title: Surface chemistry of cadmium sulfide magic-sized clusters: a window into ligand-nanoparticle interactions.
abstract: Optoelectronic properties of nanoparticles are intimately coupled to the complex physiochemical interplay between the inorganic core and the organic ligand shell. Magic-sized clusters, which are predominately surface atoms, provide a promising avenue to clarify these critical surface interactions. Whereas these interactions impact the surface of both nanoparticles and magic-sized clusters, we show here that only clusters manifest a shift in the excitonic peak by up to 0.4 eV upon solvent or ligand treatment. These results highlight the utility of the clusters as a probe of ligand-surface interactions.
authors.affiliation: Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, USA. th358@cornell.edu.
authors.forename: Douglas R
authors.initials: DR
authors.lastname: Nevers
authors.affiliation: Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, USA. th358@cornell.edu.
authors.forename: Curtis B
authors.initials: CB
authors.lastname: Williamson
authors.affiliation: Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, USA. th358@cornell.edu.
authors.forename: Tobias
authors.initials: T
authors.lastname: Hanrath
authors.affiliation: Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA. rdr82@cornell.edu.
authors.forename: Richard D
authors.identifier: http://orcid.org/0000-0002-0385-2925
authors.initials: RD
authors.lastname: Robinson