Title: Robust Rare-Earth Luminescent Complexes

Speaker: Researcher Zhiwei Liu (College of Chemistry and Molecular Engineering, Peking University)

Time: 4:00 – 6:00 PM, Sunday, April 20

Location: Room 501, State Key Laboratory of Luminescent Materials and Devices, Building 1, North Campus Science Park

Abstract:

Rare-earth elements are vital strategic resources for China. Their unique electronic structures and abundant transition energy levels make them a treasure trove for luminescence, with broad applications in displays, lighting, imaging, and other fields. Rare-earth luminescent complexes combine the distinctive photophysical properties of rare-earth ions with the tunability of organic ligands, offering new approaches for constructing molecular-based rare-earth optical functional materials. However, the intrinsic properties of rare-earth ions—such as the susceptibility of low-valent ions to oxidation, their tendency to hydrolyze, and the relatively weak coordination bonds—pose significant challenges to stability, which is a key limiting factor in the high-value utilization of rare-earth luminescent complexes. This presentation will share the research progress made by our group in enhancing the stability of rare-earth luminescent complexes and discuss future directions for further development.