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

Two novel lanthanide metal‐organic frameworks (LnMOFs), Ln 1.14 Na 0.57 (BDC) 2 (H 2 O) ⋅ 4H 2 O (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 [LnO 10 ] 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 λ exc =321 nm, which renders the material attractive for white LED application.