Layered Perovskite-like Nitrate Cs 2 Pb(NO 3 ) 2 Br 2 as a Multifunctional Optical Material.
Ying LongXuehua DongHongmei ZengZhi'en LinGuo-Hong ZouPublished in: Inorganic chemistry (2022)
A novel alkali metal lead halide nitrate, Cs 2 Pb(NO 3 ) 2 Br 2 , has been successfully synthesized via a hydrothermal method. Interestingly, the title compound features a distinctive Ruddlesden-Popper perovskite-like layered structure, which induces the outstanding multifunctional optical properties, including a large birefringence (0.147@546 nm) and broad light-orange emission. Detailed structural analysis and theoretical calculations revealed that the large birefringence originates from the p-π interaction between the Pb 2+ cations and NO 3 groups and that the excellent luminescence properties derive from the distortion of PbO 4 Br 4 polyhedra. This work not only enriches the variant structure types of layered perovskites but also guides the further exploration of all-inorganic multifunctional optical materials.
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