Publikation: Synthesis and Characterization of CdS Nanoparticles Stabilized by Double-Hydrophilic Block Copolymers
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A novel and simple preparation method for single monodisperse CdS nanoparticles with controllable size and stability against oxidation is presented. Double-hydrophilic block copolymers consisting of a solvating poly(ethylene glycol) PEG block and a poly(ethylene imine) PEI binding block have been used as effective stabilizers for the solution synthesis of high-quality CdS nanoparticles in water and methanol. Absorption, fluorescence spectroscopy, and transmission electron microscopy were employed for characterization, which revealed that the prepared CdS nanoparticles had a well-resolved cubic structure and were monodisperse in size. It was also found that the CdS nanoparticles were dispersed in solution as single entities and showed a very good resistance against oxidation for months, according to their polymer shell. The particle size was controllable in the range between 2 and 4 nm by adjusting the polymer concentration and choice of the solvent.
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QI, Limin, Helmut CÖLFEN, Markus ANTONIETTI, 2001. Synthesis and Characterization of CdS Nanoparticles Stabilized by Double-Hydrophilic Block Copolymers. In: Nano Letters. 2001, 1(2), pp. 61-65. ISSN 1530-6984. eISSN 1530-6992. Available under: doi: 10.1021/nl0055052BibTex
@article{Qi2001-02Synth-40476, year={2001}, doi={10.1021/nl0055052}, title={Synthesis and Characterization of CdS Nanoparticles Stabilized by Double-Hydrophilic Block Copolymers}, number={2}, volume={1}, issn={1530-6984}, journal={Nano Letters}, pages={61--65}, author={Qi, Limin and Cölfen, Helmut and Antonietti, Markus} }
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