Photoluminescence Properties of Eu(III) Complexes with an Asymmetric Diphosphine Dioxide Ligand for Potential Uses in LED, Security, and Sensing Devices

established molecular design concept of Eu(III) complexes for increasing photoluminescence intensity and solubility in polymers and solvents. Several dozens of Eu(III) complexes according to this concept were synthesized and their photoluminescence properties were investigated. Coordinating asymmetric diphosphine dioxide ligand to a Eu(III) ion found to be significantly effective for improving photoluminescence properties of Eu(III) complexes. Colorless and transparent materials involving these Eu(III) complexes are promising candidates for LED devices, security, and sensing.