Optical analysis of beads encoded with quantum dots coated with a cationic polymer

被引:45
作者
Allen, Claudine Ni [1 ]
Lequeux, Nicolas [2 ]
Chassenieux, Christophe [3 ]
Tessier, Gilles [1 ]
Dubertret, Benoit [1 ]
机构
[1] Ecole Super Phys & Chim Ind Ville Paris, CNRS, UPR A0005, Lab Photons & Mat, F-75005 Paris, France
[2] Ecole Super Phys & Chim Ind Ville Paris, UMR 7615, Lab Physicochim Polymeres & Milieux Disperses, F-75005 Paris, France
[3] Univ Maine, Lab Polymeres Colloides Interfaces, F-72085 Le Mans, France
关键词
D O I
10.1002/adma.200700116
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Quantum dots are incorporated onto small beads made or various materials thanks to the versatile layer-by-layer method. The high contrast, tri-color gradient TEM image of a bead emphasizes quantum dots in red-yellow spots. Below, quantum dot coated magnetic beads demonstrate bimodality with their bright fluorescence and alignment along field lines. An hyperspectral imaging inspired technique allowed faster statistical characterization of optically coded beads on a setup typical of biological experiments. [GRAPHICS]
引用
收藏
页码:4420 / +
页数:7
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