Porphyrin-Based Nanostructures for Sensing Applications

Figure 8

Absorption (dashed lines) and emission (solid lines, 𝜆ex 420 nm, 𝜆em 654, 720 nm) of porphyrin layers at different Hg²⁺ concentrations. (a) and (b) [Hg²⁺]=0.0 M; (c) and (d) [Hg²⁺]=1.0×10⁻⁵ M.