THEORETICAL STUDY ON ADSORBATE-INDUCED SURFACE STRESS IN THE SELF-ASSEMBLY OF ALKANETHIOLS ON GOLD

2009 ◽  
Vol 16 (06) ◽  
pp. 807-814
Author(s):  
RONG XIE
Keyword(s):  
Self Assembly ◽  
Surface Stress ◽  
Theoretical Study ◽  
Alkyl Chain ◽  
Thermodynamic Theory ◽  
The Self ◽  
Statistical Thermodynamic ◽  
Interaction Energies ◽  
Adsorption Monolayer ◽  
Theory And Experiment

By using established statistical thermodynamic theory of adsorbate-induced surface stress of adsorption monolayer on metal surface, the surface stress Δg in the self-assembly of alkanethiols on Au (111) surface has been calculated. The quantitative relations of the surface stress Δg with the length N of the alkyl chain of the molecule and with the coverage θ of molecules on Au (111) have been theoretically studied, respectively. The calculated results agree with Berger et al.'s experiment. The qualitative discrepancy between the theory and experiment on the sign of the surface stress has been resolved. Among various components of the adsorbate–adsorbate interaction energies in the adlayer, the substrate-mediated interaction is significant for the adsorbate-induced surface stress, which shows that indirect contribution of the adsorption energy of alkanethiols through the substrate-mediated interaction is very important.

scholarly journals Optimizing Component–Component Interaction Energies in the Self-Assembly of Finite, Multicomponent Structures

ACS Omega ◽  
2018 ◽  
Vol 3 (12) ◽  
pp. 18753-18761
Author(s):  
John Zenk ◽  
Matthew Billups ◽  
Rebecca Schulman
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Interaction Energies ◽  
Component Interaction

Chiral Expression at the Solid−Liquid Interface: A Joint Experimental and Theoretical Study of the Self-Assembly of Chiral Porphyrins on Graphite

Langmuir ◽  
2008 ◽  
Vol 24 (17) ◽  
pp. 9566-9574 ◽  
Author(s):  
Mathieu Linares ◽  
Patrizia Iavicoli ◽  
Krystallia Psychogyiopoulou ◽  
David Beljonne ◽  
Steven De Feyter ◽  
...  
Keyword(s):  
Self Assembly ◽  
Theoretical Study ◽  
Liquid Interface ◽  
The Self ◽  
Solid Liquid Interface ◽  
Solid Liquid

scholarly journals Interaction Patterns for Staggered Assembly of Fibrils from Semiflexible Chains

Symmetry ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 1926
Author(s):  
Arnoud Jongeling ◽  
Carsten Svaneborg ◽  
Renko de Vries
Keyword(s):  
Interaction Energy ◽  
Self Assembly ◽  
Compact Objects ◽  
The Self ◽  
Interaction Patterns ◽  
Interaction Energies ◽  
Colloidal Interactions ◽  
Dynamics Simulations ◽  
Positively Charged ◽  
Simple Interaction

The design of colloidal interactions to achieve target self-assembled structures has especially been done for compact objects such as spheres with isotropic interaction potentials, patchy spheres and other compact objects with patchy interactions. Inspired by the self-assembly of collagen-I fibrils and intermediate filaments, we here consider the design of interaction patterns on semiflexible chains that could drive their staggered assembly into regular (para)crystalline fibrils. We consider semiflexible chains composed of a finite number of types of interaction beads (uncharged hydrophilic, hydrophobic, positively charged and negatively charged) and optimize the sequence of these interaction beads with respect to the interaction energy of the semiflexible chains in a number of target-staggered crystalline packings. We find that structures with the lowest interaction energies, that form simple lattices, also have low values of L/D (where L is chain length and D is stagger). In the low interaction energy sequences, similar types of interaction beads cluster together to form stretches. Langevin Dynamics simulations confirm that semiflexible chains with optimal sequences self-assemble into the designed staggered (para)crystalline fibrils. We conclude that very simple interaction patterns should suffice to drive the assembly of long semiflexible chains into staggered (para)crystalline fibrils.

scholarly journals Self-assembly of fluoride-encapsulated polyhedral oligomeric silsesquioxane (POSS) nanocrystals

CrystEngComm ◽  
2019 ◽  
Vol 21 (4) ◽  
pp. 710-723 ◽  
Author(s):  
Ellen Heeley ◽  
Youssef El Aziz ◽  
Christopher Ellingford ◽  
Albina Jetybayeva ◽  
Chaoying Wan ◽  
...  
Keyword(s):  
Self Assembly ◽  
Alkyl Chain ◽  
Crystal Packing ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
The Self ◽  
Fluoride Ion ◽  
Electron Withdrawing Group ◽  
Oligomeric Silsesquioxane

The self-assembly and crystal packing of a unique series of nanocrystalline fluoride ion-encapsulated polyhedral oligomeric silsesquioxane (F-POSS) compounds, with substituted electron-withdrawing group (EWG) perfluorinated alkyl chain arms of varying lengths, were investigated.

scholarly journals A thermodynamic theory of the self-assembly of quantum dots

2008 ◽  
Vol 10 (4) ◽  
pp. 043007 ◽  
Author(s):  
X L Li ◽  
G Ouyang ◽  
G W Yang
Keyword(s):  
Quantum Dots ◽  
Self Assembly ◽  
Thermodynamic Theory ◽  
The Self

Preparation of Azobenzenealkanethiols for Self-Assembled Monolayers with Photoswitchable Properties

2010 ◽  
Vol 63 (2) ◽  
pp. 303 ◽  
Author(s):  
Simone Krakert ◽  
Andreas Terfort
Keyword(s):  
Oxygen Atom ◽  
Hybrid Systems ◽  
Self Assembly ◽  
Alkyl Chain ◽  
The Self ◽  
Self Assembled Monolayers ◽  
Assembled Monolayers ◽  
Methylene Groups ◽  
Broad Variety ◽  
Fast Access

A series of azobenzenealkanethiol compounds with the structure p-RC6H4N=NC6H4(CH2)nSH (n = 3, 4) was synthesized using a divergent strategy with the two anilines H2NC6H4(CH2)nSAc as central compounds. This strategy provides fast access to a broad variety of the respective azobenzenethiols without (note!) an oxygen atom in the alkyl chain, thus permitting the self-assembly of these compounds onto gold in a predictable conformation, also taking advantage of the previously found odd–even effect in aromatic–aliphatic hybrid systems. Initial experiments indicate that all of these molecules indeed form dense monolayers, in which the orientation of the azobenzene unit is determined by the number of methylene groups in the aliphatic part of the molecules.

Surface Stress in the Self-Assembly of Alkanethiols on Gold

Science ◽  
1997 ◽  
Vol 276 (5321) ◽  
pp. 2021-2024 ◽  
Author(s):  
R. Berger
Keyword(s):  
Self Assembly ◽  
Surface Stress ◽  
The Self
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