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Continuous Size Tuning of Monodisperse ZnO Colloidal Nanocrystal Clusters by a Microwave-Polyol Process and Their Application for Humidity Sensing

Authors

  • Xianluo Hu,

    Corresponding author
    1. Key Laboratory of Pesticide & Chemical Biology of Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 (P. R. China)
    2. Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories, Hong Kong (P. R. China)
    • Key Laboratory of Pesticide & Chemical Biology of Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 (P. R. China).
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  • Jingming Gong,

    1. Key Laboratory of Pesticide & Chemical Biology of Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 (P. R. China)
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  • Lizhi Zhang,

    1. Key Laboratory of Pesticide & Chemical Biology of Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 (P. R. China)
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  • Jimmy C. Yu

    Corresponding author
    1. Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories, Hong Kong (P. R. China)
    • Department of Chemistry The Chinese University of Hong Kong Shatin, New Territories, Hong Kong (P. R. China).
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  • The authors acknowledge the support from a Strategic Investments Scheme administrated by The Chinese University of Hong Kong and the National Science Foundation of China (grant nos. 20777026 and 20503009). Supporting Information is available online from Wiley InterScience or from the authors.

Abstract

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Monodisperse ZnO colloidal nanocrystal clusters (CNCs) are synthesized through a rapid microwave-polyol process. The size of the clusters is tunable from 57 to 274 nm by varying the amount of Zn-complex precursors. The combination of unique secondary nanostructures, inter-nanocrystallites, and large internal surfaces make these ZnO CNCs ideal candidates for applications such as humidity sensing.

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