Ruiyan Chen, Guanghui Chen, Yanping He* and Jian Zhang*

Cite this article: Chin. J. Struct. Chem. 2022, 41, 2201001-2201006  DOI: 10.14102/j.cnki.0254-5861.2021-0016

Publication date: January 13, 2022

Keywords: metal-organic cages, stepwise-assembly, alkaline-earth, structures, nonlinear optics

ABSTRACT

Recently, the tetrahedral Ti₄L₆ cage (L = embonate) has been applied as the starting material to realize coordination assembly with transition and rare-earth ornoble metal ions through a two-step reaction. In this work, by employing the Ti₄L₆ cages to assemble with alkaline-earth metal ions (such as Mg²⁺, Ca²⁺ and Ba²⁺) under different solvothermal conditions, a series of Ti₄L₆-based structures from simple cages to 1D chain, 2D layer and 3D framework have been synthesized and structurally characterized. In addition, thermal stability, phase purity, UV-vis absorption spectrum, the fluorescent and third-order nonlinear-optical properties are also investigated.