What is it about?
In this work we highlight the effect of the diazonium chemistry on the electronic properties of graphene on SiC. On the basis of X-ray and synchrotron-based photoemission experiments we are able to prove that the 3,4,5-trimethoxybenzenediazonium (TMeOD) units, reduced and chemisorbed onto graphene by using electrochemistry, preserve the electronic structure of the Dirac cone, though inducing a slightly additional n-type doping of graphene, as revealed by a downshift of the Dirac cone probed by angle-resolved photoemission experiments.
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Why is it important?
The effect of covalent functionalization using aryl diazonium salts on the electronic properties of graphene.
Perspectives
Plenty of strategies focused on covalent interaction have been developed to functionalize the graphene surface in order to employ it in a wide range of applications. Among them, the use of radical species including nitrene, carbene and aryl diazonium salts is regarded as a promising strategy to establish covalent functionalization of graphene.
Gina Ambrosio
Associatie KU Leuven
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This page is a summary of: Impact of covalent functionalization by diazonium chemistry on the electronic properties of graphene on SiC, Nanoscale, January 2020, Royal Society of Chemistry,
DOI: 10.1039/d0nr01186j.
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