Designer multi-functional comb-polymers for surface engineering of quantum dots on the nanoscale |
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Authors: | Dominik Jańczewski Yin Win Khin G. Julius Vancso |
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Affiliation: | a Institute of Materials Research and Engineering, A∗STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore b Division of Bioengineering, Faculty of Engineering, National University of Singapore, Singapore 117576, Singapore |
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Abstract: | Synthesis, characterization and cell-biomarker applications for a novel series of comb-copolymers featuring hydrophobic amide side groups, carboxylates and other functionalities such as polymerizable side chains and PEG oligomers are reported. When used as polymer ligand shell for trioctylphosphine oxide (TOPO) coated quantum dots (QDs) these copolymers effectively solubilise CdSe/ZnS QDs in water. A systematic study was carried out to find the relation between the molecular structure of the copolymers, their ability to coat the QDs, and to suspend the nanocrystals in water. To demonstrate potential applications, highly luminescent QD/polymer assemblies were internalized into living and fixed cells. |
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Keywords: | Quantum dot (QD) Amphiphilic polymer Polymeric micelle Surface engineering Phase transfer |
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