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

Abstract

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.