Crystal engineering of rare earth heteroleptic complexes: phosphine oxide ligand control, POM-directed assembly, and performance metrics. - Xu, Jian-Jie; Wang, Lin-Lin; Wang, Ying-Long; Guo, Gui-Xiong; Liu, Jian-Ming; Dai, Li-Xiong; Liu, Min; Jin, Qiong-Hua (CrystEngComm, 2025)