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°´ÕÕÎÄÏ× ÖÆ±¸½ðÄÉÃ×°ô£ºChem. Mater. 2005, 17, 4636-4641
²½ÖèÈçÏ£ºGold Nanorod Synthesis. Gold nanorods were prepared exactly
as described by Sau et al.,33 but scaled up to increase the quantity.
Gold seed particles were prepared by adding 250 ¨ªL of 10 mM
HAuCl4a3H2O to 7.5 mL of 100 mM cetyltrimethylammonium
bromide (CTAB) with brief, gentle mixing. Next, 600 ¨ªL of freshly
prepared, ice-cold 10 mM NaBH4 solution was added followed by
mixing for 2 min. The pale brown seed solution was stable and
usable for several days. The nanorod growth solution was prepared
by adding the following reagents to a plastic tube in the following
order and then gently mixing: 40 mL of 100 mM CTAB, 1.7 mL
of 10 mM HAuCl4a3H2O, 250 ¨ªL of 10 mM AgNO3. Next, 270
¨ªL of 100 mM ascorbic acid was added, which changed the solution
from brown-yellow to colorless. To initiate nanorod growth, 420¨ªL of the seed solution was added to the growth solution, mixed gently, and left still for 3 h.
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