scholarly journals Force-Field Simulations of a Hydrated Lanreotide-Based Derivative: Hydration, Dynamics, and Numerical Evidence of Self-Assembly in Dimers

ACS Omega ◽  
2020 ◽  
Vol 5 (39) ◽  
pp. 25423-25431
Author(s):  
Florian Pinzan ◽  
Franck Artzner ◽  
Aziz Ghoufi
2012 ◽  
Vol 562-564 ◽  
pp. 123-128 ◽  
Author(s):  
Bo Du ◽  
Zi Lu Wang ◽  
Xue Hao He

A coarse-grained force field for poly (methylmethacrylate-b-2-vinyl pyridine) is developed based on the Iterative Boltzmann Inversion method. The proposed coarse-grained model, successfully reproduced the properties of the polymer melts obtained from atomistic simulations, may provide an efficient way to study their mechanical properties and self-assembly behaviors.


2007 ◽  
Vol 127 (11) ◽  
pp. 114102 ◽  
Author(s):  
Elaine R. Chan ◽  
Alberto Striolo ◽  
Clare McCabe ◽  
Peter T. Cummings ◽  
Sharon C. Glotzer

Author(s):  
Adam W Franz ◽  
Svetlana Stoycheva ◽  
Michael Himmelhaus ◽  
Thomas J J Müller

(Oligo)phenothiazinyl thioacetates, synthesized by a one-pot sequence, are electrochemically oxidizable and highly fluorescent. SAMs can be readily formed from thiols prepared by in situ deprotection of the thioacetates in the presence of a gold-coated silicon wafer. Monolayer formation is confirmed by ellipsometry and the results compared to those obtained by force field and DFT calculations.


2021 ◽  
Vol 2108 (1) ◽  
pp. 012085
Author(s):  
Mingjia Fang

Abstract During the past few years, numerous studies have been done in self-assembly. Among most of these studies, Molecular Dynamic Simulation is widely used to construct the experiment model. This work firstly introduced three practical applications of MD simulation in self-assembly. Then, two main kinds of simulation are discussed including all-atom simulation and coarse-grained simulation, together with the way of thoughts before the simulation start. It is found that researchers always start with the whole analysis of the substances that need to be studied. It helps to confirm the appropriate model that can apply in the simulation naturally. Besides, depended on the principles that need to be studied, the way of establishing the simulation system varies, ranging from separation experiment in both types of simulation to the change of essential parameters. Furthermore, the adoption of L-J potential in MD simulation proves to be a wise option on account of its convenient and simple model. It is remarkable that, considering some small details like the differences between implicit and explicit solution, classical Martini force field is replaced by Dry Martini force field.


Author(s):  
Evan Miller ◽  
Matthew Jones ◽  
Michael Henry ◽  
Paul Chery ◽  
Kyle Miller ◽  
...  

We develop an optimized force-field for poly(3-hexylthiophene) (P3HT) and demonstrate its utility for predicting thermodynamic self-assembly. In particular, we consider short oligomer chains, model electrostatics and solvent implicitly, and coarsely model solvent evaporation. We quantify the performance of our model to determine what the optimal system sizes are for exploring self-assembly at combinations of state variables. We perform molecular dynamics simulations to predict the self-assembly of P3HT at ~350 combinations of temperature and solvent quality. Our structural calculations predict that the highest degrees of order are obtained with good solvents just below the melting temperature. We find our model produces the most accurate structural predictions to date, as measured by agreement with grazing incident X-ray scattering experiments.


Author(s):  
Maziar Fayaz-Torshizi ◽  
Erich A. Müller

A methodology is outlined to parametrize coarse grained molecular models for the molecular dynamics simulation of liquid crystals.


Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1305 ◽  
Author(s):  
Evan Miller ◽  
Matthew Jones ◽  
Michael Henry ◽  
Paul Chery ◽  
Kyle Miller ◽  
...  

We develop an optimized force-field for poly(3-hexylthiophene) (P3HT) and demonstrate its utility for predicting thermodynamic self-assembly. In particular, we consider short oligomer chains, model electrostatics and solvent implicitly, and coarsely model solvent evaporation. We quantify the performance of our model to determine what the optimal system sizes are for exploring self-assembly at combinations of state variables. We perform molecular dynamics simulations to predict the self-assembly of P3HT at ∼350 combinations of temperature and solvent quality. Our structural calculations predict that the highest degrees of order are obtained with good solvents just below the melting temperature. We find our model produces the most accurate structural predictions to date, as measured by agreement with grazing incident X-ray scattering experiments.


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