Covalent Amine Tethering on Ketone Modified Porous Organic Polymers for Enhanced CO2 Capture

Perman Jorayev, Intizar Tashov, Vepa Rozyyev, Thien S. Nguyen, Nesibe A. Dogan, Cafer T. Yavuz

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Effective removal of excess greenhouse gas CO2 necessitates new adsorbents that can overcome the shortcomings of the current capture methods. To achieve that, porous materials are often modified post-synthetically with reactive amine functionalities but suffer from significant surface area losses. Herein, we report a successful amine post-functionalization of a highly porous covalent organic polymer, COP-130, without losing much porosity. By varying the amine substituents, we recorded a remarkable increase in CO2 uptake and selectivity. Ketone functionality, a rarely accessible functional group for porous polymers, was inserted prior to amination and led to covalent tethering of amines. Interestingly, aminated polymers demonstrated relatively low heats of adsorption, which is useful for the rapid recyclability of materials, due to the formation of suspected intramolecular hydrogen bonding.
Original languageEnglish (US)
Pages (from-to)6433-6441
Number of pages9
JournalChemSusChem
Volume13
Issue number23
DOIs
StatePublished - Dec 7 2020
Externally publishedYes

ASJC Scopus subject areas

  • Energy(all)
  • Environmental Chemistry
  • Materials Science(all)
  • Chemical Engineering(all)

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