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Labeling Patterned DNA Molecules Using CdS Fluorescence Nanoparticles

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We present the detection of patterned DNA molecules fixed on quartz substrates using CdS florescence quantum dots, and the linear assembly of CdS nanoparticles based on DNA templates. The detection and the assembling processes were recognized by the bright spots arraying in grid patterns resulting from the fluorescence of CdS nanoparticles bymeans of dark optical microscopy, which attribute to the complementation process of DNA molecules and the electrostatic interaction between the DNA with positive charges and CdS nanocrystals with negative charges. In addition, the photoluminescence (PL) emission characteristics of temperature dependence and decay of DNA-CdS samples are analyzed.
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Keywords: CDS QUANTUM DOTS; DNA MOLECULES; SELF-ASSEMBLE

Document Type: Research Article

Publication date: 2009-02-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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