Hydrothermal Synthesis of New Iodates Ln2(IO3)3(IO4) (Ln = La, Nd, Pr) Containing the Tetraoxoiodate(V) Anion: Creation of Luminescence Properties by Doping with Eu, Dy, and Tb

We report on the detailed structural analysis and luminescence properties of novel iodates Ln(2)(IO3)(3)(IO4) (Ln = La, Nd, Pr) obtained successfully via mild hydrothermal synthesis. The structures were determined by single-crystal X-ray diffraction, and the phase purity of the samples was established by powder X-ray diffraction. Ln(2)(IO3)(3)(IO4) crystallizes in the orthorhombic crystal system adopting the Pbca space group. The complex structures contain the rare [IO4](3-) units. The band gaps of the materials were determined from UV-vis data, and optical band gaps were estimated to be 3.0 and 3.4 eV for La-2(IO3)(3)(IO4) and Nd-2(IO3)(3)(IO4), respectively. La-2(IO3)(3)(IO4) was used as a host matrix for Eu, Tb, and Dy doping to introduce luminescence.

Automated summary

The detailed structural analysis and luminescence properties of novel iodates Ln(2)(IO3)(3)(IO4) were successfully obtained via mild hydrothermal synthesis. The structures were determined by single-crystal X-ray diffraction, with the band gaps of La-2(IO3)(3)(IO4) and Nd-2(IO3)(3)(IO4) estimated to be 3.0 and 3.4 eV. La-2(IO3)(3)(IO4) was used as a host matrix for Eu, Tb, and Dy doping to introduce luminescence.