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    Water-ultrastable perovskite CsPbBr3 nanocrystals for fluorescence-enhanced cellular imaging

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    Type
    Article
    Authors
    He, Cai Li
    Meng, Zi Qi
    Ren, Shu Xia
    Li, Jian
    Wang, Ye
    Wu, Hao
    Bu, Hui
    Zhang, Yu
    Hao, Wei Zhong
    Chen, Shu Lin
    Yan, Rong Rong
    Liu, Huan
    Zhu, Yu Fang
    Zhao, Jin Jin cc
    KAUST Department
    Physical Science and Engineering (PSE) Division
    KAUST Catalysis Center (KCC)
    Date
    2023-02-28
    Embargo End Date
    2024-02-28
    Permanent link to this record
    http://hdl.handle.net/10754/690059
    
    Metadata
    Show full item record
    Abstract
    Metal halide perovskites have attracted much attention in biomedicine because of their excellent fluorescence energy conversion properties; however, poor water-stability and cytotoxicity limit its applications as a biomedical tracer, especially in cellular imaging. Herein, water-ultrastable perovskites CsPbBr3:Cs4PbBr6 nanocrystals (NCs) encapsulated in chitosan are fabricated successfully using a water-triggered method. The as-synthesized CsPbBr3:Cs4PbBr6@CS (chitosan, CS) nanoparticles in water display enhanced fluorescence emission for 35 days. Further, the viability of glioma cells (U87 cells) incubated with different concentrations of CsPbBr3:Cs4PbBr6@CS nanoparticles (0–20 μg·ml−1) for 24 h is found to be higher than 90%. In artificial body fluid, analyses using laser confocal microscopy, the standard Cell Counting Kit-8 (CCK-8) method, and flow cytometry demonstrated the good water ultrastability and high biocompatibility performance of CsPbBr3:Cs4PbBr6@CS nanoparticles in cellular imaging. Overall, the water-ultrastable halide perovskites support promising perspectives in biological cell tracing and intelligent medical technology.
    Citation
    He, C.-L., Meng, Z.-Q., Ren, S.-X., Li, J., Wang, Y., Wu, H., Bu, H., Zhang, Y., Hao, W.-Z., Chen, S.-L., Yan, R.-R., Liu, H., Zhu, Y.-F., & Zhao, J.-J. (2023). Water-ultrastable perovskite CsPbBr3 nanocrystals for fluorescence-enhanced cellular imaging. Rare Metals. https://doi.org/10.1007/s12598-022-02222-8
    Sponsors
    This work was financially supported by the National Natural Science Foundation of China (Nos. U2130128 and 11772207), the Natural Science Foundation of Hebei Province (Nos. A2019210204 and H2022205047), the Central Government Guiding Local Science and Technology Development Project (No. 216Z4302G), the Natural Science Foundation of Hebei Education Department (No. ZD2020192), the Youth Top-notch Talents Supporting Plan of Hebei Province, National Key Research and Development Program of China (No. 2016YFC0904503) and Hebei Administration for Market Supervision Science and Technology Project List (2023ZC03). The authors gratefully acknowledge the Electron Microscopy Laboratory at Peking University for the use of electron microscopes.
    Publisher
    Springer Science and Business Media LLC
    Journal
    Rare Metals
    DOI
    10.1007/s12598-022-02222-8
    Additional Links
    https://link.springer.com/10.1007/s12598-022-02222-8
    ae974a485f413a2113503eed53cd6c53
    10.1007/s12598-022-02222-8
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; KAUST Catalysis Center (KCC)

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