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

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.

SUBMITTER: Law GL

PROVIDER: S-EPMC3477521 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature

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

Law Ga-Lai GL Andolina Christopher M CM Xu Jide J Luu Vinh V Rutkowski Philip X PX Muller Gilles G Shuh David K DK Gibson John K JK Raymond Kenneth N KN

Journal of the American Chemical Society 20120911 37

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 (I ...[more]

PMID: 22920726

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