کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1168294 1491155 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Carbon nanotube–quantum dot nanocomposites as new fluorescence nanoparticles for the determination of trace levels of PAHs in water
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Carbon nanotube–quantum dot nanocomposites as new fluorescence nanoparticles for the determination of trace levels of PAHs in water
چکیده انگلیسی

Amplification of fluorescence is a nanoscale phenomenon which is particularly pronounced in close proximity to metal nanostructures. We have demonstrated for first time that fluorescence amplification can also be produced by single-walled carbon nanotube–quantum dot nanocomposites (SWCNT–QDs). Concretely we exploit the adsorption capabilities of SWCNTs to facilitate the interaction of analytes with the nanoparticle. The fluorescence amplification mechanism is discussed in the paper. The analytical potential of these nanocomposites has been demonstrated for the detection of trace levels of polycyclic aromatic compounds (PAHs) in river water samples. Compared with QDs nanoparticles, the fluorescence enhancement achieved with the SWCNT–QDs nanocomposites was 3.6–5.5 times higher.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 652, Issues 1–2, 12 October 2009, Pages 278–284
نویسندگان
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