Probing the Charge-Transfer Potential Energy Surfaces by the Photodissociation of [Ar-N].

J Phys Chem Lett

Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.

Published: April 2021

AI Article Synopsis

  • The study explores the dynamics of charge-transfer complex [Ar-N] and how potential energy surfaces (PESs) govern ion-molecule reactions.
  • High-resolution images of N photofragments show vibrational state-specific correlations, indicating nonadiabatic charge-transfer mechanisms during photodissociation.
  • The findings help determine resonant charge-transfer probabilities and improve understanding of chemical dynamics in charge-transfer complexes.

Article Abstract

Chemical reaction pathways and product state correlations of gas-phase ion-molecule reactions are governed by the involved potential energy surfaces (PESs). Here, we report the photodissociation dynamics of charge-transfer complex [Ar-N], which is the intermediate of the model system of the Ar + N → Ar + N reaction. High-resolution recoiling velocity images of photofragmented N and N from different dissociation channels exhibit a vibrational state-specific correlation, revealing the nonadiabatic charge-transfer mechanisms upon the photodissociation of [Ar-N]. The state-resolved product branching ratios have yielded an accurate determination of the resonant charge-transfer probabilities. This work provides a powerful approach to elucidating the detailed dynamics of chemical events of charge-transfer complex [Ar-N] and to probing the state-to-state charge-transfer PESs.

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Source
http://dx.doi.org/10.1021/acs.jpclett.1c00798DOI Listing

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