Department of Materials Physics, Zhejiang Normal University, Jinhua, Zhejiang 321004, People's Republic of China.
Inorg Chem. 2013 Aug 19;52(16):9590-6. doi: 10.1021/ic401299h. Epub 2013 Jul 30.
Uniform-assembled lanthanide borate nanocrystals have been synthesized via a facile self-assembly process under hydrothermal conditions. All of the prepared lanthanide borate assemblies exhibit a spindle-like profile despite the fact that they belong to different crystal systems and have different formulas for composition. Each assembly is composed of small nanocrystals that are tightly attached along with their lateral surfaces. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy have been used to characterize the structure and morphology of these samples. The mechanism responsible for the growth and assembly of these lanthanide borate assemblies is also demonstrated. After Eu(3+) and/or Tb(3+) ions are doped inside these assemblies, strong and multicolor emissions can be realized. Notably, tunable emission and a warm-white color can be achieved in the Eu(3+)/Tb(3+) codoped samples.
通过水热条件下的简单自组装过程，合成了均匀组装的镧系硼酸盐纳米晶体。尽管这些组装体属于不同的晶体系统，并且具有不同的组成配方，但所有制备的镧系硼酸盐组装体都呈现出纺锤状的形态。每个组装体由紧密附着在其外表面上的小纳米晶体组成。X 射线衍射、扫描电子显微镜和透射电子显微镜用于表征这些样品的结构和形态。还展示了这些镧系硼酸盐组装体的生长和组装的机制。在这些组装体内部掺杂 Eu(3+)和/或 Tb(3+)离子后，可以实现强的多色发射。值得注意的是，Eu(3+)/Tb(3+)共掺杂样品可以实现可调发射和暖白色。
