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. Author manuscript; available in PMC: 2009 Oct 13.
Published in final edited form as: J Mater Chem. 2009 Jan 1;19:6317–6320. doi: 10.1039/b901817d

Fig. 1.

Fig. 1

(A) Photograph showing the depth of colour change of 1 nM Au–Ag nanocages before (left) and after (right) reacting with 1 mM mPEG-SH aqueous solution for 24 h. (B) UV-Vis spectra of 1 nM Au–Ag nanocages as a function of reaction time with 1 mM mPEG-SH aqueous solution. (C) Change in the full width at half maximum (FWHM) from UV-Vis spectra as a function of reaction time with 1 mM mPEG-SH aqueous solution. (D) UV-Vis spectra of 1 nM Au–Ag nanocages plotted as a function of the concentration of mPEG-SH aqueous solution (reaction time: 24 h).