Vibrational Excitations and Low-Energy Electronic Structure of Epoxide-Decorated Graphene
Year: 2013
Type: article
Abstract: We report infrared studies of adsorbed atomic oxygen (epoxide functional groups) on graphene. Two different systems are used as a platform to explore these interactions, namely, epitaxial graphene/SiC(0001) functionalized with atomic oxygen (graphene epoxide, GE) and chemically reduced graphene oxide (RGO). In the case of the model GE system, IR reflectivity measurements show that epoxide groups distort the graphene π bands around the K-point, imparting a finite effective mass and contributing to a band gap. In the case of RGO, epoxide groups are found to be present following the reduction treatment by a combination of polarized IR reflectance and transmittance measurements. Similar to the GE system, a band gap in the RGO sample is observed as well.
DOI: 10.1021/jz4025386
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: Postdoctoral Rheumatology Training, G2288195916, Collaborative Research: Engineering Miniaturized Gas Sensors with Hybrid Nanostructures, MRI: Development of Synchrotron Based Infrared Microspectroscopy with a Multi-Element Detector, G474454551, G6745835660, Collaborative Research: Exploration of Graphene-Nanocrystal Metamaterials
OpenAlex ID: W2100096757