- AutorIn
- Doreen Beyer Technische Universität Dresden, Fakultät für Chemie und Lebensmittelchemie, Professur für Molekulare Funktionsmaterialien#Technische Universität Dresden, Center for Advancing Electronics Dresden (cfaed)
- Shiyong WangEmpa, Swiss Federal Laboratories for Material Science and Technology
- Carlo A. PignedoliEmpa, Swiss Federal Laboratories for Material Science and Technology
- Jason Melidonie
- Bingkai Yuan
- Can Li
- Jan Wilhelm
- Pascal Ruffieux
- Dr. Reinhard Berger
- Prof. Klaus Müllen
- Prof. Roman Fasel
- Prof. Dr. Xinliang Feng
- Titel
- Graphene Nanoribbons Derived from Zigzag Edge-Encased Poly(para-2,9-dibenzo[bc,kl]coronenylene) Polymer Chains
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-370107
- Quellenangabe
- Journal of the American Chemical Society Erscheinungsort: Washington
Verlag: ACS Publications
Erscheinungsjahr: 2019
Jahrgang: 141
Heft: 7
Seiten: 2843-2846
E-ISSN: 1520-5126 - Erstveröffentlichung
- 2019
- Abstract (EN)
- In this work, we demonstrate the bottom-up on-surface synthesis of poly(para-dibenzo[bc,kl]-coronenylene) (PPDBC), a zigzag edge-encased analog of poly(para-phenylene) (PPP), and its lateral fusion into zigzag edge-extended graphene nanoribbons (zeeGNRs). Toward this end, we designed a dihalogenated di(meta-xylyl)anthracene monomer displaying strategic methyl groups at the substituted phenyl ring and investigated its applicability as precursor in the thermally induced surface-assisted polymerization and cyclodehydrogenation. The structure of the resulting zigzag edge-rich (70%) polymer PPDBC was unambiguously confirmed by scanning tunneling microscopy (STM) and non-contact atomic force microscopy (nc-AFM). Remarkably, by further thermal treatment at 450 °C two and three aligned PPDBC chains can be laterally fused into expanded zeeGNRs, with a ribbon width of nine (N = 9) up to 17 (N = 17) carbon atoms. Moreover, the resulting zeeGNRs exhibit a high ratio of zigzag (67%) vs armchair (25%) edge segments and feature electronic band gaps as low as 0.9 eV according to gaps quasiparticle calculations.
- Andere Ausgabe
- Link zum Artikel, der zuerst in der Zeitschrift 'Journal of the American Chemical Society' erschienen ist.
DOI: 10.1021/jacs.8b10407 - Freie Schlagwörter (DE)
- Zick-Zack-Kante, Graphen-Nanobänder, Oberflächensynthese
- Freie Schlagwörter (EN)
- zigzag edge, Graphene Nanoribbons, surface synthesis
- Klassifikation (DDC)
- 540
- Verlag
- ACS Publications, Washington
- Förder- / Projektangaben
- Europäischer Sozialfonds Horizon2020
Graphenzentrum Dresden (GraphD)
ID: 100270084 - Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:14-qucosa2-370107
- Veröffentlichungsdatum Qucosa
- 03.06.2020
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch
- Lizenz / Rechtehinweis