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Fluorescence Thermal Antiquenching of Liposome Encapsulated CdSe Quantum Dots

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Abstract:

The green emission semiconductor CdSe quantum dots are successfully encapsulated with lecithoid molecules and transferred into aqueous solution. The liposome-encapsulated CdSe maintain similar emission spectrum properties to free CdSe quantum dots. Fluorescence thermal antiquenching is investigated for the liposome-encapsulated CdSe when the temperature is increased from 20 °C to 80 °C. The reason of the fluorescence enhancement with increasing the temperature is that the vesicle structure of liposome-encapsulated CdSe becomes the CdSe micell structure over the phase transition temperature of the liposome vesicles, and the corresponding structure variation inducing surface reconstruction of CdSe quantum dots.

Keywords: CDSE QUANTUM DOTS; LIPOSOME; MICELLS; PHASE TRANSITION; THERMAL ANTIQUENCHING

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.2886

Publication date: November 1, 2010

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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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