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Explorations of New SHG Materials in Mercury Iodate Sulfate System
  • 作者
    Li, Yi-Lin; Ji, Meng-Ya; Hu, Chun-Li; Chen, Jin; Li, Bing-Xuan; Lin, Yuan; Mao, Jiang-Gao
  • 刊物名称
    CHEMISTRY-A EUROPEAN JOURNAL
  • 年、卷、文献号
    2022, 28, 0947-6539
  • 关键词
    Li, Yi-Lin; Ji, Meng-Ya; Hu, Chun-Li; Chen, Jin; Li, Bing-Xuan; Lin, Yuan; Mao, Jiang-Gao
  • 摘要
    Through systematic experiments, two novel mercury iodate sulfates, namely, Hg-2(IO3)(2)(SO4)(H2O) and Hg-2(IO3)(2)(SO4) were obtained. They crystallize in monoclinic space group C2 and C2/c, respectively. Hg-2(IO3)(2)(SO4)(H2O) exhibits the [Hg(IO3)](+) polar cationic layer inherited from Hg(IO3)(2) and the three-dimensional (3D) framework inherited from HgSO4. This enables Hg-2(IO3)(2)(SO4)(H2O) to generate a strong second harmonic generation (SHG) response of 6 times that of KH2PO4 (KDP). The structure of Hg-2(IO3)(2)(SO4) is very similar to that of Hg-2(IO3)(2)(SO4)(H2O), and they can be transformed into each other. Hg-2(IO3)(2)(SO4)(H2O) shows a large optical band gap of 3.98 eV and a high dehydration temperature of 250 degrees C. This study indicates that by reasonable design, the introduction of multiple functional groups into a compound may combine their advantages to achieve good overall optical performance.

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