Graded-bandgap quantum-dot-modified nanotubes: A sensitive biosensor for enhanced detection of DNA hybridization

被引:90
作者
Feng, Chuan-Liang
Zhong, Xinhua
Steinhart, Martin
Caminade, Anne-Marie
Majoral, Jean-Pierre
Knoll, Wolfgang
机构
[1] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
[2] E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China
[3] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany
[4] CNRS, Chim Coordinat Lab, F-31077 Toulouse 4, France
关键词
D O I
10.1002/adma.200602311
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Highly sensitive detection of DNA hybridization is demonstrated for the functionalized nanotubes (NTs) described here. With a cascaded-energy-transfer architecture produced by depositing, layer-by-layer, three types of ZnxCd1-xSe alloy quantum dots (QDs)-that is, graded-bandgap QDs-into ordered porous alumina membranes (see figure), the NTs provide the ability to detect small but significant changes in the signal during biological detection.
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页码:1933 / +
页数:5
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