English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We study the band gap of finiteN  A   =  7    armchair graphene nanoribbons (7‐AGNRs) on Au(111) through scanning tunneling microscopy/spectroscopy combined with density functional theory calculations. The band gap of 7‐AGNRs with lengths of 8 nm and more is converged to within 50 meV of its bulk value of    ≈  2  .  3    eV   , while the band gap opens by several hundred meV in very short 7‐AGNRs. We demonstrate that even an atomic defect, such as the addition of one hydrogen atom at the termini, has a significant effect – in this case, lowering the band gap. The effect can be captured in terms of a simple analytical model by introducing an effective “electronic length”.

Band Gap of Atomically Precise Graphene Nanoribbons as a Function of Ribbon Length and Termination