192. LIGAND EFFECTS ON PLATINUM NANOPARTICLE SYNTHESIS AND CATLAYTIC ACTIVITY

Department: NanoEngineering
Faculty Advisor(s): Jennifer Cha | Joseph Wang

Primary Student
Name: Lauren Marie Forbes
Email: lforbes@ucsd.edu
Phone: 310-750-5937
Grad Year: 2013

Abstract
While many different capping agents have been used to mediate the synthesis of platinum nanoparticles from polymers to biomolecules, the effect of the ligands' chemical structures on the growing nanoparticles and their catalytic activity is not yet fully understood. Understanding how chemical moieties affect platinum nanoparticle synthesis is an important step in the process of rationally designing ligands to produce platinum nanoparticles with desired sizes, shapes, and surface functionality. However, the individual functional groups do not interact with the growing nanoparticles in the same way as they do when they are attached to a polymer or biomolecule. Therefore, we attached them to the end of polyethylene glycol, an unreactive backbone, to maintain the overall structure of a larger molecule while still isolating the effects of the individual functional group on the morphology of the platinum particles and their catalytic activity towards oxygen reduction.

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