Optically Active Films Based on AOT-Stabilized Silver Organosol

Composite films based on silver organosols stabilized with an anionic surfactant (AOT, sodium bis(2-ethylhexyl)sulfosuccinate) have been formed on polystyrene substrates by the dip-coating method. The process of film formation has been shown to be accompanied by the appearance of silver aggregates with interparticle distances exceeding the particle diameters. At the same time the aggregation has no effect on the optical properties of the nanoparticles. The obtained films exhibit plasmon absorption signal and the absence of plasmonic delocalization. Variations in the the number of substrate immersions in the sol makes it possible to affect the intensity of the plasmon absorption signal and the functional properties of the resulting coatings, such as their morphology, roughness (from 9 ± 2 to 25 ± 4 nm), thickness (from 585 ± 13 to 831 ± 28 nm), and the wettability of the surface by water (from 36 ± 6 to 53 ± 9°).