Data from: Phosphoric acid loaded azo (-N=N-) based covalent organic framework for proton conduction

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Two new chemically stable functional crystalline covalent organic frameworkds (COFs) (Tp-Azo and Tp-Stb) were synthesized using the Schiff base reaction between triformylphloroglucinol (Tp) and 4,4-azodianiline (Azo) or 4,4-diaminostilbene (Stb), respectively. Both COFs show the expected keto-enamine form, and high stability toward boiling water, strong acidic, and basic media. H3PO4 doping in Tp-Azo leads to immobilization of the acid within the porous framework, which facilitates proton conduction in both the hydrous (O= 9.9 × 10-4 S cm -1) and anhydrous state (O= 6.7 × 10-5 S cm -1). This report constitutes the first emergence of COFs as proton conducting materials.

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本研究通过三酰基间苯三酚（triformylphloroglucinol, Tp）分别与4,4-偶氮二苯胺（4,4-azodianiline, Azo）或4,4-二氨基二苯乙烯（4,4-diaminostilbene, Stb）之间的席夫碱反应，合成了两种化学稳定的功能性结晶共价有机框架（covalent organic frameworks, COFs）：Tp-Azo与Tp-Stb。两种COFs均呈现预期的酮-烯胺构型，且在沸水、强酸性及强碱性介质中均表现出优异的稳定性。对Tp-Azo进行磷酸（H3PO4）掺杂后，酸分子被固定于多孔框架内部，可促进其在水合状态（电导率σ= 9.9 × 10^-4 S·cm^-1）与无水状态（电导率σ= 6.7 × 10^-5 S·cm^-1）下的质子传导行为。本研究首次实现了共价有机框架作为质子传导材料的应用。