(121g) The Importance of Curvature At the Nano-Scale: How and Why Curvature Influences Self-Assembly

Authors: 
Walker, D. A., Northwestern University
Grzybowski, B., Northwestern University


While there has been significant progress in controlling the size, shape and properties of nanomaterials, their controlled assembly into nanostrucutres remains a significant challenge.  To date, many nanoparticles (NPs) of unusual shapes have been reported - but the role which curvature plays on the surface chemistry of these particles remains a mystery. We recently found that the pKa of carboxylic acids bound to the surface of NPs deviates drastically compared to values for free ligands in solution. Interestingly, simply by controlling the size/shape of a NP, one can control the degree of charge on charged NP surface, shift the redox potentials of ligands on a NP surface and more. A mixture of experimental and theoretical results will be presented.
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