Figure 1
From: A novel polypeptide-modified fluorescent gold nanoclusters for copper ion detection
Characterization of the AuNCs: (a) UV–visible absorption spectrum of the AuNCs, (b) The photographs of the AuNCs (The photograph on the left is in daylight, The photograph on the right shows a 350 nm UV lamp), (c) The TEM photograph of the AuNCs, (d) Fluorescence emission spectra of AuNCs at an excitation wavelength of 260 nm.
