Spatially Resolved Covalent Functionalization Patterns on Graphene

0498897 - ÚFCH JH 2020 RIV DE eng J - Článek v odborném periodiku
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
Grant CEP: GA ČR(CZ) GJ18-09055Y; GA MŠMT(CZ) LTC18039; GA MŠMT(CZ) LM2015073; GA MŠMT(CZ) EF16_013/0001821
Institucionální podpora: RVO:61388955
Klíčová slova: graphene * Mitsunobu reaction * patterned functionalization * photochemistry * Raman spectroscopy
Obor OECD: Physical chemistry
Impakt faktor: 12.959, rok: 2019
Způsob publikování: Omezený přístup

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.
Trvalý link: http://hdl.handle.net/11104/0291188