Circularly polarized luminescence of curium: a new characterization of the 5f actinide complexes

J Am Chem Soc. 2012 Sep 19;134(37):15545-9. doi: 10.1021/ja306354n. Epub 2012 Sep 11.

Abstract

A key distinction between the lanthanide (4f) and the actinide (5f) transition elements is the increased role of f-orbital covalent bonding in the latter. Circularly polarized luminescence (CPL) is an uncommon but powerful spectroscopy which probes the electronic structure of chiral, luminescent complexes or molecules. While there are many examples of CPL spectra for the lanthanides, this report is the first for an actinide. Two chiral, octadentate chelating ligands based on orthoamide phenol (IAM) were used to complex curium(III). While the radioactivity kept the amount of material limited to micromole amounts, spectra of the highly luminescent complexes showed significant emission peak shifts between the different complexes, consistent with ligand field effects previously observed in luminescence spectra.

Publication types

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

MeSH terms

  • Actinoid Series Elements / chemistry*
  • Curium / chemistry*
  • Luminescence
  • Spectrometry, Mass, Electrospray Ionization

Substances

  • Actinoid Series Elements
  • Curium