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Shape-Controlled Synthesis of Covalent Organic Frameworks Enabled by Polymerization-Induced Phase Separation
Small ( IF 13.0 ) Pub Date : 2022-12-20 , DOI: 10.1002/smll.202205501 Lin Zhu 1 , Yajiao Su 1 , Zhongshan Liu 1 , Yu Fang 1
Small ( IF 13.0 ) Pub Date : 2022-12-20 , DOI: 10.1002/smll.202205501 Lin Zhu 1 , Yajiao Su 1 , Zhongshan Liu 1 , Yu Fang 1
Affiliation
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The shape and morphology modulations of covalent organic frameworks (COFs) are both difficult, but are of significance to tackle to realize high-performance and practical applications. Here, a two-step method is reported that separates the phase separation and crystallization processes for the shape-controlled synthesis of COFs. The insight into the polymerization-induced phase separation (PIPS) allows for the flexible shaping of COFs into column, rod, film and others, as well as for constructing hierarchically porous structure. The as-synthesized COF monoliths are crack-free, no powder detaching, and show 214 MPa of compressive modulus. The resulting good permeability and mechanical flexibility enable COF films to apply for flow-through adsorption and extraction of pollutants at high flow rates. This work successfully resolves the contradiction between PIPS and crystallization, offering a general approach for scalable production of COFs with desired shapes, sizes, and morphologies.
中文翻译：
通过聚合诱导相分离实现共价有机骨架的形状控制合成
共价有机框架（COF）的形状和形态调制都是困难的，但对于实现高性能和实际应用具有重要意义。在这里，报道了一种两步法，该方法将 COF 的形状控制合成的相分离和结晶过程分开。对聚合诱导相分离 (PIPS) 的洞察允许将 COF 灵活地成型为柱状、棒状、薄膜等，以及构建分层多孔结构。合成后的 COF 整料无裂纹，无粉末脱落，压缩模量为 214 MPa。由此产生的良好渗透性和机械柔韧性使 COF 薄膜能够在高流速下应用于污染物的流通吸附和提取。
更新日期：2022-12-20
中文翻译：
通过聚合诱导相分离实现共价有机骨架的形状控制合成
共价有机框架（COF）的形状和形态调制都是困难的，但对于实现高性能和实际应用具有重要意义。在这里，报道了一种两步法，该方法将 COF 的形状控制合成的相分离和结晶过程分开。对聚合诱导相分离 (PIPS) 的洞察允许将 COF 灵活地成型为柱状、棒状、薄膜等，以及构建分层多孔结构。合成后的 COF 整料无裂纹，无粉末脱落，压缩模量为 214 MPa。由此产生的良好渗透性和机械柔韧性使 COF 薄膜能够在高流速下应用于污染物的流通吸附和提取。
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