| Autor: |
Supur, Mustafa, Van Dyck, Colin, Bergren, Adam J., McCreery, Richard L. |
| Zdroj: |
ACS Applied Materials & Interfaces; 20240101, Issue: Preprints |
| Abstrakt: |
Large-area molecular electronic junctions consisting of 5-carbon wide graphene ribbons (GR) with lengths of 2–12 nm between carbon electrodes were fabricated by electrochemical reduction of diazotized 1,8-diaminonaphthalene. Their conductance greatly exceeds that observed for other molecular junctions of similar thicknesses, by a factor of >1 × 104compared to polyphenylenes and >1 × 107compared to alkane chains. The remarkable increase of conductance of the GR nanolayer results from (i) uninterrupted planarity of fused-arene structure affording extensive π-electron delocalization and (ii) enhanced electronic coupling of molecular layer with the carbon bottom contact by two-point covalent bonding, in agreement with DFT-based simulations. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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