Synthesis of Highly Gas-Permeable Polyimides of Intrinsic Microporosity Derived from 1,3,6,8-Tetramethyl-2,7-diaminotriptycene
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http://pubs.acs.org/page/policy/authorchoice_termsofuse.htmlType
ArticleAuthors
Ghanem, BaderAlghunaimi, Fahd
Wang, Yingge
Genduso, Giuseppe
Pinnau, Ingo
KAUST Department
Advanced Membranes and Porous Materials Research CenterChemical Engineering Program
Physical Science and Engineering (PSE) Division
Online Publication Date
2018-09-25Print Publication Date
2018-09-30Date
2018-09-25Abstract
A simple synthetic route to a novel sterically hindered triptycene-based diamine, 1,3,6,8-tetramethyl-2,7-diaminotriptycene (TMDAT), and its use in the preparation of high molecular weight polyimides of intrinsic microporosity (PIM-PIs) are reported. The organosoluble TMDAT-derived polyimides displayed high Brunauer–Emmett–Teller surface areas ranging between 610 and 850 m2 g–1 and demonstrated excellent thermal stability of up to 510 °C. Introduction of the rigid three-dimensional paddlewheel triptycene framework and the tetramethyl-induced restriction of the imide bond rotation resulted in highly permeable polyimides with moderate gas-pair selectivity. The best performing polyimide made from TMDAT and a triptycene-based dianhydride showed gas transport properties located between the 2008 and 2015 polymer permeability/selectivity trade-off curves with H2 and O2 permeabilities of 2858 and 575 barrer combined with H2/N2 and O2/N2 selectivities of 24 and 4.8, respectively, after 200 days of physical aging.Citation
Ghanem BS, Alghunaimi F, Wang Y, Genduso G, Pinnau I (2018) Synthesis of Highly Gas-Permeable Polyimides of Intrinsic Microporosity Derived from 1,3,6,8-Tetramethyl-2,7-diaminotriptycene. ACS Omega 3: 11874–11882. Available: http://dx.doi.org/10.1021/acsomega.8b01975.Acknowledgements
This work was supported by funding from King Abdullah University of Science and Technology (KAUST).Publisher
American Chemical Society (ACS)Journal
ACS OmegaDOI
10.1021/acsomega.8b01975Additional Links
https://pubs.acs.org/doi/full/10.1021/acsomega.8b01975Relations
Is Supplemented By:- [Dataset]
Ghanem, B. S., Alghunaimi, F., Wang, Y., Genduso, G., & Pinnau, I. (2018). CCDC 1515556: Experimental Crystal Structure Determination [Data set]. Cambridge Crystallographic Data Centre. https://doi.org/10.5517/CCDC.CSD.CC1MW1XG. DOI: 10.5517/ccdc.csd.cc1mw1xg Handle: 10754/664216