%0 journal article %@ 0024-9297 %A Ghanem, B.S., McKeown, N.B., Budd, P.M., Fritsch, D. %D 2008 %J Macromolecules %N 5 %P 1640-1646 %R doi:10.1021/ma071846r %T Polymers of Intrinsic Microporosity Derived from Bis(phenazyl) Monomers %U https://doi.org/10.1021/ma071846r 5 %X Novel polymers of intrinsic microporosity (PIMs) are prepared from bis(phenazyl) monomers derived from readily available bis(catechol)s. One of the polymers (termed PIM-7) has an excellent combination of properties with high internal surface area, good film-forming characteristics, and gas transport properties that make it a suitable candidate for gas separation membranes. The high gas permeability and good ideal selectivity of PIM-7 place it above Robeson's upper-bound for a number of commercially important gas pairs (e.g., O2/N2, CO2/CH4, and CO2/N2).