Change search
ReferencesLink to record
Permanent link

Direct link
Influence of the Local Environment on Determining Aspect-Ratio Distributions of Gold Nanorods in Solution Using Gans Theory
NTT Basic Research Labs.
NTT Basic Research Labs.
NTT Basic Research Labs.
NTT Basic Research Labs.
Show others and affiliations
2007 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 111, 14299- p.Article in journal (Refereed) Published
Abstract [en]

We apply Gans theory to fit the absorption spectra of gold nanorods with aspect ratios R < 2.5 in solution using both the longitudinal and transversal surface plasmon resonance absorption peaks and the dielectric constant of the medium as a fitting parameter. By fitting the broadened absorption peaks using the absorption spectra of a set of nanorods with a range of aspect ratios, we determine the size distribution of the nanorods in solution. The optimum value of dielectric constant is substantially higher than the dielectric constant of the solvent, which is most likely due to a change in the effective dielectric constant in the vicinity of the nanorods. The validity of our method is confirmed by comparing the calculated size  distributions with transmission electron microscope images, and we obtain a good agreement between the experiments and our calculations. Furthermore, several other recent experimental results are compared with our fitting method, and we find that the discrepancy between Gans theory and those experimental results can be explained by using higher values of dielectric constant.


Place, publisher, year, edition, pages
American Chemical Society (ACS), 2007. Vol. 111, 14299- p.
Keyword [en]
National Category
Physical Chemistry
URN: urn:nbn:se:kth:diva-48925DOI: 10.1021/jp074500rISI: 000249838300006OAI: diva2:458872
QC 20111207Available from: 2011-12-07 Created: 2011-11-24 Last updated: 2011-12-08Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Sychugov, Ilya
In the same journal
The Journal of Physical Chemistry C
Physical Chemistry

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 15 hits
ReferencesLink to record
Permanent link

Direct link