Fig. 2. (a) Changes in UV-visible absorption spectrum of 2 (99% Tris buffer (5 mM tris(hydroxymethyl)aminomethane, 25 mM NaCl, pH 7), 1% DMSO) with addition of DNA, highlighting hypochromicity with increasing DNA concentration. Inset: derived binding curve from these data. (b) Increase in MLCT luminescence of 2 (λ ex = 450 nm) with the addition of DNA.
