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Shape evolution of gold nanoparticles in seeding approach in which 25nm citrate capped gold dots were used as the seeds and the mixtures of tetrachloroauric acid and sodium citrate as the growth solutions was investigated systematically and quantitatively. The citrate capped gold nanoparticles presented shape evolution from dot-shaped to tadpole-like, dumbbell-shaped and rod-like along the reaction...
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