Coordination‐Driven Assembly of Metal–Organic Framework Coating for Catalytically Active Superhydrophobic Surface
Coordination‐Driven Assembly of Metal–Organic Framework Coating for Catalytically Active Superhydrophobic Surface
复制标题
DOI：
10.1002/admi.202001202
复制
发表时间：
2020-09
影响因子：
5.4
通讯作者：
Bo Yi;Y. Wong;Changshun Hou;Jianqiang Zhang;Zhengtao Xu;Xi Yao
中科院分区：
文献类型：
--
作者：
Bo Yi;Y. Wong;Changshun Hou;Jianqiang Zhang;Zhengtao Xu;Xi Yao
本文报道了一种超疏水催化活性金属有机骨架(MOF)纳米粒子与邻苯二酚功能化聚硅氧烷聚合物的配位组装。这种MOF涂层可以通过将MOF-聚合物前驱体浇注到不同的衬底上，采用不同的涂层技术来制备，例如喷涂、棒材涂层和浸渍涂层。邻苯二酚功能化聚合物不仅可以与MOF表面的开放金属中心配位，实现MOF纳米粒子的表面功能化和组装，而且还可以与铸造基材发生非共价相互作用，从而提高MOF涂层的附着力。由于保持了良好的孔隙率和表面疏水性，MOF涂层表现出超疏水性，并在室温下对Knovenagel缩合反应具有更好的催化活性。这种配位驱动的组装方法可以扩展到一系列MOF系统，用于制备面向各种应用的高功能复合材料。
Here, a superhydrophobic and catalytically active metal–organic framework (MOF) coating is reported by coordination‐driven assembly of MOF nanoparticles and a catechol‐functionalized polysiloxane polymer. This MOF coating can be fabricated by casting MOF‐polymer precursor onto diverse substrates with varied coating techniques, for example, spray coating, bar coating, and dip coating. The catechol‐functionalized polymer can not only coordinate to the open metal sites on MOF surface which enables the surface functionalization and assembly of MOF nanoparticles, but also allow non‐covalent interactions with casting substrates—thus improving the substrate adhesion of the MOF coating. With the well‐preserved porosity and surface hydrophobicity, the MOF coating demonstrates superhydrophobicity as well as improved catalytic activity toward the Knoevenagel condensation at room temperature. Such coordination‐driven assembly approach can be extended to a range of MOF systems for preparing highly functional composite materials toward various applications.