非线性光学(NLO)晶体材料在现代激光科学与技术中占有重要地位。BO_3平面基元作为优秀的非线性光学构筑基员被用来设计和合成了系列优秀的非线性光学晶体材料,NO_3因其共轭平面结构也被公认为是构筑NLO材料的理想结构单元之一。然而,硝酸盐因非常容易溶于水,使得发展该类化合物作为NLO晶体材料遇到瓶颈。 Nonlinear optical (NLO) crystal materials play an important role in modern laser science and technology. BO_3 planar primitives are used as excellent non-linear optical building blocks to design and synthesize a series of excellent nonlinear optical crystal materials. Because of their conjugate planar structure, NO_3 is also recognized as one of the ideal structural units for constructing NLO materials . However, nitrate is very soluble in water, which makes it a bottleneck to develop this kind of compound as an NLO crystal material.