Influence of Solvent Polarity and DNA-Binding on Spectral Properties of Quaternary Benzo[c]phenanthridine Alkaloids
Fig 2
Acid-base properties of 3 μM macarpine.
Dependence of absorbance at 495 nm (black) and fluorescence at 450 nm (red) on pH, n = 3. Mean values ± SD and fits to Eq (4) are shown. Inset: Absorption (black) and emission (red) spectra of iminium (—) and alkanolamine (…) form. Ordinates are the same as for bigger figure.