2016
Self-assembling diacetylene molecules on atomically flat insulators
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
- Volume
- 18
- Number
- 46
- First page
- 31600
- Last page
- 31605
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1039/c6cp06749b
- Publisher
- ROYAL SOC CHEMISTRY
Single crystal sapphire and diamond surfaces are used as planar, atomically flat insulating surfaces, for the deposition of the diacetylene compound 10,12-nonacosadiynoic acid. The surface assembly is compared with results on hexagonal boron nitride (h-BN), highly oriented pyrolytic graphite (HOPG) and MoS2 surfaces. A perfectly flat-lying monolayer of 10,12-nonacosadiynoic acid self-assembles on h-BN like on HOPG and MoS2. On sapphire and oxidized diamond surfaces, we observed assemblies of standing-up molecular layers. Surface assembly is driven by surface electrostatic dipoles. Surface polarity is partially controlled using a hydrogenated diamond surface or totally screened by the deposition of a graphene layer on the sapphire surface. This results in a perfectly flat and organized SAM on graphene, which is ready for on-surface polymerization of long and isolated molecular wires under ambient conditions.
- Link information
- ID information
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- DOI : 10.1039/c6cp06749b
- ISSN : 1463-9076
- eISSN : 1463-9084
- Pubmed ID : 27834980
- Web of Science ID : WOS:000389333700025