• Open Access

Nanoporous Organic Polymer/Cage Composite Membranes


  • The work leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) NMP3-SL-2009-228631, project DoubleNanoMem. A.F.B. is supported by the Engineering and Physical Sciences Research Council (EPSRC) through the Doctoral Training Account. We also thank EPSRC for financial support under grant EP/H000925/1. A.I.C. is a Royal Society Wolfson Merit Award Holder.


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Organic–organic composite membranes are prepared by in situ crystallization of cage molecules in a polymer of intrinsic microporosity. This allows a direct one-step route to mixed-matrix membranes, starting with a homogeneous molecular solution. Extremely high gas permeabilities are achieved, even after ageing for more than a year, coupled with good selectivity for applications such as CO2 recovery.