Self-assembled graphene oxide architectures: towards developing high-performance multifunctional hybrids

Dr. Seyed Hamed Aboutalebi (IPM, Iran, and University of Wollongong, Australia)
Monday, 94/08/04 (October 26, 2015) 15:30

The prospect of developing self-assembled multifunctional flexible three-dimensional (3D) architectures based on integrative chemistry for lightweight, foldable, yet robust, electronic components that can turn the many promises of graphene-based devices into reality is an ambitious frontier research which is yet to be realized. In this regard, Graphene oxide (GO) and its derivatives enjoy a unique tunable amphiphilic structure which give them an edge in a wide range of composite making strategies. It has been successfully demonstrated that GO and/or other structures obtained from GO can have immense positive impact on the final properties of the matrix showing simultaneous improvement in mechanical, thermal, electrical, electrochemical and optical aspects, especially when high lateral size of GO is preserved. However, there are yet many fundamental questions that should be answered before harnessing the full potential of this exciting material for real-life applications. In this talk, we first look into the story behind the recent fame of GO despite the fact that the research on GO goes back to the 19th century. Then we answer the question why GO deserves so much attention as one of the most important constituents of composite materials. We also demonstrate that GO dispersions as a model two dimensional soft material, exhibit a unique rich diverse rheological behaviour that constitutes them as a new class of soft-materials. We also explain and show compelling experimental evidence on why these unique characteristics represent a viable and substantive advance in tailor-making and processing GO dispersions in almost all industrially scalable processing methods including but not limited to a whole range of printing, spinning, and spraying techniques. It is anticipated that such approaches will lead to the development of highly promising candidates for a range of applications such as wearable, light weight multifunctional textiles and electronic gadgets and flexible energy storage devices to meet the demands of real-world energy storage systems.