高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (8): 1729.doi: 10.7503/cjcu20180097

• 物理化学 • 上一篇    下一篇

分子动力学模拟烷烃混合物在石墨烯表面取向

刘艳芳1, 杨华1(), 张辉2   

  1. 1. 天津师范大学化学学院, 天津市功能分子结构与性能重点实验室,无机-有机杂化功能材料化学教育部重点实验室, 天津 300387
    2. 工程电介质及其应用教育部重点实验室, 哈尔滨理工大学化学与环境工程学院, 哈尔滨 150080
  • 收稿日期:2018-02-02 出版日期:2018-08-10 发布日期:2018-06-04
  • 作者简介:联系人简介: 杨 华, 男, 博士, 教授, 主要从事复杂体系的计算机模拟研究. E-mail: yanghua11111@hotmail.com
  • 基金资助:
    国家自然科学基金(批准号: 20803052)资助.

Molecular Dynamics Simulation on the Orientation of Alkane Mixture on Graphene

LIU Yanfang1, YANG Hua1,*(), ZHANG Hui2   

  1. 1. Tianjin Key Laboratory of Structure and Performance for Functional Molecules,Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education,College of Chemistry, Tianjin Normal University, Tianjin 300387, China
    2. Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education,College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150080, China
  • Received:2018-02-02 Online:2018-08-10 Published:2018-06-04
  • Contact: YANG Hua E-mail:yanghua11111@hotmail.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.20803052).

摘要:

采用分子动力学模拟方法研究了烷烃混合物在石墨烯表面取向的过程. 研究结果表明, 模拟温度能够改变链取向的方向, 相对较低的温度对链垂直表面取向有利, 相对较高的温度对链平行于表面取向有利; 温度升高短链烷烃会发生脱离混合物的情况, 且温度越高发生脱离行为的烷烃数目越多. 烷烃链与石墨烯的相互作用在此过程中起重要作用.

关键词: 烷烃混合物, 取向, 石墨烯, 分子动力学模拟

Abstract:

The orientation of alkane mixtures on graphene was studied by molecular dynamics simulation. It has been found that the orientation is affected by the simulation temperature. The alkane chains are laid perpendicular to the graphene at low temperature and parallel to the surface at high temperature. As the temperature increases, some of the shorter alkane chains will leave the mixture, and the number of these shorter alkane chains will gradually increase.

Key words: Alkane mixture, Orientation, Graphene, Molecular dynamics simulation

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