title: Tunability by alkali metal cations of photoinduced charge separation in azacrown functionalized graphene.
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.
authors.affiliation: Instituto Universitario de Tecnología Química CSIC-UPV and Departamento de Química, Univ. Politécnica de Valencia, Av. De los Naranjos s/n, 46022 Valencia, Spain.
authors.forename: Rafael
authors.initials: R
authors.lastname: Ballesteros-Garrido
authors.forename: Maykel
authors.initials: M
authors.lastname: de Miguel
authors.forename: Antonio
authors.initials: A
authors.lastname: Doménech-Carbó
authors.forename: Mercedes
authors.initials: M
authors.lastname: Alvaro
authors.forename: Hermenegildo
authors.initials: H
authors.lastname: Garcia