Two co-crystalline compounds containing telluric acid and iodate,namely AIO_(3)·H_(6)TeO_(6)(A=Rb^(+),NH_(4)^(+)),were investigated as potential nonlinear optical materials.They crystallize into isostructural and...Two co-crystalline compounds containing telluric acid and iodate,namely AIO_(3)·H_(6)TeO_(6)(A=Rb^(+),NH_(4)^(+)),were investigated as potential nonlinear optical materials.They crystallize into isostructural and consist of isolated[IO_(3)]group and[H_(6)TeO_(6)]molecule linked by hydrogen bonds and charge interactions of Rb^(+)/NH_(4)^(+).They show phase-matching second harmonic generation responses with moderate intensity of 1.2×KDP(Rb^(+))and 1.1×KDP(NH_(4)^(+)).They also possess large optical band gaps over 4.25 eV and can be easily grown from aqueous so-lutions.The local dipole moment calculations based on the structures of AIO_(3)·H_(6)TeO_(6)(A=K+,Rb^(+),NH_(4)^(+))series of compounds indicate that the change of A+cation in their structural frame causes a slight change in the arrangement directions of[IO_(3)]and[Te(OH)_(6)]groups,and further induces their SHG responses of different in-tensities at the macroscopic level.展开更多
基金support from the National Natural Science Foundation of China(Grant No.22105046)the Natural Science Foundation of Guangxi Province(No.2022GXNSFBA035484)the Shanghai Pujiang Program(20PJ1412900).
文摘Two co-crystalline compounds containing telluric acid and iodate,namely AIO_(3)·H_(6)TeO_(6)(A=Rb^(+),NH_(4)^(+)),were investigated as potential nonlinear optical materials.They crystallize into isostructural and consist of isolated[IO_(3)]group and[H_(6)TeO_(6)]molecule linked by hydrogen bonds and charge interactions of Rb^(+)/NH_(4)^(+).They show phase-matching second harmonic generation responses with moderate intensity of 1.2×KDP(Rb^(+))and 1.1×KDP(NH_(4)^(+)).They also possess large optical band gaps over 4.25 eV and can be easily grown from aqueous so-lutions.The local dipole moment calculations based on the structures of AIO_(3)·H_(6)TeO_(6)(A=K+,Rb^(+),NH_(4)^(+))series of compounds indicate that the change of A+cation in their structural frame causes a slight change in the arrangement directions of[IO_(3)]and[Te(OH)_(6)]groups,and further induces their SHG responses of different in-tensities at the macroscopic level.
