Sophisticated Design of Covalent Organic Frameworks with Controllable Bimetallic Docking for a Cascade Reaction
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- 作者：Dr. Wenguang Leng ; Yongsheng Peng ; Jianqiang Zhang ; Dr. Hui Lu ; Dr. Xiao Feng ; Dr. Rile Ge ; Dr. Bin Dong ; Prof. Bo Wang ; Prof. Xiangping Hu and Prof. Yanan Gao
- 刊名：Chemistry - A European Journal
- 出版年：2016
- 出版时间：June 27, 2016
- 年：2016
- 卷：22
- 期：27
- 页码：9087-9091
- 全文大小：2211K
- ISSN：1521-3765
文摘
Precise control of the number and position of the catalytic metal ions in heterogeneous catalysts remains a big challenge. Here we synthesized a series of two-dimensional (2D) covalent organic frameworks (COFs) containing two different types of nitrogen ligands, namely imine and bipyridine, with controllable contents. For the first time, the selective coordination of the two nitrogen ligands of the 2D COFs to two different metal complexes, chloro(1,5-cyclooctadiene)rhodium(I) (Rh(COD)Cl) and palladium(II) acetate (Pd(OAc)2), has been realized using a programmed synthetic procedure. The bimetallically docked COFs showed excellent catalytic activity in a one-pot addition–oxidation cascade reaction. The high surface area, controllable metal-loading content, and predesigned active sites make them ideal candidates for their use as heterogeneous catalysts in a wide range of chemical reactions.