Issue 46, 2021

Isolated-alkene-linked porous organic polymers (BIT-POPs): facile synthesis via ROMP and distinguishing overlapping signals in solid-state 13C NMR

Abstract

Porous organic polymers (POPs) are a class of promising materials for overcoming environmental and energy issues worldwide. However, their amorphous nature makes structural characterization in the solid state very challenging. In addition, developing facile synthesis methods and applications for POPs with novel structures remain urgent issues requiring improvement. In this work, novel porous organic polymers (named BIT-POPs) with isolated trans-alkene linkages were synthesized via cross-linking bis-norbornene via ring opening metathesis polymerization (ROMP) in an extremely mild and fast manner. Spectral editing approaches, such as 13C-CPMAS, 13C-CPPI, and 13C-CPNQS, relating to solid-state NMR were used to distinguish the overlapping NMR signals of insoluble BIT-POPs, and two-dimensional 1H–13C HETCOR spectra were used. Also, BIT-POP-5 was added to a polysulfone matrix as a porous filler to form a mixed-matrix membrane, which showed a 126% increase in CO2 permeability during gas separation.

Graphical abstract: Isolated-alkene-linked porous organic polymers (BIT-POPs): facile synthesis via ROMP and distinguishing overlapping signals in solid-state 13C NMR

Supplementary files

Article information

Article type
Paper
Submitted
17 Aug 2021
Accepted
25 Oct 2021
First published
03 Nov 2021

Polym. Chem., 2021,12, 6745-6754

Isolated-alkene-linked porous organic polymers (BIT-POPs): facile synthesis via ROMP and distinguishing overlapping signals in solid-state 13C NMR

Z. Zhang, S. Peng, S. Chi, H. Chen, L. Fan, Y. Liu, X. Ma and M. Huang, Polym. Chem., 2021, 12, 6745 DOI: 10.1039/D1PY01120K

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