Self-Assembled 1-Octadecanethiol Monolayers on Graphene for Mercury Detection

Citations Over TimeTop 10% of 2010 papers

Abstract

We report studies on surface modification of graphene with 1-octadecanethiol and its application as heavy metal sensors. The alkanethiol molecules can self-assemble into large-scale highly ordered monolayers on single-layer graphene regardless of the roughness of graphene surfaces inherited from the underlying amorphorous silicon oxide (SiO2) dielectric substrates. Atomically resolved scanning tunneling microscopy imaging of modified graphene sheets on SiO2 was conducted to reveal configuration details of the self-assembled structure. Functionalization of graphene field effect transistors (Gra-FETs) with 1-octadecanethiol was realized and successfully explored for mercury(II) (Hg2+) detection at 10 ppm.

Related Papers

• Self-assembled monolayers of thiols(1998)
• → Mixed SAMs of backbone-functionalized tribenzotriquinacenes and alkanethiols: Synthesis, preparation and STM-investigations(2015)10 cited
• → Scanning tunneling microscopy of locally derivatized self-assembled organic monolayers(2003)3 cited
• CYCLIC VOLTAMMETRY STUDY OF SELF-ASSEMBLED LAYER ON SILVER(2006)
• Formation process and topography characteristics of OTS self-assembled monolayers(2002)