Metal Nanoparticles and Methods of Making Same

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A method for making metal nanorods, the method comprising:

• combining metal seeds with a growth solution comprising at least one gemini surfactant and a source of metal cations to form a mixture, wherein the metal cations are reduced and the metal nanorods are produced.

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Metal nanorods free of a cytotoxic surfactant, optionally, free of a cationic cytotoxic surfactant, optionally, free of CTAB, optionally, produced using a composition free of metal seeds.

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Metal nanorods produced using a composition free of metal seeds.

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