Sensitization, energy transfer and infra-red emission decay modulation in Yb3+-doped NaYF4 nanoparticles with visible light through a perfluoroanthraquinone chromophore
Abstract Infra-red emission (980 nm) of sub 10 nm Yb3+-doped NaYF4 nanoparticles has been sensitized through the excitation of 2-hydroxyperfluoroanthraquinone chromophore (1,2,3,4,5,6,7-heptafluro-8-hydroxyanthracene-9,10-dione) functionalizing the nanoparticle surface. The sensitization is achieved...
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doaj-600b39848f2a44e18cbb4d0dceb223a32020-12-08T02:40:24ZengNature Publishing GroupScientific Reports2045-23222017-07-017111010.1038/s41598-017-05350-9Sensitization, energy transfer and infra-red emission decay modulation in Yb3+-doped NaYF4 nanoparticles with visible light through a perfluoroanthraquinone chromophoreHaizhou Lu0Yu Peng1Huanqing Ye2Xianjin Cui3Jianxu Hu4Hang Gu5Andrei N. Khlobystov6Mark A. Green7Philip J. Blower8Peter B. Wyatt9William P. Gillin10Ignacio Hernández11State Key Laboratory of ASIC and System, SIST, Fudan UniversityMaterials Research Institute and School of Physics and Astronomy, Queen Mary University of LondonMaterials Research Institute and School of Physics and Astronomy, Queen Mary University of LondonSchool of Geography, Earth and Environmental Sciences, College of Life Science, University of BirminghamMaterials Research Institute and School of Physics and Astronomy, Queen Mary University of LondonMaterials Research Institute and School of Physics and Astronomy, Queen Mary University of LondonNanoscale & Microscale Research Centre (nmRC), University of Nottingham, University ParkDepartment of Physics, King’s College LondonDivision of Imaging Sciences and Biomedical Engineering, King’s College London, 4th Floor Lambeth Wing, St Thomas HospitalMaterials Research Institute and School of Biological and Chemical Sciences, Queen Mary University of LondonMaterials Research Institute and School of Physics and Astronomy, Queen Mary University of LondonDpto. CITIMAC, Universidad de Cantabria, Facultad de CienciasAbstract Infra-red emission (980 nm) of sub 10 nm Yb3+-doped NaYF4 nanoparticles has been sensitized through the excitation of 2-hydroxyperfluoroanthraquinone chromophore (1,2,3,4,5,6,7-heptafluro-8-hydroxyanthracene-9,10-dione) functionalizing the nanoparticle surface. The sensitization is achieved with a broad range of visible light excitation (400–600 nm). The overall near infra-red (NIR) emission intensity of Yb3+ ions is increased by a factor 300 as a result of the broad and strong absorption of the chromophore compared with ytterbium’s intrinsic absorption. Besides the Yb3+ NIR emission, the hybrid composite shows organic chromophore-based visible emission in the orange-red region of the spectrum. We observe the energy migration process from the sensitized Yb3+ ions at the surface to those in the core of the particle using time-resolved optical spectroscopy. This highlights that the local environments for emitting Yb3+ ions at the surface and center of the nanoparticle are not identical, which causes important differences in the NIR emission dynamics. Based on the understanding of these processes, we suggest a simple strategy to control and modulate the decay time of the functionalized Yb3+-doped nanoparticles over a relatively large range by changing physical or chemical parameters in this model system.https://doi.org/10.1038/s41598-017-05350-9 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Haizhou Lu Yu Peng Huanqing Ye Xianjin Cui Jianxu Hu Hang Gu Andrei N. Khlobystov Mark A. Green Philip J. Blower Peter B. Wyatt William P. Gillin Ignacio Hernández |
spellingShingle |
Haizhou Lu Yu Peng Huanqing Ye Xianjin Cui Jianxu Hu Hang Gu Andrei N. Khlobystov Mark A. Green Philip J. Blower Peter B. Wyatt William P. Gillin Ignacio Hernández Sensitization, energy transfer and infra-red emission decay modulation in Yb3+-doped NaYF4 nanoparticles with visible light through a perfluoroanthraquinone chromophore Scientific Reports |
author_facet |
Haizhou Lu Yu Peng Huanqing Ye Xianjin Cui Jianxu Hu Hang Gu Andrei N. Khlobystov Mark A. Green Philip J. Blower Peter B. Wyatt William P. Gillin Ignacio Hernández |
author_sort |
Haizhou Lu |
title |
Sensitization, energy transfer and infra-red emission decay modulation in Yb3+-doped NaYF4 nanoparticles with visible light through a perfluoroanthraquinone chromophore |
title_short |
Sensitization, energy transfer and infra-red emission decay modulation in Yb3+-doped NaYF4 nanoparticles with visible light through a perfluoroanthraquinone chromophore |
title_full |
Sensitization, energy transfer and infra-red emission decay modulation in Yb3+-doped NaYF4 nanoparticles with visible light through a perfluoroanthraquinone chromophore |
title_fullStr |
Sensitization, energy transfer and infra-red emission decay modulation in Yb3+-doped NaYF4 nanoparticles with visible light through a perfluoroanthraquinone chromophore |
title_full_unstemmed |
Sensitization, energy transfer and infra-red emission decay modulation in Yb3+-doped NaYF4 nanoparticles with visible light through a perfluoroanthraquinone chromophore |
title_sort |
sensitization, energy transfer and infra-red emission decay modulation in yb3+-doped nayf4 nanoparticles with visible light through a perfluoroanthraquinone chromophore |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2017-07-01 |
description |
Abstract Infra-red emission (980 nm) of sub 10 nm Yb3+-doped NaYF4 nanoparticles has been sensitized through the excitation of 2-hydroxyperfluoroanthraquinone chromophore (1,2,3,4,5,6,7-heptafluro-8-hydroxyanthracene-9,10-dione) functionalizing the nanoparticle surface. The sensitization is achieved with a broad range of visible light excitation (400–600 nm). The overall near infra-red (NIR) emission intensity of Yb3+ ions is increased by a factor 300 as a result of the broad and strong absorption of the chromophore compared with ytterbium’s intrinsic absorption. Besides the Yb3+ NIR emission, the hybrid composite shows organic chromophore-based visible emission in the orange-red region of the spectrum. We observe the energy migration process from the sensitized Yb3+ ions at the surface to those in the core of the particle using time-resolved optical spectroscopy. This highlights that the local environments for emitting Yb3+ ions at the surface and center of the nanoparticle are not identical, which causes important differences in the NIR emission dynamics. Based on the understanding of these processes, we suggest a simple strategy to control and modulate the decay time of the functionalized Yb3+-doped nanoparticles over a relatively large range by changing physical or chemical parameters in this model system. |
url |
https://doi.org/10.1038/s41598-017-05350-9 |
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