On-surface synthesis of super-heptazethrene

Abstract

<p>On-surface synthesis of a zethrene compound, super-heptazethrene, is reported on Au(111), along with its detailed characterization using scanning tunneling microscopy.</p>

Synthetic Tailoring of Graphene Nanostructures with Zigzag‐Edged Topologies: Progress and Perspectives

“…Recently, the groups of Tobe and Wu have paid particular attention to zethrene and its higher homologues (such as heptazethrene and octazethrene) with open‐shell characteristics [53–57] . Very recently, we in collaboration with the Fasel group demonstrated the on‐surface synthesis of super‐heptazethrene on Au(111) [58] . In contrast to its open‐shell singlet ground state in solution, super‐heptazethrene presents a closed‐shell character on Au(111).…”

“…[53][54][55][56][57] Very recently,w ei n collaboration with the Fasel group demonstrated the onsurface synthesis of super-heptazethrene on Au(111). [58] In contrast to its open-shell singlet ground state in solution, super-heptazethrene presents ac losed-shell character on Au (111). Since there have already been excellent reviews summarizing phenalenyl-based [47,48] and zethrene-type radicals, [59][60][61][62][63] we will not discuss them further in this Minireview.…”

Engineering the magnetism of nanographene via co-depositing hetero precursors

“…However, as an alternative method, on surface synthesis under ultra-high vacuum has emerged as a powerful flexible synthetic toolkit in recent years 14,15 . The current issues of carbon magnetism involve around three aspects: NG or graphene nanoribbons (GNR) with spin-polarized zigzag edges states [16][17][18][19] , sublattice imbalance as guided by Lerb's theorem for bipartite latices [20][21][22][23][24] and NGs with non-Kekulé structure which is formed via Coulomb repulsion between valence electrons [25][26][27][28][29][30][31][32] .…”

Maßgeschneiderte Synthese von Graphennanostrukturen mit Zickzack‐Rändern

“…Arbeiten zu Zethren und seinen höheren radikalischen Homologen wie Heptazethren und Octazethren [53–57] . Uns gelang kürzlich in Kooperation mit der Gruppe von Fasel die Synthese von Super‐Heptazethren auf einer Au(111)‐Oberfläche [58] . Im Unterschied zu seinem radikalischen Singulettgrundzustand in Lösung repräsentiert sich Super‐Heptazethren auf der Au(111)‐Oberfläche als Molekül mit geschlossener Valenzschale (closed shell).…”

“…[53][54][55][56][57] Uns gelang kürzlich in Kooperation mit der Gruppe von Fasel die Synthese von Super-Heptazethren auf einer Au(111)-Oberfläche. [58] Im Unterschied zu seinem radikalischen Singulettgrundzustand in Lçsung repräsentiert sich Super-Heptazethren auf der Au(111)-Oberfläche als Molekülm it geschlossener Va lenzschale (closed shell). Da bereits hervorragende Übersichtsartikel im Bereich der Phenalenyl- [47,48] und Zethrenradikale vorhanden sind, [59][60][61][62][63] werden diese im vorliegenden Kurzaufsatz nicht näher erläutert.…”