Počet záznamů: 1
Chelation and stabilization of berkelium in oxidation state +IV
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SYSNO ASEP 0473906 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Chelation and stabilization of berkelium in oxidation state +IV Tvůrce(i) Deblonde, G. J.-P. (US)
Sturzbecher-Hoehne, M. (US)
Rupert, P. B. (US)
An, D. D. (US)
Illy, M.-C. (US)
Ralston, C. Y. (US)
Brabec, Jiří (UFCH-W) RID, ORCID
de Jong, W. A. (US)
Strong, R. K. (US)
Abergel, R. J. (US)Zdroj.dok. Nature Chemistry. - : Nature Publishing Group - ISSN 1755-4330
Roč. 9, č. 9 (2017), s. 843-849Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova bioorganic chemistry ; chemical bonding ; mass spectrometry Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000408323300006 EID SCOPUS 85028319998 DOI 10.1038/nchem.2759 Anotace Berkelium (Bk) has been predicted to be the only transplutonium element able to exhibit both +III and +IV oxidation states in solution, but evidence of a stable oxidized Bk chelate has so far remained elusive. Here we describe the stabilization of the heaviest 4+ ion of the periodic table, under mild aqueous conditions, using a siderophore derivative. The resulting Bk(IV) complex exhibits luminescence via sensitization through an intramolecular antenna effect. This neutral Bk(IV) coordination compound is not sequestered by the protein siderocalin—a mammalian metal transporter—in contrast to the negatively charged species obtained with neighbouring trivalent actinides americium, curium and californium (Cf). The corresponding Cf(III)–ligand–protein ternary adduct was characterized by X-ray diffraction analysis. Combined with theoretical predictions, these data add significant insight to the field of transplutonium chemistry, and may lead to innovative Bk separation and purification processes. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2018
Počet záznamů: 1