Spatially Resolved Covalent Functionalization Patterns on Graphene

0498897 - ÚFCH JH 2020 RIV DE eng J - Journal Article
Valenta, Leoš - Kovaříček, Petr - Valeš, Václav - Bastl, Zdeněk - Drogowska, Karolina - Verhagen, T. A. - Cibulka, R. - Kalbáč, Martin
Spatially Resolved Covalent Functionalization Patterns on Graphene.
Angewandte Chemie - International Edition. Roč. 58, č. 5 (2019), s. 1324-1328. ISSN 1433-7851. E-ISSN 1521-3773
R&D Projects: GA ČR(CZ) GJ18-09055Y; GA MŠMT(CZ) LTC18039; GA MŠMT(CZ) LM2015073; GA MŠMT(CZ) EF16_013/0001821
Institutional support: RVO:61388955
Keywords : graphene * Mitsunobu reaction * patterned functionalization * photochemistry * Raman spectroscopy
OECD category: Physical chemistry
Impact factor: 12.959, year: 2019
Method of publishing: Limited access

Spatially resolved functionalization of 2D materials is highly demanded but very challenging to achieve. The chemical patterning is typically tackled by preventing contact between the reagent and material, which brings various accompanying challenges. Photochemical transformation on the other hand inherently provides remote high spatiotemporal resolution using the cleanest reagent—a photon. Herein, we combine two competing reactions on a graphene substrate to create functionalization patterns on a micrometer scale via the Mitsunobu reaction. The mild reaction conditions allow introduction of covalently dynamic linkages, which can serve as reversible labels for surface- or graphene-enhanced Raman spectroscopy characterization of the patterns prepared. The proposed methodology thus provides a pathway for local introduction of arbitrary functional groups on graphene.
Permanent Link: http://hdl.handle.net/11104/0291188