作者: Franck Bocquet , Laurent Nony , Franck Para , Philipda Luangprasert , Jean-Valère Naubron
DOI: 10.1103/PHYSREVB.97.235434
关键词: Chemical physics 、 Anisotropy 、 Spectral line 、 Thin film 、 Spectroscopy 、 Adsorption 、 Alkali metal 、 Materials science 、 Halide 、 Molecule
摘要: The combined characterization of structural and optical properties organic interfaces adsorbed on inorganic solid substrates down to the molecular scale is crucial from a fundamental point view, but also if one tackles efficient applied devices. In this work, set joint analyses self-assemblies $\ensuremath{\pi}$-conjugated bis-pyrene derivatives upon adsorption two alkali halides bulk insulators reported. analysis performed by means noncontact atomic force microscopy in ultrahigh vacuum either at room or liquid-nitrogen temperature with resolution. surface coverage ranges submonolayer (ML) regime up 5 ML. situ spectroscopy differential reflectance (DR) spectroscopy. A thorough fitting methodology DR spectra allows us derive complete dielectric function adlayers treated an anisotropic formalism, albeit restricted uniaxial approximation. Conclusions regarding process condensation molecules into H aggregates its early stages phase are drawn. This work highlights three main reasons bridge high-resolution layers, which all towards necessity constrain process, namely, (i) characterizing growth mode molecules, (ii) identifying order resulting assemblies, (iii) discriminating their constitutive phases resolution imaging.