| Autor: |
Dong, Xuehua, Long, Ying, Huang, Ling, Cao, Liling, Gao, Daojiang, Bi, Jian, Zou, Guohong |
| Zdroj: |
Journal of Materials Chemistry C; 12/14/2022, Vol. 10 Issue 46, p17577-17582, 6p |
| Abstrakt: |
Herein, a novel antimony fluoroberyllate, KSb(BeF3)F3, exhibiting a distinctive 1D [BeF3]∞− polyanion chain, has been successfully synthesized using a totally fluorine strategy. Innovatively, by introducing a Be–F bond with a large electronegativity difference and completely eliminating the suspended oxygen atoms in the structure, KSb(BeF3)F3 exhibits a large optical bandgap (5.3 eV). Furthermore, KSb(BeF3)F3 shows a large birefringence (0.11@546 nm), larger than that of other reported alkali/alkaline earth metal oxysalts with tetrahedral units only, showing that the reported compound is a potential practical short-wave ultraviolet birefringent material. First principles theoretical studies reveal that the excellent properties originate from the cooperation of the 1D infinite [BeF3]∞− polyanion chains and SbF6 octahedra. The totally fluorine strategy we adopted not only resulted in a novel structure, which facilitated the diversification of structural types of the antimony-based materials, but also achieved the bandgap tuning of the materials. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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