gold adatoms
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2021 ◽  
pp. 129675
Author(s):  
Alma L. Marcos-Viquez ◽  
Álvaro Miranda ◽  
Miguel Cruz-Irisson ◽  
Luis A. Pérez


Nano Research ◽  
2020 ◽  
Vol 14 (3) ◽  
pp. 887-892
Author(s):  
Nan Si ◽  
Tao Shen ◽  
Xinyi Liu ◽  
Dechun Zhou ◽  
Qingmin Ji ◽  
...  


ACS Nano ◽  
2020 ◽  
Vol 14 (7) ◽  
pp. 8689-8696 ◽  
Author(s):  
David-Benjamin Grys ◽  
Bart de Nijs ◽  
Andrew R. Salmon ◽  
Junyang Huang ◽  
Wenting Wang ◽  
...  


2020 ◽  
Author(s):  
Mithun Ghosh ◽  
Ding-Shyue Yang

<div>TThe structures of long-chain alkanethiols (C<sub>18</sub>H<sub>37</sub>SH) chemisorbed on an Au(111) single crystal were investigated using reflection high-energy electron diffraction (RHEED). The primary (√3x√3)R30° structure observed as a major species in the as-deposited films contains gold adatoms below the sulfur headgroups. Between the small ordered domains with the alkyl chains tilting toward six directions are azimuthally disorderly packed regions, with a similar average tilt of 30.2°. In contrast, a significant reduction in the coverage of gold adatoms is found in the thermally-induced (2√3x3)<sub>rect</sub> phase. This superlattice is shown to contain a mixture of two sulfur arrangements, both of which exhibit a small S‒S distance, and the pairing of the aliphatic chains. A microscopic picture is then given for the structural transition. These findings demonstrate how the RHEED technique may be used to resolve structures of nanometer-thick thin films with multiple orders at the interfaces.</div>



2020 ◽  
Author(s):  
Mithun Ghosh ◽  
Ding-Shyue Yang

<div>TThe structures of long-chain alkanethiols (C<sub>18</sub>H<sub>37</sub>SH) chemisorbed on an Au(111) single crystal were investigated using reflection high-energy electron diffraction (RHEED). The primary (√3x√3)R30° structure observed as a major species in the as-deposited films contains gold adatoms below the sulfur headgroups. Between the small ordered domains with the alkyl chains tilting toward six directions are azimuthally disorderly packed regions, with a similar average tilt of 30.2°. In contrast, a significant reduction in the coverage of gold adatoms is found in the thermally-induced (2√3x3)<sub>rect</sub> phase. This superlattice is shown to contain a mixture of two sulfur arrangements, both of which exhibit a small S‒S distance, and the pairing of the aliphatic chains. A microscopic picture is then given for the structural transition. These findings demonstrate how the RHEED technique may be used to resolve structures of nanometer-thick thin films with multiple orders at the interfaces.</div>



2020 ◽  
Vol 22 (27) ◽  
pp. 15208-15213
Author(s):  
Roberto Robles ◽  
Vladimír Zobač ◽  
Kwan Ho Au Yeung ◽  
Francesca Moresco ◽  
Christian Joachim ◽  
...  

On a gold surface, supramolecules composed of 4-acetylbiphenyl molecules show structural directionality, reproducibility and robustness to external perturbations, with gold adatoms serving as stabilizing agents.



2020 ◽  
Vol 2 (7) ◽  
pp. 2986-2991
Author(s):  
Dipayan Sen ◽  
Piotr Błoński ◽  
Bruno de la Torre ◽  
Pavel Jelínek ◽  
Michal Otyepka

We investigated chemical transformations of a fluorinated free-base porphyrin, 5,10,15,20-tetrakis(4-fluorophenyl)-21,23H-porphyrin under a Au(111) surface confinement and including gold adatoms by using an experiment and DFT calculations.



2019 ◽  
Vol 123 (26) ◽  
pp. 16281-16287
Author(s):  
Xinbang Liu ◽  
Yongping Du ◽  
Alexander Timmer ◽  
Harry Mönig ◽  
Xinling Wan ◽  
...  
Keyword(s):  


2019 ◽  
Vol 3 (7) ◽  
pp. 1406-1410
Author(s):  
Zhongping Wang ◽  
Xiaoqing Liu ◽  
Yan Lu ◽  
Zegao Wang ◽  
Christian Bortolini ◽  
...  
Keyword(s):  

Au–(dibenzo[fg,op]tetracene) porphyrazine has been synthesized on an Au(111) surface by using the precursor of dibenzo[fg,op]tetracene-5,6,12,13-tetracarbonitrile via cyclization of cyanogroups with Au adatoms.



Nanoscale ◽  
2019 ◽  
Vol 11 (41) ◽  
pp. 19341-19351 ◽  
Author(s):  
Pilar Carro ◽  
Roberto C. Salvarezza

Sulfur adsorption on Au(111) at high coverage has been studied by density functional calculations.



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