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We have performed a density functional theory study of the possible layered geometries occurring after dehydrogenation of a self-assembled monolayer (SAM) of biphenyl-thiol molecules (BPTs) adsorbed on a Au(111), as it has been…

Mesoscale and Nanoscale Physics · Physics 2011-11-10 Pepa Cabrera-Sanfelix , Andrés Arnau , Daniel Sánchez-Portal

On a gold surface, supramolecules composed of 4-acetylbiphenyl molecules show structural directionality, reproducibility and robustness to external perturbations. We investigate the assembly of those molecules on the Au(111) surface and…

The rapid development of fabrication of functional high-quality graphene-like nanoribbons has increasingly reliant on integration of diverse nanofabrication platforms. The demand for innovative techniques to enable the exploration and…

Mesoscale and Nanoscale Physics · Physics 2025-02-11 Yu Yao , Yu Wang , Shuangxiang Wu , Qiang Zhang , Yifan Wang , Hui Zhang

On-surface metal-organic coordination provides a promising way for synthesizing different two-dimensional lattice structures that have been predicted to possess exotic electronic properties. Using scanning tunneling microscopy (STM) and…

Materials Science · Physics 2019-10-04 Linghao Yan , Ilona Pohjavirta , Benjamin Alldritt , Peter Liljeroth

Macromolecules can form regular structures on inert surfaces. We have developed a combined empirical and modeling approach to derive the bonding. From experimental scanning tunneling microscopy (STM) images of structures formed on Au(111)…

We report on the formation of nitrogen-doped nanographenes containing five- and seven-membered rings by thermally induced cyclodehydrogenation on the Au(111) surface. Using scanning tunneling microscopy and supported by calculations, we…

The formation of hydrogen-bonded organic nano-structures and the role of the substrate lattice thereby were investigated by scanning tunneling microscopy. The self-organization of 5,10,15,20-tetra(p-hydroxyphenyl)porphyrin (H2THPP)…

We report a convergent surface polymerization reaction scheme on Au(111), based on a triple aldol condensation, yielding a carbon-rich, covalent nanoporous two-dimensional network. The reaction is not self-poisoning and proceeds up to a…

We systematically investigated the superstructure evolution of Te atoms on Au(111) substrate at different coverages. As revealed by low temperature scanning tunneling microscopy and spectroscopy, Te atoms form one-dimensional root3…

Mesoscale and Nanoscale Physics · Physics 2024-11-20 Jiaqi Guan , Xiaochun Huang , Shuyuan Zhang , Xun Jia , Xuetao Zhu , Weihua Wang , Jiandong Guo

We investigate the atomic and electronic structure of a single layer of pentacene on the Au(111) surface using density functional theory. To find the candidate structures we strain match the pentacene crystal geometry with the Au(111)…

Materials Science · Physics 2013-08-06 Kurt Stokbro , Søren Smidstrup

The self-assembly of pyridyl-functionalized triazine (T4PT) was studied on Au(111) using low-temperature scanning tunneling microscopy (STM) under ultra-high vacuum conditions combined with density functional theory (DFT) calculations. In…

The morphology and electronic structure of pentacene (Pn) deposited on Cu(111) was studied using scanning tunneling microscopy (STM) and spectroscopy (STS). Deposition of a multilayer followed by annealing to reduce coverage to a monolayer…

Mesoscale and Nanoscale Physics · Physics 2011-10-24 Joseph Smerdon , Matthias Bode , Nathan Guisinger , Jeffrey Guest

Non-planar aromatic molecules are interesting systems for organic electronics and optoelectronics applications due to their high stability and electronic properties. By using scanning tunneling microscopy and spectroscopy, we investigated…

We demonstrate the self-assembly of C$_{60}$ and pentacene (Pn) molecules into acceptor-donor heterostructures which are well-ordered and -- despite the high degree of symmetry of the constituent molecules -- {\it chiral}. Pn was deposited…

Mesoscale and Nanoscale Physics · Physics 2013-09-03 Joseph A. Smerdon , Rees B. Rankin , Jeffrey Greeley , Nathan Guisinger , Jeffrey Guest

The structural profiles and electronic properties of pentacene (C$_{22}$H$_{14}$) multilayers on Ag(111) surface has been studied within the density functional theory (DFT) framework. We have performed first-principle total energy…

Materials Science · Physics 2011-01-06 Ersen Mete , Ilker Demiroglu , M. Fatih Danisman , Sinasi Ellialtioglu

We investigate the temperature-dependent deposition of nickelocene (NiCp$_2$) molecules on a single crystal Au(111) substrate, revealing distinct adsorption behaviors and structural formations. At low temperatures (4.2 K), individual…

Mesoscale and Nanoscale Physics · Physics 2025-04-22 Divya Jyoti , Alex Fétida , Laurent Limot , Roberto Robles , Nicolás Lorente , Deung-Jang Choi

Triangulenes are open-shell triangular graphene flakes with total spin increasing with their size. In the last years, on-surface-synthesis strategies have permitted fabricating and engineering triangulenes of various sizes and structures…

DNA nanoparticles with three-fold coordination have been observed to self-assemble in experiment into a network equivalent to the hexagonal (6.6.6) tiling, and a network equivalent to the 4.8.8 Archimedean tiling. Both networks are built…

Statistical Mechanics · Physics 2018-05-28 Zdenek Preisler , Barbara Sacca , Stephen Whitelam

N-Heteropolycyclic aromatic compounds are promising organic electron-transporting semiconductors for applications in field effect transistors. Here, we investigated the electronic properties of 1,3,8,10-tetraazaperopyrene derivatives…

Triangulene nanographenes are open-shell molecules with predicted high spin state due to the frustration of their conjugated network. Their long-sought synthesis became recently possible over a metal surface. Here, we present a macrocycle…

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