| Title: |
Norbornane-based covalent organic frameworks for gas separation. |
| Authors: |
Kumar, Sushil; Abdulhamid, Mahmoud; Dinga Wonanke, A D; Addicoat, Matthew; Szekely, Gyorgy |
| Contributors: |
Advanced Membranes and Porous Materials Research Center; Chemical Engineering Program; Physical Science and Engineering (PSE) Division; School of Science and Technology, Nottingham Trent University, Nottingham, UK |
| Publisher Information: |
Royal Society of Chemistry (RSC) |
| Publication Year: |
2022 |
| Collection: |
King Abdullah University of Science and Technology: KAUST Repository |
| Description: |
Covalent organic frameworks (COFs) have emerged as a new class of crystalline porous materials with distinct structural features, such as uniform pore distribution, tunable architecture, and modifiable skeletons. COFs hold significant promise for application in gas separation because of their high Brunauer–Emmett–Teller surface area and narrow pore-size distribution, which enable selective separation. The porosity and separation performance of COFs have been finely tuned by structurally modifying the starting materials. Along this direction, for the first time, we prepared W-shaped diamines by catalytic arene–norbornene annulation (CANAL) and then treated them with trialdehyde (Tp) to synthesize novel β-ketoenamine-linked norbornane-based COFs, i.e., ND-COF-1 and ND-COF-2, via a solvothermal Schiff-base condensation approach. The pore interior was decorated with methyl groups attached to the norbornane unit of the COF skeleton. Both COFs exhibited high chemical stability in different organic solvents and acidic media. Additionally, they showed high CO2/N2 selectivity compared with those of previously reported COFs. Moreover, their CH4/N2 separation efficiency was investigated, and the results revealed that ND-COF-1 is more selective than ND-COF-2, which could be attributed to the less hindered pathway offered to methane gas molecules by the framework pore. ; SK and MAH thank King Abdullah University of Science and Technology (KAUST) for the postdoctoral fellowship. The research reported in this publication was supported by funding from KAUST. We acknowledge Rifan Hardian for the IAST calculations, Abdul Hamid Emwas for the solid-state 13C CP–MAS NMR analysis, and Mohamed Nejib Hedhili for the XPS measurements. MAA thanks the Materials Chemistry Consortium for HPC access (EP/T022213). |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| ISSN: |
2040-3364 |
| Relation: |
http://xlink.rsc.org/?DOI=D1NR07593D; Kumar, Abdulhamid, M. A., Dinga Wonanke, A. D., Addicoat, M. A., & Szekely, G. (2022). Norbornane-based covalent organic frameworks for gas separation. Nanoscale. https://doi.org/10.1039/d1nr07593d; Nanoscale; http://hdl.handle.net/10754/675458 |
| DOI: |
10.1039/d1nr07593d |
| Availability: |
http://hdl.handle.net/10754/675458; https://doi.org/10.1039/d1nr07593d |
| Rights: |
This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. ; http://creativecommons.org/licenses/by/3.0/ |
| Accession Number: |
edsbas.AF4FC10A |
| Database: |
BASE |