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Updated: May 18, 2026
10:23
Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies
Published on: November 5, 2015
Atomic covalent functionalization of graphene.
1Department of Materials Science, Northwestern University, Evanston, Illinois 60208-3108, United States.
Accounts of Chemical Research
|October 4, 2012
Summary
Researchers are exploring covalent modification of graphene using atomic radicals to tune its electronic properties for advanced technologies. This method enables controlled chemical adjustments, unlocking new applications for this 2D material.
Area of Science:
- Materials Science
- Nanotechnology
- Physical Chemistry
Background:
- Graphene, a 2D material, possesses unique electronic and physical properties making it suitable for next-generation technologies.
- Current applications are limited by the inability to chemically adjust graphene's electronic properties, particularly creating a band gap.
- Covalent modification is key to unlocking graphene's full potential for electronics and photonics.
Purpose of the Study:
- To review recent theoretical and experimental studies on covalent modification of graphene using gas-phase atomic radicals.
- To discuss the mechanisms and outcomes of radical-based functionalization for tuning graphene's properties.
- To highlight the potential for creating new 2D materials with tailored characteristics.
Main Methods:
- Utilizing gas-phase atomic radicals (hydrogen, fluorine, oxygen) for covalent functionalization of graphene.
- Employing high-energy activation steps to initiate reactions on the graphene basal plane.
- Analyzing reactions using scanning tunneling microscopy (STM) and comparing with theoretical studies.
Main Results:
- Atomic radicals can overcome kinetic barriers for covalent bonding on graphene without damaging the lattice.
- Substrate-mediated interactions significantly influence initial binding events.
- Surface coverage and reactant species dictate the final composition and structure of modified graphene.
Conclusions:
- Covalent modification using atomic radicals offers a promising route for homogeneous functionalization of graphene.
- This approach allows for the creation of new 2D materials with tunable electronic and physical properties.
- Controlled chemical modification is essential for realizing graphene's potential in diverse technological applications.
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