Abstract
Fluorescence spectroscopy is applied to study the influence of plasmon excitations in spherical Au nanoparticles on the optical properties of chlorophyll-containing light-harvesting complexes. The separation between the two nanostructures is controlled via silica layer with varied thickness. We observe strong increase of the emission intensity for a 12- nm-thick spacer and the increase is accompanied with shortening of the fluorescence lifetime, which allows us to sepa- rate contributions of absorption and emission rate enhancement. At the same time we find an increase of photobleaching. These findings are interpreted as a result of spectral overlap between plasmon resonance and chlorophyll fluorescence.
| Original language | English |
|---|---|
| Pages (from-to) | 1-7 |
| Number of pages | 7 |
| Journal | Optics and Photonics Journal |
| Volume | 3 |
| DOIs | |
| Publication status | Published - 2013 |
Fields of science
- 103009 Solid state physics
- 103021 Optics
- 103011 Semiconductor physics
- 103 Physics, Astronomy
JKU Focus areas
- Engineering and Natural Sciences (in general)