Mixed-Lanthanide Metal–Organic Frameworks with Tunable Color and White Light Emission

Three isostructural lanthanide metal–organic frameworks (Ln-MOFs, Ln = Eu 3+, Tb 3+, Dy 3+ ) containing P -terphenyl-2,2″,4,4″-tetracarboxylate ligand (H 4 L) with red, green, and blue luminescence were solvothermally synthesized. Thus, a series of mixed Ln-MOFs, (Eu x Tb y Dy 1 -x-y )(HL)(H 2 O)(DEF) (DEF, N, N -diethylformamide), were designed and obtained, which displayed highly temperature-tuned emission in the visible region, including white light emission. Additionally, tunable luminescence can also be achieved by changing the excitation wavelength.