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

Autor:	Mu-Hua Huang, Lei Fan, Shan-Qing Peng, Shumeng Chi, Xiaohua Ma, Zhi-Hao Zhang, Yan Liu, Hanyuan Chen
Rok vydání:	2021
Předmět:	chemistry.chemical_classification Materials science Polymers and Plastics Alkene Organic Chemistry Bioengineering Polymer ROMP Carbon-13 NMR Biochemistry Amorphous solid chemistry.chemical_compound chemistry Chemical engineering Ring-opening metathesis polymerisation Polysulfone Gas separation
Zdroj:	Polymer Chemistry. 12:6745-6754
ISSN:	1759-9962 1759-9954
DOI:	10.1039/d1py01120k
Popis:	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.
Databáze:	OpenAIRE
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