聚合物
共价键
堆积
化学
氢键
晶体工程
Crystal(编程语言)
单晶
热稳定性
多孔性
结晶学
化学工程
高分子化学
化学物理
分子
有机化学
计算机科学
工程类
程序设计语言
作者
Yi Yang,En Lin,Sa Wang,Ting Wang,Zhifang Wang,Zhenjie Zhang
摘要
The synthesis of single-crystal, one-dimensional (1D) polymers is of great importance but a formidable challenge. Herein, we report the synthesis of single-crystal 1D ladder polymers in solution by dynamic covalent chemistry. The three-dimensional electron diffraction technique was used to rigorously solve the structure of the crystalline polymers, unveiling that each polymer chain is connected by double covalent bridges and all polymer chains are packed in a staggered and interlaced manner by π–π stacking and hydrogen bonding interactions, making the crystalline polymers highly robust in both thermal and chemical stability. The synthesized single-crystal polymers possess permanent micropores and can efficiently remove CO2 from the C2H2/CO2 mixture to obtain high-purity C2H2, validated by dynamic breakthrough experiments. This work demonstrates the first example of constructing single-crystal 1D porous ladder polymers with double covalent bridges in solution for efficient C2H2/CO2 separation.
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