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|Title:||A single-step synthesis of gold nanochains using an amino acid as a capping agent and characterization of their optical properties|
|Authors:||Polavarapu, L. |
|Source:||Polavarapu, L.,Xu, Q.-H. (2008). A single-step synthesis of gold nanochains using an amino acid as a capping agent and characterization of their optical properties. Nanotechnology 19 (7) : -. ScholarBank@NUS Repository. https://doi.org/7/075601|
|Abstract:||We demonstrated a simple single-step synthesis of gold nanochains by reducing aqueous chloroaurate ions (AuCl4 -) with sodiumborohydride (NaBH4) in the presence of an amino acid (glutamic acid and histidine) as a stabilizer. The structure and optical properties of gold nanochains and nanowires were characterized by transmission electron microscopy, UV-visible spectroscopy, infrared spectroscopy and femtosecond z-scan measurements. The results suggested that the gold nanochains and nanowires were formed via the nanospheres fusing into one another by an oriented attachment mechanism through dipole-dipole interactions. The z-scan measurements on Au nanowires showed a transition from saturable absorption to reverse saturable absorption as the pump intensity increased. © IOP Publishing Ltd.|
|Appears in Collections:||Staff Publications|
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