Figure 3
From: Porphyrin-magnetite nanoconjugates for biological imaging
Optical characterisation of the PMNC: (a) Absorbance spectra of original protoporphyrin IX (solid line) [1.57 × 10-6 M] and PMNC (dotted line) [100 μl PMNC in 3 ml THF]. (b) Normalised emission and excitation spectra of original porphyrin (solid line) [5.23 × 10-7 M] and PMNC (dotted line) [100 μl PMNC in 3 ml with THF]. λem = 633 nm, λex = 406 nm.