Detection of single carbon nanotubes in aqueous dispersion via photoluminescence

被引：0
|
作者：
Kiowski, O [1 ]
Arnold, K [1 ]
Lebedkin, S [1 ]
Hennrich, F [1 ]
Kappes, M [1 ]
机构：
[1] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany
来源：
Electronic Properties of Novel Nanostructures | 2005年 / 786卷
关键词：
carbon nanotubes; photoluminescence; confocal laser microscopy;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the 'on-line' photoluminescence (PL) detection of individual single-walled carbon nanotubes (SWNTs) in water-surfactant dispersions. This was achieved by using a near-infrared confocal laser luminescence microscope specially optimized for the PL spectroscopy of SWNTs. A detection of single nanotubes was possible by using dispersions with a relatively low concentration of nanotubes and reducing the PL acquisition time so that a switch-on-switch-off behavior of emission peaks was observed, which reflected a random diffusion of different nanotubes through the laser focus volume. These results demonstrate the analytical potential of PL spectroscopy using SWNTs as luminescent markers.
引用
收藏
页码：139 / 142
页数：4
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