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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 15: Poster: Membranes, Biomaterials, Biopolymers

CPP 15.10: Poster

Montag, 20. März 2017, 18:30–21:00, P1C

Analysis of orange graphene quantum dots for biological applications — •Lisa Zimmermann¹, Stefan Fasbender¹, Ron-Patrick Cadeddu², Rainer Haas², and Thomas Heinzel¹ — ¹Heinrich Heine Universität Düsseldorf, IPkM — ²Universitätsklinikum Düsseldorf, Klinik für Hämatologie

Orange fluorescent graphene quantum dots (GQDs) with an excitation optimum around 500 nm are prepared by thermal decomposition of citric acid and diethylenetriamine slightly modifying the method of Qu et al. [1]. In order to analyse the properties of the particles X-ray photoelectron spectroscopy spectra as well as fluorescence and UV-vis spectra are taken. The latter ones provide the photoluminescence quantum yield of the GQDs. The uptake of GQDs into primary human blood cells is investigated using flow cytometry and visualised via confocal microscopy.

[1] Qu et al., Light: Science & Applications, 2015, 4, e364