Zolotukhin, Mikhail G.Sulub-Sulub, RitaAguilar-Vega, ManuelCetina Mancilla, EnocCamacho Zuñiga, ClaudiaGonzález Díaz, Maria OrtenciaCervantes T., AlondraRuiz Treviño, Francisco AlbertoVivaldo Lima, EduardoVera Graziano, Ricardo2024-04-162024-04-162024-02-27Cetina-Mancilla, E., Camacho-Zuñiga, C., González-Díaz, M. O., Alondra, C. T., Ruiz-Treviño, A. F., Vivaldo-Lima, E., Vera-Graziano, R., Zolotukhin, M. G., Sulub-Sulub, R., & Aguilar-Vega, M. (2024). Room temperature synthesis, characterization and enhanced gas transport properties of novel poly(oxindolylidene arylene)s with dibenzothiophene, dibenzothiophene-S-oxide and dibenzothiophene-S,S-dioxide fragments in the main chain. Separation and Purification Technology, 341, 126853. https://doi.org/10.1016/j.seppur.2024.126853https://doi.org/10.1016/j.seppur.2024.126853https://hdl.handle.net/11285/652399Aromatic sulfur-containing polymers poly(arylene ether sulfone)s and poly(arylene sulfide sulfone)s are widely used in membrane-based gas- and liquid separations and purification technologies. In this work, we report a facile, robust, room temperature synthesis of a series of novel, solution processable aromatic polymers containing dibenzothiophene, dibenzothiophene-S-oxide, and dibenzothiophene-S,S-dioxide fragments in the main chain, alternating with bulky, torsion resistant oxindolylidene groups. The NMR studies of the polymers obtained revealed ladderized, rigid kink-structured backbones. This combination provides membranes with higher permeability and selectivity with gas pairs CO2/CH4, H2/CH4 and H2/N2, close to or even surpassing the 2008 Robeson’s trade-off line, that compare favorably with polysulfones and poly(ether sulfone)s reported in the literature that lie below the 1991 upper bond. Polymer P2-SO2 containing dibenzothiophene-S,S-dioxide fragments showed impressive CO2 and H2 permeabilities (243. 3 and 315.1 Barrer, respectively); on the other hand, P1-SO containing dibenzothiophene-S-oxide exhibited remarkable H2/CH4 and H2/N2 selectivity (127.26 and 99.34, respectively). This work offers a novel and facile route to fabricate various polysulfones and polysulfoxides with reversible-tunable gas separation properties inspired by the concept of rigid kink-structured backbones that shift their gas transport properties towards higher permeability and higher selectivity.TextoengrestrictedAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0BIOLOGÍA Y QUÍMICAScienceArtículoSeparation and Purification TechnologyAccess through subscriptionhttps://orcid.org/0000-0003-3512-1024https://orcid.org/0000-0002-4701-3381https://orcid.org/0000-0002-0946-9206https://orcid.org/0000-0002-6476-8137https://orcid.org/0000-0001-8937-214Xhttps://orcid.org/0000-0003-2870-9831Superacid catalyzed polycondensationPost-polymerization oxidationGas separationPolysulfones and polysulfoxides341126853Estados Unidos de América / United States57216317165650421346157191374474589092461005890889270055914551100