On-Surface Synthesis of Rylene-Type Graphene Nanoribbons
Journal of the American Chemical Society2015Vol. 137(12), pp. 4022–4025
Citations Over TimeTop 1% of 2015 papers
Haiming Zhang, Haiping Lin, Kewei Sun, Long Chen, Yulian Zagranyarski, Nabi Aghdassi, Steffen Duhm, Qing Li, Dingyong Zhong, Youyong Li, Kläus Müllen, Harald Fuchs, Lifeng Chi
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.
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