Heterogeneity in Cation Exchange Ag⁺ Doping of CdSe Nanocrystals.

ABSTRACT: Cation exchange is becoming extensively used for nanocrystal (NC) doping in order to produce NCs with unique optical and electronic properties. However, despite its ever-increasing use, the relationships between the cation exchange process, its doped NC products, and the resulting NC photophysics are not well characterized. For example, similar doping procedures on NCs with the same chemical compositions have resulted in quite different photophysics. Through a detailed single molecule investigation of a postsynthesis Ag⁺ doping of CdSe NCs, a number of species were identified within a single doped NC sample, suggesting the differences in the optical properties of the various synthesis methods are due to the varied contributions of each species. Electrostatic force microscopy (EF

SUBMITTER: Freyer A 

PROVIDER: S-EPMC10436366 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature