Dependence of luminescent properties of lanthanide-based nanocomplexes on their interactions with surrounding molecules in aqueous suspensions

Olga E. Sarmanova; Sergey A. Burikov; Anna A. Fedyanina; Tatiana A. Dolenko

doi:10.1117/12.2573348

10 October 2020 Dependence of luminescent properties of lanthanide-based nanocomplexes on their interactions with surrounding molecules in aqueous suspensions

Olga E. Sarmanova, Sergey A. Burikov, Anna A. Fedyanina, Tatiana A. Dolenko

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Proceedings Volume 11554, Advanced Sensor Systems and Applications X; 1155402 (2020) https://doi.org/10.1117/12.2573348
Event: SPIE/COS Photonics Asia, 2020, Online Only

Abstract

Lanthanide-based nanocomplexes stand out among optical sensors since for them one can implement an up-conversion luminescence (UCL) mode. The property eliminates the problem of extraction of nanoprobe luminescent signal against the background of the biological system autoluminescence. However, the surrounding molecules in natural biological systems crucially affect the luminescent properties of upconversion nanoparticles (UCNP). The study focuses on the effect of salts, acids and biomacromolecules on luminescent properties of UCNP in aqueous suspensions. UCL spectra of the NaYF4:Yb/Tm nanocomplexes in the presence of various molecules excited by 980 nm laser radiation were analyzed. The mechanisms of interaction of the nanocomplexes with surrounding molecules in aqueous suspensions, as well as the nature of the influence of various chemical groups on the UCNPs luminescent properties are discussed. This study was supported by Russian Foundation for Basic Research (Project №18-02-01023).

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Citation Download Citation

Olga E. Sarmanova, Sergey A. Burikov, Anna A. Fedyanina, and Tatiana A. Dolenko "Dependence of luminescent properties of lanthanide-based nanocomplexes on their interactions with surrounding molecules in aqueous suspensions", Proc. SPIE 11554, Advanced Sensor Systems and Applications X, 1155402 (10 October 2020); https://doi.org/10.1117/12.2573348

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