Few-Atom Fluorescent Silver Clusters Assemble at Programmed Sites on DNA Nanotubes
Citations Over TimeTop 10% of 2012 papers
Abstract
We show that DNA hairpins template the site-specific assembly of fluorescent few-atom Ag clusters on DNA nanotubes. Fluorescent clusters form only at hairpin sites and not on the double-stranded DNA scaffold, allowing for spatially programmed self-assembly. Ag clusters synthesized on hairpins protruding from DNA nanotubes can have nearly identical fluorescence spectra to those synthesized on free hairpins of identical sequence. Analysis of the stepwise photobleaching of individual clusters suggests a chemical yield of ~45%. Given the well-established sequence-specific optical properties of DNA stabilized Ag clusters, these results point the way toward high yield assembly of metal cluster fluorophores with control over spectra as well as spatial arrangement.
Related Papers
- → A new fluorescent and colorimetric probe for Cu2+ in live cells(2012)53 cited
- → Indirect time-resolved fluorescence detection of both non-fluorescent and fluorescent compounds separated by high-performance liquid chromatography(1997)3 cited
- Fluorescence properties of 3-pyridin-3-yl-indolizines in different pH condition(2010)
- Synthesis and spectroscopic properties of new fluorescent probe compounds(2008)
- A Study on the Fluorescence Properties of Fluorescent Dyes on Polyester Fibrics(2004)