超分子配位化学研究所
Institute of Supramolecular Coordination Chemistry
TOP
学术报告
当前位置:
Turn-On Circularly Polarized Luminescence in Metal–Organic Frameworks


 Xue-Zhi Wang, Meng-Ying Sun, Zhijin Huang, Mo Xie, Ruishan Huang, Huihui Lu, Zujin Zhao, Xiao-Ping Zhou,* and Dan Li**

 

The fabrication of circularly polarized luminescence (CPL) active materials by self-assembly is still in its challenge. In this work, a family of homochiral metal–organic frameworks (MOFs) and metal–organic cages (MOCs) are constructed by solvothermal subcomponent self-assembly. These MOFs feature an eta topology with trifold helical chains, while the MOCs adopt a cubic cage structure. The chiral ligands show two distinct types of conformations: opened” and “closed” in MOFs and MOCs, respectively. Although homochiral MOFs and MOCs show similar spectra of circular dichroism and photoluminescence with similar quantum yields and lifetimes, the MOFs yield clear CPL signals and the CPL of MOCs are silent. The turn-on CPL in MOFs achieved by tuning the conformation of ligands and controlling self-assembly provides a new approach for development of CPL-active MOF materials.

 

文章链接:Adv Optical Mater 2021 2002096.pdf