Dresden 2017 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 15: Poster: Membranes, Biomaterials, Biopolymers

CPP 15.8: Poster

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

Effects of microwaves on graphene quantum dots in solution — •Alexandra Steina, Stefan Fasbender, and Thomas Heinzel — Heinrich-Heine-Universität Düsseldorf, IPkM

Fluorescent graphene quantum dots (GQDs) are prepared by the method of Wu et. al [1] via hydrothermal treatment of citric acid and dicyandiamide with subsequent dialysis to obtain a pure GQD solution. The obtained aqueous solution is treated with microwaves for various times and the effect on the chemical composition of the GQDs is studied with XPS. Fluorescence spectroscopy and UV-vis spectroscopy are used to determine the optical properties of the GQDs.

[1] Wu et al., Nanoscale, 2014, 6, 3868