Excluded volume effects on the intrachain reaction kinetics

The Journal of Physical Chemistry. B
Ji-Hyun KimSangyoub Lee

Abstract

On the basis of the recently developed optimized Rouse-Zimm theory of chain polymers with excluded volume interactions, we calculate the long-time first-order rate constant k(1) for end-to-end cyclization of linear chain polymers. We first find that the optimized Rouse-Zimm theory provides the longest chain relaxation times tau(1) of excluded volume chains that are in excellent agreement with the available Brownian dynamics simulation results. In the free-draining limit, the cyclization rate is diffusion-controlled and k(1) is inversely proportional to tau(1), and the k(1) values calculated using the Wilemski-Fixman rate theory are in good agreement with Brownian dynamics simulation results. However, when hydrodynamic interactions are included, noticeable deviations are found. The main sources of errors are fluctuating hydrodynamic interaction and correlation hole effects as well as the non-Markovian reaction dynamic effect. The physical natures of these factors are discussed, and estimates for the magnitudes of required corrections are given. When the corrections are included, the present theory allows the prediction of accurate k(1) values for the cyclization of finite-length chains in good solvents as well as the correct sca...Continue Reading

References

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Jul 23, 2004·The Journal of Chemical Physics·Pallavi Debnath, Binny J Cherayil
Dec 21, 2004·The Journal of Chemical Physics·Ji-Hyun Kim, Sangyoub Lee
Jun 25, 2005·The Journal of Chemical Physics·Chuck Yeung, Barry Friedman
Mar 18, 2006·The Journal of Chemical Physics·Changbong Hyeon, D Thirumalai
Oct 16, 2007·The Journal of Physical Chemistry. B·Ji-Hyun Kim, Sangyoub Lee

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Citations

Apr 4, 2015·The Journal of Chemical Physics·Wancheng Yu, Kaifu Luo
Feb 16, 2010·The Journal of Physical Chemistry. B·Ryan R Cheng, Dmitrii E Makarov

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