近日，2020级硕士生李松在Inorg. Chem.发表了题为“Isolated Coordination Polyhedron Confinement in ABP₂O₇:Mn²⁺ (A = Ba/Sr; B = Mg/Zn)”的学术论文，通讯作者是邱忠贤副教授与M.G.Brik教授。

论文摘要：Many research efforts have focused on designing new inorganic phosphors to meet different application requirements. The structure–photoluminescence relationship between activator ions and the matrix lattice plays an irreparable role in designing target phosphors. Herein, a series of ABP₂O₇:Mn²⁺ (A = Ba/Sr; B = Mg/Zn) phosphors are prepared for a detailed study on the relationship between the luminescence performance and spatial structure and symmetry of the doping site of Mn²⁺. Due to the weak interaction between nearest B–B pairs, [BO₅] is defined as an isolated coordination polyhedron whose structure and symmetry directly influence the photoluminescence of Mn²⁺. The emission wavelength of Mn²⁺ is ∼620 nm when it occupies the triangular bipyramid [MgO₅] in BaMgP₂O₇. When Mn²⁺ occupies the quadrangular pyramid-typed [MgO₅] or [ZnO₅] in SrMgP₂O₇, SrZnP₂O₇, and BaZnP₂O₇, the emission wavelengths peak at ∼670 nm. We propose a conception of isolated coordination polyhedral confinement to clarify the luminescence performance of Mn²⁺ in the fivefold coordination configuration with different geometries, which has great theoretical research significance for designing inorganic phosphors.

论文链接：https://pubs.acs.org/doi/10.1021/acs.inorgchem.3c03238