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Adv Mater. 2014 Jun 4;26(21):3526-31. doi: 10.1002/adma.201305783. Epub 2014 Mar 14.

Triptycene induced enhancement of membrane gas selectivity for microporous Tröger's base polymers.

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School of Chemistry, Cardiff University, Cardiff, CF10 2AT, UK.


A highly gas permeable polymer with exceptional size selectivity is prepared by fusing triptycene units together via a poly-merization reaction involving Tröger's base formation. The extreme rigidity of this polymer of intrinsic microporosity (PIM-Trip-TB) facilitates gas permeability data that lie well above the benchmark 2008 Robeson upper bounds for the important O2 /N2 and H2 /N2 gas pairs.


gas separation; intrinsic microporosity; polymer membranes; triptycene

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