Surface modification and functionalization of semiconductor quantum dots through reactive coating of silanes in toluene
- 1 January 2007
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 17 (8) , 800-805
- https://doi.org/10.1039/b614432b
Abstract
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.Keywords
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