Bromide-Assisted Anisotropic Growth of Gold Nanoparticles as Substrates for Surface-Enhanced Raman Scattering

Figure 1

SEM images showing results from gold nanoparticle synthesis with variances in manner and order of addition. (a) Simple addition of HAuCl₄ to solution of 5-HIAA. (b) Dropwise addition of HAuCl₄. (c) Dropwise addition of 5-HIAA to solution of HAuCl₄. (d) Simple addition of 5-HIAA to solution of HAuCl₄.

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