Jump up and down: EPR spectroscopy was used to monitor hopping of spin-labeled ligands between Au nanoparticles. The slow interparticle exchange affects approximately 20 % of the binding sites on the nanoparticle surface. The kinetic analysis showed that this reaction follows a dissociative mechanism with ligand desorption in the rate-determining step. EPR=electron paramagnetic resonance.
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Zachary et al. (2007) studied this question.
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