2.4.4. Fourier Transform Infrared Spectroscopy (FTIR)

Infrared analyses were carried out with a Nicolet Nexus spectrophotometer. The pigments were prepared as KBr pellets, and spectra were collected in transmission mode between 4000 cm−<sup>1</sup> and 650 cm−1, with a resolution of 8 cm−<sup>1</sup> and 64 scans. The spectra are shown here as acquired, without corrections or any further manipulations.
