Heterometallic NIR-emitting nanothermometers by click-reaction between two lanthanide complexes

Heterobimetallic lanthanide conjugates were obtained by click-reaction between two monometallic lanthanide complexes with Schiff bases for the first time. For that, novel azido- and ethynyl-substituted ligands, as well as their lanthanide complexes, were obtained and characterised; two new crystal s...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2024-12, Vol.12 (48), p.19352-19358
Main Authors: Koshelev, Daniil. S, Medved'ko, Aleksei V, Goloveshkin, Alexander S, Nelubina, Yulia V, Maloshitskaya, Olga A, Safiullina, Elnara S, Gracheva, Yulia A, Nikitin, Evgeny A, Lepnev, Leonid S, Vatsadze, Sergey Z, Utochnikova, Valentina V
Format: Article
Language:English
Subjects:
Conjugates
Erbium
Imines
Ligands
Ytterbium
Online Access:Get full text
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Summary:Heterobimetallic lanthanide conjugates were obtained by click-reaction between two monometallic lanthanide complexes with Schiff bases for the first time. For that, novel azido- and ethynyl-substituted ligands, as well as their lanthanide complexes, were obtained and characterised; two new crystal structures were obtained. Click-reaction between ligands and complexes was performed, and the latter was demonstrated to result in the conjugates {Ln 1 -Ln 2 } formation. Among the obtained conjugates, {Yb-Nd} and {Yb-Er} demonstrated intense NIR emission with temperature sensitivity in the physiological range of up to 3%/K. For the first time, heterobimetallic conjugates were obtained by a click-reaction between lanthanide complexes with non-DOTA like ligands. NIR luminescent thermometers based on them were obtained.
ISSN:2050-7526
2050-7534
DOI:10.1039/d4tc03970j