Circularly Polarized Luminescence of Curium: A New Characterization of the 5f Actinide Complexes
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- 作者：Ga-Lai Law ; Christopher M. Andolina ; Jide Xu ; Vinh Luu ; Philip X. Rutkowski ; Gilles Muller ; David K. Shuh ; John K. Gibson ; Kenneth N. Raymond
- 刊名：The Journal of the American Chemical Society
- 出版年：2012
- 出版时间：September 19, 2012
- 年：2012
- 卷：134
- 期：37
- 页码：15545-15549
- 全文大小：327K
- 年卷期：v.134,no.37(September 19, 2012)
- ISSN：1520-5126
文摘
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.