Homochiral Metal–Organic Framework with Intrinsic Chiral Topology and Helical Channels

Presented here is an unusual microporous metal–organic framework (FIR-30) integrating helical channels, intrinsical chirality, and permanent porosity. The structure of FIR-30 containing three types of cages has two interpenetrating helical channel systems with opposite handedness, which can be considered a surface with the same topology as gyroid, and the generation of chirality is related with the intrinsically chiral topology of FIR-30. The results provide new insight toward the construction of chiral MOFs with helical channels.本文报道了一种兼具螺旋通道、固有手性与永久孔隙性的非常规微孔金属有机框架（metal–organic framework, MOF）FIR-30。该框架包含三类笼状结构，拥有两个手性相反的互穿螺旋通道体系，其拓扑结构与gyroid（gyroid）一致；该框架的手性产生与其自身的固有手性拓扑结构密切相关。此项研究结果为构建含螺旋通道的手性金属有机框架提供了全新的研究视角。