Figure 5From: Facile purification of colloidal NIR-responsive gold nanorods using ions assisted self-assembly Time resolved absorption spectra of as-made gold NR mixtures. In the presence of NaCl with a certain concentration of (a) 0.43 M (b) 0.86 M and (c) 2.58 M, respectively. In each panel, the spectrum of NR mixtures without the presence of NaCl was also added for ease of comparisonBack to article page