Graphene Oxide: A One- versus Two-Component Material

Naumov A, Grote F, Overgaard M, Roth AM, Halbig CE, Norgaard K, Guldi DM, Eigler S (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Journal of the American Chemical Society American Chemical Society

Book Volume: 138

Pages Range: 11445-11448

Journal Issue: 36

DOI: 10.1021/jacs.6b05928

Abstract

The structure of graphene oxide (GO) is a matter of discussion. While established GO models are based on functional groups attached to the carbon framework, another frequently used model claims that GO consists of two components, a slightly oxidized graphene core and highly oxidized molecular species, oxidative debris (OD), adsorbed on it. Those adsorbents are claimed to be the origin for optical properties of GO. Here, we examine this model by preparing GO with a low degree of functionalization, combining it with OD and studying the optical properties of both components and their combination in an artificial two-component system. The analyses of absorption and emission spectra as well as lifetime measurements reveal that properties of the combined system are distinctly different from those of GO. That confirms structural models of GO as a separate oxygenated hexagonal carbon framework with optical properties governed by its internal structure rather than the presence of OD. Understanding the structure of GO allows further reliable interpretation of its optical and electronic properties and enables controlled processing of GO.

Authors with CRIS profile

Alexandra Marina Roth Sonderforschungsbereich 953/3 Synthetische Kohlenstoffallotrope Christian Eberhard Halbig Lehrstuhl für Organische Chemie II Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Involved external institutions

University of Copenhagen DK Denmark (DK) Chalmers University of Technology / Chalmers tekniska högskola SE Sweden (SE) Texas Christian University (TCU) US United States (USA) (US)

How to cite

APA:

Naumov, A., Grote, F., Overgaard, M., Roth, A.M., Halbig, C.E., Norgaard, K.,... Eigler, S. (2016). Graphene Oxide: A One- versus Two-Component Material. Journal of the American Chemical Society, 138(36), 11445-11448. https://doi.org/10.1021/jacs.6b05928

MLA:

Naumov, Anton, et al. "Graphene Oxide: A One- versus Two-Component Material." Journal of the American Chemical Society 138.36 (2016): 11445-11448.

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