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Enhanced Multifunctional Properties of Graphene Nanocomposites with Nacre-Like Structures

Authors

  • Liang Yan,

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
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  • Ya-Nan Chang,

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
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  • Wenyan Yin,

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
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  • Gan Tian,

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
    2. College of Chemistry, Sichuan University, Chengdu, China
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  • Liangjun Zhou,

    1. College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, China
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  • Zhongbo Hu,

    1. College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, China
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  • Gengmei Xing,

    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
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  • Zhanjun Gu,

    Corresponding author
    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
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  • Yuliang Zhao

    Corresponding author
    1. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
    2. CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanosciences and Technology of China, Beijing, China
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  • This work was supported by National Basic Research Programs of China (973 program, no. 2012CB932504 and 2011CB9334903), National Natural Science Foundation of China (no. 21001108 and 21177128).
  • Supporting Information is available online from Wiley Online Library or from the author.

Abstract

Filler of inorganic nanocrystals is an efficient way to greatly enhance the functional performance of graphene-based nanocomposites or to create new properties of graphene materials. However, it remains a challenge because the fabrication of such nanocomposites may decline or even lose the functional properties of the constituents during the hybridization process. In this work, a new class of multifunctional nanocomposites incorporating Fe3O4 magnetic nanocrystals (MNCs) and NaYF4:Yb,Er upconversion nanocrystals (UCNCs) within graphene oxide (GO) matrix are created based on the co-assembly of the preformed nanocrystals and graphene. These new graphene nanocomposites distinctively exhibit both the favorable photoluminescence of UCNC and magnetic property of MNC building blocks. Moreover, the graphene nanocomposites exhibit enhanced mechanical properties, good biocompatibility, as well as high electrical conductivity after thermal annealing. Compared with the pure GO film, the maximum tensile strength (102.8 MPa) and modulus (10.9 GPa) of the graphene nanocomposite increase by ca. 119 and 160%, respectively. The luminescent, magnetic, and mechanical properties of the nanocomposites can be fine-tuned by changing the graphene-to-nanocrystal ratios. These results enable to fabricate multi-targeting and multi-treating tools and lighting devices.

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