Excitation wavelength-induced color-tunable and white-light emissions in lanthanide(III) coordination polymers constructed using an environment-dependent luminescent tetrazolate–dicarboxylate ligand

An alternative approach to fabricate color-tunable and white-light-emitting lanthanide(III) coordination polymers (LnCPs) is demonstrated by employing a selective light-emitting tetrazolate–dicarboxylate ligand, which displays different color emissions when coordinated to different lanthanide(III) ions. The emission colour of the obtained LnCPs can be modulated from orange to white by simply adjusting the excitation wavelengths. White-light emissions, with high color rendering index and favorable correlated color temperature, have been successfully realized in new 2D single-component Sm(III) and two-component Eu(III)-doped Gd(III) coordination polymers excited at specific excitation wavelengths.