DSpace Repository

Role of Metal Centers in Tuning the Electronic Properties of Graphene-Based Conductive Interfaces

Show simple item record

dc.contributor.author Osella, S.
dc.contributor.author Kiliszek, M.
dc.contributor.author Harputlu, E.
dc.contributor.author Ünlü, Cumhur Gökhan
dc.contributor.author Ocakoglu, K.
dc.contributor.author Trzaskowski, B.
dc.contributor.author Kargul, J.
dc.date.accessioned 2020-06-08T12:11:42Z
dc.date.available 2020-06-08T12:11:42Z
dc.date.issued 2019
dc.identifier.issn 19327447 (ISSN)
dc.identifier.uri http://hdl.handle.net/11499/30195
dc.description.abstract A major bottleneck in the fabrication of efficient bio-organic nanoelectronic devices resides in the strong charge recombination that is present at the different interfaces forming the complex system. An efficient way to overcome this bottleneck is to add a self-assembled monolayer (SAM) of molecules between the biological material and electrode that promotes an efficient direct electron transfer while minimizing wasteful processes of charge recombination. In this work, the presence of a pyrene-nitrilotriacetic acid layer carrying different metal centers as the SAM is physisorbed on graphene is fully described by means of electrochemical analysis, field-emission scanning electron microscopy, photoelectrochemical characterization, and theoretical calculations. Our multidisciplinary study reveals that the metal center holds the key role in the efficient electron transfer at the interface. While Ni2+ is responsible for the electron transfer from the SAM to graphene, Co2+ and Cu2+ force an opposite transfer from graphene to SAM. Moreover, since Cu2+ inhibits the electron transfer due to a strong charge recombination, Co2+ seems to be the transition metal of choice for the efficient electron transfer. © 2019 American Chemical Society.
dc.language.iso English
dc.publisher American Chemical Society
dc.relation.isversionof 10.1021/acs.jpcc.9b00170
dc.rights info:eu-repo/semantics/openAccess
dc.subject Biological materials
dc.subject Electrochemistry
dc.subject Electron transitions
dc.subject Electronic properties
dc.subject Field emission microscopes
dc.subject Scanning electron microscopy
dc.subject Transition metals
dc.subject Charge recombinations
dc.subject Direct electron transfer
dc.subject Electrochemical analysis
dc.subject Electronic properties of graphene
dc.subject Field emission scanning electron microscopy
dc.subject Nanoelectronic devices
dc.subject Photoelectrochemical characterization
dc.subject Theoretical calculations
dc.subject Graphene
dc.title Role of Metal Centers in Tuning the Electronic Properties of Graphene-Based Conductive Interfaces
dc.type Article
dc.identifier.volume 123
dc.identifier.issue 14
dc.identifier.startpage 8623
dc.identifier.endpage 8632
dc.relation.publicationCategory Uluslararası Hakemli Dergi
dc.identifier.index Scopus
dc.identifier.index WOS

Files in this item

This item appears in the following Collection(s)

Show simple item record