文献类型：期刊文献

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

作者：Feng, Chuan-Liang[1]; Zhong, Xinhua[2]; Steinhart, Martin[3]; Caminade, Anne-Marie[4]; Majoral, Jean-Pierre[4]; Knoll, Wolfgang[1]

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

年份：2007

卷号：19

期号：15

起止页码：1933

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20073310763629);WOS:【SCI-EXPANDED(收录号:WOS:000248706900005)】；

语种：英文

外文关键词：Biosensors - Dendrimers - DNA - Energy gap - Nanotubes - Phosphorus

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.