• Medientyp: E-Artikel
  • Titel: Ultrafast Charge Separation at the CdSe Quantum Dot/Methylviologen Interface: Dependence on Electron Acceptor Concentration
  • Beteiligte: Dworak, Lars; Wachtveitl, Josef
  • Erschienen: Walter de Gruyter GmbH, 2011
  • Erschienen in: Zeitschrift für Physikalische Chemie
  • Sprache: Englisch
  • DOI: 10.1524/zpch.2011.0105
  • ISSN: 2196-7156; 0942-9352
  • Schlagwörter: Physical and Theoretical Chemistry
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  • Beschreibung: <jats:title>Abstract</jats:title> <jats:p>Photoinduced charge transfer dynamics between CdSe semiconductor quantum dots (QDs) and the molecular acceptor methylviologen (MV<jats:sup>2+</jats:sup>) were investigated by time resolved absorption spectroscopy. Biexponential behavior of the charge separation is observed and explained by different donor states involved in the electron transfer reaction. Furthermore, we found a linear dependence of the amplitude weighted average electron transfer rate &lt;<jats:italic>k</jats:italic> <jats:sub>ET</jats:sub>&gt; on the electron acceptor concentration until a methylviologen saturation limit is reached.</jats:p>