Preparation and characterization of monodisperse CdS quantum dot‐polymer microspheres |
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| Authors: | Qian Shao Chengli Yang Lingzhi Jiang Jie He Shijie Li Biwang Jiang |
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| Institution: | 1. Nano‐Micro Materials Research Center, Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China;2. Shenzhen Key Laboratory of Special Functional Materials, Shenzhen University, Shenzhen 518060, China;3. School of Life Science, Shenzhen University, Shenzhen 518060, China |
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| Abstract: | A novel and effective method for the preparation of monodisperse CdS quantum dot‐polymer microspheres was proposed. The monodisperse hollow polymer microspheres were firstly swelled in chloroform. Then, the reaction precursor composed of CdO and sulfur, was impregnated into the hollow polymer microspheres. Subsequently, the CdS quantum dots were synthesized directly within the polymer microspheres by thermal decomposition. The morphology, structure, and fluorescence properties of CdS quantum dot‐polymer microspheres were studied by scanning electron microscope, transmission electron microscope, fluorescence microscope, and flow cytometry. The results indicate that the fluorescent CdS quantum dots are successfully synthesized in the monodisperse hollow polymer microspeheres, which provide very strong fluorescence intensity, and offer excellent photostability due to the compact structure of the polymer matrix. These CdS quantum dot‐polymer microspheres have potential applications in biotechnology and biomedicine. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 751–755, 2010 |
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| Keywords: | CdS quantum dots composites fluorescence monodisperse polymer microspheres polystyrene |
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