Efficient quenching of TGA-capped CdTe quantum dot emission by a surface-coordinated europium(III) cyclen complex

Inorg Chem. 2013 Apr 15;52(8):4133-5. doi: 10.1021/ic3027623. Epub 2013 Mar 25.

Abstract

Extremely efficient quenching of the excited state of aqueous CdTe quantum dots (QDs) by photoinduced electron transfer to a europium cyclen complex is facilitated by surface coordination to the thioglycolic acid capping ligand. The quenching dynamics are elucidated using steady-state emission and picosecond transient absorption.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cadmium Compounds / chemistry*
  • Coordination Complexes / chemistry*
  • Cyclams
  • Electrons
  • Europium / chemistry*
  • Heterocyclic Compounds / chemistry*
  • Luminescence
  • Quantum Dots*
  • Surface Properties
  • Tellurium / chemistry*
  • Thioglycolates / chemistry*

Substances

  • Cadmium Compounds
  • Coordination Complexes
  • Cyclams
  • Heterocyclic Compounds
  • Thioglycolates
  • Europium
  • 2-mercaptoacetate
  • cyclen
  • Tellurium
  • cadmium telluride