高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (4): 735.doi:

• 研究论文 • 上一篇    下一篇

气/液界面上β-环糊精与十六烷基三甲基溴化铵包结物形成的分子动力学模拟

庞瑾瑜, 徐桂英, 白燕, 赵涛涛   

  1. 山东大学胶体与界面化学教育部重点实验室, 济南 250100
  • 收稿日期:2008-09-26 出版日期:2009-04-10 发布日期:2009-04-10
  • 通讯作者: 徐桂英, E-mail:xuguiying@sdu.edu.cn

Molecular Dynamics Simulation of the Inclusion Complex of β-Cyclodextrin with CTAB at Air/Water Interface

PANG Jin-Yu, XU Gui-Ying*, BAI Yan, ZHAO Tao-Tao   

  1. Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China
  • Received:2008-09-26 Online:2009-04-10 Published:2009-04-10
  • Contact: XU Gui-Ying, E-mail:xuguiying@sdu.edu.cn

摘要:

利用分子动力学模拟的方法从分子水平上研究了气/液界面上β-环糊精(β-CD)与十六烷基三甲基溴化铵(CTAB)包结物的形成. 对β-CD与CTAB摩尔比分别为1∶1和2∶1的两个体系进行了模拟研究, 体系的能量、径向分布函数和均方根位移变化的结果表明, β-CD与CTAB分子可以在气/液界面上形成包结物, 相对而言, 更易形成1∶1型包结物.

关键词: 分子动力学模拟, β-环糊精, 十六烷基三甲基溴化铵, 包结物, 气/液界面

Abstract:

Molecular dynamics simulation was used to study the inclusion complex of β-cyclodextrin(β-CD) with CTAB at air/water interface. Two systems were chosen: the molar concentration ratio of β-CD and CTAB was 1∶1 and 2∶1, respectively. We investigated the energy of the systems, radial distribution function and mean square displacement in this paper. As a result, it was suggested that CTAB molecules and β-CD molecules form inclusion complexes at air/water interface in which the guest is included within the β-CD cavity and they are easily to form 1∶1 inclusion complexes.

Key words: Molecular dynmics simulation, β-Cyclodextrin, Cetyhrimethyl ammonium bromide(CTAB), Inclusion complex, Air/water interface

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