Emission spectra of PFP/dsDNA (i), PFP/dsDNA/EB (ii), PFP/dsDNA-FL (iii), and PFP/dsDNA-FL/EB (iv) complexes in potassium phosphate–sodium hydroxide buffer solution (50 mM, pH 7.4). [PFP] = 1.6 × 10-6 M (in repeat units), [dsDNA], [dsDNA-FL] = 1.0 × 10-7 M, and [EB] = 6.7 × 10-7 M. The excitation wavelength is 380 nm for all samples.