Stepwise Thermal and Photothermal Dissociation of a Hierarchical Superaggregate of DNA-Functionalized Gold Nanoparticles

Stepwise Thermal and Photothermal Dissociation of a Hierarchical Superaggregate of DNA-Functionalized Gold Nanoparticles

Hierarchical superaggregates consisting of DNA‐linked 14 nm AuNPs are synthesized and characterized by optical and scattering methods. Temperature changes, induced either thermally or photothermally, lead to a switching between specific sizes associated with superaggregates, primary networks, and in...

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Veröffentlicht in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2011-05, Vol.7 (10), p.1397-1402
Hauptverfasser: Buchkremer, Anne, Linn, Malte J., Reismann, Maximilian, Eckert, Thomas, Witten, Katrin G., Richtering, Walter, von Plessen, Gero, Simon, Ulrich
Format: Artikel
Sprache:eng
Schlagworte:
DNA
DNA - chemistry
Gold - chemistry
gold nanoparticles
lasers
Light
Metal Nanoparticles - chemistry
Nucleic Acid Conformation
photothermal effects
Scattering, Small Angle
Spectrum Analysis
superaggregates
Temperature
X-Ray Diffraction
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Zusammenfassung:Hierarchical superaggregates consisting of DNA‐linked 14 nm AuNPs are synthesized and characterized by optical and scattering methods. Temperature changes, induced either thermally or photothermally, lead to a switching between specific sizes associated with superaggregates, primary networks, and individual nanoparticles. This could be of interest in the design of stimuli‐responsive materials.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.201002324