Aggregation-induced emission (AIE) of a Eu(III) complex using ligand-to-metal charge transfer band is demonstrated. The Eu(III) complex comprises three anionic 2,2,6,6-tetramethyl-3,5-heptanedionate (tmh) ligands and one large π-conjugated neutral dipyrido[3,2-f:2’,3’-h]quinoxaline (dpq) ligand. Crystalline H-aggregates of the Eu(III) complex were characterized by X-ray crystal structure analysis. H-aggregation-induced emission (H-AIE) properties were evaluated using emission spectra, emission lifetime, and quantum yields. The energy transfer efficiency of the H-aggregate in the solid state is five times larger than that of the isolated Eu(III) complex in solution.

证明了使用配体-金属电荷转移带的Eu（III）配合物的聚集诱导发射（AIE）。Eu（III）络合物包含三个2,2,6,6-四甲基-3,5-庚二酸阴离子（tmh）配体和一个大的π共轭中性二吡啶基[3,2-f：2'，3'-h ]喹喔啉（dpq）配体。Eu（III）配合物的结晶H-聚集体通过X射线晶体结构分析来表征。使用发射光谱，发射寿命和量子产率评估了H聚集诱导的发射（H-AIE）特性。固态H聚集体的能量传递效率是溶液中分离的Eu（III）配合物的能量传递效率的五倍。