Nevers Douglas R, Williamson Curtis B, Hanrath Tobias, Robinson Richard D
Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, USA.
Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA.
Chem Commun (Camb). 2017 Mar 2;53(19):2866-2869. doi: 10.1039/c6cc09549f.
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.
纳米粒子的光电特性与无机核和有机配体壳层之间复杂的物理化学相互作用紧密相关。主要由表面原子组成的魔法尺寸团簇为阐明这些关键的表面相互作用提供了一条很有前景的途径。虽然这些相互作用会影响纳米粒子和魔法尺寸团簇的表面，但我们在此表明，仅团簇在溶剂或配体处理后激子峰最多会有0.4 eV的位移。这些结果突出了团簇作为配体-表面相互作用探针的实用性。
