Several azaxanthone and azathioxanthone sensitising chromophores have been incorporated into macrocyclic ligands and form well-defined Eu and Tb complexes in polar media. Excitation of the heterocyclic chromophore in the range 330 to 382 nm leads to modest amounts of aromatic fluorescence and relatively efficient metal-based luminescence, with absolute metal-based quantum yields of up to 24% in aqueous media.
几种紫茄素和亚
硫紫茄素敏化色素已被纳入大环
配体中,并在极性介质中形成了明确的
铕和
铽复合物。在330到382纳米的范围内激发杂环色素,会产生适量的芳香荧光和相对高效的
金属基发光,在
水介质中
金属基量子产率高达24%。