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Journal of Nanoparticle Research

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01.05.2013 | Research Paper

Study on the optical properties of CdSe QDs with different ligands in specific matrix

verfasst von: Wei Lin, Wei Zou, Zhongjie Du, Hangquan Li, Chen Zhang

Erschienen in: Journal of Nanoparticle Research | Ausgabe 5/2013

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Abstract

Different ligand structures of CdSe quantum dots were designed and synthesized for the specific matrix and the effect of the ligands on the photoluminescence and optical properties were further investigated. Ligand exchange reaction was used to synthesize thioglycolic acid-capped CdSe QDs and the process was characterized by FT-IR and titration. The influence of environmental pH value and storing time on the properties of thioglycolic acid-capped CdSe QDs in aqueous solution were studied by absorption and photoluminescence spectra. It was found that alkaline environment was more beneficial for the application of CdSe QDs. Therefore, the amino ligands with different molecular weight were grafted onto CdSe QDs for improving the compatibility with epoxy matrix and then amino-capped CdSe QDs/epoxy nanocomposites were fabricated. The morphologies and properties of the nanocomposites were characterized by DLS, HR-TEM, UV–Vis spectra, and photoluminescence spectra. As a result, amino ligands with short-molecular chain-capped CdSe QDs/epoxy nanocomposites exhibited good dispersion, high transparency and photoluminescence, and would be suitable for potential application in light-emitting diode device.

Vorheriger Artikel Multifunctional nanocomposites with different coupling agents: synthesis, luminescent and magnetic properties

Nächster Artikel Effect of silver nanoparticles on concentration of silver heavy element and growth indexes in cucumber (Cucumis sativus L. negeen)

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Titel: Study on the optical properties of CdSe QDs with different ligands in specific matrix
verfasst von: Wei Lin
Wei Zou
Zhongjie Du
Hangquan Li
Chen Zhang
Publikationsdatum: 01.05.2013
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 5/2013
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-013-1629-y

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