Spectral properties of ultrasmall CdS nanoparticles stabilized by mercaptoacids and hydrazine

Solonenko Dmytro I.; Rayevska Oleksandra; Stroyuk Oleksandr; Kuchmiy Stepan

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SOLONENKO, Dmytro I., RAYEVSKA, Oleksandra, STROYUK, Oleksandr, KUCHMIY, Stepan. Spectral properties of ultrasmall CdS nanoparticles stabilized by mercaptoacids and hydrazine. In: Nanotechnologies and Biomedical Engineering, Ed. 2, 18-20 aprilie 2013, Chișinău. Technical University of Moldova, 2013, Editia 2, pp. 270-273. ISBN 978-9975-62-343-8..

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Nanotechnologies and Biomedical Engineering
Editia 2, 2013

Conferința "International Conference on Nanotechnologies and Biomedical Engineering"
2, Chișinău, Moldova, 18-20 aprilie 2013

Spectral properties of ultrasmall CdS nanoparticles stabilized by mercaptoacids and hydrazine

Pag. 270-273

Solonenko Dmytro I.¹², Rayevska Oleksandra², Stroyuk Oleksandr², Kuchmiy Stepan²

¹ National University of “Kyiv-Mohyla Academy”,
² L.V. Pysarzhevskiy Institute of Physical Chemistry of National Academy of Sciences of Ukraine

Disponibil în IBN: 19 iunie 2019

Rezumat

Ultrasmall colloidal CdS quantum dots (QDs) were synthesized in water at room temperature by using a combination of two low-molecular-weight stabilizers – hydrazine and a mercaptoacid, particularly, mercaptoacetic and mercaptopropionic-2 acids. The average size of QDs was found to depend on the Cd-to-S ratio at the synthesis and be as small as 2,5 nm at 80% cadmium(II) excess. The CdS QDs emit broadband photoluminescence in the visible spectrum range with a relative quantum yield of around 5% and the radiative life time of around 100 ns.

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