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Facile preparation of cds quantum dots using hyperbranched poly(amidoamine)s with hydrophobic end-groups as nanoreactors

Authors

  • Yunfeng Shi,

    Corresponding author
    1. School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People's Republic of China
    2. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
    • School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People's Republic of China
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  • Lanbo Liu,

    1. Clinical Medical College, Shanghai Jiao Tong University, Shanghai 200025, People's Republic of China
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  • Chunlai Tu,

    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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  • Lijuan Zhu,

    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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  • Deyue Yan,

    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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  • Guolin Li,

    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
    2. Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Nangang District, Harbin 150001, People's Republic of China
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  • Fulin Guo,

    Corresponding author
    1. Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Nangang District, Harbin 150001, People's Republic of China
    • Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Harbin Medical University, Nangang District, Harbin 150001, People's Republic of China
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  • Xinyuan Zhu

    Corresponding author
    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
    • School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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Abstract

Hyperbranched poly(amidoamine)s with methyl ester terminals (HPAMAM) were synthesized by one-pot approach and subsequently used as nanoreactors to prepare CdS quantum dots (QDs). HPAMAM could bind Cd2+ through their internal amines, while the external methyl ester groups prevented the aggregation of polymers. After reaction with S2−, CdS QDs sequestered within individual hyperbranched polymers were obtained. The resulting CdS/HPAMAM nanocomposites were characterized by dynamic light scattering, transmission electron microscopy, ultraviolet-visible spectroscopy, photoluminescence spectroscopy, and Fourier transform infrared spectroscopy, confirming the formation of CdS QDs with small particle size and narrow size-distribution. Furthermore, the effects of Cd2+/S2− ratio and aging time on the photoluminescence of CdS QDs were also investigated. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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