The cathodoluminescence (CL) of organo-lanthanide complexes is studied as a modeling of beta luminescence. It is found that complexes of Sc, La, and lanthanides with anionic ÔO, ÔN bidentate and O-monodentate ligands under excitation by fast electrons display luminescence of various intensities. In the spectra of Sc, La, Nd, Er, and Tm compounds, only broadened bands of the ligands peaked about 450 nm are observed. A similar spectrum gives anthracene, which is used as a reference compound. In contrast, the emission spectra of Eu and Tb compounds contain only the narrow bands of f–f transitions characteristic of these metals. The spectra of Sm, Dy, and Yb derivatives exhibit both the bands of ligands and weak metal-centered luminescence. X-ray luminescence (RL) of several terbium complexes is also investigated. A comparison of the photoluminescence, CL and RL spectra of the studied compounds reveals a similarity of the shape of the spectra but a significant difference in their intensities. Terbium compounds show record scintillating activity. Possible mechanisms of luminescence of organo-lanthanide complexes upon different types of excitation are discussed.

中文翻译：

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有机镧系配合物的阴极发光

研究了有机镧系元素络合物的阴极发光（CL）作为β发光的模型。发现在快速电子激发下，Sc，La和镧系元素与阴离子ÔO，ÔN二齿和O-单齿配体的配合物显示出各种强度的发光。在Sc，La，Nd，Er和Tm化合物的光谱中，仅观察到峰值约450 nm的配体的宽带化。蒽得到相似的光谱，用作参考化合物。相反，Eu和Tb化合物的发射光谱仅包含这些金属的f–f跃迁的窄带。Sm，Dy和Yb衍生物的光谱同时显示出配体带和弱金属中心发光。还研究了几种ter配合物的X射线发光（RL）。光致发光的比较 所研究化合物的CL和RL光谱揭示了光谱形状的相似性，但强度却存在显着差异。compounds化合物显示出创纪录的闪烁活性。讨论了不同激发类型下有机镧系元素配合物发光的可能机理。