Fig. 4: Light-responsive ion transport in Cu-TCPP membranes.
a Schematic diagram of temperature field formed in Cu-TCPP nanochannels under light irradiation. b, c Photo-responsive currents and voltages when the light was irradiated on Zone-I, II, and III. d Infrared thermal images of Cu-TCPP and PVDF membranes before and after light irradiation. e Schematic diagram of the concentration simulation of Cl− (Top) and K+ (Down) between the nanochannel and the reservoir (Left). The net change in concentration and ionic current at different temperature gradients (Right). f Changes of ion concentration after light-induced transport. Individual data points are plotted to provide a transparent view of the data spread. The error bars represent the standard deviations of three parallel tests. The red point is individual data point which is plotted to provide a transparent view of the data spread. g Maximum photocurrent and corresponding temperature difference when different part of Cu-TCPP membrane was illuminated. Individual data points are plotted to provide a transparent view of the data spread. The error bars represent the standard deviations of three parallel tests. The red point is individual data point which is plotted to provide a transparent view of the data spread. h Effect of solution concentration on peak voltage and current under light irradiation. i Maximum photocurrent and temperature changes under light irradiation with different intensity. The error bars represent the standard deviations of three parallel tests.
