Fig. 3. Time-dependent fluorescent response and aggregation progression of Zn(ii)-treated A-1. (a) Change in the FRET signal of A-1 with Zn(ii) as a function of incubation time. (b) TEM images of Zn(ii)-added A-1 aggregates generated at various incubation time points (scale bar = 200 nm). Conditions: [A-1] = 0.25 μM (for FRET) and 2.5 μM (for TEM); [ZnCl2] = 100 μM (for FRET) and 1 mM (for TEM); λex = 280 mm; λem = 420 nm; incubation up to 10 h; room temperature.
