A novel covalent-triazine framework (CTF-PO71) is designed and prepared from an organic pigment molecule for high-performance gas separation. The functional sites with different electrostatic potentials on the pore surface of CTF-PO71 demonstrate a strong interaction between C2H2 and CTF-PO71 to achieve preferential adsorption of C2H2 over C2H4, thus enabling effective capture of a trace amount of C2H2 from the gas mixture. This is the first organic porous polymer that is capable of separating C2H2 and C2H4. The commercial availability and the low cost of the pigment as well as the high stability of the resultant framework endow CTF-PO71 with a significant potential for practical applications.
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): FCC/1/1972-19
Acknowledgements: This work was supported by the National Natural Science Foundation of China (Grant Nos. 21402136 and 21603161), Natural Science Foundation of Tianjin City (Grant No. 16JCYBJC17000). Y.F.Z. acknowledges support from “Youth Thousand Talents Program” of Tianjin City. Y.H. thanks the King Abdullah University of Science and Technology for offering the CCF grant (FCC/1/1972-19) to support this study.