Aqueous synthesis of glutamate functionalized single crystal gold nanoparticles was achieved by reducing a solution of chloroauric acid with monosodium glutamate. Highly uniform size distributions of the nanoparticles can be obtained by having an excess of monosodium glutamate in the starting solution. Similar to the conventional synthesis of gold nanoparticles by reduction of chloroauric acid with trisodium citrate, the obtained particle sizes were varied in the range of 14 – 25 nm without loosing the uniformity in its size distribution by varying the concentration of the reducing agent.
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Sugunan, A., Dutta, J. Novel Synthesis of Gold Nanoparticles in Aqueous Media. MRS Online Proceedings Library 901, 655 (2005). https://doi.org/10.1557/PROC-0901-Ra16-55-Rb16-55