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

Published online by Cambridge University Press:  26 June 2013

Yunfeng Shi*
Affiliation:
School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People’s Republic of China
Junjie Wang*
Affiliation:
School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People’s Republic of China
Sujuan Li
Affiliation:
School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People’s Republic of China
Zongyao Wang
Affiliation:
School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People’s Republic of China
Xiuxiu Zang
Affiliation:
School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People’s Republic of China
Xuemin Zu
Affiliation:
School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People’s Republic of China
Xiaoyin Zhang
Affiliation:
School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People’s Republic of China
Fang Guo
Affiliation:
School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People’s Republic of China
Gangsheng Tong*
Affiliation:
Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
*
a)Address all correspondence to these authors. e-mail: shiyunfeng2009@gmail.com
c)e-mail: tgs@sjtu.edu.cn
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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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Articles
Copyright
Copyright © Materials Research Society 2013 

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References

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