Skip to main content
eScholarship
Open Access Publications from the University of California

UC Riverside

UC Riverside Electronic Theses and Dissertations bannerUC Riverside

Reversible Synthesis Graphene Oxide Through Controllable Chemical Potential Via Back-Gate Bias: Mechanism and Application

Abstract

Graphene is a single layer of carbon atoms densely packed in a two-dimensional (2D) sp2 -bonded carbon hexagonal lattice and is considered as an essential structure element for a variety of carbon materials. Graphene oxide (GO) is chemically modified graphene containing oxygen functional groups and has conventionally served as a precursor for graphene synthesis. Recently GO has received much more attention by scientists for its unique chemical and electrical properties. For example, when covalently functionalized with oxygen-containing functional groups both on the basal plane and at the edges, GO has an assortment of sp2- and sp3-hybridized carbon atoms. Hence, the availability of numerous types of oxygen-containing functional groups lets GO react with a great range of organic and inorganic materials in covalent, non-covalent or ionic methods so that functional hybrids and composites with remarkable properties can be likely synthesized. Chemically treating a variety of size, shape and relative fractions of sp2-hybridized domains of GO becomes a powerful approach for application-purposed design and preparation of functionalized carbon materials for its optoelectronic characteristics1-3. Furthermore, compared with pristine graphene, GO is fluorescent over a broad range of wavelengths, because of its mixed electronic structures3-5. The objectives of this work is to design of a graphene-based device with reversibly controllable graphene/graphene oxide ratio through chemical and electrical approaches.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View