0486087 - FZÚ 2018 RIV GB eng J - Journal Article
Verveniotis, E. - Okawa, Y. - Makarova, Marina - Koide, Y. - Liu, J. - Šmíd, B. - Watanabe, K. - Taniguchi, T. - Komatsu, K. - Minari, T. - Liu, X. - Joachim, Ch. - Aono, M.
Self-assembling diacetylene molecules on atomically flat insulators.
Physical Chemistry Chemical Physics. Roč. 18, č. 46 (2016), s. 31600-31605. ISSN 1463-9076. E-ISSN 1463-9084
Institutional support: RVO:68378271
Keywords : scanning-tunneling-microscopy * chain polymerization * diamond surfaces * thin-films * monolayers * electronics * graphite * conductivity * graphene * design
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 4.123, year: 2016

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.
Permanent Link: http://hdl.handle.net/11104/0280968