Plasmonic nanohybrid with ultrasmall Ag nanoparticles and fluorescent dyes.
basic_science · Level V
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- Record sourced from PubMed, PMID 21534536.
- Also identified by DOI 10.1021/nn102717z.
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Abstract
We investigate a hybrid nanocomposite combining fluorescent dyes and ultrasmall (<3 nm) silver nanocrystals in a block copolymer micelle. Although the metal nanoparticles are significantly smaller than the electromagnetic skin depth, we observe a modification of the exciton lifetime and the nonradiative energy transfer among the dyes. This behavior is absent in a control experiment with dyes whose energetic levels are far from the plasmonic resonance, establishing the plasmonic nature of the interaction.
Medical subject headings
- Crystallization
- Fluorescent Dyes
- Gold
- Nanostructures
- Surface Plasmon Resonance