Large-extended 2D supramolecular network of dipoles with parallel arrangement on a Si(111)–B surface

Custovic, Irma; Teyssieux, Damien; Jeannoutot, Judicaël; Lamare, Simon; Palmino, Frank; Abbasian, Hamed; Rochefort, Alain; Cherioux, Frédéric

doi:10.1039/d0nr03372c

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…A typical large-scale STM image recorded at 110 K is shown in Figure b (corresponding zoomed-in image in Figure S2). As we previously demonstrated, ,, this image corresponds to the formation of a supramolecular network of PDB-OC10 molecules, as illustrated in the model in Figure c. This supramolecular network is stabilized by molecule–molecule interactions, mostly due to interdigitation of C 10 alkyl chains of two PDB-OC10 molecules involved in two adjacent lines and by molecule–surface interactions, mostly due to the N–Si adatom interactions.…”

Section: Resultssupporting

confidence: 57%

Activation, Transportation, and Reaction of Alkyl Radicals on a Si(111)-B Surface by a Scanning Tunneling Microscope Tip

et al. 2023

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On-surface chemistry is a powerful method to fabricate organic nanostructures with high precision onto different kinds of surfaces. On more inert surfaces, the lack of reactivity of the underlying substrate can be circumvented by using the electrons from a scanning tunneling microscope (STM) tip, as a stimulus, to produce the reactants of a targeted reaction. Here, another role of the STM tip is exploited in the fabrication of organic nanostructures. The STM tip is first used as a source of stimulating electrons to generate organic radicals on a Si(111)√3x√3R30°-B surface. Then, the STM tip acts as a conveyor to transfer radicals among different interfaces, for finally creating new hybrid organic−inorganic interfaces. Our approach enables new alternatives to initiate, control, and provide radicals into oligomerization reactions with tunneling electrons and to fabricate nanostructures with a molecular precision.

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Section: Resultssupporting

confidence: 57%

Activation, Transportation, and Reaction of Alkyl Radicals on a Si(111)-B Surface by a Scanning Tunneling Microscope Tip

et al. 2023

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Comparison of 2D crystals formed by dissociative adsorption of fluorinated and nonfluorinated alkyl iodides on Cu(111)

Balema

Larson

Wang

et al. 2021

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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We report the comparison of a series of 2D molecular crystals formed from the intermediates of the dehalogenation reaction of iodoethane versus various fluorinated iodoalkanes on Cu(111). High-resolution scanning tunneling microscopy enables us to distinguish the alkyl groups from the iodine atoms, and we find that the ethyl groups and iodine atoms formed from the dissociation of ethyl iodide are well mixed. However, fluorination of the alkyl tail changes this behavior and leads to local segregation of the two species on the surface. We postulate that the low-polarizability and relatively large dipole moment of the fluorinated species drive the ordered assemblies of the fluorinated alkyl species on the surface and discuss this in the context of how solvophobicity can drive the clustering of fluorinated groups and, hence, phase separation.

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Large-extended 2D supramolecular network of dipoles with parallel arrangement on a Si(111)–B surface

Abstract: We have investigated the self-assembly of a strong dipolar molecule (LDipCC) on the semiconducting Si(111)-B surface with scanning tunneling microscopy (STM), density functional theory (DFT) calculations and STM simulations. Although...

Cited by 2 publications

References 33 publications

Activation, Transportation, and Reaction of Alkyl Radicals on a Si(111)-B Surface by a Scanning Tunneling Microscope Tip

Activation, Transportation, and Reaction of Alkyl Radicals on a Si(111)-B Surface by a Scanning Tunneling Microscope Tip

Comparison of 2D crystals formed by dissociative adsorption of fluorinated and nonfluorinated alkyl iodides on Cu(111)

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