A new two‐phase route to cadmium sulfide quantum dots using amphiphilic hyperbranched polymers as unimolecular nanoreactors |
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| Authors: | Yunfeng Shi Jiamiao Liang Lanbo Liu Lin He Chunlai Tu Xinqiu Guo Bangshang Zhu Chengyu Jin Deyue Yan Tao Han Xinyuan Zhu |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, People's Republic of China;2. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, State Key Laboratory of Metal Matrix Composites, 800 Dongchuan Road, Shanghai 200240, People's Republic of China;3. Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China;4. Clinical Medical College, Shanghai Jiao Tong University, 227 South Chongqing Road, Shanghai 200025, People's Republic of China;5. Department of Instrument Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China |
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| Abstract: | A new two‐phase route was developed to prepare monodisperse cadmium sulfide (CdS) quantum dots (QDs) with a narrow size distribution. In a two‐phase system, chloroform and water were used as separate solvents for palmitoyl chloride functionalized hyperbranched polyamidoamine (HPAMAM‐PC) and cadmium acetate/sodium sulfide, respectively. The amphiphilic HPAMAM‐PC, with a hydrophilic dendritic core and hydrophobic arms, formed stable unimolecular micelles in chloroform and was used to encapsulate aqueous Cd2+ ions. After the reaction with S2− ions from the aqueous phase, monodisperse and uniform‐sized CdS QDs stabilized by HPAMAM‐PC unimolecular micelles were obtained. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120:991–997, 2011 |
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| Keywords: | branched micelles nanocomposites |
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