Figure 3
From: Barium Chemosensors with Dry-Phase Fluorescence for Neutrinoless Double Beta Decay

Fluorescence response of each species in solution at concentration of 2 µM and barium at 37.5 mM. In each panel the grey line shows the emission contribution from scattering and fluorescence in the buffer alone. The coloured lines show the response with barium added. The dashed line shows a higher concentration study for comparison, with the 15c5 fluorophores at 90 µM.