On-surface Synthesis of Graphene Nanoribbon with Self-Assembled Monolayer Method

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K17843
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Functional solid state chemistry
• Research Institution: Nara Institute of Science and Technology
• Principal Investigator: Hayashi Hironobu 奈良先端科学技術大学院大学, 物質創成科学研究科, 特任助教 (00736936)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: グラフェンナノリボン / 化学吸着 / エッジ修飾 / 前駆体法 / ナノファイバー

Outline of Final Research Achievements

Graphene nanoribbons (GNRs) have drawn much attention as promising materials for next generation nanoelectronic devices. Here, we report the synthesis of the simplest model compounds toward developing a bottom-up synthesis of GNRs with a self-assembled monolayer (SAM) method. The binding units for the SAM method were introduced at two termini of the central aromatic core of the model compounds, which was not only for preparing a monolayer of model compounds but also for binding a gold surface ideally. Cyclic voltammograms of gold electrodes modified with the model compounds implied that annealing the substrates at 300 degree led to cyclodehydrogenation. In addition, we have successfully synthesized precursor molecules for edge-functionalized GNR and low band gap GNR. Furthermore, theoretical analysis revealed the key intermediate states during cyclodehydrogenation for synthesizing edge-functionalized GNRs.

Free Research Field

材料化学