Synthesis and Characterization of Functional Triphenylphosphine‐Containing Microporous Organic Polymers for Gas Storage and Separation

Abstract

Two kinds of novel triphenylphosphine‐containing microporous organic polymers are designed and synthesized via palladium‐catalyzed Sonogashira−Hagihara coupling condensation reaction of triphenylphosphine oxide‐ and sulfide‐based monomers with different arylethynylene linkers. The gas adsorption isotherms reveal that these polymers have strong binding affinity for CO2 with high CO2 adsorption capacity, although they have moderate Brunauer−Emmett−Teller surface area ranging from 684 to 883 m2 g−1. Among the resulting polymers, triphenylphosphine oxide–tris(4‐ethynylphenyl)amine exhibits the highest CO2 uptake capacity of 2.61 mmol g−1 at 273 K and 1.13 bar with relatively high gas selectivity of 60.2 for CO2 over N2 at 273 K.

Rise of Conjugated Poly-ynes and Poly(Metalla-ynes): From Design Through Synthesis to Structure–Property Relationships and Applications

“…Besides, poly-ynes have also been reported to capture molecular species such as methane, carbon dioxide, benzene, toluene, nitrogen, hydrogen, etc. In a recent work, Xu et al 938 synthesized triphenylphosphine-based microporous poly-ynes that have an affinity toward CO 2 , N 2 , and CH 4 . Among studied gases, the polymers showed highest affinity, strong binding, and adsorption capacity for CO 2 .…”