State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002 (P. R. China) http://mjg.fjirsm.ac.cn/
Angew Chem Int Ed Engl. 2015 Mar 16;54(12):3679-82. doi: 10.1002/anie.201412344. Epub 2015 Jan 28.
A new SHG material, namely, Pb2(BO3)(NO3), which contains parallel π-conjugated nitrate and borate anions, was obtained through a facile hydrothermal reaction by using Pb(NO3)2 and Mg(BO2)2⋅H2O as starting materials. Its structure contains honeycomb [Pb2(BO3)]∞ layers with noncoordination NO3 anions located at the interlayer space. Pb2(BO3)(NO3) shows a remarkable strong SHG response of approximately 9.0 times that of potassium dihydrogen phosphate (KDP) and the material is also phase-matchable. The large SHG coefficient of Pb2(BO3)(NO3) arises from the synergistic effect of the stereoactive lone pairs on Pb(2+) cations and parallel alignment of π-conjugated BO3 and NO3 units. Based on its unique properties, Pb2(BO3)(NO3) may have great potential as a high performance NLO material in photonic applications.
一种新的 SHG 材料，即 Pb2(BO3)(NO3)，它包含平行的π共轭硝酸盐和硼酸盐阴离子，是通过使用 Pb(NO3)2 和 Mg(BO2)2⋅H2O 作为起始材料，通过简单的水热反应获得的。它的结构包含蜂窝状[Pb2(BO3)]∞层，非配位NO3阴离子位于层间空间。Pb2(BO3)(NO3)表现出显著的强 SHG 响应，大约是磷酸二氢钾 (KDP) 的 9.0 倍，并且该材料也是相匹配的。Pb2(BO3)(NO3)的大 SHG 系数源于 Pb(2+)阳离子的立体活性孤对电子和π共轭 BO3 和 NO3 单元的平行排列的协同效应。基于其独特的性质，Pb2(BO3)(NO3)在光子应用中可能作为高性能 NLO 材料具有很大的潜力。
