High-Nuclear Alkynyl Cu(I) Cluster-Based Framework for Efficient Xe/Kr Separation
Xi Fan, Kexiu Zuo, Furong Yuan, Yunbin Li, Lü Li, Lin Si, Jiali Huang, Shengchang Xiang, Jiaqi Wang, Zhangjing Zhang
Abstract
MOFs based on high-nuclear clusters as building blocks are specifically attractive but generally unsuitable for efficient Xe/Kr selective separation. In this study, a rare high-nuclear alkynyl Cu 12 cluster-based framework with 1D microchannel ( Cu 12 ) has been successfully developed. Furthermore, the presence of rich tert -butyl and benzene groups within the channels of Cu 12 creates a significant differentiation in the adsorption and binding affinity for Xe and Kr, enabling Cu 12 to efficiently separate Xe from Kr. Significantly, Cu 12 not only presents the first coinage metal cluster-based framework for the challenging gas separation but also possesses the largest cluster core of MOFs reported to date for efficient Xe/Kr separation.