Journal article
Region-Selective Self-Assembly of Functionalized Carbon Allotropes from Solution
Publication Details
Authors: | Wang, Z.; Mohammadzadeh, S.; Schmaltz, T.; Kirschner, J.; Khassanov, A.; Eigler, S.; Mundloch, U.; Backes, C.; Steinrueck, H.; Magerl, A.; Hauke, F.; Hirsch, A.; Halik, M. |
Publisher: | AMER CHEMICAL SOC |
Publication year: | 2013 |
Journal: | ACS Nano |
Pages range : | 11427-11434 |
Volume number: | 7 |
Issue number: | 12 |
Start page: | 11427 |
End page: | 11434 |
Number of pages: | 8 |
ISSN: | 1936-0851 |
DOI-Link der Erstveröffentlichung: |
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 OD system, molecules of C-60 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.
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 OD system, molecules of C-60 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.
Keywords
carbon allotropes, Carbon nanotubes, dip-coating, fullerene, reduced graphene oxide, self-assembled monolayer, self-assembly
