Friday, September 11, 2009

Dip coating CdSe nanorod tips with Gold

Sheldon et al. (from Alivisatos group at UC Berkeley) reported 100,000 fold increase in the conductance of the CdSe nanorods by dipping the ends into gold. The procedure they followed was very simple:
a toluene solution containing gold trichloride (AuCl3, 12 mg, 0.04 mmol), didodecyldimethylammonium bromide (DDAB, 40 mg, 0.08 mmol), and dodecylamine (DDA, 70 mg, 0.37 mmol) was sonicated for 5 min and then added dropwise to a suspension of nanorods stirring under N2. The product was precipitated with methanol
and separated by centrifugation.

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