We introduced oxo-functional graphene as a novel class of materials, which bears in contrast to conventional graphene oxide a hexagonal carbon lattice, a high surface purity and therefore on-plane functional groups in majority, as demonstrated by HRTEM micrographs.[1] Moreover oxo-G bears no relevant amounts of oxidative debris and thus, graphene oxide is considered as a one-component system.[2]. Oxo-G can be used to control the chemistry of surface functional groups and we identified endoperoxides as source of the toxicity of oxo-G, relevant for bio-applications.[3] Controlling the on-plane reactions is the basis for controlled chemistry of graphene oxide and we demonstrate the extention of the life-time of perovskite/PCBM solar cells.[4]
It allows increasing the performance of rationally designed graphene derivatives in applications, such as information storage or solar cells.
REFERENCES
[1] B. Butz, C. Dolle, C. E. Halbig, E. Spiecker and S. Eigler, Angew. Chem. Int. Ed., 2016, 55, 15771-15774.
[2] A. Naumov, F. Grote, M. Overgaard, A. Roth, C. E. Halbig, K. Norgaard, D. M. Guldi and S. Eigler, J. Am. Chem. Soc., 2016, 138, 11445-11448.
[3] H. Pieper, S. Chercheja, S. Eigler, C. E. Halbig, M. R. Filipovic and A. Mokhir, Angew. Chem. Int. Ed., 2016, 55, 405-407.
[4] H. Chen, Y. Hou, C. E. Halbig, S. Chen, H. Zhang, N. Li, F. Guo, X. Tang, N. Gasparini, I. Levchuk, S. Kahmann, C. O. Ramirez Quiroz, A. Osvet, S. Eigler and C. J. Brabec, J. Mater. Chem. A, 2016, 4, 11604-11610.