A chelating coumarin-derived ligand sensitizes all emitting lanthanide ions in the solid state and gives high absolute quantum yields for ethanol solutions of complexes of Sm, Eu, Tb, and Dy, above 20% for the last two. Crystal structures of these four complexes are [Ln(Cum)₃(H₂O)(X)]·X where X = MeOH or EtOH.

中文翻译：

---

直接与镧系元素配位的香豆素衍生物可作为UV-Vis和近红外发射的出色天线

螯合的香豆素衍生的配体可敏化固态的所有发射镧系元素离子，并为Sm，Eu，Tb和Dy的复合物的乙醇溶液提供高的绝对量子产率，对于后两者来说，均超过20％。这四种络合物的晶体结构为[Ln（Cum）₃（H ₂ O）（X）]·X，其中X = MeOH或EtOH。