Fig. 4: Photo controlled graded molecular separation.
From: Sub-8 nm networked cage nanofilm with tunable nanofluidic channels for adaptive sieving
a Schematic demonstrating the light-controlled graded molecular sieving. b Molecule rejections of the iac-cage-azo membrane with increasing solute dimension after UV and Vis irradiation. The error bars show the standard deviation of three parallel membrane samples. c Reversible dye rejection of methyl orange and 4-nitrophenol of the iac-cage-azo membrane observed upon alternating UV and Vis irradiation. d UV-Vis absorption spectra of the ternary mixture in water and the permeate from the membrane of state I. e UV-Vis absorption spectra of the permeate from the membrane of state II, showing the existence of methyl orange. f UV-Vis absorption spectra of the retentate of state II, showing the pure phase of Congo red. Inserts are the digital pictures related to permeate and retentate. The standard UV-Vis absorption spectra of 4-nitrophenol, methyl orange and Congo red are presented in Supplementary Fig. 25.
