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/

Global: Zendy Plus annual

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

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Graphene nanoribbons (GNRs) exhibit a broad range of physicochemicalproperties that critically depend on their width and edge topology. While thechemically stable GNRs with armchair edges (AGNRs) are semiconductors withwidth-tunable band gap, GNRs with zigzag edges (ZGNRs) host spin-polarized edgestates, which renders them interesting for applications in spintronic andquantum technologies. However, these states significantly increase theirreactivity. For GNRs fabricated via on-surface synthesis under ultrahigh vacuumconditions on metal substrates, the expected reactivity of zigzag edges is aserious concern in view of substrate transfer and device integration underambient conditions, but corresponding investigations are scarce. Using10-bromo-9,9':10',9''-teranthracene as a precursor, we have thus synthesizedhexanthene (HA) and teranthene (TA) as model compounds for ultrashort GNRs withmixed armchair and zigzag edges, characterized their chemical and electronicstructure by means of scanning probe methods, and studied their chemicalreactivity upon air exposure by Raman spectroscopy. We present a detailedidentification of molecular orbitals and vibrational modes, assign their originto armchair or zigzag edges, and discuss the chemical reactivity of these edgesbased on characteristic Raman spectral features.

On-surface synthesis and characterization of Teranthene and Hexanthene: Ultrashort graphene nanoribbons with mixed armchair and zigzag edges