Study of the orientation and frequency of occurrence of elementary steps on the (010) cleavage face of potassium acid phthalate single crystals

Borc, J.; Sangwal, K.

doi:10.1016/j.susc.2004.03.004

Cited by 18 publications

(18 citation statements)

References 17 publications

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“…In the present study we follow this way, using the highly ordered cleavage plane of potassium hydrogen phthalate -KAP(010) -as organic template for the growth study. This surface is molecularly flat and shows phenyl rings pointing out of the crystal [15]. Furthermore, it displays two distinct directions of surface corrugations running along <101> and [001].…”

Section: Introductionmentioning

confidence: 99%

Epitaxially grown sexiphenyl nanocrystals on the organic KAP(010) surface

Haber

Resel

Thierry

et al. 2008

Physica E: Low-dimensional Systems and Nanostructures

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1 Abstract: Nanocrystals of the organic molecule sexiphenyl are grown on the (010) cleavage plane of potassium hydrogen phthalate (KAP). The single crystalline organic surface is composed exclusively by phenyl rings and displays two distinct directions of aromatic rows forming surface corrugations. Sexiphenyl crystals grow epitaxially ordered with the (20-3) plane parallel to KAP(010) with the long molecular axes of the molecule aligned along one specific surface corrugation; empirical force field calculations confirm the experimentally observed epitaxial alignment of the sexiphenyl crystals. The sexiphenyl crystals grow as elongated islands, which can be shown to be of single crystalline nature.

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Section: Introductionmentioning

confidence: 99%

Epitaxially grown sexiphenyl nanocrystals on the organic KAP(010) surface

Haber

Resel

Thierry

et al. 2008

Physica E: Low-dimensional Systems and Nanostructures

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“…It is common that multilayer and monolayer straight steps arrange jumbly while arrays of elementary steps are seldom seen. The orientations of the multilayer steps observed by AFM are usually different from those of elementary ones on the cleavage faces of potassium bichromate crystals [8] and potassium acid phthalate crystals [9]. Here for LAA crystals, multilayer and monolayer steps have the same orientation.…”

Section: Resultsmentioning

confidence: 89%

“…2c illustrates examples of cleavage steps whose figures are V-shaped steps and all the steps are of elementary height. V-shaped were often observed on the cleaved surfaces [8][9][10]. The formation is thought to result from cutting of dislocation loop lying in the slip plane by crack front propagating obliquely to the loop.…”

Section: Resultsmentioning

confidence: 99%

AFM study of surface morphology of {100} cleavage planes of l-arginine acetate crystals

Geng

Xü

Wang

et al. 2005

Journal of Crystal Growth

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“…All these cleavage surfaces are characterized by the presence of phenyl rings arranged in a zig-zag fashion parallel to the shortest and polar lattice vector. 46 The outermost H atoms of the phenyl rings protrude out of the surface and give rise to the aforementioned molecular scale furrows. While periodicity parallel to the hydrogen bond chains is almost constant (increasing by 1.3% and 0.6% on moving from KAP to RbAP and CsAP, respectively), a major lengthening occurs for the orthogonal direction, namely, +4.7% for RbAP and +11.6% for CsAP compared to KAP.…”

Section: Discussionmentioning

confidence: 99%

Epitaxy of oligothiophenes on alkali metal hydrogen phthalates: Simulations and experiments

Trabattoni

Raimondo

Sassella

et al. 2017

The Journal of Chemical Physics

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Three alkali metal hydrogen phthalate salts (denoted as XAP, X = K, Rb, and Cs) are chosen as substrates for the growth of quaterthiophene (4T) and hexathiophene (6T) thin films by organic molecular beam epitaxy to study the influence of gradual changes of surface unit cell parameters on the epitaxialgrowth. The increment of substrate lattice parameters increases the distance between the planes that define the furrows where oligothiophene molecules lie, while keeping unmodified the interactions between the overlayer and the substrate. Atom-atom potential simulations predict the preferential azimuthal orientations of the overlayer, which are compared with those experimentally observed. The agreement between simulations and experiments about contact planes and orientation of the crystalline domains in the films is satisfactory for both 4T/XAP and 6T/XAP. The increasing width of the surface furrows existing on moving from KAP to RbAP and CsAP does not cause any significant variation of the orientation and density of the overlayer domains, demonstrating that the interaction between overlayer and substrate is the key factor guiding organic epitaxialgrowth.

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Study of the orientation and frequency of occurrence of elementary steps on the (010) cleavage face of potassium acid phthalate single crystals

Cited by 18 publications

References 17 publications

Epitaxially grown sexiphenyl nanocrystals on the organic KAP(010) surface

Epitaxially grown sexiphenyl nanocrystals on the organic KAP(010) surface

AFM study of surface morphology of {100} cleavage planes of l-arginine acetate crystals

Epitaxy of oligothiophenes on alkali metal hydrogen phthalates: Simulations and experiments

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