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Imaging the reactivity and width of graphene’s boundary region

  • The reactivity of graphene at its boundary region has been imaged using non-linear spectroscopy to address the controversy whether the terraces of graphene or its edges are more reactive. Graphene was functionalised with phenyl groups, and we subsequently scanned our vibrational sum-frequency generation setup from the functionalised graphene terraces across the edges. A greater phenyl signal is clearly observed at the edges, showing evidence of increased reactivity in the boundary region. We estimate an upper limit of 1 mm for the width of the CVD graphene boundary region.

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Author:Huda S. AlSalemORCiD, Soha T. Al-Goul, Alejandro García-Miranda FerrariORCiD, Dale A. C. BrownsonORCiD, Luis VelardeORCiD, Sven P. K. KöhlerORCiD
DOI original:https://doi.org/10.1039/D0CC02675A
Parent Title (English):Chemical Communications
Document Type:Article
Year of Completion:2020
Publishing Institution:Hochschule Hannover
Release Date:2022/05/19
GND Keyword:Graphen; Reaktivität; Nichtlineare Spektroskopie
First Page:9612
Last Page:9615
Institutes:Fakultät II - Maschinenbau und Bioverfahrenstechnik
DDC classes:660 Technische Chemie
Licence (English):License LogoCreative Commons - CC BY-NC - Attribution-NonCommercial 3.0 Unported