑MOF@PMMA/BMA(PMMA=polymethyl methacrylate,BMA=butyl methacrylate).This fluorescent film exhibited highly sensitive recognition capability for tyramine,with a low detection limit of 1.66μmol·L^(-1).It was used for the detection of tyramine in bananas,with a recovery rate of 96.92%‑100.26%.CCDC:2466949.展开更多
To address the challenges of poor solubility and difficult recyclability of powdered metal-organic frameworks(MOFs),a Eu-based MOF complex,[EuNa(L)(H_(2)O)_(3)]·2H_(2)O(Eu/Na-MOF),was synthesized by the hydrother...To address the challenges of poor solubility and difficult recyclability of powdered metal-organic frameworks(MOFs),a Eu-based MOF complex,[EuNa(L)(H_(2)O)_(3)]·2H_(2)O(Eu/Na-MOF),was synthesized by the hydrothermal method using 3,5-bis(3,5-dicarboxyphenyl)-1H-1,2,4-triazole(H4L)as the ligand in this study.Systematic characterization and performance evaluation revealed that the complex exhibits a unique 3D structure,high phase purity,excellent thermal stability,and outstanding luminescent properties.Furthermore,the complex was encapsulated in poly(methyl methacrylate)(PMMA)to fabricate a flexible and water-washable composite fluorescent film(Eu/NaMOF/PMMA).Based on static and dynamic quenching mechanisms,respectively,the film enables reversible detection of tryptamine and Cr_(2)O_(7)^(2-) ions in aqueous solutions,demonstrating high selectivity,stability,and portability.展开更多
文摘In this study,using 3,5‑di(3′,5′‑dicarboxylphenyl)‑1H‑1,2,4‑triazole(H4L)as ligands,a gadolinia‑based organic framework complex{[GdNa(L)(H_(2)O)3]·2H_(2)O}_(n)(Gd‑Na‑MOF)was successfully designed and synthesized by hydrothermal method.The structure and properties were systematically characterized and tested by techniques such as single‑crystal X‑ray diffraction,powder X‑ray diffraction,thermogravimetric analysis,infrared spectroscopy,and fluorescence spectroscopy.The results indicate that this complex has a unique 3D structure,excellent thermal stability,and outstanding luminescent performance.Based on its luminescent properties,a polymer‑embedding method was employed to fabricate the Gd‑Na‑MOF into a flexible,washable composite fluorescent film,Gd‑Na‑MOF@PMMA/BMA(PMMA=polymethyl methacrylate,BMA=butyl methacrylate).This fluorescent film exhibited highly sensitive recognition capability for tyramine,with a low detection limit of 1.66μmol·L^(-1).It was used for the detection of tyramine in bananas,with a recovery rate of 96.92%‑100.26%.CCDC:2466949.
文摘To address the challenges of poor solubility and difficult recyclability of powdered metal-organic frameworks(MOFs),a Eu-based MOF complex,[EuNa(L)(H_(2)O)_(3)]·2H_(2)O(Eu/Na-MOF),was synthesized by the hydrothermal method using 3,5-bis(3,5-dicarboxyphenyl)-1H-1,2,4-triazole(H4L)as the ligand in this study.Systematic characterization and performance evaluation revealed that the complex exhibits a unique 3D structure,high phase purity,excellent thermal stability,and outstanding luminescent properties.Furthermore,the complex was encapsulated in poly(methyl methacrylate)(PMMA)to fabricate a flexible and water-washable composite fluorescent film(Eu/NaMOF/PMMA).Based on static and dynamic quenching mechanisms,respectively,the film enables reversible detection of tryptamine and Cr_(2)O_(7)^(2-) ions in aqueous solutions,demonstrating high selectivity,stability,and portability.
