Ejection dynamics of semiflexible polymers out of a nanochannel

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• 作者：Li-qin Zhou ; Wan-cheng Yu 昱万程 ; Yu-hao Chen 陈宇浩…
• 刊名：Chinese Journal of Polymer Science
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：34
• 期：10
• 页码：1196-1207
• 全文大小：1,198 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Condensed Matter Physics
  Industrial Chemistry and Chemical Engineering
  Polymer Sciences
  Characterization and Evaluation of Materials
  
• 出版者：Chinese Chemical Society and Institute of Chemistry, CAS, co-published with Springer
• ISSN：1439-6203
• 卷排序：34

文摘

Using theoretical analysis and three-dimensional Langevin dynamics simulations, we investigate the influence of chain rigidity on the ejection dynamics of polymers from a nanochannel. We find that there exist two distinct dynamical regimes divided by a critical chain length for both flexible and semiflexible chains. At the short chain regime, semiflexible chains eject faster than flexible chains of the same chain length due to the longer occupying length. In contrast, at the long chain regime, semiflexible chains eject slower than flexible ones as the effective entropic driving force decreases. Based on these results, we propose that the nanochannels could be used to separate flexible and semiflexible chains effectively.KeywordsEjection dynamicsSemiflexible polymersLangevin dynamics simulationsChain separation