Fluorescence Thermal Antiquenching of Liposome Encapsulated CdSe Quantum Dots
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.
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Document Type: Research Article
Publication date: 2010-11-01
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