Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P. R. China.
University of the Chinese Academy of Sciences, Beijing, 100039, P. R. China.
Angew Chem Int Ed Engl. 2017 Feb 13;56(8):2151-2155. doi: 10.1002/anie.201611770. Epub 2017 Jan 16.
The first metal iodate fluoride, Bi(IO )F , with a strong second harmonic generation (SHG) effect has been prepared. Bi(IO )F crystallizes in the polar space group C2 and features a three-dimensional [BiF ] cationic framework with IO groups capping the inner walls of the one-dimensional tunnels. This [BiF ] cationic framework acts as a template for the assembly of the polar IO units in a favorable superposed fashion, which leads to the polar structure of the material. Bi(IO )F 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 KH PO (KDP) under 1064 nm laser radiation and the same as that of KTiOPO (KTP) under 2.05 μm laser radiation. Preliminary investigations indicate that Bi(IO )F is a promising nonlinear optical material in the visible and mid-IR region.
首例金属碘酸氟化物 Bi(IO )F 的成功制备，具有较强的二次谐波产生（SHG）效应。Bi(IO )F 属于极性空间群 C2，呈现出三维[BiF ]阳离子骨架，碘酸根位于一维隧道的内壁。这种[BiF ]阳离子骨架充当了极性 IO 基团以有利的重叠方式组装的模板，导致材料呈现出极性结构。Bi(IO )F 具有相当宽的透过率窗口（0.3-11μm），并表现出非常强的 SHG 响应，在 1064nm 激光辐射下，其响应强度大约是 KH PO（KDP）的 11.5 倍，在 2.05μm 激光辐射下，其响应强度与 KTiOPO（KTP）相同。初步研究表明，Bi(IO )F 是一种在可见光和中红外区域有前景的非线性光学材料。
