Sensitive Cu2+ detection by reversible on-off fluorescence using Eu3+ complexes in SiO2, in chitosan/polyethylene oxide nanofibers

    April 2021 in “ Materials & Design ”
    Xiaozhen Wang, Yanxin Wang, Yanxin Wang, Linjun Huang, Bingyang Li, Xianhang Yan, Zhenzhen Huang, Yao Wang, Yao Wang, Matt J. Kipper, Jianguo Tang
    TLDR The material can detect low levels of copper ions in the body.
    This study investigated the use of luminescent europium complexes for detecting Cu2+ ions, utilizing [Eu3+(TTA)3phen] complexes encapsulated in silica nanoparticles and incorporated into chitosan/polyethylene oxide nanofibers. The combination enhanced fluorescence performance, allowing for sensitive detection of Cu2+ concentrations as low as 10 μmol/L. The material's composition made it suitable for detecting copper ions in biological systems, highlighting its potential application in monitoring heavy metal ion levels in the human body.
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