A new two-phase route to cadmium sulfide quantum dots using amphiphilic hyperbranched polymers as unimolecular nanoreactors
✍ Scribed by Yunfeng Shi; Jiamiao Liang; Lanbo Liu; Lin He; Chunlai Tu; Xinqiu Guo; Bangshang Zhu; Chengyu Jin; Deyue Yan; Tao Han; Xinyuan Zhu
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 689 KB
- Volume
- 120
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
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 Cd^2+^ ions. After the reaction with S^2−^ 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