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Malte S. Strozyk, Munish Chanana, Isabel Pastoriza-Santos, Jorge Pérez-Juste and Luis M. Liz-Marzán Protein/Polymer-Based Dual-Responsive Gold Nanoparticles with pH-Dependent Thermal Sensitivity Advanced Functional Materials 22

Version of Record online: 30 JAN 2012 | DOI: 10.1002/adfm.201102471

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Protein-coated gold nanoparticles (NPs) grafted with thermosensitive polymer brushes behave as truly smart dual-responsive materials. Proteins are naturally pH-sensitive and confer reversible U-shaped pH-responsive properties to the particles, whereas polymer brushes of oligo(ethylene glycol) methacrylates grafted by means of surface-initiated atom transfer radical polymerization add fully reversible thermoresponsive properties to the nanoparticles. Such Au@protein-g-polymer NPs exhibit pH-dependent thermoresponsive behavior with reversible optical properties.

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