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首页> 外文期刊>Macromolecular theory and simulations >The Presence of a Wall Enhances the Probability for Ring-Closing Metathesis: Insights from Classical Polymer Theory and Atomistic Simulations
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The Presence of a Wall Enhances the Probability for Ring-Closing Metathesis: Insights from Classical Polymer Theory and Atomistic Simulations

机译：壁的存在增强了闭环复分解的概率：古典聚合物理论和原子模拟的见解

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The probability distribution of chain ends meeting when one end of the polymer is fixed to a certain distance to a reflecting wall is investigated. For an ideal polymer chain the probability distribution can be evaluated analytically via classic polymer theory. These analytical predictions are compared to atomistic MD simulations of one tethered alkane chain close to the wall. The results demonstrate that a confining wall can lead to a significant increase in the return probability for the chain ends, and thus, can increase the occurrence of ring-closing reactions. It is further demonstrated that the excess return probability shows a maximum at a certain distance, thereby yielding an optimal catalyst position in the ring-closing reaction.
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