Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 7, Pages 2192-2197Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja108154a
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Funding
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [01-130130-00//W911NF-08-1-0143, DE-SC0000989]
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Dissociation of ionizable ligands immobilized on nanopaticles (NPs) depends on and can be regulated by the curvature of these particles as well as the size and the concentration of counterions. The apparent acid dissociation constant (pK(a)) of the NP-immobilized ligands lies between that of free ligands and ligands self-assembled on a flat surface. This phenomenon is explicitly rationalized by a theoretical model that accounts fully for the molecular details (size, shape, conformation, and charge distribution) of both the NPs and the counterions.
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