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A new two‐phase route to cadmium sulfide quantum dots using amphiphilic hyperbranched polymers as unimolecular nanoreactors
Author(s) -
Shi Yunfeng,
Liang Jiamiao,
Liu Lanbo,
He Lin,
Tu Chunlai,
Guo Xinqiu,
Zhu Bangshang,
Jin Chengyu,
Yan Deyue,
Han Tao,
Zhu Xinyuan
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.33120
Subject(s) - dispersity , nanoreactor , micelle , amphiphile , aqueous solution , cadmium sulfide , sulfide , polymer chemistry , aqueous two phase system , chloroform , materials science , polymer , chemistry , chemical engineering , inorganic chemistry , nanoparticle , organic chemistry , nanotechnology , copolymer , engineering
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
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