Luminescent PMMA Films and PMMA@SiO 2 Nanoparticles with Embedded Ln 3+ Complexes for Highly Sensitive Optical Thermometers in the Physiological Temperature Range**
| Autor: | Anna M. Kaczmarek, Flavia Artizzu, Anatolii Abalymov, Dimitrije Mara, Rik Van Deun, Andre G. Skirtach, Kristof Van Hecke |
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| Rok vydání: | 2021 |
| Předmět: |
Lanthanide
Chemistry Multidisciplinary inorganic hybrid composites Nanoparticle luminescent thermometry 010402 general chemistry 01 natural sciences Catalysis chemistry.chemical_compound lanthanides Thin film Triphenylphosphine oxide Science & Technology 010405 organic chemistry Organic Chemistry Doping General Chemistry Atmospheric temperature range Photon upconversion 0104 chemical sciences Chemistry thin films chemistry organic– Physical Sciences Physical chemistry nanoparticles Luminescence |
| Zdroj: | Chemistry – A European Journal. 27:6479-6488 |
| ISSN: | 1521-3765 0947-6539 |
| DOI: | 10.1002/chem.202004951 |
| Popis: | In recent years, luminescent materials doped with Ln3+ ions have attracted much attention for their application as optical thermometers based on both downshifting and upconversion processes. This study presents research done on the development of highly sensitive optical thermometers in the physiological temperature range based on poly(methyl methacrylate) (PMMA) films doped with two series of visible Ln3+ complexes (Ln3+ =Tb3+ , Eu3+ , and Sm3+ ) and SiO2 nanoparticles (NPs) coated with these PMMA films. The best performing PMMA film doped with Tb3+ and Eu3+ complexes was the PMMA[TbEuL1 tppo]1 film (L1 =4,4,4-trifluoro-1-phenyl-1,3-butadionate; tppo=triphenylphosphine oxide), which showed good temperature sensing of Sr =4.21 % K-1 at 313 K, whereas for the PMMA films doped with Tb3+ and Sm3+ complexes the best performing was the PMMA[TbSmL2 tppo]3 film (L2 =4,4,4-trifluoro-1-(4-chlorophenyl)-1,3-butadionate), with Sr =3.64 % K-1 at 313 K. Additionally, SiO2 NPs coated with the best performing films from each of the series of PMMA films (Tb-Eu and Tb-Sm) and their temperature-sensing properties were studied in water, showing excellent performance in the physiological temperature range (PMMA[TbEuL1 tppo]1@SiO2 : Sr =3.84 % °C at 20 °C; PMMA[TbSmL2 tppo]3@SiO2 : Sr =3.27 % °C at 20 °C) and the toxicity of these nanoparticles on human cells was studied, showing that they were nontoxic. ispartof: CHEMISTRY-A EUROPEAN JOURNAL vol:27 issue:21 pages:6479-6488 ispartof: location:Germany status: published |
| Databáze: | OpenAIRE |
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