Optical–magnetic bifunctional properties and mechanistic insights on upconversion of NaYF4:Yb,Ho,Tm@NaGdF4 with a tunable nanodumbbell morphology

Literature Information

Publication Date 2017-11-07
DOI 10.1039/C7CP05011A
Impact Factor 3.676
Authors

Zhichao Yu, Haifeng Zhou, Guangjun Zhou, Juan Zhou, Yaqiang Wu, Xingshuang Zhang, Tao Wang, Dapeng Huang, Xinqiang Wang, Jifan Hu


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Abstract

The energy-upconversion of lanthanide-doped nanoparticles with a core–shell structure can be utilized to enhance and tune optical properties and can generate multifunctionality in a single system. Herein, the core–shell nanoparticles NaYF4:Yb,Ho,Tm@NaGdF4 were prepared by thermally decomposing lanthanide acetylacetonate precursors. Through modifying the molar ratio of the core and shell, nanodumbbell-shaped particles with different sizes and morphologies were precisely synthesized. The formation mechanism and the heterogeneous epitaxial growth process of the nanodumbbell-shaped particles were studied. After coating the shell layer, upconversion luminescence intensities, spectral purity and fluorescence lifetimes were improved. Furthermore, the magnetic performance of the core–shell nanoparticles was characterized. The optical–magnetic bifunctional upconversion core–shell particles with programmable shape and multiple properties provide an ideal platform for the preparation of nanodumbbell-shaped particles and the promotion of upconversion materials for biomedical research.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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