How long does it take to melt a gold nanorod? A femtosecond pump-probe absorption spectroscopic study

TitleHow long does it take to melt a gold nanorod? A femtosecond pump-probe absorption spectroscopic study
Publication TypeJournal Article
Year of Publication1999
AuthorsLink, S, Burda, C, Nikoobakht, B, EL-Sayed, MA
JournalChemical Physics Letters
Volume315
Pagination12-18
Date PublishedDec
ISBN Number0009-2614
Accession NumberWOS:000084321900003
Abstract

Using pump-probe femtosecond transient absorption spectroscopy, we determined the rate of the bleach of absorption around 700-800 nm due to the longitudinal surface plasmon band of gold nanorods. Using TEM of the spotted, completely irradiated solutions suggest that the dominant products of the photothermal conformation of the rods are spheres of comparable volume. This lead to the conclusion that the melting of the rods is at least 30-35 ps, independent 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.

DOI10.1016/s0009-2614(99)01214-2