Issue 24, 2023

Tailoring stability, catalytic activity and selectivity of covalent metal–organic frameworks via steric modification of metal nodes

Abstract

Although many efforts have been made to tune catalytic performance via the modification of MOF nodes including metal exchange, defect creation and metal insertion, steric tuning of MOF nodes via ligand modification remains challenging and unexplored. Herein, we have successfully fabricated two two-dimensional (2D) Cu(I) cyclic trinuclear unit (Cu-CTU)-based MOFs with similar structures, denoted as JNM-1 and JNM-5. JNM-1 has less steric hindrance on copper open sites, while JNM-5 incorporates bulky groups enhancing steric hindrance and partial coverage on copper open sites. Due to the steric effect, JNM-5 exhibited much higher crystallinity, porosity and chemical stability, but lower catalytic activity for hydroboration reactions than JNM-1. Interestingly, JNM-5 delivered much higher substrate selectivity and chemo-selectivity for hydroboration of olefins compared to JNM-1. Owing to its high chemical stability, JNM-5 can be reused for at least five cycles without losing catalytic performance and crystallinity, while the catalytic activity of JNM-1 is greatly decreased and it turns into an amorphous material after five cycles.

Graphical abstract: Tailoring stability, catalytic activity and selectivity of covalent metal–organic frameworks via steric modification of metal nodes

Supplementary files

Article information

Article type
Paper
Submitted
10 noy 2022
Accepted
17 yan 2023
First published
17 yan 2023

J. Mater. Chem. A, 2023,11, 12777-12783

Tailoring stability, catalytic activity and selectivity of covalent metal–organic frameworks via steric modification of metal nodes

H. Duan, X. Chen, Y. Yang, J. Zhao, X. Lin, W. Tang, Q. Gao, G. Ning and D. Li, J. Mater. Chem. A, 2023, 11, 12777 DOI: 10.1039/D2TA08797A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements