S. Link et al., How long does it take to melt a gold nanorod? A femtosecond pump-probe absorption spectroscopic study, CHEM P LETT, 315(1-2), 1999, pp. 12-18
Using pump-probe femtosecond transient absorption spectroscopy, we determin
ed the rate of the bleach of absorption around 700-800 nm due to the longit
udinal surface plasmon band of gold nanorods. Using TEM of the spotted, com
pletely irradiated solutions suggest that the dominant products of the phot
othermal conformation of the rods are spheres of comparable volume. This le
ad to the conclusion that the melting of the rods is at least 30-35 ps, ind
ependent of the power used (5-20 mu J) or the nanorod aspect ratio (1.9-3.7
). (C) 1999 Elsevier Science B.V. All rights reserved.