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Updated: May 13, 2026

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
Published on: July 24, 2015
Tunability by alkali metal cations of photoinduced charge separation in azacrown functionalized graphene
Rafael Ballesteros-Garrido1, Maykel de Miguel, Antonio Doménech-Carbó
1Instituto Universitario de Tecnología Química CSIC-UPV and Departamento de Química, Univ. Politécnica de Valencia, Av. De los Naranjos s/n, 46022 Valencia, Spain.
Abstract:
A modified graphene oxide containing aza-9-crown-3 ether units covalently anchored has been prepared; aqueous suspensions of this material in the presence of Li(+), Na(+) and K(+) cations exhibit enhanced electrochemical response, enhanced photoinduced charge separation and longer lifetimes, facts that can be attributed to stabilization of electrons on graphene oxide by the nearby alkali metal cation-azacrown complexes.
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