@misc{ghanem_synthesis_characterization_2009, 
author={Ghanem, B.S., McKeown, N.B., Budd, P.M., Al-Harbi, N.M., Fritsch, D., Heinrich, K., Starannikova, L., Tokarev, A., Yampolskii, Y.},
title={Synthesis, Characterization, and Gas Permeation Properties of a Novel Group of Polymers with Intrinsic Microporosity: PIM-Polyimides},
year={2009},
howpublished = {journal article},
doi = {https://doi.org/10.1021/ma901430q},
abstract = {A range of polyimides with characteristics similar to a polymer of intrinsic microporosity (PIM) were prepared by reaction with various aromatic diamines of a bis(carboxylic anhydride) incorporating a spiro-center. The polymers exhibited high surface area, as determined by nitrogen adsorption, and high thermal stability. Membrane gas permeation experiments showed PIM-polyimides to be among the most permeable of all polyimides and to have selectivities close to the upper bound for several important gas pairs. A group contribution method was used to predict permeability coefficients and separation factors for further PIM-polyimide structures, revealing worthwhile targets for future synthetic efforts.},
note = {Online available at: \url{https://doi.org/10.1021/ma901430q} (DOI). Ghanem, B.; McKeown, N.; Budd, P.; Al-Harbi, N.; Fritsch, D.; Heinrich, K.; Starannikova, L.; Tokarev, A.; Yampolskii, Y.: Synthesis, Characterization, and Gas Permeation Properties of a Novel Group of Polymers with Intrinsic Microporosity: PIM-Polyimides. Macromolecules. 2009. vol. 42, no. 20, 7881-7888. DOI: 10.1021/ma901430q}}