Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 9, 2010
Previous Article Next Article

Surface plasmon resonance of gold nanoparticlesassemblies at liquid | liquid interfaces

Author affiliations

Abstract

Surface plasmon resonance (SPR) was observed when a planar close-packed assembly of gold nanoparticles (Au NPs) is adsorbed at the water|1,2-dichloroethane interface. Aqueous gold nanoparticles, 13 or 16 nm in diameter, are deposited at the interface by adding methanol to form a close-packed film with a visible gold mirror reflectance. By total internal reflection of a light beam on the interface, the angular dependence of the interfacial reflectivity was measured in a pseudo-Kretschmann configuration and compared to Fresnel simulations for a homogeneous gold film. The experimental angles for minimum reflectivity were found to match the simulated values. Then, the fluorescence of dye molecules co-adsorbed within 13 and 16 nm gold nanoparticles assemblies at the liquid|liquid interface was measured. The fluorescence intensity under SPR is revealed to be much greater than under total internal reflection conditions, yielding an enhancement factor of approximately 30 and 50 for 13 and 16 nm Au NPs assemblies, respectively. Also, the fluorescence lifetime was found to decrease under SPR conditions.

Graphical abstract: Surface plasmon resonance of gold nanoparticles assemblies at liquid | liquid interfaces

Back to tab navigation

Supplementary files

Article information


Submitted
07 Apr 2010
Accepted
04 Jun 2010
First published
08 Jul 2010

Nanoscale, 2010,2, 1665-1669
Article type
Communication

Surface plasmon resonance of gold nanoparticles assemblies at liquid | liquid interfaces

M. Hojeij, N. Younan, L. Ribeaucourt and H. H. Girault, Nanoscale, 2010, 2, 1665
DOI: 10.1039/C0NR00241K

Social activity

Search articles by author

Spotlight

Advertisements