Abstract Synthesis of conformal coatings of MOFs, especially water stable ones, on different surfaces is of paramount interest due to their potential applications including electrocatalysis, sensing, and separation. Despite previous efforts that resulted in successful deposition of thin-films of MOFs on flat surfaces, a rapid, low cost, and atom-efficient synthesis of such thin-films is still challenging. Herein we report a flash synthesis to produce conformal coatings of the water-stable UiO-66-NH2 on different flat or patterned surfaces, including Si and Au-coated Si wafers, glass slides, TLC silica plates, carbon-coated and FTO-coated electrodes. The flash synthesis presented herein is accomplished within ten minutes reaction time, utilizing minimal amounts of solvent and reagents, and thus is a greener synthesis to attain conformal coatings of such MOF on solid surfaces. The versatility of the approach is demonstrated by successful conformal coatings of the UiO-66-NH2 on Si, Au, glass, silica, as well as carbon surfaces, all achieved through drop-casting on the respective substrate at 100 °C for 10 min. The utility of such thin layer coating of microporous solids in supercapacitor applications, thin layer chromatography, as well as detection of heavy metal ions in aqueous solutions is also demonstrated.

中文翻译：

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非改性表面上 Zr 基金属有机框架 (UiO-66-NH2) 共形单片涂层的快速合成：在薄膜电极系统中的应用

摘要 MOFs 共形涂层的合成，尤其是水稳定性涂层，在不同表面上的合成是最重要的，因为它们的潜在应用包括电催化、传感和分离。尽管之前的努力导致在平坦表面上成功沉积 MOF 薄膜，但这种薄膜的快速、低成本和原子效率合成仍然具有挑战性。在此，我们报告了一种快速合成，以在不同的平面或图案表面上生产水稳定的 UiO-66-NH2 的保形涂层，包括 Si 和 Au 涂层的 Si 晶片、载玻片、TLC 硅胶板、碳涂层和 FTO 涂层电极。本文提出的快速合成在十分钟的反应时间内完成，使用最少量的溶剂和试剂，因此是一种更环保的合成方法，可以在固体表面上获得这种 MOF 的保形涂层。UiO-66-NH2 在 Si、Au、玻璃、二氧化硅以及碳表面上的成功保形涂层证明了该方法的多功能性，所有这些都是通过在 100°C 下在相应的基板上滴铸 10 分钟来实现的. 还证明了这种微孔固体薄层涂层在超级电容器应用、薄层色谱以及水溶液中重金属离子检测中的效用。