Journal of Materials Research


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

Yunfeng Shia1 c1, Junjie Wanga1 c2, Sujuan Lia1, Zongyao Wanga1, Xiuxiu Zanga1, Xuemin Zua1, Xiaoyin Zhanga1, Fang Guoa1 and Gangsheng Tonga2 c3

a1 School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People’s Republic of China

a2 Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China


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.

(Received March 17 2013)

(Accepted May 28 2013)


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