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Behavior of citrate-depleted AuNPs in the presence of GAP: (A) evolution of the UV–Vis spectrum with time. In red, necklace formation, in blue, nanoparticle fusion; (B) increase in size of the AuNPs or nanowires width with time; (B–D) TEM spectra taken at increasing times (C) 1day; (D) 4 days; (E) 8 days.
