Synthesis and photoluminescence properties of polymer chains based on pre-designed heterometallic Al4Ln4 molecular rings

Abstract

Presented herein is a series of chain compounds based on pre-designed heterometallic aluminum–lanthanide (Al–Ln) Al₄Ln₄ molecular rings. Their photoluminescence quantum yield (PLQY) with Eu³⁺ (30.41%) and Tb³⁺ (41.44%) is at a high level among the clusters containing four Ln ions. This study significantly extends the family of Al–Ln heterometallic clusters and demonstrates the synergistic effect of heterometallic ions in enhancing their properties.