Porphyrin-Based Nanostructures for Sensing Applications

Figure 10

Fluorescence emission (𝜆ex 420 nm) of porphyrin layers in different solutions. (a) H₂O, (b) Cd²⁺ (saturated solution), (c) Cu²⁺ (1.0×10⁻³ M), (d) Pb²⁺ (1.0×10⁻³ M) and (e) Hg²⁺ (1.0×10⁻⁵ M).