Bio-inspired creation of heterogeneous reaction vessels via polymerization of supramolecular ion pair

Ke Dong, Qi Sun (), Yongquan Tang, Chuan Shan, Briana Aguila, Sai Wang, Xiangju Meng, Shengqian Ma () and Feng-Shou Xiao ()
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Ke Dong: Zhejiang University
Qi Sun: Zhejiang University
Yongquan Tang: Zhejiang University
Chuan Shan: University of South Florida
Briana Aguila: University of South Florida
Sai Wang: Zhejiang University
Xiangju Meng: Zhejiang University
Shengqian Ma: University of South Florida
Feng-Shou Xiao: Zhejiang University

Nature Communications, 2019, vol. 10, issue 1, 1-8

Abstract: Abstract Precise control of the outer-sphere environment around the active sites of heterogeneous catalysts to modulate the catalytic outcomes has long been a challenge. Here, we demonstrate how this can be fulfilled by encapsulating catalytic components into supramolecular capsules, used as building blocks for materials synthesis, whereby the microenvironment of each active site is tuned by the assembled wall. Specifically, using a cationic template equipped with a polymerizable functionality, anionic ligands can be encapsulated by ion pair-directed supramolecular assembly, followed by construction into porous frameworks. The hydrophilic ionic wall enables reactions to be achieved in water that usually requires organic solvents and also facilitates the enrichment of the substrate into the hydrophobic pocket, leading to superior catalytic performances as demonstrated by the industrially relevant hydroformylation. Remarkably, the formation of the supramolecular assembly and catalyst encapsulation further engenders reaction selectivity, which reaches an even greater extent after construction of the porous framework.

Date: 2019
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DOI: 10.1038/s41467-019-11080-5

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