Liquid-chromatographic product purification of highly blue-emitting carbon dots (CDs)

F. Schilfarth 1,2*, V. Michaud 1,2, C. Damm 1,2 and W. Peukert 1,2
1 Institute of Particle Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Cauerstraße 4, 91058 Erlangen, Germany,
2 Interdisciplinary Center for Functional Particle Systems (FPS), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Haberstraße 9a, 91058 Erlangen, Germany

Carbon dots (CDs) are fascinating fluorescent particles < 10 nm, which combine high fluorescence quantum yields (QY) and good biocompatibility and can be synthesized by cheap, green and simple techniques. In literature it was already proposed that CDs consist of a carbon core and highly fluorescent fluorophores which are supposed to be attached to the surface of the CDs.