2026-06-08T02:42:46Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/998442024-08-20T00:05:52Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Mueller, Andreas author Schwab, Matthias Georg author Encinas García, Noemí author Vollmer, Doris author Sachdev, Hermann author Müllen, Klaus 2024-02-07T10:02:21Z 2024-02-07T10:02:21Z 2015 Mueller 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;84:426-433 0008-6223 10.1016/j.carbon.2014.11.054 https://hdl.handle.net/20.500.14352/99844 https://doi.org/10.1016/j.carbon.2014.11.054 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. eng Attribution-NonCommercial-NoDerivatives 4.0 International Generation of nitrile groups on graphites in a nitrogen RF-plasma discharge journal article 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URL https://docta.ucm.es/bitstreams/ff544376-15b7-46a6-b399-f195102596f3/download File MD5 1e94c7b4a66b0bcbc698f2cdfe988c18 1948102 application/pdf Generation_of_nitrile_groups.pdf