A bioinspired multifunctional heterogeneous membrane composed of a block copolymer (PS-b-P4VP) membrane and a porous anodic alumina membrane is fabricated. The ionic rectification is so strong that the maximum ratio is ≈489, and the chemical actuation of the anion or cation gate from the “OFF” to the “ON” state promotes a 98.5% increase in the channel conductance.
Zhang, Z., Kong, X-Y., Xiao, K., Xie, G., Liu, Q., Tian, Y., Zhang, H., Ma, J., Wen, L., & Jiang, L. (2016). A bioinspired multifunctional heterogeneous membrane with ultrahigh ionic rectification and highly efficient selective ionic gating. Advanced Materials, 28(1), 144-150. https://doi.org/10.1002/adma.201503668