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Facile preparation of cds quantum dots using hyperbranched poly(amidoamine)s with hydrophobic end‐groups as nanoreactors
Author(s) -
Shi Yunfeng,
Liu Lanbo,
Tu Chunlai,
Zhu Lijuan,
Yan Deyue,
Li Guolin,
Guo Fulin,
Zhu Xinyuan
Publication year - 2011
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.34213
Subject(s) - photoluminescence , nanoreactor , poly(amidoamine) , dynamic light scattering , materials science , fourier transform infrared spectroscopy , polymer , amidoamine , quantum dot , spectroscopy , polymer chemistry , chemical engineering , nanoparticle , photochemistry , nanotechnology , chemistry , dendrimer , optoelectronics , composite material , physics , quantum mechanics , engineering
Hyperbranched poly(amidoamine)s with methyl ester terminals (HPAMAM) were synthesized by one‐pot approach and subsequently used as nanoreactors to prepare CdS quantum dots (QDs). HPAMAM could bind Cd 2+ through their internal amines, while the external methyl ester groups prevented the aggregation of polymers. After reaction with S 2− , CdS QDs sequestered within individual hyperbranched polymers were obtained. The resulting CdS/HPAMAM nanocomposites were characterized by dynamic light scattering, transmission electron microscopy, ultraviolet‐visible spectroscopy, photoluminescence spectroscopy, and Fourier transform infrared spectroscopy, confirming the formation of CdS QDs with small particle size and narrow size‐distribution. Furthermore, the effects of Cd 2+ /S 2− ratio and aging time on the photoluminescence of CdS QDs were also investigated. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011