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Covalent 2D-Engineering of Graphene by Spatially Resolved Laser Writing/Reading/Erasing
Konstantin Felix Edelthalhammer1, Daniela Dasler1, Lisa Jurkiewicz1
1Department of Chemistry and Pharmacy & Joint Institute of Advance Materials and Processes (ZMP), Friedrich-Alexander University of Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany.
Angewandte Chemie (International Ed. in English)
|August 19, 2020
Summary
Researchers developed a reversible laser-based method for covalent 2D-patterning of graphene. This technique allows for controlled chemical modifications on graphene surfaces, enabling write, read, and erase functionalities.
Area of Science:
- Materials Science
- Nanotechnology
- Surface Chemistry
Background:
- Graphene's unique properties make it promising for advanced electronics and sensors.
- Precise chemical modification of graphene is crucial for tailoring its functionality.
- Existing methods for graphene functionalization often lack spatial control or reversibility.
Purpose of the Study:
- To develop a facile and efficient method for covalent 2D-patterning of monolayer graphene.
- To achieve controlled, laser-initiated chemical modifications on graphene surfaces.
- To demonstrate a reversible functionalization process with write/read/erase capabilities.
Main Methods:
- Utilized laser irradiation for photo-cleavage of dibenzoylperoxide (DBPO).
- Optimized radical addition reactions to non-activated graphene.
- Employed scanning Raman microscopy (SRM) for monitoring functionalization.
Main Results:
- Achieved controlled covalent 2D-patterning of graphene via spatially resolved laser writing.
- Demonstrated that the covalent 2D-functionalization of graphene is completely reversible.
- Established a system for write/read/erase control over chemical information on graphene.
Conclusions:
- The developed method offers a novel approach for reversible covalent patterning of graphene.
- This technique opens possibilities for dynamic chemical information storage and manipulation on 2D materials.
- The laser-induced reversible functionalization is a significant advancement for graphene-based device fabrication and functionalization.
