Bi(IO₃)F₂: The First Metal Iodate Fluoride with a Very Strong Second Harmonic Generation Effect

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• 作者：Fei-Fei Mao ; Dr. Chun-Li Hu ; Dr. Xiang Xu ; Dong Yan ; Dr. Bing-Ping Yang and Prof. Jiang-Gao Mao
• 刊名：Angewandte Chemie
• 出版年：2017
• 出版时间：February 13, 2017
• 年：2017
• 卷：129
• 期：8
• 页码：2183-2187
• 全文大小：2906K
• ISSN：1521-3757

文摘

The first metal iodate fluoride, Bi(IO₃)F₂, with a strong second harmonic generation (SHG) effect has been prepared. Bi(IO₃)F₂ crystallizes in the polar space group C2 and features a three-dimensional [BiF₂]⁺ cationic framework with IO₃ groups capping the inner walls of the one-dimensional tunnels. This [BiF₂]⁺ cationic framework acts as a template for the assembly of the polar IO₃ units in a favorable superposed fashion, which leads to the polar structure of the material. Bi(IO₃)F₂ displays a rather wide transmittance window (0.3–11 μm) and exhibits a very strong SHG response that is about 11.5 times larger than that of KH₂PO₄ (KDP) under 1064 nm laser radiation and the same as that of KTiOPO₄ (KTP) under 2.05 μm laser radiation. Preliminary investigations indicate that Bi(IO₃)F₂ is a promising nonlinear optical material in the visible and mid-IR region.