Sensitization of ultra-long-range excited-state electron transfer by energy transfer in a polymerized film

Proc Natl Acad Sci U S A. 2012 Sep 18;109(38):15132-5. doi: 10.1073/pnas.1213646109. Epub 2012 Sep 4.

Abstract

Distance-dependent energy transfer occurs from the Metal-to-Ligand Charge Transfer (MLCT) excited state Ru(bpy)3(2+*) to an anthracene-acrylate derivative (Acr-An) incorporated into the polymer network of a semirigid poly(ethyleneglycol)dimethacrylate monolith. Following excitation, Ru(bpy)3(2+*) to Acr-An triplet energy transfer occurs followed by long-range, Acr-(3)An-Acr-An → Acr-An-Acr-(3)An, energy migration. With methyl viologen dication (MV(2+)) added as a trap, Acr-(3)An + MV(2+) → Acr-An(+) + MV(+) electron transfer results in sensitized electron transfer quenching over a distance of approximately 90 Å.

Publication types

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

MeSH terms

  • Acrylates / chemistry
  • Anthracenes / chemistry
  • Electrons
  • Energy Transfer
  • Kinetics
  • Luminescence
  • Models, Chemical
  • Models, Statistical
  • Molecular Structure
  • Photochemistry / methods
  • Polyethylene Glycols / chemistry
  • Polymers / chemistry*
  • Ruthenium / chemistry
  • Spectrophotometry / methods
  • Time Factors

Substances

  • Acrylates
  • Anthracenes
  • Polymers
  • Polyethylene Glycols
  • Ruthenium
  • acrylic acid