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Article Dans Une Revue Physical Chemistry Chemical Physics Année : 2016

Self-assembling diacetylene molecules on atomically flat insulators

Résumé

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.

Dates et versions

hal-01712755 , version 1 (19-02-2018)

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Elisseos Verveniotis, Yuji Okawa, Marina V. Makarova, Yasuo Koide, Jiangwei Liu, et al.. Self-assembling diacetylene molecules on atomically flat insulators. Physical Chemistry Chemical Physics, 2016, 18 (46), pp.31600-31605. ⟨10.1039/c6cp06749b⟩. ⟨hal-01712755⟩
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