New hydrophilic triple-charged cationic receptors for binding pertechnetate and perrenate anions in acidic aqueous solutions.

Authors

Yuri A Ustynyuk, Igor P Gloriozov, Zoia A Sizova, Nelly I Zhokhova, Alisultan R Alisultanov, Anna Yu Fominykh, Uliana M Leksina, Petr I Matveev, Alexander V Gopin, Vladimir G Petrov, Victor A Tafeenko, Valentine G Nenajdenko

Published in

Dalton transactions (Cambridge, England : 2003). Oct 16, 2026. Epub Oct 16, 2026.

Abstract

One of the most complex and still unresolved problems in spent nuclear fuel (SNF) reprocessing is the separation of ⁹⁹Tc (a β-emitter, t_½ = 2.13 × 10⁵ years). Technetium is one of the most environmentally hazardous radionuclides contained in SNF in the form of the pertechnetate anion TcO₄^-. Many researchers around the world have been working for the past 30 years to create highly selective molecular receptors for its binding in aqueous solutions. In this study, we synthesized and thoroughly characterized a large series of new receptors containing three cationic pyridinium moieties. The structures of these compounds and their complexes with TcO₄^- and ReO₄^- anions were studied using a combination of physicochemical methods (X-ray diffraction, NMR, and mass spectrometry) coupled with quantum-chemical modeling based on density functional theory (DFT). Extraction tests of the new receptors showed that they effectively suppress TcO₄^- transfer into the organic phase during uranium and plutonium extraction using both the TODGA/F-3 and TBP/kerosene systems, opening up prospects for their use as hydrophobic masking agents for TcO₄^- binding in nitric acid during SNF reprocessing.

PMID:
42885474
Bibliographic data and abstract were imported from PubMed on 16 Oct 2026.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.