Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 127, Issue 13, Pages 4930-4934Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja0435900
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Platinum dendrimer-encapsulated nanoparticles (DENS) were prepared within fourth-generation, hydroxyl-terminated, poly(amidoamine) dendrimers and immobilized on glassy carbon electrodes using an electrochemical coupling strategy. X-ray photoelectron spectroscopy, electron microscopy, and electrochemical experiments confirmed that the Pt DENS were about 1.4 nm in diameter and that they remained within the dendrimer following surface immobilization. The resulting Pt DEN films were electrocatalytically active for the oxygen reduction reaction. The films were also robust, surviving up to 50 consecutive cyclic voltammograms and sonication.
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