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K 2 Sb(P 2 O 7 )F: Cairo Pentagonal Layer with Bifunctional Genes Reveal Optical Performance
Author(s) -
Deng Yalan,
Huang Ling,
Dong Xuehua,
Wang Lei,
Ok Kang Min,
Zeng Hongmei,
Lin Zhien,
Zou Guohong
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202009441
Subject(s) - bifunctional , antimony , crystallography , birefringence , crystal structure , materials science , layer (electronics) , chemistry , nanotechnology , optics , physics , inorganic chemistry , catalysis , biochemistry
Discovering new functional genes, designing perfect crystal structures, and developing high‐performance materials are the goals being pursued by scientists. Herein, the first antimony pyrophosphate, K 2 Sb(P 2 O 7 )F, possessing an optimal layered structure, is reported, where the perfect structural arrangement induces excellent optical properties. K 2 Sb(P 2 O 7 )F not only displays a sharply enhanced birefringence (0.157@546 nm) compared to the existing phosphate optical materials, but also exhibits a strong second‐harmonic generation response (4.0×KDP). Remarkably, a new bifunctional gene, the square‐pyramidal SbO 4 F group, was discovered, and a unique two‐dimensional arrangement of Cairo pentagonal tiling units was observed in inorganic compounds for the first time.