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Updated: Mar 8, 2026

Correlative Light- and Electron Microscopy Using Quantum Dot Nanoparticles
Published on: August 7, 2016
Photo-electrochemical properties of quantum rods studied by scanning electrochemical microscopy
Sébastien Lhenry1, Benoît Boichard1, Yann R Leroux1
1Institut des Sciences Chimiques de Rennes, CNRS, Université de Rennes 1, UMR 6226 (Equipe MaCSE), Campus de Beaulieu, 35042 Rennes Cedex, France. valerie.marchi@univ-rennes1.fr philippe.hapiot@univ-rennes1.fr.
Abstract:
Scanning electrochemical microscopy (SECM) is used for studying the intrinsic photo-electrochemical properties of CdSe/CdS quantum rods. They are deposited on a transparent and non-conductive glass plate and investigated by SECM in feedback and generator-collector modes using a series of redox mediators. The method allows the interrogation of the quantum rods under illumination without the interference of the substrate, notably that due to the electron photo-ejection from the substrate, a process that is inherent to any polarized electrode material. Beside the methodological demonstration that could easily be extended to the investigations of the photo-redox properties of nanoparticles, studies highlight the strong reductive properties of quantum rods under illumination.

