کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1312213 | 1499175 | 2014 | 7 صفحه PDF | دانلود رایگان |
• Seven 3D lanthanide metal–organic frameworks (LnMOFs) have been synthesized.
• The ligand is 9,9-dimethylfluorene-2,7-dicarboxylic acid (H2MFDA).
• These LnMOFs all feature a 3D Ln–O rod-packing structure with 1D channels.
• These LnMOFs all display the intense solid-state blue emissions.
Seven three-dimensional (3D) lanthanide metal–organic frameworks (LnMOFs) [Ln3(MFDA)4(NO3)(DMF)3]n (Ln = Sm (1), Gd (2), Tb (3), Dy (4)) and {[Ln2(MFDA)2(HCOO)2(H2O)6]·H2O}n (Ln = Gd (5), Tb (6), Dy (7), H2MFDA = 9,9-dimethylfluorene-2,7-dicarboxylic acid, DMF = N,N-dimethylformamide) have been solvothermally synthesized and their structures have been determined using either X-ray powder or single-crystal diffraction data. 1–4 are isostructural, 5–7 are isostructural. Their structures all feature a 3D Ln–O rod-packing structure with 1D channels occupied by guest molecules. The solvent accessible spaces of the desolvated phase for 1–7 are about 29% of the total volume. The photoluminescent properties of 1–7 have been investigated. Complexes 1–7 all display the fluorene-based blue emission originated from the π–π∗ transitions in the solid state at room temperature. The thermal properties of 1–7 have also been studied.
Seven three-dimensional lanthanide metal–organic frameworks [Ln3(MFDA)4(NO3)(DMF)3]n (Ln = Sm (1), Gd (2), Tb (3), Dy (4)) and {[Ln2(MFDA)2(HCOO)2(H2O)6]·H2O}n (Ln = Gd (5), Tb (6), Dy (7), H2MFDA = 9,9-dimethylfluorene-2,7-dicarboxylic acid, DMF = N,N-dimethylformamide) have been solvothermally synthesized and structurally characterized. Their structures all feature a 3D Ln–O rod-packing structure with 1D channels. 1–7 all display the fluorene-based blue emission originated from the π–π∗ transitions in the solid state at room temperature.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 413, 24 March 2014, Pages 38–44