Engineering two-dimensional hybrid NaCl–organic coordinated nanoarchitectures on metal surfaces

Hieulle, Jérémy; Peyrot, David; Jiang, Zhaotan; Silly, Fabien

doi:10.1039/c5cc01892g

Cited by 25 publications

(32 citation statements)

References 41 publications

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“…In the conditions used in this study, the disordered areas are found to strongly dominate the geometry of the electron irradiated films. Further investigations are necessary to control the ratio between the disordered and ordered areas, before electron irradiated alkali-halide ultrathin films can eventually be used as "templates" for anchoring single organic molecules or producing macromolecular structures on a surface [58][59][60][61][62].…”

Section: Discussionmentioning

confidence: 99%

Reaction kinetics of ultrathin NaCl films on Ag(001) upon electron irradiation

et al. 2017

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We report on an electron-induced modification of alkali halides in the ultrathin film regime. The reaction kinetics and products of the modifications are investigated in the case of NaCl films grown on Ag(001). Their structural and chemical modification upon irradiation with electrons of energy 52-60 eV and 3 keV is studied using low-energy electron diffraction (LEED) and Auger electron spectroscopy (AES), respectively. The irradiation effects on the film geometry and thickness (ranging from between two and five atomic layers) are examined using scanning tunneling microscopy (STM). We observe that Cl depletion follows different reaction kinetics, as compared to previous studies on NaCl thick films and bulk crystals. Na atoms produced from NaCl dissociation diffuse to bare areas of the Ag(001) surface, where they form Na-Ag superstructures that are known for the Na/Ag(001) system. The modification of the film is shown to proceed through two processes, which are interpreted as a fast disordering of the film with removal of NaCl from the island edges and a slow decrease of the structural order in the NaCl with formation of holes due to Cl depletion. The kinetics of the Na-Ag superstructure growth is explained by the limited diffusion on the irradiated surface, due to aggregation of disordered NaCl molecules at the substrate step edges.

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Section: Discussionmentioning

confidence: 99%

Reaction kinetics of ultrathin NaCl films on Ag(001) upon electron irradiation

et al. 2017

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“…7,8 In particular, alkali metals have unique functions when binding with organic ligands. [9][10][11][12][13][14][15][16][17][18] The low ionization energy of alkali metals introduces a longrange electrostatic interaction, which can be employed to steer ionic self-assembly with organic ligands. [19][20][21] The resulting structures present large-scale ordering and high thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Fine-tuning of two-dimensional metal–organic nanostructures via alkali–pyridyl coordination

et al. 2020

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“…We did not nd any tunneling conditions that allow imaging intermolecular details using a clean PtIr tip, as it can be seen in the additional STM images presented in ref. 48. Fig.…”

Section: Enhanced Stm Contrast In Nacl-ptcdi Nanoarchitecture Imagingmentioning

confidence: 99%

“…Fig. 4 shows STM images of the NaCl-PTCDI "mesh"-nanoarchitecture on Au(111) 48 recorded using a clean and sharp PtIr tip. This structure is formed aer depositing PTCDI and NaCl on Au(111) and the surface post-annealed at 100 C. The PTDI molecules appear as capsules and NaCl dimers as bright spots, independently of the selected tunneling bias.…”

Section: Enhanced Stm Contrast In Nacl-ptcdi Nanoarchitecture Imagingmentioning

confidence: 99%

“…In this paper we investigate the contrast enhancement in the STM images of organic and hybrid nanoarchitectures on metal surfaces at room temperature induced by a NaCl-functionalized STM tip. Archetypal 2D model systems (PTCDI molecules 47 and PTCDI-NaCl nanoarchitectures 48 ) are selected as a benchmarks to assess the enhanced resolution of the NaCl-functionalized STM tip in comparison with a non-functionalised PtIr STM tip. STM data reveal that new electronic features appear at room temperature in the STM images recorded with the NaClfunctionalized STM tip.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing intramolecular features and identifying defects in organic and hybrid nanoarchitectures on a metal surface at room temperature using a NaCl-functionalized scanning tunneling microscopy tip

Peyrot

Silly

2017

RSC Adv.

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International audienceScanning tunneling microscopy (STM) is a powerful method to characterize two-dimensional organic structures and their local electronic properties. Intermolecular features are usually routinely revealed using STM at very low temperature. The resolution of STM images recorded at room temperature is in comparison quite limited. We investigate here the morphology and local electronic properties of organic and hybrid nanoarchitectures laying on metal surface at room temperature using STM with a classical PtIr tip and a novel NaCl-functionalised tip. STM images show that the NaCl-functionalized tip allows revealing at room temperature intermolecular features and variation of molecular local electronic properties, that are not visible using a PtIr tip. This new method opens new opportunities for characterizing and assessing at the atomic scale the morphology and electronic properties of organic nanoarchitectures on highly conductive surfaces not only at room temperature but also at low temperature

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Engineering two-dimensional hybrid NaCl–organic coordinated nanoarchitectures on metal surfaces

Cited by 25 publications

References 41 publications

Reaction kinetics of ultrathin NaCl films on Ag(001) upon electron irradiation

Reaction kinetics of ultrathin NaCl films on Ag(001) upon electron irradiation

Fine-tuning of two-dimensional metal–organic nanostructures via alkali–pyridyl coordination

Enhancing intramolecular features and identifying defects in organic and hybrid nanoarchitectures on a metal surface at room temperature using a NaCl-functionalized scanning tunneling microscopy tip

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