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在共价有机框架中将伊胺转化为氧醇和醇结合物

Peter J Waller^1,2,3, Yasmeen S AlFaraj^1,2, Christian S Diercks^1,2,3

¹Department of Chemistry , University of California-Berkeley , Berkeley , California 94720 , United States.

Journal of the American Chemical Society

|July 13, 2018

概括

研究人员开发了一种简单的方法,通过以 imine 结合的前体与 thiazole 和 oxazole 结合,创建稳定的,多孔的共价有机框架 (COF). 这种方法克服了结晶某些COF结构的挑战.

科学领域:

材料科学
有机化学
聚合物化学

背景情况:

共价有机框架 (COF) 是具有多种应用的晶体多孔聚合物.
由于微观可逆性有限,合成具有特异性链接的COF,如醇和醇,可能具有挑战性.
胺结合的COF是常见的前体,但可能缺乏长期的化学稳定性.

研究的目的:

开发一种简单高效的合成 thiazole 和 oxazole 相关的共价有机框架 (COF).
研究新合成的醇结合COF的结构性,晶体性和多孔性.
评估醇结合的COF与它们的胺结合前体的化学稳定性.

主要方法:

通过链接替代和氧化循环转换一个因胺结合的COF (ILCOF-1).
使用红外光谱,固态NMR光谱和粉末X射线衍射进行了表征.
通过吸附实验进行透性评估.

主要成果:

从一种 imine-linked前体成功合成了两个同结构的结COF (thiazole和oxazole链接).
证实了转换的完整性和得到的COF的结晶性.
证明与以胺结合的原材料相比,以醇结合的COF保留了多孔性,并表现出更高的化学稳定性.

结论:

开发的方法可以很容易地获得与 thiazole 和 oxazole 相关的 COF.
这种方法可以合成通常难以结晶的COF.
由此产生的醇结合COF提供了更好的化学稳定性,并保持了多孔性,扩大了它们的潜在应用.

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