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Photoluminescence-enhanced CdTe quantum dots by hyperbranched poly(amidoamine)s functionalization

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Abstract

A new strategy using hyperbranched poly(amidoamine)s to functionalize CdTe quantum dots (QDs) has been described. Hyperbranched poly(amidoamine)s with amine terminals (HP-EDAMA1) were synthesized by one-pot polymerization via the coupled-monomer method and subsequently used to functionalize preformed CdTe QDs. Quite different from previous studies in which the photoluminescence of QDs was quenched by further functionalization with tailored ligands, the quantum yield of CdTe/HP-EDAMA1 nanocomposites was 2 times that of pure CdTe QDs without modification. With this versatile method, the photoluminescence quenching of QDs in the modification process by matrix materials can be effectively solved and new QDs/hyperbranched polymer nanocomposites with potential applications in biomedicine might be offered.

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Acknowledgment

This work is supported by the Joint Fund for Fostering Talents of National Natural Science Foundation of China and Henan Province (Grant No. U1204213), the project of science and technology development of Henan Province (Grant No. 122102310522), the project of science and technology development of Anyang City (Grant No. 2011-41), and the social development projects of Anyang City (Grant No. 2012-218).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455000, People’s Republic of China

    Yunfeng Shi, Junjie Wang, Sujuan Li, Zongyao Wang, Xiuxiu Zang, Xuemin Zu, Xiaoyin Zhang & Fang Guo

  2. Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China

    Gangsheng Tong

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  1. Yunfeng Shi
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Correspondence to Yunfeng Shi.

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Supplementary materials can be viewed in this issue of the Journal of Materials Research by visiting http://journals.cambridge.org/jmr.

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Shi, Y., Wang, J., Li, S. et al. Photoluminescence-enhanced CdTe quantum dots by hyperbranched poly(amidoamine)s functionalization. Journal of Materials Research 28, 1940–1946 (2013). https://doi.org/10.1557/jmr.2013.166

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  • DOI: https://doi.org/10.1557/jmr.2013.166

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