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Characterization of the Organic Ligand Shell of Semiconductor Quantum Dots by Fluorescence Quenching Experiments

Characterization of the Organic Ligand Shell of Semiconductor Quantum Dots by Fluorescence Quenching Experiments

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BOLDT, Klaus, Sebastian JANDER, Kathrin HOPPE, Horst WELLER, 2011. Characterization of the Organic Ligand Shell of Semiconductor Quantum Dots by Fluorescence Quenching Experiments. In: ACS Nano. 5(10), pp. 8115-8123. ISSN 1936-0851. eISSN 1936-086X. Available under: doi: 10.1021/nn202748v

@article{Boldt2011-10-25Chara-44268, title={Characterization of the Organic Ligand Shell of Semiconductor Quantum Dots by Fluorescence Quenching Experiments}, year={2011}, doi={10.1021/nn202748v}, number={10}, volume={5}, issn={1936-0851}, journal={ACS Nano}, pages={8115--8123}, author={Boldt, Klaus and Jander, Sebastian and Hoppe, Kathrin and Weller, Horst} }

Jander, Sebastian Boldt, Klaus Hoppe, Kathrin Weller, Horst We present the characterization of the organic ligand shell of CdSe/Cd<sub>x</sub>Zn<sub>1-x</sub>)S/ZnS nanoparticles by means of fluorescence quenching experiments. Both electron scavengers and acceptors for resonance energy transfer were employed as probes. Different quenching behavior for short and long chain thiol ligands in water was found. It could be shown that poly(ethylene oxide) (PEO)-capping of the particles comprises a densely packed inner shell and a loosely packed outer shell in which ions and small molecules diffuse unhindered. A quantitative uptake of quencher molecules into the PEO shell was observed, through which the particle volume including the ligand sphere could be determined. Hoppe, Kathrin Weller, Horst Characterization of the Organic Ligand Shell of Semiconductor Quantum Dots by Fluorescence Quenching Experiments 2018-12-11T12:53:32Z 2011-10-25 Boldt, Klaus 2018-12-11T12:53:32Z Jander, Sebastian eng

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