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Volume 195, 2016
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Mean field ring polymer molecular dynamics for electronically nonadiabatic reaction rates

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Abstract

We present a mean field ring polymer molecular dynamics method to calculate the rate of electron transfer (ET) in multi-state, multi-electron condensed-phase processes. Our approach involves calculating a transition state theory (TST) estimate to the rate using an exact path integral in discrete electronic states and continuous Cartesian nuclear coordinates. A dynamic recrossing correction to the TST rate is then obtained from real-time dynamics simulations using mean field ring polymer molecular dynamics. We employ two different reaction coordinates in our simulations and show that, despite the use of mean field dynamics, the use of an accurate dividing surface to compute TST rates allows us to achieve remarkable agreement with Fermi's golden rule rates for nonadiabatic ET in the normal regime of Marcus theory. Further, we show that using a reaction coordinate based on electronic state populations allows us to capture the turnover in rates for ET in the Marcus inverted regime.

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Publication details

The article was received on 09 May 2016, accepted on 07 Jun 2016 and first published on 07 Jun 2016


Article type: Paper
DOI: 10.1039/C6FD00123H
Citation: Faraday Discuss., 2016,195, 253-268
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    Mean field ring polymer molecular dynamics for electronically nonadiabatic reaction rates

    J. R. Duke and N. Ananth, Faraday Discuss., 2016, 195, 253
    DOI: 10.1039/C6FD00123H

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