Computer simulations of underwater oil adhesion of self-assembled monolayers on Au (111)
Computer simulations of underwater oil adhesion of self-assembled monolayers on Au (111)
复制标题
Au(111)上自组装单层膜水下油粘附的计算机模拟
DOI:
10.1080/08927022.2018.1498974
复制
发表时间:
2018-07
影响因子:
2.1
通讯作者:
Zhou Jian
中科院分区:
文献类型:
--
作者:
Liao Mingrui;Li Yingtu;Chen Zheng;Zhou Jian
ABSTRACT Molecular dynamics and steered molecular dynamics (SMD) simulations are used to investigate the underwater adhesive forces of 1, 2-dichloroethane (DCE) on ionic and non-ionic self-assembled monolayers (SAMs) grafted on Au (111). The non-ionic SAMs containing hydroxyl group include ethanolamine-terminated SAM (ETA-SAM), dopamine-terminated SAM (DOPA-SAM), hydroxyl-terminated SAM (OH-SAM) and oligo(ethylene glycol)-terminated SAM (OEG-SAM); the ionic SAMs contain mixed-charged zwitterionic SAM and zwitterionic phosphorylcholine-terminated SAM . Simulation results show that the order of underwater oleophobicity of SAMs is OEG-SAM < ETA-SAM < OH-SAM < DOPA-SAM < < , while the order of underwater DCE oil droplet adhesion forces on different SAMs is < < ETA-SAM < DOPA-SAM < OH-SAM < OEG-SAM. The ionic SAMs show stronger underwater oleophobicity and lower oil adhesion than non-ionic SAMs. Generally, a more underwater oleophobic surface is less adhesive. The underwater oil droplet desorption behaviours on ionic and non-ionic SAMs are also different. With the oil droplet being pulled away from ionic SAMs, the oil contact lines gradually shortened and disappeared finally; whereas the oil contact lines on non-ionic SAMs almost kept an initial state even the main part of oil droplet separated from the SAMs. This work systematically proved that a zwitterionic surface was less underwater oil adhesive than a non-ionic surface and provided a new insight for their oil desorption behaviours. The above results will be helpful for the design of underwater oleophobic surfaces with tuneable adhesion.
登录
查看更多内容
影响因子:
5.5
作者:
Hess, Berk;Kutzner, Carsten;Lindahl, Erik
通讯作者:
Lindahl, Erik
影响因子:
3.9
作者:
Cheng, Gang;Liao, Mingrui;Zhou, Jian
通讯作者:
Zhou, Jian
影响因子:
3.9
作者:
Hoefling, Martin;Iori, Francesco;Gottschalk, Kay-Eberhard
通讯作者:
Gottschalk, Kay-Eberhard
DOI:
10.1063/1.2337629
发表时间:
2006-09
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Jian Zhou;Luzheng Zhang;Y. Leng;H. Tsao;Yu-Jane Sheng;Shaoyi Jiang
通讯作者:
Jian Zhou;Luzheng Zhang;Y. Leng;H. Tsao;Yu-Jane Sheng;Shaoyi Jiang
影响因子:
2.1
作者:
Janssen, Dimitri;De Palma, Randy;Dehaen, Wim
通讯作者:
Dehaen, Wim