Lanthanide Isophthalate Metal‐Organic Frameworks: Crystal Structure, Thermal Behavior, and White Luminescence

International audienceTwo novel lanthanide metal-organic frameworks (LnMOFs), Ln1.14Na0.57(BDC)2(H2O)4H2O (Ln = La 3+ or Ce 3+ , BDC : 1,3-benzenedicarboxylate), have been synthesized under hydrothermal conditions by using a Ln 3+ coordination polymer as precursor. The crystal structure was determined from single crystal X-ray diffraction. Both compounds are isostructural and contain chains of face-sharing [LnO10] polyhedra connected by the linkers to form an anionic three-dimensional network, defining both polar and apolar channels, the latter being occupied by water molecules and Ln 3+ and Na + cations. When doped by optimized content of Eu 3+ and Tb 3+ , the La 3+ counterpart exhibits white luminescence emission with CIE parameters equal to (0.3440, 0.3735) at λexc = 321 nm, which renders the material attractive for white LED application