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. Author manuscript; available in PMC: 2011 Apr 1.
Published in final edited form as: Anal Chem. 2010 Apr 1;82(7):3061–3066. doi: 10.1021/ac100251d

Figure 4.

Figure 4

Extracted mass spectra of gold-tiopronin precursor complexes (top) and tiopronin-protected AuNPs (bottom) in positive (left) and negative (right) ion mode. Structural assignment and stoichiometries are indicated as in previous figures. All assignments in above spectra are applicable to spectra underneath, with notable differences marked in the lower spectra.