Permselective Membranes: Spectroscopic and Conductivity Effects

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Science  15 Nov 1963:
Vol. 142, Issue 3594, pp. 953-954
DOI: 10.1126/science.142.3594.953


The absorption spectrum of permselective ion-exchange membranes containing positively charged groups shows specific effects which depend on the nature of the negative gegenion used. Such colored permselective membranes with positive or negative functional groups show increased condutivity after illumination with light flashes. The increased conductivity returns slowly to the original value.