Due to the high demand for blue organic light‐emitting diodes (blue‐OLED), in this work, a new class of them with lanthanide complexes is engineered based on a chemical design. Four new rare‐earth metals complexes, Nd₂(C₁₁H₉NO)₄(NO₃)₄(CH₃COO)₂·2(CH₃OH) (1), Pr₂(C₁₁H₉NO)₄(NO₃)₄(CH₃COO)₂·2(CH₃OH) (2), Sm₂(C₁₁H₉NO)₄(NO₃)₄(CH₃COO)₂·2(CH₃OH) (3), and Tm₂(C₁₁H₉NO)₄(NO₃)₄(CH₃COO)₂·2(CH₃OH) (4) as new precursors for fabrication of blue‐OLED were synthesized using 8‐hydroxy‐2‐methylquinoline as the primary ligand. The synthesized complexes were characterized by UV/Vis and infrared spectroscopy, elemental analysis, and X‐ray powder diffraction. The molecular structure of 1 and 2 as representative complexes were accomplished by single‐crystal X‐ray diffraction. The single‐crystal structures showed complexes 1 and 2 are iso‐structural. The similar X‐ray powder diffraction patterns of prepared complexes revealed the same structure for all of them. The results showed that the photoluminescence spectra of the complexes could scrutinize by the impact of rare‐earth metals. The strong blue fluorescence emission spectra of the prepared complexes showed they are suitable for the fabrication blue light‐emitting diodes using a simple processing method, and this may overcome the high demand of blue‐OLED.

中文翻译：

---

新的稀土金属配合物的体系结构，作为制备具有蓝移荧光的新型OLED的前体

由于对蓝色有机发光二极管（blue-OLED）的需求很高，在这项工作中，基于化学设计设计了新型的镧系元素配合物。四种新的稀土金属配合物Nd ₂（C ₁₁ H ₉ NO）₄（NO ₃）₄（CH ₃ COO）₂ · 2（CH ₃ OH）（1），Pr ₂（C ₁₁ H ₉ NO）₄（NO ₃）₄（CH ₃ COO）₂ · 2（CH ₃ OH）（2），Sm ₂（C ₁₁ H ₉ NO）₄（NO ₃）₄（CH ₃ COO）₂ · 2（CH ₃ OH）（3）和Tm ₂（C ₁₁ H ₉ NO）₄（NO ₃）₄（CH ₃ COO）₂ · 2（CH ₃ OH）（4）是使用8-羟基-2-甲基喹啉作为主要配体合成的用于制备Blue-OLED的新前体。通过UV / Vis和红外光谱，元素分析和X射线粉末衍射对合成的复合物进行表征。1和2作为代表复合物的分子结构是通过单晶X射线衍射完成的。单晶结构显示复合物1和2是同构的。制备的复合物的相似X射线粉末衍射图谱显示所有复合物的结构相同。结果表明，配合物的光致发光光谱可以受到稀土金属的影响进行仔细检查。所制备的配合物的强蓝色荧光发射光谱表明，它们适用于使用简单的加工方法制造蓝色发光二极管，这可以克服对蓝色OLED的高要求。