1
|
Sturzbecher-Hoehne M, Yang P, D'Aléo A, Abergel RJ. Intramolecular sensitization of americium luminescence in solution: shining light on short-lived forbidden 5f transitions. Dalton Trans 2018; 45:9912-9. [PMID: 26961598 DOI: 10.1039/c6dt00328a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The photophysical properties and solution thermodynamics of water soluble trivalent americium (Am(III)) complexes formed with multidentate chromophore-bearing ligands, 3,4,3-LI(1,2-HOPO), Enterobactin, and 5-LIO(Me-3,2-HOPO), were investigated. The three chelators were shown to act as antenna chromophores for Am(III), generating sensitized luminescence emission from the metal upon complexation, with very short lifetimes ranging from 33 to 42 ns and low luminescence quantum yields (10(-3) to 10(-2)%), characteristic of Near Infra-Red emitters in similar systems. The specific emission peak of Am(III) assigned to the (5)D1 → (7)F1 f-f transition was exploited to characterize the high proton-independent stability of the complex formed with the most efficient sensitizer 3,4,3-LI(1,2-HOPO), with a log β110 = 20.4 ± 0.2 value. In addition, the optical and solution thermodynamic features of these Am(III) complexes, combined with density functional theory calculations, were used to probe the influence of electronic structure on coordination properties across the f-element series and to gain insight into ligand field effects.
Collapse
Affiliation(s)
- M Sturzbecher-Hoehne
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| | - P Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
| | - A D'Aléo
- Aix Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France.
| | - R J Abergel
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
| |
Collapse
|
3
|
Sturzbecher-Hoehne M, Goujon C, Deblonde GJP, Mason AB, Abergel RJ. Sensitizing curium luminescence through an antenna protein to investigate biological actinide transport mechanisms. J Am Chem Soc 2013; 135:2676-83. [PMID: 23363005 DOI: 10.1021/ja310957f] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Worldwide stocks of actinides and lanthanide fission products produced through conventional nuclear spent fuel are increasing continuously, resulting in a growing risk of environmental and human exposure to these toxic radioactive metal ions. Understanding the biomolecular pathways involved in mammalian uptake, transport and storage of these f-elements is crucial to the development of new decontamination strategies and could also be beneficial to the design of new containment and separation processes. To start unraveling these pathways, our approach takes advantage of the unique spectroscopic properties of trivalent curium. We clearly show that the human iron transporter transferrin acts as an antenna that sensitizes curium luminescence through intramolecular energy transfer. This behavior has been used to describe the coordination of curium within the two binding sites of the protein and to investigate the recognition of curium-transferrin complexes by the cognate transferrin receptor. In addition to providing the first protein-curium spectroscopic characterization, these studies prove that transferrin receptor-mediated endocytosis is a viable mechanism of intracellular entry for trivalent actinides such as curium and provide a new tool utilizing the specific luminescence of curium for the determination of other biological actinide transport mechanisms.
Collapse
Affiliation(s)
- Manuel Sturzbecher-Hoehne
- Chemical Sciences Division, The Glenn T. Seaborg Center, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | | | | | | | | |
Collapse
|
4
|
Ikeda A, Yaita T, Okamoto Y, Shiwaku H, Suzuki S, Suzuki T, Fujii Y. Extended X-ray Absorption Fine Structure Investigation of Adsorption and Separation Phenomena of Metal Ions in Organic Resin. Anal Chem 2007; 79:8016-23. [DOI: 10.1021/ac070700n] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Atsushi Ikeda
- Synchrotron Radiation Research Center (SPring-8), Japan Atomic Energy Agency, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan, and Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo 152-8550, Japan
| | - Tsuyoshi Yaita
- Synchrotron Radiation Research Center (SPring-8), Japan Atomic Energy Agency, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan, and Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo 152-8550, Japan
| | - Yoshihiro Okamoto
- Synchrotron Radiation Research Center (SPring-8), Japan Atomic Energy Agency, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan, and Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo 152-8550, Japan
| | - Hideaki Shiwaku
- Synchrotron Radiation Research Center (SPring-8), Japan Atomic Energy Agency, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan, and Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo 152-8550, Japan
| | - Shinichi Suzuki
- Synchrotron Radiation Research Center (SPring-8), Japan Atomic Energy Agency, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan, and Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo 152-8550, Japan
| | - Tatsuya Suzuki
- Synchrotron Radiation Research Center (SPring-8), Japan Atomic Energy Agency, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan, and Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo 152-8550, Japan
| | - Yasuhiko Fujii
- Synchrotron Radiation Research Center (SPring-8), Japan Atomic Energy Agency, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan, and Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo 152-8550, Japan
| |
Collapse
|
5
|
Zhou J, Liu X, Zhang Y, Li B, Zhang Y. Synthesis, structures and luminescent properties of two silver supramolecular isomers with one-dimensional concavo-convex chain and dimer metallacycle. INORG CHEM COMMUN 2006. [DOI: 10.1016/j.inoche.2005.11.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
7
|
Lin XJ, Shen Z, Xu HJ, Li YZ, Zhang HT, You XZ. A binuclear tetrahedral zinc(II) complex of 2-(2-pyridyl)benzo[1,2-d;4,5-d′]diimidazole with strong blue fluorescence. INORG CHEM COMMUN 2004. [DOI: 10.1016/j.inoche.2004.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|