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Electrochemically Assisted Self-Assembly Technique for the Fabrication of Mesoporous Metal–Organic Framework Thin Films: Composition of 3D Hexagonally Packed Crystals with 2D Honeycomb-like Mesopores
Journal of the American Chemical Society ( IF 15.0 ) Pub Date : 2017-03-24 , DOI: 10.1021/jacs.6b12564
Saber Alizadeh 1 , Davood Nematollahi 1
Affiliation  

In this work, we introduce a novel and general strategy for the environmentally friendly fabrication of mesoporous metal-organic framework (mMOF) thin films via the electrochemically assisted self-assembly (EASA) technique. Implementation of this procedure as a one-step, additive-free, and versatile protocol leads to the in situ simultaneous synthesis and deposition of mesoporous architectures of MOFs at room temperature under green conditions without the need for any base, pretreatment, or chemical modification of the underlying surface. Our procedure provides a controllable method for the synthesis of mMOF thin films (modified electrodes) consisting of hollow three-dimensional hexagonally packed crystals with two-dimensional honeycomb-like mesopores in the walls of the cavities, which grow perpendicularly onto any of the conducting surface. The resulting modified electrodes show enhanced electron transfer properties and better mass transfer performance along with the appropriate signal suitable for electrochemical sensing applications. This work can be a breakthrough and provide a new perspective for the modification and functionalization of the surface with any type of mMOF by the electrochemically driven cooperative (soft-templating) mechanism.

中文翻译:

用于制备介孔金属-有机骨架薄膜的电化学辅助自组装技术:具有 2D 蜂窝状介孔的 3D 六边形堆积晶体的组成

在这项工作中,我们介绍了一种通过电化学辅助自组装 (EASA) 技术环保地制造介孔金属有机骨架 (mMOF) 薄膜的新型通用策略。将该过程作为一步、无添加剂和通用的协议实施,可在室温下在绿色条件下原位同步合成和沉积 MOF 的介孔结构,无需任何碱、预处理或化学修饰下表面。我们的程序提供了一种合成 mMOF 薄膜(改性电极)的可控方法,该薄膜由空心三维六边形填充晶体组成,腔壁中具有二维蜂窝状介孔,垂直生长在任何导电表面上. 所得修饰电极显示出增强的电子转移特性和更好的传质性能,以及适合电化学传感应用的适当信号。这项工作可以是一个突破,并为通过电化学驱动的协同(软模板)机制用任何类型的 mMOF 对表面进行改性和功能化提供了新的视角。
更新日期:2017-03-24
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