Fig. 2. (a) MALDI-TOF and (b) FT-IR spectra of MUA capped Au clusters. Inset in ‘a’ shows the simulated mass spectrum. (c) Absorption (red trace) and emission (blue trace) spectra of the clusters in water. Absorption spectral changes during (d) gradual heating of clusters to 90 °C and (e) upon cooling back to room temperature.
