Peroxide-Assisted Solvate Engineering Enables Record-High Birefringence in a Solar-Blind Transparent Crystal
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Developing birefringent materials that simultaneously exhibit short ultraviolet (UV) cutoff edges and large birefringence is highly desirable but remains challenging. Here, we report a peroxide-containing solvate crystal, 4HP·H2O2 (4HPO2, 4HP = 4-hydroxypyrid... ...