Designed synthesis of large-pore crystalline polyimide covalent organic frameworks
Designed synthesis of large-pore crystalline polyimide covalent organic frameworks
复制标题
大孔结晶聚酰亚胺共价有机骨架的设计合成
DOI：
10.1038/ncomms5503
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发表时间：
2014-07-01
影响因子：
16.6
通讯作者：
Yan, Yushan
中科院分区：
文献类型：
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作者：
Fang, Qianrong;Zhuang, Zhongbin;Yan, Yushan
共价有机骨架（COF）是一类新兴的多孔结晶聚合物，具有广泛的应用。它们目前仅通过少数化学反应合成，限制了新结构和性质的获得和利用。在这里，我们报告说，酰亚胺化反应可以用来制备一系列聚酰亚胺（PI）COF，其孔径高达42 × 53 μ 2，这是迄今为止报道的最大孔径之一，表面积高达2,346 m2 g −1，这超过了所有无定形多孔PI，是二维COF中报道的最高表面积之一。这些PI COF在高达530 °C下是热稳定的。我们还组装了一个大的染料分子到一个COF，显示敏感的温度依赖性发光特性。
Covalent organic frameworks (COFs) are an emerging class of porous crystalline polymers with a wide variety of applications. They are currently synthesized through only a few chemical reactions, limiting the access and exploitation of new structures and properties. Here we report that the imidization reaction can be used to prepare a series of polyimide (PI) COFs with pore size as large as 42 × 53 Å2, which is among the largest reported to date, and surface area as high as 2,346 m2g−1, which exceeds that of all amorphous porous PIs and is among the highest reported for two-dimensional COFs. These PI COFs are thermally stable up to 530 °C. We also assemble a large dye molecule into a COF that shows sensitive temperature-dependent luminescent properties.