The Influence of Medium on Fluorescence Quenching of Colloidal Solutions of the Nd<sup>3+</sup>: LaF<sub>3</sub> Nanoparticles Prepared with HTMW Treatment
An original method was proposed to reduce the quenching of the NIR fluorescence of colloidal solutions of 0.1 at. % Nd<sup>3+</sup>: LaF<sub>3</sub> nanoparticles (NPs) synthesized by aqueous co-precipitation method followed by hydrothermal microwave treatment. For this, an a...
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MDPI AG
2022-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/21/3749 |
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| author | Elena Timofeeva Elena Orlovskaya Alexandr Popov Artem Shaidulin Sergei Kuznetsov Alexandr Alexandrov Oleg Uvarov Yuri Vainer Gleb Silaev Mihkel Rähn Aile Tamm Stanislav Fedorenko Yurii Orlovskii |
| author_facet | Elena Timofeeva Elena Orlovskaya Alexandr Popov Artem Shaidulin Sergei Kuznetsov Alexandr Alexandrov Oleg Uvarov Yuri Vainer Gleb Silaev Mihkel Rähn Aile Tamm Stanislav Fedorenko Yurii Orlovskii |
| author_sort | Elena Timofeeva |
| collection | DOAJ |
| description | An original method was proposed to reduce the quenching of the NIR fluorescence of colloidal solutions of 0.1 at. % Nd<sup>3+</sup>: LaF<sub>3</sub> nanoparticles (NPs) synthesized by aqueous co-precipitation method followed by hydrothermal microwave treatment. For this, an aqueous colloidal solution of NPs was precipitated by centrifugation and dissolved in the same volume of DMSO. The kinetics of static fluorescence quenching of Nd<sup>3+</sup> donors of doped NPs dispersed in two solvents was analyzed to determine and to compare the concentrations of OH- quenching acceptors uniformly distributed throughout the volume of the NPs. The dependences of the relative fluorescence quantum yield <i>φ</i> of colloidal solutions on the concentration of OH- groups in the NPs were calculated and were also used to determine concentration of acceptors in the volume of NPs in different solvents. It was found that the concentration of OH- groups in NPs dispersed in DMSO is almost two times lower than in NPs dispersed in water. This gives an almost two-fold increase in the relative fluorescence quantum yield <i>φ</i> for the former. The sizes of synthesized NPs were monitored by common TEM and by applying a rapid procedure based on optical visualization of the trajectories of the Brownian motion of NPs in solution using a laser ultramicroscope. The use of two different methods made it possible to obtain more detailed information about the studied NPs. |
| first_indexed | 2024-03-09T18:46:53Z |
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| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T18:46:53Z |
| publishDate | 2022-10-01 |
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| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-4b07b856090a466e8cef7246652e6efd2023-11-24T06:08:33ZengMDPI AGNanomaterials2079-49912022-10-011221374910.3390/nano12213749The Influence of Medium on Fluorescence Quenching of Colloidal Solutions of the Nd<sup>3+</sup>: LaF<sub>3</sub> Nanoparticles Prepared with HTMW TreatmentElena Timofeeva0Elena Orlovskaya1Alexandr Popov2Artem Shaidulin3Sergei Kuznetsov4Alexandr Alexandrov5Oleg Uvarov6Yuri Vainer7Gleb Silaev8Mihkel Rähn9Aile Tamm10Stanislav Fedorenko11Yurii Orlovskii12Prokhorov General Physics Institute of the Russian Academy of Sciences, Vavilov Str. 38, 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, Vavilov Str. 38, 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, Vavilov Str. 38, 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, Vavilov Str. 38, 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, Vavilov Str. 38, 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, Vavilov Str. 38, 119991 Moscow, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, Vavilov Str. 38, 119991 Moscow, RussiaInstitute of Spectroscopy of the Russian Academy of Sciences, Fizicheskaya Str. 5, Troitsk, 108840 Moscow, RussiaHigher School of Economics, National Research University, Myasnitskaya Str. 4, 101000 Moscow, RussiaInstitute of Physics, University of Tartu, W. Ostwaldi Str. 1, 50411 Tartu, EstoniaInstitute of Physics, University of Tartu, W. Ostwaldi Str. 1, 50411 Tartu, EstoniaVoevodsky Institute of Chemical Kinetics and Combustion SB RAS, Institutskaya Str. 3, 630090 Novosibirsk, RussiaProkhorov General Physics Institute of the Russian Academy of Sciences, Vavilov Str. 38, 119991 Moscow, RussiaAn original method was proposed to reduce the quenching of the NIR fluorescence of colloidal solutions of 0.1 at. % Nd<sup>3+</sup>: LaF<sub>3</sub> nanoparticles (NPs) synthesized by aqueous co-precipitation method followed by hydrothermal microwave treatment. For this, an aqueous colloidal solution of NPs was precipitated by centrifugation and dissolved in the same volume of DMSO. The kinetics of static fluorescence quenching of Nd<sup>3+</sup> donors of doped NPs dispersed in two solvents was analyzed to determine and to compare the concentrations of OH- quenching acceptors uniformly distributed throughout the volume of the NPs. The dependences of the relative fluorescence quantum yield <i>φ</i> of colloidal solutions on the concentration of OH- groups in the NPs were calculated and were also used to determine concentration of acceptors in the volume of NPs in different solvents. It was found that the concentration of OH- groups in NPs dispersed in DMSO is almost two times lower than in NPs dispersed in water. This gives an almost two-fold increase in the relative fluorescence quantum yield <i>φ</i> for the former. The sizes of synthesized NPs were monitored by common TEM and by applying a rapid procedure based on optical visualization of the trajectories of the Brownian motion of NPs in solution using a laser ultramicroscope. The use of two different methods made it possible to obtain more detailed information about the studied NPs.https://www.mdpi.com/2079-4991/12/21/3749aqueous colloidal solutions of Nd<sup>3+</sup>: LaF<sub>3</sub> nanocrystalshydrothermal microwave (HTMW) treatmentDMSO solventNIR fluorescence kineticsstatic fluorescence quenching on OH- acceptorsrelative fluorescence quantum yield |
| spellingShingle | Elena Timofeeva Elena Orlovskaya Alexandr Popov Artem Shaidulin Sergei Kuznetsov Alexandr Alexandrov Oleg Uvarov Yuri Vainer Gleb Silaev Mihkel Rähn Aile Tamm Stanislav Fedorenko Yurii Orlovskii The Influence of Medium on Fluorescence Quenching of Colloidal Solutions of the Nd<sup>3+</sup>: LaF<sub>3</sub> Nanoparticles Prepared with HTMW Treatment Nanomaterials aqueous colloidal solutions of Nd<sup>3+</sup>: LaF<sub>3</sub> nanocrystals hydrothermal microwave (HTMW) treatment DMSO solvent NIR fluorescence kinetics static fluorescence quenching on OH- acceptors relative fluorescence quantum yield |
| title | The Influence of Medium on Fluorescence Quenching of Colloidal Solutions of the Nd<sup>3+</sup>: LaF<sub>3</sub> Nanoparticles Prepared with HTMW Treatment |
| title_full | The Influence of Medium on Fluorescence Quenching of Colloidal Solutions of the Nd<sup>3+</sup>: LaF<sub>3</sub> Nanoparticles Prepared with HTMW Treatment |
| title_fullStr | The Influence of Medium on Fluorescence Quenching of Colloidal Solutions of the Nd<sup>3+</sup>: LaF<sub>3</sub> Nanoparticles Prepared with HTMW Treatment |
| title_full_unstemmed | The Influence of Medium on Fluorescence Quenching of Colloidal Solutions of the Nd<sup>3+</sup>: LaF<sub>3</sub> Nanoparticles Prepared with HTMW Treatment |
| title_short | The Influence of Medium on Fluorescence Quenching of Colloidal Solutions of the Nd<sup>3+</sup>: LaF<sub>3</sub> Nanoparticles Prepared with HTMW Treatment |
| title_sort | influence of medium on fluorescence quenching of colloidal solutions of the nd sup 3 sup laf sub 3 sub nanoparticles prepared with htmw treatment |
| topic | aqueous colloidal solutions of Nd<sup>3+</sup>: LaF<sub>3</sub> nanocrystals hydrothermal microwave (HTMW) treatment DMSO solvent NIR fluorescence kinetics static fluorescence quenching on OH- acceptors relative fluorescence quantum yield |
| url | https://www.mdpi.com/2079-4991/12/21/3749 |
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