New Strategy Based on Click Reaction for Preparation of 3-Acyl-4-hydroxycoumarin-Modified Silica as a Perspective Material for the Separation of Rare Earth Elements.

Dzhamilya N Konshina, Ekaterina S Spesivaya, Ida A Lupanova, Anton S Mazur, Valery V Konshin

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Article in Molecules (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 authors.

Dzhamilya N KonshinaDepartment of Chemistry and High Technologies, Kuban State University, 149 Stavropolskaya Str., 350040 Krasnodar, Russia.ORCID 0000-0001-6271-6563

Ekaterina S SpesivayaDepartment of Chemistry and High Technologies, Kuban State University, 149 Stavropolskaya Str., 350040 Krasnodar, Russia.ORCID 0000-0002-0383-2916

Ida A LupanovaDepartment of Chemistry and High Technologies, Kuban State University, 149 Stavropolskaya Str., 350040 Krasnodar, Russia.ORCID 0000-0003-4931-2032

Anton S MazurCenter for Magnetic Resonance, Saint Petersburg State University, 198504 St. Petersburg, Russia.ORCID 0000-0002-2746-6762

Valery V KonshinDepartment of Chemistry and High Technologies, Kuban State University, 149 Stavropolskaya Str., 350040 Krasnodar, Russia.ORCID 0000-0003-1864-531X

Funding

Ministry of Science and Higher Education of the Russian Federation FZEN-2023-0006St. Petersburg State University 125021702335-5

6 · The paper itself

Abstract

The separation of rare earth elements (REEs) with similar chemical properties remains a relevant challenge today, most often addressed using liquid-liquid and solid-phase extraction with various chelating agents. Excellent complexing agents for REEs are 1,3-diketones and their analogs. We have for the first time proposed a method for preparing a material consisting of a covalently immobilized 3-acyl-4-hydroxycoumarin ligand on silica. For its synthesis, we employed a strategy based on the "click" reaction of 3-azidopropyl silica with a propargyl-containing coumarin-chalcone conjugate-this approach is the most tolerant and does not affect the coordinationally active fragment of the ligand. The material was characterized by thermal analysis, IR spectroscopy, and

Indexed as

3-acyl-4-hydroxycoumarinpreconcentrationrare earth elementssilica

Identifiers

PMID41599416

DOI10.3390/molecules31020369

PMCPMC12844081

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