Selective Enhancement of Carbon Nanotube Photoluminescence by Resonant Energy Transfer

被引：45

作者：

Ahmad, Ashraf ^{[1
]}

Kern, Klaus ^{[1
,2
]}

Balasubramanian, Kannan ^{[1
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[2] Ecole Polytech Fed Lausanne, Inst Phys Nanostruct, CH-1015 Lausanne, Switzerland

来源：

CHEMPHYSCHEM | 2009年 / 10卷 / 06期

关键词：

carbon nanotubes; chirality; fluorescence; energy transfer; photophysics; FLUORESCENCE; SPECTRA; DYE;

D O I：

10.1002/cphc.200800796

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on a simple method for enhancing the efficiency of photoluminescence (PL) emission from selected chiral forms of semiconducting single-wall carbon nanotubes (SWCNTs). The method is based on the use of a fluorescent dye (Nile blue A) that shows the capability of resonant energy transfer on to nanotubes. The excitation of Nile blue A in the presence of SWCNTs results in the quenching of its fluorescence and the energy is resonantly transferred to certain chiral forms. The PL emission from these chiral forms shows a marked increase in efficiency signifying the occurrence of Forster type resonant energy transfer (FRET). Due to its simplicity, this procedure has widespread implications for the detection of carbon nanotubes as well as for their use as fluorophores in FRET-based in vivo and in vitro biological applications.

引用

页码：905 / 909

页数：5

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