Molecular Engineering of Ruthenium(II) Complexes with (3-Polyamino)phenanthroline Ligands for Developing Reusable Optical Sensors for Cu(II) ions

Abel, A.S.; Cheprakov, A.V.; Averin, A.; Beletskaya, I.P.; Meyer, M.; Brandès, S.; Laly, M.; Bessmertnykh-Lemeune, A.; Rigolet, S.

Авторы: Abel Anton S., Cheprakov Andrei Vladimirovich, Averin Alexei, Beletskaya Irina P., Meyer Michel, Brandès Stéphane, Laly Myriam, Bessmertnykh-Lemeune Alla, Rigolet Severinne
Журнал: Journal of Materials Chemistry С
Том: 10
Номер: 45
Год издания: 2022
Издательство: Royal Society of Chemistry
Местоположение издательства: United Kingdom
Первая страница: 17266
Последняя страница: 17280
DOI: 10.1039/D2TC03764E
Аннотация: This work is aimed at the development of synthetic approaches to luminescent hybrid organic-inorganic materials based on chemosensors bearing phosphonate anchoring groups for detection of toxic metal ions in aqueous solutions. To that end, sensing properties of phosphonate-substituted ruthenium(II) complex with (3-polyamino)phenanthroline Ru(N3P3phen) towards toxic metal ions in aqueous media at physiological pH was investigated and compared to those of known dual-channel (spectrophotometry and luminescence) selective chemosensor Ru(N2P2phen) for copper(II) ion. The Ru(N3P3phen) complex enables only to detect copper(II) by luminescence measurements but is much more sensitive (limit of detection (LOD) is 0.02 M) than Ru(N2P2phen). The main advantage of the chemosensors Ru(N2P2phen) and Ru(N3P3phen) studied herein is the possibility to immobilize them on titanium oxide surfaces without extra-synthetic costs using phosphonate substituents as anchoring groups. After activation with TMSBr, both complexes were successfuly grafted on hydrated mesoporous TiO2 (SBET = 650 m2/g) performing reactions in DMF solutions at room temperature. Strong covalent binding of chemosensors Ru(N2P2phen) and Ru(N3P3phen) to the mesoporous TiO2 support provides high chemical stability to the functionalized solids Ru(N2P2phen)@TiO2 and Ru(N3P3phen)@TiO2 but only one of them gives an optical response in the presence of copper(II) ions. The Ru(N3P3phen)@TiO2 material thus prepared allows for the luminescent detection of cupric ions in aqueous solutions displaying LOD lower than 10–13 M. Such a high sensitivity is unprecedented and cannot be obtained using soluble chemosensors in solutions. This solid-state sensor can be regenerated and reused at least three times.
Добавил в систему: Абель Антон Сергеевич

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Molecular Engineering of Ruthenium(II) Complexes with (3-Polyamino)phenanthroline Ligands for Developing Reusable Optical Sensors for Cu(II) ionsстатья

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