Effect of local environment on nanoscale dynamics at electrochemical interfaces: Anisotropic growth and dissolution in the presence of a step providing evidence for a Schwoebel–Ehrlich barrier at solid/liquid interfaces

He, Yufan; Borguet, Eric

doi:10.1039/b110802f

Cited by 21 publications

(19 citation statements)

References 40 publications

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“…For example, the reduction of pre-adsorbed oxidized TPyP can be very slow, taking as long as tens of minutes at À0.05 V. However, the oxidation of adsorbed TPyP at 0.2 V is much faster, occurring in seconds. (The potential for the onset of oxidation of adsorbed TPyP is about 0.1 V.) [13] In the experiment (Figure 1), [14,15] the sample, an adsorbed monolayer of TPyP on Au(111) without TPyP molecules in the 0.1m H 2 SO 4 solution, was initially held at a potential (E 1 = À0.1 V) where all the TPyP molecules were reduced. [13] A short oxidation potential pulse (E 2 , for duration t) was applied to the sample during STM imaging.…”

Section: Yufan He and Eric Borguet*mentioning

confidence: 99%

Dynamics of Porphyrin Electron‐Transfer Reactions at the Electrode–Electrolyte Interface at the Molecular Level

Borguet

2007

Angew Chem Int Ed

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Section: Yufan He and Eric Borguet*mentioning

confidence: 99%

Dynamics of Porphyrin Electron‐Transfer Reactions at the Electrode–Electrolyte Interface at the Molecular Level

Borguet

2007

Angew Chem Int Ed

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“…In the experiment (Figure 1),14, 15 the sample, an adsorbed monolayer of TPyP on Au(111) without TPyP molecules in the 0.1 M H 2 SO 4 solution, was initially held at a potential ( E 1 =−0.1 V) where all the TPyP molecules were reduced 13. A short oxidation potential pulse ( E 2 , for duration τ ) was applied to the sample during STM imaging.…”

Section: Methodsmentioning

confidence: 99%

Tubular or Subsurface Morphology of Octabutoxyphthalocyanine upon Self‐Assembly in Polymer Matrices: Effect of the Casting Solvent

Islam

Sundararajan

2011

Chemistry A European J

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Spontaneous phase-separated, controlled aggregate structures of photo- and electroactive molecules in polymer matrices are of interest for device fabrication. We show that the self-assembly of octabutoxyphthalocyanine (Pc) in polymer matrices leads to tubular morphology of Pc when the film is prepared with tetrachloroethane (TCE) and subsurface droplet morphology with chloroform. The same morphology is seen with both bisphenol A polycarbonate (BPAPC) and poly(methyl methacrylate) (PMMA) as the matrix. The subsurface morphology results from the rapid association of Pc in the polymer matrix, as the film forms. With the tubular morphology in the films prepared with TCE, percolation threshold is reached with a concentration of Pc as low as 3% (wt) in the polymer. Such phase-separated self-assembly occurs, without any annealing of the films. Even in the absence of the polymer, Pc crystallized from TCE also shows tubular morphology, whereas it exhibits a columnar morphology with chloroform. X-ray diffraction of Pc crystallized from either solvent shows the columnar stacking of the Pc molecules. However, the morphology is tubular when TCE is used. We attribute the difference in the morphology to the higher viscosity of TCE and the diffusion-limited growth, which causes the tubular morphology, whereas the instantaneous self-assembly in less-viscous chloroform leads to droplets. The solvent effect observed here could be used to tailor the morphology of such photoconductive molecules in polymer matrices.

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“…Wang and Ehrlich have reported finding in their experiments on Ir/Ir(111) a "denuded zone", an area around nano-islands devoid of adsorbates [90,98], an observation later made for a number of different systems by other groups (see, e. g. Refs. [99,100]). Tsivlin and coworkers [44] have demonstrated theoretically that even a weak corrugation of the substrate can strongly influence diffusion of single adatoms.…”

Section: Adsorption Diffusion On and Near Mesoscopic Islandsmentioning

confidence: 96%

Effect of mesoscopic misfit on growth, morphology, electronic properties and magnetism of nanostructures at metallic surfaces

Brovko

Бажанов

Meyerheim

et al. 2014

Surface Science Reports

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Stress and strain originating from mesoscopic misfit at interfaces can have diverse effects on the properties of surfaces and nanostructures thereon. We review the sources and consequences of mesoscopic misfit at metallic surfaces and elucidate various ways in which it affects growth, morphology, electronic properties and magnetism of thin films in early stages of epitaxy and epitaxial nanostructures.

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Effect of local environment on nanoscale dynamics at electrochemical interfaces: Anisotropic growth and dissolution in the presence of a step providing evidence for a Schwoebel–Ehrlich barrier at solid/liquid interfaces

Cited by 21 publications

References 40 publications

Dynamics of Porphyrin Electron‐Transfer Reactions at the Electrode–Electrolyte Interface at the Molecular Level

Dynamics of Porphyrin Electron‐Transfer Reactions at the Electrode–Electrolyte Interface at the Molecular Level

Tubular or Subsurface Morphology of Octabutoxyphthalocyanine upon Self‐Assembly in Polymer Matrices: Effect of the Casting Solvent

Effect of mesoscopic misfit on growth, morphology, electronic properties and magnetism of nanostructures at metallic surfaces

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