Susanne Helene Jensen, Gunnar Olsen and Qijin Chi*
The NanoChemistry Group, Department of Chemistry, Technical University of Denmark, Kongens Lyngby 2800, Denmark. *E-mail: cq@kemi.dtu.dk

As a wonder material, graphene has offered a new platform for various applications in materials science and engineering. Chemical modification of graphene is a key step to introduce new and desirable functionality which combines with the intrinsic merits of graphene in optical and electronic properties. While pristine graphene is largely chemically inert, chemically exfoliated graphene oxide (GO), as a building-up starting material, possess the advantages including low-cost production and facile post-functionalization with wet-chemical methods. Both covalent and non-covalent methods are applicable to modifications of GO nanosheets [1]. To date, many studies have shown that GO and its reduced form, reduced graphene oxide (rGO), can be chemically modified through different types of chemical bonding but less to none using phosphorous bonding that could offer unique advantages such as tunable mechanical property [2]. In this work, we have systematically performed the studies on the synthesis and structural charaterization of phosphate attached GO (P-GO) or/and rGO nanosheets (P-rGO) [3], with the aim to generate mechanically strong as well as super-hydrophilic nanocomposites. Some key results will form a poster presented in this conference.

1. J. B. Goods, S. A. Sydlik, J. J. Walish and T. M. Swager, Adv. Mater. 2014, 26, 718-723.
2. V. Georgakilas et al., Chem. Rev. 2012, 112, 6156−6214.
3. S. H. Jensen, Master Thesis, Technical University of Denmark, 2015

Susanne H. Jensen is currently a master student under supervision of associate professor Qijin Chi, affiliated with the Nanochemistry group at the Department of Chemistry, Technical University of Denmark, and will fulfill her master degree in August 2015. She has studied applied chemistry and chemical engineering through the past 6 years. Susanne is interested in the research that can produce new materials for potential applications in chemical and mechanical engineering, with particularly keen to polymer-graphene nanocomposites. The poster presented in Carbonhagen 6 is the key part of the results obtained in her master thesis project.