On-Surface Synthesis of Rylene-Type Graphene Nanoribbons

Zhang H, Lin H, Sun K, Chen L, Zagranyarski Y, Aghdassi N, Duhm S, Li Q, Zhong D, Li Y, Müllen K, Fuchs H, Chi LF

Research article (journal) | Peer reviewed

Abstract

The narrowest armchair graphene nanoribbon (AGNR) with five carbons across the width of the GNR (5-AGNR) was synthesized on Au(111) surfaces via sequential dehalogenation processes in a mild condition by using 1,4,5,8-tetrabromonaphthalene as the molecular precursor. Gold-organic hybrids were observed by using high-resolution scanning tunneling microscopy and considered as intermediate states upon AGNR formation. Scanning tunneling spectroscopy reveals an unexpectedly large band gap of Δ = 2.8 ± 0.1 eV on Au(111) surface which can be interpreted by the hybridization of the surface states and the molecular states of the 5-AGNR.

Details about the publication

JournalJournal of the American Chemical Society (J. Am. Chem. Soc.)
Volume137
Issue12
Page range4022-4025
StatusPublished
Release year2015
Language in which the publication is writtenEnglish
DOI10.1021/ja511995r
Keywordsgraphene nanoribbon; Gold-organic; 5-AGNR

Authors from the University of Münster

Aghdassi, Nabi
Institute of Physics (PI)
Chi, Lifeng
Interface Physics Group (Prof. Fuchs)
Fuchs, Harald
Interface Physics Group (Prof. Fuchs)
Zhang, Haiming
Interface Physics Group (Prof. Fuchs)
Zhong, Dingyong
Institute of Physics (PI)