# Correlated reaction coordinate motion produces non-additive rate enhancement for electron and energy transfer in multi-acceptor structures

Source: [Correlated reaction coordinate motion produces non-additive rate enhancement for electron and energy transfer in multi-acceptor structures](<https://www.sota2.com/research/paper/68fa4aba1e209131ce940c9e>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T07:59:43.361Z

Authors: Hanggai Nuomin, Feng-Feng Song, Peng Zhang, David N. Beratan

Published: 2025-06-26T17:30:56.000Z

## Abstract

Molecular structures with multiple donor, bridge, or acceptor units can display quantum interference effects that influence electron and energy transfer (ET and EnT) rates. Recent experiments found a 4- to 5-fold increase in ET rates for donor-acceptor structures with two acceptors compared to one. This result is surprising: simple classical or quantum analysis suggests a factor of two rate enhancement. We analyze the coupling interactions in multiple acceptor systems and find that rate enhancements beyond additive effects arise from acceptor-acceptor interactions that: 1) shift the reaction free energy, 2) change the donor-acceptor couplings, and 3) alter the reaction-coordinate motion. Consideration of these effects explains the observed rates in multi-acceptor systems and suggests strategies to tailor energy and electron transfer kinetics.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2506.21504>)

[PDF](<https://arxiv.org/pdf/2506.21504.pdf>)