Single-molecule measurements of gold-quenched quantum dots.

Clicks: 242
ID: 804
2004
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Abstract
We report the study of the quenching of quantum dots (CdSe) by gold nanoparticles at the single-molecule level. Double-stranded DNA is used as a rigid spacer to tune the distance between the two nanoparticles. The width of the fluorescent intensity distribution, monitored at different interparticle distances, reflects both the nanoparticle heterogeneity and the fluorescence intermittency of the quantum dot. The fluorescence distribution emitted by single CdSe nanocrystals can easily be distinguished from the fluorescence of partially quenched CdSe. Our results show that the distance-dependence quenching is compatible with a Förster-type process.
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gueroui2004single-molecule Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Gueroui, Zoher;Libchaber, Albert;
Journal physical review letters
Year 2004
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