ZnIO3(OH): a new layered noncentrosymmetric polar iodate – hydrothermal synthesis, crystal structure, and second-harmonic generating (SHG) properties
作者:Dong Woo Lee、Saet Byeol Kim、Kang Min Ok
DOI:10.1039/c2dt30947e
日期:——
A new noncentrosymmetric polar iodate material, ZnIO3(OH), has been hydrothermally synthesized as crystals and pure powders by using ZnO (or Zn(CH3CO2)2·2H2O), HIO3, and water. Single crystal X-ray diffraction was used to determine the crystal structure of the reported material. ZnIO3(OH) exhibits a layered structure that is composed of ZnO6 and IO3 polyhedra. Powder nonlinear optical (NLO) properties measurements on ZnIO3(OH) using 1064 nm radiation indicate the material has a second-harmonic generating (SHG) efficiency of approximately 20 times that of α-SiO2. Additional SHG measurements reveal that the material is not phase-matchable (type 1). Infrared spectroscopy, elemental analysis, and thermogravimetric analysis for the reported compound are also presented. Crystal data: ZnIO3(OH), monoclinic, space group Cc (no. 9) with a = 4.67670(10) Ã
, b = 11.2392(4) Ã
, c = 6.3308(2) Ã
, β = 90.019(2)°, and Z = 4.
利用 ZnO(或 Zn(CH3CO2)2Â-2H2O)、HIO3 和水,通过水热法合成了一种新的非中心对称极性碘酸盐材料 ZnIO3(OH),并得到了晶体和纯粉末。利用单晶 X 射线衍射测定了报告材料的晶体结构。ZnIO3(OH) 呈现出由 ZnO6 和 IO3 多面体组成的层状结构。使用 1064 纳米辐射对 ZnIO3(OH) 进行的粉末非线性光学(NLO)特性测量表明,该材料的二次谐波发生(SHG)效率约为δ-SiO2 的 20 倍。其他 SHG 测量结果表明,该材料不具有相匹配性(类型 1)。报告还介绍了该化合物的红外光谱、元素分析和热重分析。晶体数据:ZnIO3(OH),单斜,空间群 Cc(9 号),a = 4.67670(10) à ,b = 11.2392(4) à ,c = 6.3308(2) à ,δ = 90.019(2)° ,Z = 4。