Your browser doesn't support javascript.
loading
Efficient Hole Transfer from CdSe Quantum Dots Enabled by Oxygen-Deficient Polyoxovanadate-Alkoxide Clusters.
Cogan, Nicole M B; McClelland, Kevin P; Peter, Chari Y M; Carmenate Rodríguez, Chayan; Fertig, Alex A; Amin, Mitesh; Brennessel, William W; Krauss, Todd D; Matson, Ellen M.
Afiliación
  • Cogan NMB; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.
  • McClelland KP; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.
  • Peter CYM; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.
  • Carmenate Rodríguez C; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.
  • Fertig AA; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.
  • Amin M; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.
  • Brennessel WW; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.
  • Krauss TD; Department of Chemistry, University of Rochester, Rochester, New York 14627, United States.
  • Matson EM; Institute of Optics, University of Rochester, Rochester, New York 14627, United States.
Nano Lett ; 23(22): 10221-10227, 2023 Nov 22.
Article en En | MEDLINE | ID: mdl-37935022
A limitation of the implementation of cadmium chalcogenide quantum dots (QDs) in charge transfer systems is the efficient removal of photogenerated holes. Rapid hole transfer has typically required the ex situ functionalization of hole acceptors with groups that can coordinate to the surface of the QD. In addition to being synthetically limiting, this strategy also necessitates a competitive binding equilibrium between the hole acceptor and native, solubilizing ligands on the nanocrystal. Here we show that the incorporation of oxygen vacancies into polyoxovanadate-alkoxide clusters improves hole transfer kinetics by promoting surface interactions between the metal oxide assembly and the QD. Investigating the reactivity of oxygen-deficient clusters with phosphonate-capped QDs reveals reversible complexation of the POV-alkoxide with a phosphonate ligand at the nanocrystal surface. These findings reveal a new method of facilitating QD-hole acceptor association that bypasses the restrictions of exchange interactions.
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos