RT Journal Article
T1 Generation of nitrile groups on graphites in a nitrogen RF-plasma discharge
A1 Mueller, Andreas
A1 Schwab, Matthias Georg
A1 Encinas García, Noemí
A1 Vollmer, Doris
A1 Sachdev, Hermann
A1 Müllen, Klaus
AB 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.
PB Elsevier
SN 0008-6223
YR 2015
FD 2015
LK https://hdl.handle.net/20.500.14352/99844
UL https://hdl.handle.net/20.500.14352/99844
LA eng
NO 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
NO This 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 thankDr. 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.
NO European Commission
DS Docta Complutense
RD 12 abr 2025