Fig. 2. (a) Emission spectra of 1a (20 μM) in solutions of varied MeOH : H2O ratio. (b) Sample images under UV irradiation at 365 nm. (c) Crystal structure of 1(ClO4) displaying Pt–Pt interactions. (d) 1H NMR of 1a (1 mM) in D2O with variation of temperatures. (e) ESI-MS spectrum of 1a in 1% MeOH in H2O; inset shows m/z at a range of 1075–1125.
