Fig. 4

Change in the optical properties of the [B12I12]2−-based layer during water induced dewetting. Dark field optical microscopy images (scale bar=600 µm) showing the change in the [B12I12]2− layer on FSAM induced by continuous intake of water. a before the experiment a smooth layer is not visible in dark field, b–e continuous change of the surface morphology during water intake, f–h layer ruptures and holes grow. Droplets are formed on the surface