Intramolecular electron-induced proton transfer and its correlation with excited-state intramolecular proton transfer

Wei Wang, Mary Marshall, Evan Collins, Sara Marquez, Chaonan Mu, Kit H. Bowen () and Xinxing Zhang ()
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Wei Wang: Nankai University
Mary Marshall: Johns Hopkins University
Evan Collins: Johns Hopkins University
Sara Marquez: Johns Hopkins University
Chaonan Mu: Nankai University
Kit H. Bowen: Johns Hopkins University
Xinxing Zhang: Nankai University

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract Electron-induced proton transfer depicts the proton motion coupled with the attachment of a low-energy electron to a molecule, which helps to understand copious fundamental chemical processes. Intramolecular electron-induced proton transfer is a similar process that occurs within a single molecule. To date, there is only one known intramolecular example, to the best of our knowledge. By studying the 10-hydroxybenzo[h]quinoline and 8-hydroxyquinoline molecules using anion photoelectron spectroscopy and density functional theory, and by theoretical screening of six other molecules, here we show the intramolecular electron-induced proton transfer capability of a long list of molecules that meanwhile have the excited-state intramolecular proton transfer property. Careful examination of the intrinsic electronic signatures of these molecules reveals that these two distinct processes should occur to the same category of molecules. Intramolecular electron-induced proton transfer could have potential applications such as molecular devices that are responsive to electrons or current.

Date: 2019
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DOI: 10.1038/s41467-019-09154-5

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