Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 137, Issue 12, Pages 4022-4025Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja511995r
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Funding
- National Natural Science Foundation of China (NSFC) [91227201]
- German Science Foundation (DFG) [TRR61, SFB858, SPP1459]
- European Research Council grant on NANO-GRAPH, Graphene Flagship [CNECT-ICT-604391]
- Major State Basic Research Development Program of China (973 Program) [2013CB933500, 2014CB932600]
- NSFC [21403149, 91233115, 21273158]
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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 Delta = 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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