Skip to main content
. Author manuscript; available in PMC: 2011 Jan 1.
Published in final edited form as: J Phys Chem C Nanomater Interfaces. 2010;114(17):7727–7732. doi: 10.1021/jp9122584

Figure 3.

Figure 3

(a)XPS spectra of 20 nm colloidal Au (0) NPs standard (black) and polymeric GS-Au(I) thiolates showing that Au 4f7/2 binding energies (BE) are 83.8 eV and 85.0 eV respectively. (b) Au 4f7/2 BE of orange emitting GS-AuNPs(OGS-AuNPs) and reduced OGS-AuNPs were measured to be 84.4 eV and 83.9 eV respectively. After deconvolution of BE peak of OGS-AuNPs, two peaks at 84.0 and 85.0 eV were found, which were assigned to Au(0) and Au(I) respectively.