Charge transfer dynamics between photoexcited CdS nanorods and mononuclear Ru water-oxidation catalysts

J Am Chem Soc. 2013 Mar 6;135(9):3383-6. doi: 10.1021/ja400178g. Epub 2013 Feb 25.


We describe the charge transfer interactions between photoexcited CdS nanorods and mononuclear water oxidation catalysts derived from the [Ru(bpy)(tpy)Cl](+) parent structure. Upon excitation, hole transfer from CdS oxidizes the catalyst (Ru(2+) → Ru(3+)) on a 100 ps to 1 ns timescale. This is followed by 10-100 ns electron transfer (ET) that reduces the Ru(3+) center. The relatively slow ET dynamics may provide opportunities for the accumulation of multiple holes at the catalyst, which is necessary for water oxidation.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Cadmium Compounds / chemistry*
  • Catalysis
  • Molecular Structure
  • Nanotubes / chemistry*
  • Organometallic Compounds / chemistry*
  • Oxidation-Reduction
  • Particle Size
  • Photochemical Processes
  • Ruthenium / chemistry*
  • Sulfides / chemistry*
  • Surface Properties
  • Thermodynamics*
  • Water / chemistry


  • Cadmium Compounds
  • Organometallic Compounds
  • Sulfides
  • cadmium sulfide
  • Water
  • Ruthenium