Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 17, Issue 8, Pages 800-805Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b614432b
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We have reported a general method for biocompatible modification and multi-functionalization of semiconductor quantum dots (QDs) through direct reaction of organic silanes on the surface of semiconductor QDs. Functionalized QDs, including CdSe/ZnS, CdSe/CdS core/shell and PbS QDs, have been prepared at high concentration up to 10(-4) M in homogeneous media, i.e. toluene. Fluorescence spectra and TEM images indicate that the modified QDs exhibit strong fluorescence and single particle features, respectively. Fluorescence images show that biocompatible CdSe/ZnS QDs are internalized into SK-BR-3 breast cancer cells after hydrophilic modification. Additionally, methacrylate-modified QDs have been used as monomers for radical polymerization.
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