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Published in: Journal of Nanoparticle Research 2/2017

01-02-2017 | Research Paper

Tuning optical properties of water-soluble CdTe quantum dots for biological applications

Authors: Anne S. Schulze, Isabella Tavernaro, Friederike Machka, Olga Dakischew, Katrin S. Lips, Mathias S. Wickleder

Published in: Journal of Nanoparticle Research | Issue 2/2017

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Abstract

In this study, two different synthetic methods in aqueous solution are presented to tune the optical properties of CdTe and CdSe semiconductor nanoparticles. Additionally, the influence of different temperatures, pressures, precursor ratios, surface ligands, bases, and core components in the synthesis was investigated with regard to the particle sizes and optical properties. As a result, a red shift of the emission and absorption maxima with increasing reaction temperature (100 to 220°C), pressure (1 to 25 bar), and different ratios of core components of alloyed semiconductor nanoparticles could be observed without a change of the particle size. An increase in particle size from 2.5 to 5 nm was only achieved by variation of the mercaptocarboxylic acid ligands in combination with the reaction time and used base. To get a first hint on the cytotoxic effects and cell uptake of the synthesized quantum dots, in vitro tests mesenchymal stem cells (MSCs) were carried out.

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Metadata
Title
Tuning optical properties of water-soluble CdTe quantum dots for biological applications
Authors
Anne S. Schulze
Isabella Tavernaro
Friederike Machka
Olga Dakischew
Katrin S. Lips
Mathias S. Wickleder
Publication date
01-02-2017
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 2/2017
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-017-3757-2

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