Hydrogen Bond Acceptors and Additional Cationic Charges in Methylene Blue Derivatives: Photophysics and Antimicrobial Efficiency
Figure 2
Absorption spectra of MB and its derivatives for different concentrations. Absorption spectra of methylene blue and its derivatives MB-1 and MB-4 within a concentration range of 10–200 μM in H2O; the measurements show dimerisation for MB, MB-4, and MB-5 in the given concentration range (see supporting information).
