Influence of endohedral water on diameter sorting of single-walled carbon nanotubes by density gradient centrifugation.
Influence of endohedral water on diameter sorting of single-walled carbon nanotubes by density gradient centrifugation.
复制标题
内嵌水对密度梯度离心单壁碳纳米管直径分选的影响。
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
W. Wenzel
中科院分区：
文献类型：
--
作者：
A. Quintilla;F. Hennrich;S. Lebedkin;M. Kappes;W. Wenzel
单壁碳纳米管(SWNT)的直径分离是控制实验研究和有效应用这些体系的重要前提。通过将实验数据与分子动力学(MD)模拟结果进行比较，我们证明了水的充填对单壁碳纳米管悬浮在水基表面活性剂悬浮液中的有效质量密度有显著的管径依赖性影响。我们提出了一个纳米管-表面活性剂复合体在水溶液中的有效密度的模型，该模型允许在整个实验相关的SWNT直径范围内全面描述其密度。该模型的参数可以从分子动力学模拟和/或实验中获得，并有助于解释表面活性剂覆盖率和面体内水在梯度离心法分离特定直径的SWNT物种中的微妙相互作用。
Separation of single-walled carbon nanotubes (SWNT) by diameter is an important prerequisite for controlled experimental studies and efficient application of these systems. By comparing experimental data with molecular dynamics (MD) simulations, we demonstrate that water filling has a significant, tube-diameter dependent effect on the effective mass density of individual single-walled carbon nanotubes suspended in aqueous surfactant suspensions. We present a model for the effective density of the nanotube-surfactant complex in aqueous solution that permits a comprehensive description of its density across the entire, experimentally relevant range of SWNT diameters. Parameters for this model can be obtained from molecular dynamics simulations and/or experiment and help explain the subtle interplay of surfactant coverage and endohedral water in the separation of a particular diameter species of SWNT by gradient centrifugation.
影响因子：
6.3
作者：
BERENDSEN, HJC;VANDERSPOEL, D;VANDRUNEN, R
通讯作者：
VANDRUNEN, R
影响因子：
3.7
作者：
K. Matsuda;T. Hibi;H. Kadowaki;H. Kataura;Y. Maniwa
通讯作者：
K. Matsuda;T. Hibi;H. Kadowaki;H. Kataura;Y. Maniwa