期刊
ACS NANO
卷 11, 期 9, 页码 9321-9329出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.7b04728
关键词
nonacene; on-surface synthesis; dehydrogenation; scanning tunneling microscopy; atomic force microscopy; hydroacenes
类别
资金
- National Science Center, Poland [2014/15/D/ST3/02975]
- European Research Council [321066]
- MINECO/FEDER, UE [CT Q2016-75960-P]
- MINECO-Severo Ochoa Excellence Acreditation [SEV-2013-0319]
- CERCA Program/Generalitat de Catalunya
- National Science Centre (Poland) [DEC-2014/15/B/ST5/04244, 2017/24/T/ST5/00262]
- Foundation for Polish Science (FNP)
- European Regional Development Fund [POIG.02.01.00-12-023/08]
- KNOW [KNOW/59/SS/RZ/2016]
The on-surface synthesis of nonacene has been accomplished by dehydrogenation of an air-stable partially saturated precursor, which could be aromatized by using a combined scanning tunneling and atomic force microscope as well as by on-surface annealing. This transformation allowed the in-detail analysis of the electronic properties of nonacene molecules physisorbed on Au(111) by scanning tunneling spectroscopy measurements. The spatial mapping of molecular orbitals was corroborated by density functional theory calculations. Furthermore, the thermally induced dehydrogenation uncovered the isomerization of intermediate dihydrononacene species, which allowed for their in-depth structural and electronic characterization.
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