Energy Dissipation from Confined States in Nanoporous Molecular Networks

D’Astolfo, Philipp; Wang, Xing; Liu, Xunshan; Kisiel, Marcin; Drechsel, Carl; Baratoff, A.; Decurtins, Silvio; Liu, Shixia; Pawlak, Rémy; Meyer, Ernst

doi:10.1021/acsnano.2c05333

Cited by 2 publications

(1 citation statement)

References 48 publications

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“…However, assembly by tip manipulation is inherently hardly scalable; therefore, attention has been given to applying on-surface supramolecular principles, demonstrating the formation of large-scale artificial lattices and quantum dot (QD) arrays of various periodicities, symmetries, and shapes. − …”

Section: Introductionmentioning

confidence: 99%

Formation of an Extended Quantum Dot Array Driven and Autoprotected by an Atom-Thick h-BN Layer

et al. 2023

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Engineering quantum phenomena of two-dimensional nearly free electron states has been at the forefront of nanoscience studies ever since the first creation of a quantum corral. Common strategies to fabricate confining nanoarchitectures rely on manipulation or on applying supramolecular chemistry principles. The resulting nanostructures do not protect the engineered electronic states against external influences, hampering the potential for future applications. These restrictions could be overcome by passivating the nanostructures with a chemically inert layer. To this end we report a scalable segregation-based growth approach forming extended quasi-hexagonal nanoporous CuS networks on Cu(111) whose assembly is driven by an autoprotecting h-BN overlayer. We further demonstrate that by this architecture both the Cu(111) surface state and image potential states of the h-BN/CuS heterostructure are confined within the nanopores, effectively forming an extended array of quantum dots. Semiempirical electron-plane-wave-expansion simulations shed light on the scattering potential landscape responsible for the modulation of the electronic properties. The protective properties of the h-BN capping are tested under various conditions, representing an important step toward the realization of robust surface state based electronic devices.

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Section: Introductionmentioning

confidence: 99%

Formation of an Extended Quantum Dot Array Driven and Autoprotected by an Atom-Thick h-BN Layer

et al. 2023

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On‐Surface Synthesis of Two‐Dimensional Carbon‐Based Networks via Hierarchical Ullmann Coupling Reactions

Qin,

Liang,

et al. 2024

ChemPhysChem

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The recent developed bottom‐up on‐surface synthesis offers unprecedent opportunities for the fabrication of two‐dimensional (2D) carbon‐based networks with atomic precision. Hierarchical coupling approach has been proposed as an efficient strategy for improving the corresponding reaction selectivity and quality of target structures. Herein, we report the synthesis of a nitrogen‐doped carbon‐based network on Ag(100) utilizing a hierarchical Ullmann coupling strategy. The accurate identification of reaction intermediates and products by scanning tunneling microscopy allows us to unravel the reaction mechanism. The synthetic process of 2D carbon‐based networks is kinetics‐driven, relying on the competition between dechlorination and C−C coupling. We expect that our discussion on the mechanism of hierarchical coupling may shed light on the rational design and precise synthesis of 2D carbon‐based networks on surfaces.

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Energy Dissipation from Confined States in Nanoporous Molecular Networks

Cited by 2 publications

References 48 publications

Formation of an Extended Quantum Dot Array Driven and Autoprotected by an Atom-Thick h-BN Layer

Formation of an Extended Quantum Dot Array Driven and Autoprotected by an Atom-Thick h-BN Layer

On‐Surface Synthesis of Two‐Dimensional Carbon‐Based Networks via Hierarchical Ullmann Coupling Reactions

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