On-surface growth of transition-metal cobalt nanoclusters using a 2D crown-ether array

Yamada, Toyo Kazu; Nemoto, Ryohei; Nishino, Fumi; Hosokai, Takuya; Wang, Chi-Hsien; Horie, Masaki; Hasegawa, Yuri; Kera, Satoshi; Krüger, Peter

doi:10.1039/d3tc03339b

Cited by 2 publications

(1 citation statement)

References 41 publications

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“…This CR ring polymer exhibits significantly greater durability compared to individual molecules, demonstrating stability even at 300 K. Moreover, the crown ring component within the CR polymer possesses the capacity to encapsulate guest atoms, molecules, and ions, presenting vast potential for a diverse array of applications. For instance, incorporating a guest transition-metal atom could yield polymers with enhanced functionality, 56 spanning quantum dot networks, 57–60 spintronics, 61,62 biomedicine, 63,64 drug delivery, 65,66 catalysts, 67–69 and water purification. 70 Furthermore, integrating the host “wheel” BrCR ring molecule with the guest “axel” molecule could result in the formation of nanomolecular machine polymers.…”

Section: Introductionmentioning

confidence: 99%

Designing 2D stripe winding network through crown-ether intermediate Ullmann coupling on Cu(111) surface

Yamada,

Nemoto,

Ishii

et al. 2024

Nanoscale Horiz.

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Section: Introductionmentioning

confidence: 99%

Designing 2D stripe winding network through crown-ether intermediate Ullmann coupling on Cu(111) surface

Yamada,

Nemoto,

Ishii

et al. 2024

Nanoscale Horiz.

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Reversible Sliding Motion by Hole‐Injection in Ammonium‐Linked Ferrocene, Electronically Decoupled from Noble Metal Substrate by Crown‐Ether Template Layer

Nishino,

Krüger,

Wang

et al. 2024

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Artificial molecular machines, especially when based on wheel‐and‐axle complexes, can generate mechanical motions in response to external stimuli. Ferrocene (Fc) is a key component, but it decomposes at 300 K on metal surfaces. Here, a novel method is presented to construct and control the molecular complex composed of ammonium‐linked ferrocene (Fc‐amm) and tetrabrominated crown ether (BrCR) on a Cu(111) surface. Fc‐amm molecules are periodically arranged on a BrCR monolayer film and imaged using scanning tunneling microscopy and spectroscopy. A lateral motion of the Fc groups by ≈0.1 nm is observed for pairs of “edge‐on” Fc‐amm molecules upon hole injection. This sliding motion is reversible and controlled by the applied voltage. Theoretical analysis indicates that the motion is caused by increased Coulomb repulsion of the hole‐doped Fc‐amm+ ions and accompanied by a weakening of CH‐π interactions. These findings open new avenues for developing nanomolecular devices using on‐surface bottom‐up processes.

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On-surface growth of transition-metal cobalt nanoclusters using a 2D crown-ether array

Abstract: We report an on-surface growth of transition-metal nanoclusters using a 2D self-assembled monolayer (SAM) crown ether ring molecular array prepared on Cu(111).

Cited by 2 publications

References 41 publications

Designing 2D stripe winding network through crown-ether intermediate Ullmann coupling on Cu(111) surface

Designing 2D stripe winding network through crown-ether intermediate Ullmann coupling on Cu(111) surface

Reversible Sliding Motion by Hole‐Injection in Ammonium‐Linked Ferrocene, Electronically Decoupled from Noble Metal Substrate by Crown‐Ether Template Layer

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