Epitaxial Order Driven by Surface Corrugation: Quinquephenyl Crystals on a Cu(110)-(2×1)O Surface

Resel, Roland; Koini, Markus; Novák, Jiřı́; Berkebile, Stephen; Koller, Georg; Ramsey, Michael G.

doi:10.3390/cryst9070373

Cited by 3 publications

(3 citation statements)

References 35 publications

(87 reference statements)

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“…As far as growth of 5P crystals is concerned, the literature mainly contains information on the growth of thin polycrystalline films on the substrates by thermal vacuum deposition [12][13][14], while there is no information on the growth of large single-crystalline 5P films. To obtain single crystals, growth methods from solutions are the most attractive because of their simplicity and efficiency, but, in this case, solubility of the oligomer for the crystal growth is a key factor.…”

Section: Introductionmentioning

confidence: 99%

Large Area Free-Standing Single Crystalline Films of p-Quinquephenyl: Growth, Structure and Photoluminescence Properties

et al. 2020

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Studies of the growth of large-area free-standing single-crystalline films of p-quinquephenyl are presented. High-quality crystals were grown by slow cooling of a hot chlorobenzene solution. Worse quality large-area free-standing single crystals of p-quinquephenyl were also grown by using physical vapor transport and used for comparison. The crystal structure of p-quinquephenyl at 293 K and 85 K was refined by single-crystal X-ray diffraction. The optical absorption and photoluminescence spectra of solutions and crystalline films were obtained and analyzed; a positive solvatochromic effect was detected.

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Section: Introductionmentioning

confidence: 99%

Large Area Free-Standing Single Crystalline Films of p-Quinquephenyl: Growth, Structure and Photoluminescence Properties

et al. 2020

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“…For nanomaterials, it is also found to play a critical role in changing conventional bulk properties, such as elastic modulus [5], piezoelectricity [6], thermal conductivity [7], etc. Thus, surface property is important for the determination of material properties and structure performances [8][9][10][11]. The concept of surface free energy (called surface energy for short) was first introduced in fluid mechanics for studying surface phenomena.…”

Section: Introductionmentioning

confidence: 99%

Calculation of Surface Properties of Cubic and Hexagonal Crystals through Molecular Statics Simulations

Tang

Chen

2020

Crystals

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Surface property is an important factor that is widely considered in crystal growth and design. It is also found to play a critical role in changing the constitutive law seen in the classical elasticity theory for nanomaterials. Through molecular static simulations, this work presents the calculation of surface properties (surface energy density, surface stress and surface stiffness) of some typical cubic and hexagonal crystals: face-centered-cubic (FCC) pure metals (Cu, Ni, Pd and Ag), body-centered-cubic (BCC) pure metals (Mo and W), diamond Si, zincblende GaAs and GaN, hexagonal-close-packed (HCP) pure metals (Mg, Zr and Ti), and wurzite GaN. Sound agreements of the bulk and surface properties between this work and the literature are found. New results are first reported for the surface stiffness of BCC pure metals, surface stress and surface stiffness of HCP pure metals, Si, GaAs and GaN. Comparative studies of the surface properties are carried out to uncover trends in their behaviors. The results in this work could be helpful to the investigation of material properties and structure performances of crystals.

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“…In the following we will briefly discuss the contributed papers in order of their submission date. In the first contribution Roland Resel et al [1] study the epitaxial order of organic thin films. Epitaxy with organic molecules is a rich field due to the wide variety of available organic molecules and their application in organic electronics [2].…”

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confidence: 99%

Investigation of Nanostructures with X-ray Scattering Techniques

Kriegner

Dopita

2019

Crystals

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incidence small angle X-ray scattering, X-ray beam induced current.The structural investigations of nanomaterials motivated by their large variety and diverse set of applications have attracted considerable attention. In particular, the everimproving machinery, both in laboratory and at large scale facilities, together with the methodical improvements available for studying nanostructures ranging from epitaxial nanomaterials, nanocrystalline thin films and coatings, to nanoparticles and colloidal nanocrystals allows us to gain a more detailed understanding of their structural properties. As the structure essentially determines the physical properties of the materials, this advances the possibilities of structural studies and also enables a deeper understanding of the structure to property relationships. In this special issue entitled "Investigation of Nanostructures with X-ray Scattering Techniques" five contributions show the recent progress in various research fields. Contributions cover topics as diverse as neutron scattering on magnetic multilayer films, epitaxial orientation of organic thin films, nanoparticle ordering and chemical composition analysis, and the combination of nanofocused X-ray beams with electrical measurements.In the following we will briefly discuss the contributed papers in order of their submission date. In the first contribution Roland Resel et al.[1] study the epitaxial order of organic thin films. Epitaxy with organic molecules is a rich field due to the wide variety of available organic molecules and their application in organic electronics [2]. An additionally enriching fact is that by the epitaxial growth often metastable, previously unknown, crystal structures of the molecule are found [3]. In their contribution Resel et al. showed that even in cases where the bulk crystal structure prevails during epitaxial growth, the heteroepitaxial orientation of the organic thin film with respect to a single crystalline substrate is a complicated issue on its own. The authors show that for quinquephenyl (5P) films on Cu(110)(2x1)O single crystals the lattice misfit minimization fails to predict the actually occurring orientation of the molecules on the surface. Instead, it is the initial growth stage where the individual molecules fill with their rod-like shape the grooves present in the surface corrugation of the Cu-oxide surface, which determines the epitaxial orientation.Ryuji Maruyama et al.[4] present a study on the magnetization reversal behavior of thin polycrystalline Fe/Si multilayers by polarized neutron scattering and grazing incidence small-angle neutron scattering. The study shows how the magnetic properties of such multilayers differ from the bulk behavior. In particular, the authors show that in contrast to

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Epitaxial Order Driven by Surface Corrugation: Quinquephenyl Crystals on a Cu(110)-(2×1)O Surface

Cited by 3 publications

References 35 publications

Large Area Free-Standing Single Crystalline Films of p-Quinquephenyl: Growth, Structure and Photoluminescence Properties

Large Area Free-Standing Single Crystalline Films of p-Quinquephenyl: Growth, Structure and Photoluminescence Properties

Calculation of Surface Properties of Cubic and Hexagonal Crystals through Molecular Statics Simulations

Investigation of Nanostructures with X-ray Scattering Techniques

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