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Synthesis of a Copper 1,3,5-Triamino-2,4,6-benzenetriol Metal–Organic Framework
Journal of the American Chemical Society ( IF 15.0 ) Pub Date : 2020-10-06 , DOI: 10.1021/jacs.0c02389
Yi Jiang 1 , Inseon Oh , Se Hun Joo , Yu-Seong Seo 2 , Sun Hwa Lee 1 , Won Kyung Seong 1 , Yu Jin Kim , Jungseek Hwang 2 , Sang Kyu Kwak , Jung-Woo Yoo , Rodney S. Ruoff 1
Affiliation  

We report the synthesis and characterization of a two-dimensional (2D) MX2Y2-type (M = metal, X, Y = N, S, O, and X ≠ Y) copper 1,3,5-triamino-2,4,6-benzenetriol metal-organic framework (Cu3(TABTO)2-MOF). The role of oxygen in the synthesis of this MOF was investigated. Copper metal is formed along with the MOF when the synthesis is done in argon as suggested by XRD. When the reaction was exposed to air with vigorous stirring, copper metal was not observed by XRD. However, if there is no stirring, then copper metal is formed, and we learned that this is because oxygen was not allowed to enter the solvent due to the formation of a MOF film at the air/water interface. For the sample synthesized in argon (Cu3(TABTO)2-Ar), an insulating Cu3(TABTO)2-Ar pellet (σ < 10-10 S cm-1) became a metallic conductor with an electrical conductivity of 0.78 S cm-1 at 300 K after exposure to iodine vapor. This work provides further insights into the role of oxygen in the synthesis of redox-active ligand-based MOFs, expands the family of 2D redox-active ligand-based electrically conductive MOFs, and offers more opportunities in sensing, photocatalytic, electronic, and energy-related applications.

中文翻译:

铜 1,3,5-Triamino-2,4,6-benzotriol 金属-有机骨架的合成

我们报告了二维 (2D) MX2Y2 型(M = 金属、X、Y = N、S、O 和 X ≠ Y)铜 1,3,5-triamino-2,4 的合成和表征, 6-苯三醇金属有机骨架(Cu3(TABTO)2-MOF)。研究了氧在该 MOF 合成中的作用。当合成在氩气中完成时,铜金属与 MOF 一起形成,如 XRD 所示。当反应在剧烈搅拌下暴露于空气中时,XRD 未观察到铜金属。但是,如果没有搅拌,就会形成铜金属,我们了解到这是因为在空气/水界面形成了 MOF 膜,因此不允许氧气进入溶剂。对于在氩气中合成的样品 (Cu3(TABTO)2-Ar),绝缘的 Cu3(TABTO)2-Ar 颗粒(σ < 10-10 S cm-1)成为导电率为 0 的金属导体。暴露于碘蒸气后在 300 K 下为 78 S cm-1。这项工作提供了对氧在合成氧化还原活性配体基 MOF 中的作用的进一步见解,扩展了基于 2D 氧化还原活性配体的导电 MOFs 家族,并为传感、光催化、电子和能源提供了更多机会- 相关的应用程序。
更新日期:2020-10-06
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