title: Region-selective self-assembly of functionalized carbon allotropes from solution.
abstract: Approaches for the selective self-assembly of functionalized carbon allotropes from solution are developed and validated for 0D-fullerenes, 1D-carbon nanotubes and 2D-graphene. By choosing the right molecular interaction of self-assembled monolayers (serving the surface) with the functionalization features of carbon materials, which provide the solubility but also serve the driving force for assembly, we demonstrate a region-selective and self-terminating assembly of the materials. Active layers of the carbon allotropes can be selectively deposited in the channel region of thin-film transistor (TFT) devices by this approach. As an example for a 0D system, molecules of C60 functionalized octadecylphosphonic acids are used to realize self-assembled monolayer field-effect transistors (SAMFETs) based on a selective molecular exchange reaction of stearic acid in the channel region. For noncovalently functionalized single-walled carbon nanotubes (SWCNTs) and graphene oxide (GO) flakes, the electrostatic Coulomb interactions between the functional groups of the carbon allotropes and the charged head groups of a SAM dielectric layer are utilized to implement the selective deposition.
authors.affiliation: Organic Materials & Devices (OMD), Institute of Polymer Materials, University Erlangen-Nürnberg , Martensstraße 7, 91058 Erlangen, Germany.
authors.forename: Zhenxing
authors.initials: Z
authors.lastname: Wang
authors.forename: Saeideh
authors.initials: S
authors.lastname: Mohammadzadeh
authors.forename: Thomas
authors.initials: T
authors.lastname: Schmaltz
authors.forename: Johannes
authors.initials: J
authors.lastname: Kirschner
authors.forename: Artoem
authors.initials: A
authors.lastname: Khassanov
authors.forename: Siegfried
authors.initials: S
authors.lastname: Eigler
authors.forename: Udo
authors.initials: U
authors.lastname: Mundloch
authors.forename: Claudia
authors.initials: C
authors.lastname: Backes
authors.forename: Hans-Georg
authors.initials: HG
authors.lastname: Steinrück
authors.forename: Andreas
authors.initials: A
authors.lastname: Magerl
authors.forename: Frank
authors.initials: F
authors.lastname: Hauke
authors.forename: Andreas
authors.initials: A
authors.lastname: Hirsch
authors.forename: Marcus
authors.initials: M
authors.lastname: Halik