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Role of fluorine on the structure and second-harmonic-generation property of inorganic selenites and tellurites

期刊

CHEMICAL COMMUNICATIONS
卷 57, 期 94, 页码 12575-12586

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ROYAL SOC CHEMISTRY
DOI: 10.1039/d1cc04818j

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  1. National Natural Science Foundation of China [91963105, 21773244, 21875248, 21921001, 22031009]

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The article discusses how fluorine can replace oxygen ligands in functional groups and use the differences to enhance noncentrosymmetric structures and SHG materials. It also presents recent developments in fluoride selenite and tellurite SHG materials, as well as future prospects.
Fluorine, as the most electronegative element, can replace the oxygen ligands of functional groups under given conditions. These fluoride groups are more or less different from the pure oxide groups in composition, symmetry, polarizability, transmittancy, etc. The rational use of these differences is expected to improve the probability of noncentrosymmetric structures and the comprehensive performance of second-harmonic-generation (SHG) materials. In this feature article, we introduce the recent developments in fluoride selenite and tellurite SHG materials together with highlighting our contributions, including Se(iv) and Te(iv) compounds with (i) d(0) transition metal oxyfluoride octahedron, (ii) IIIA metal oxyfluoride octahedron, (iii) fluoride lone pair cation polyhedron, and (iv) other fluoride polyhedron. The future perspectives of fluoride selenite and tellurite SHG materials are also discussed.

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