Mueller, AndreasSchwab, Matthias GeorgEncinas García, NoemíVollmer, DorisSachdev, HermannMüllen, Klaus2024-02-072024-02-072015Mueller A, Schwab MG, Encinas N, Vollmer D, Sadchev H, Müllen K. Generation of nitrile groups on graphites in a nitrogen RF-plasma discharge. Carbon. 2015 Apr;84:426-4330008-622310.1016/j.carbon.2014.11.054https://hdl.handle.net/20.500.14352/99844This works are supported by the funding from the European Research Council for the FP7 Advanced Grant AdG-2010267160 ‘‘NANOGRAPH’’ – The Chemist’s Way of Making and Utilizing Perfect Graphenes. The authors would like to thank Dr. I. Lieberwirth and G. Glasser for SEM measurements and Dr. S. Hirth and P. Muehlbeier-Entzminger for XPS measurements and B. Rietz for assistance in CMIC.Graphite particles were treated in a nitrogen radio frequency-plasma (RF-plasma) at different excitation power. The morphological as well as chemical surface modifications were investigated by Raman spectroscopy, SEM, and XPS. Changes of the sp2/sp3 bonding ratio and selective surface terminations by functional groups were achieved. Especially, a direct functionalization of the graphites with nitrile groups was evidenced by a characteristic signal at 2240 cm−1 in the Raman spectra after a high energy RF-nitrogen plasma treatment. A total nitrogen content of up to 11 at.% was reached by the applied conditions. The increased polarity of the surfaces was confirmed by contact angle measurements. The nitrile functionalization may serve as synthetic scaffold for the development of new routes towards the chemical surface modification of carbon substrates. Furthermore, the modified graphites can be processed by common exfoliation techniques yielding nitrogen modified graphene nanoplatelets directly in polar and non-polar solvents.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal articlehttps://doi.org/10.1016/j.carbon.2014.11.054open access62066.0Enlaces químicosModificación químicaDescargas eléctricasGrupos funcionalesGrafitonitrógenoAplicaciones de plasmaTratamiento de superficiesInteracciones de plasma de ondasIngeniería químicaMateriales3303 Ingeniería y Tecnología Químicas3312 Tecnología de Materiales