Optical properties of CdSe and CdSe/ZnS quantum dots dispersed in solvents of different polarity |
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Authors: | N D Abazovi? J ? Kuljanin-Jakovljevi? M I ?omor |
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Institution: | (1) Vinča Institute of Nuclear Sciences, P.O. Box 522, 11001 Belgrade, Serbia |
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Abstract: | Original organic capping TOPO/TOP groups of CdSe and CdSe/ZnS quantum dots (QDs), from mother solution were replaced with
2_mercaptoethanol, which was chosen as model compound, in order to achieve water solubility. Obtained water dispersions of
CdSe and CdSe/ZnS QDs were characterized by UV/VIS absorption and luminescence techniques. Luminescence measurements revealed
that bare cores are very sensitive to surface capping, transfer into water diminished emission intensity. Core/shell, CdSe/ZnS,
QDs are much more resistant to changes of the capping and solvent, and significant part of emission intensity was preserved
in water.
The article is published in the original. |
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