Conversion of amorphous polymer networks to covalent organic frameworks under ionothermal conditions: a facile synthesis route for covalent triazine frameworks
Conversion of amorphous polymer networks to covalent organic frameworks under ionothermal conditions: a facile synthesis route for covalent triazine frameworks
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DOI：
10.1039/c5ta07408h
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发表时间：
2015-01-01
影响因子：
11.9
通讯作者：
Thomas, Arne
中科院分区：
文献类型：
--
作者：
Kuecken, Sophie;Schmidt, Johannes;Thomas, Arne
在离子交换条件下，无定形、无孔聚合物网络转化为有序、微孔共价有机框架。无定形聚合物网络通过使用强布朗斯台德酸的腈单体的三聚来制备。在第二步中，在离子交换条件下，即在熔融氯化锌中，将聚合物网络转化为多孔共价三嗪骨架（CTF）。这种两步法在很大程度上促进了CTF的合成，因为聚合物前体的应用避免了小的有机化合物在电离过程的高温下的早期蒸发，因此不必使用抽真空和密封的石英安瓿，这使得CTF合成更容易、更安全和可扩展。
The conversion of an amorphous, non-porous polymer network into an ordered, microporous covalent organic framework under ionothermal conditions is presented. The amorphous polymer network is prepared by trimerization of carbonitrile monomers using strong Broensted acids. In a second step the polymer network is converted into a porous covalent triazine framework (CTF) under ionothermal conditions, i.e. in molten zinc chloride. This two-step process largely facilitates the synthesis of CTFs as the application of a polymeric precursor avoids early evaporation of small organic compounds at the high temperatures of the ionothermal process and therefore no evacuated and sealed quartz ampoules have to be used, which makes the CTF synthesis easier, safer and scalable.