Selective CO<sub>2</sub> Capture and High Proton Conductivity of a Functional Star-of-David Catenane Metal-Organic Framework.

Huang, You-Gui; Wu, Shu-Qi; Deng, Wei-Hua; Xu, Gang; Hu, Fa-Lu; Hill, Jonathan P; Wei, Wei; Su, Sheng-Qun et al. · Adv Mater · 2017

basic_science · Level V

Where this comes from

Abstract

Network structures based on Star-of-David catenanes with multiple superior functionalities have been so far elusive, although numerous topologically interesting networks are synthesized. Here, a metal-organic framework featuring fused Star-of-David catenanes is reported. Two triangular metallacycles with opposite handedness are triply intertwined forming a Star-of-David catenane. Each catenane fuses with its six neighbors to generate a porous twofold intercatenated gyroid framework. The compound possesses exceptional stability and exhibits multiple functionalities including highly selective CO<sub>2</sub> capture, high proton conductivity, and coexistence of slow magnetic relaxation and long-range ordering.