Graphyne. Cyclohexane rings connected by poly-yne chains of equal length. Allows for a somewhat tunable pore size, with no "drilling" necessary. Graph-di-yne

Graphyne. Cyclohexane rings connected by poly-yne chains of equal length. Allows for a somewhat tunable pore size, with no "drilling" necessary. Graph-di-yne and graph-tri-yne are nearest the appropriate pore size for water. A series of graphyne filters with larger pore sizes would likely be needed to clear out particulates and larger ions, so that the final purification step proceeds at a reasonable flow rate. https://arxiv.org/abs/1312.3179 https://arxiv.org/abs/1312.3179 Similar problem as graphene, in that it has not only never been outside of the lab, but also never been outside of the computer model.