Synthesis, crystal structure and luminescent properties of a new samarium-fluorescein metal-organic framework

• A new samarium-fluorescein metal-organic framework with empirical formula C43H30NO12Sm was synthesized (CCDC 971490).
• Single crystal X-ray diffraction reveals that the crystal structure belongs to the triclinic system, P-1 space group.
• The synthesized metal-organic framework shows good luminescence property and thermal stability.
• The synthesized MOF can be used as a good candidate for efficient luminescent materials.

A new metal-organic framework with empirical formula C43H30NO12Sm was solvothermally synthesized using SmCl3, fluorescein and N, N-Dimethyl formamide (DMF) and characterized by single crystal X-ray diffraction, powder X-ray diffraction, infrared spectroscopy, UV–Visible spectroscopy, scanning electron microscopy, optical microscopy, photoluminescence spectroscopy, CHN elemental analysis and thermogravimetric analysis. Single crystal X-ray diffraction revealed that the crystal structure belongs to the triclinic system, P-1 space group with a = 12.113 (6) Å, b = 12.1734 (7) Å, c = 13.2760(8) Å, α = 67.930(3)⁰, β = 87.779(3)⁰, γ = 77.603(3)⁰ and V = 1769.71 (17) Å3. The photoluminescence spectrum showed emission peaks at 550 nm, 600 nm and 647 nm due to the characteristic transitions 4G5/2 to 6H5/2, 4G5/2 to 6H7/2 and 4G5/2 to 6H9/2 respectively, when excited at 398 nm.

Figure optionsDownload as PowerPoint slide