Fig. 6
From: Reversible fluorescent solid porous films for detection of zinc ions in biological media
Zn2+ sensing performed with mesoporous nanostructured silica films in water (A) and in buffer (B) solutions presenting variable ion concentrations, after regeneration steps in the respective medium (the regeneration step is performed flushing the film with milli-Q water for 5 s). The segments connecting experimental points in the scatter plots have no physical meaning and are reported only to ease the visualization of sensing dynamics. For λexc = 492 nm, the peak position is at λem = 536 nm. Error bars are determined by the scale resolution of the sensor