Abstract
Graphene has generated great sensation owing to its fascinating properties with possible potential applications. This two-dimensional material exhibits half-integer quantum Hall effect and an ambipolar electric field effect, along with ballistic conduction of charge carriers. In this article, we provide a overview on some aspects of graphene devoting the special attention to synthesis, functionalization, self-assembly, surface properties, gas adsorption and fluorescence quenching ability of graphene. Graphenes with varying number of layers can be synthesized by using different strategies. Graphene can be functionalized by different means in order to disperse it in various solvents. We also present the self-assembly of graphene at the liquid-liquid interface besides its surface properties including adsorption of hydrogen, carbon dioxide and methane. The remarkable property of graphene of quenching fluorescence of aromatic molecules is shown to be associated with photo-induced electron transfer.
Highlights
Graphene, a single sheet of sp2 hybridized carbon atoms densely packed in a honeycomb lattice, has received a great attention due to its fascinating properties.[1,2,3] A remarkable feature of graphene is that the energy of electrons is linearly dependent on the wave vector near the crossing points in the Brillouin zone
Different procedures have been reported in literature for the synthesis of graphene
chemical vapor deposition (CVD) enables the preparation of high quality and large area single layer graphene films
Summary
A single sheet of sp hybridized carbon atoms densely packed in a honeycomb lattice, has received a great attention due to its fascinating properties.[1,2,3] A remarkable feature of graphene is that the energy of electrons is linearly dependent on the wave vector near the crossing points in the Brillouin zone. Graphene is expected to be flat, ripples occur due to thermal fluctuations.[1] Single‐layer and bi‐layer graphene were prepared by micro‐mechanical cleavage[5], several strategies have since been developed.[3, 13, 14] Graphene has been characterized by microscopic and other physical techniques including atomic force microscopy (AFM), transmission electron microscopy (TEM), scanning tunneling microscopy (STM) and Raman spectroscopy.[2] In this article we discuss synthetic aspects and some of the selected properties of graphene
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