Multifunctional Semiconductor Nanoheterostructures via Site-Selective Silica Encapsulation

Authors

  • Yang Xu,

    1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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  • Jie Lian,

    1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
    2. Institute for Materials Research & Engineering A*STAR, 3 Research Link, Singapore 117602, Singapore
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  • Nimai Mishra,

    1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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  • Yinthai Chan

    Corresponding author
    1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
    2. Institute for Materials Research & Engineering A*STAR, 3 Research Link, Singapore 117602, Singapore
    • Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
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Abstract

original image

Site-specific silica encapsulation of the CdSe core region of CdSe/CdS tetrapods is employed to allow for the fluorescence from the CdSe core to be preserved during the growth of secondary functional materials, which is exploited to achieve Ag2S-tipped SiO2-CdSe/CdS tetrapods with dual emission at visible and IR wavelengths and Au/FexOy-tipped SiO2-CdSe/CdS tetrapods which exhibits both fluorescence and a strong magnetic response.

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