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Title: Ultrafast structural rearrangement dynamics induced by the photodetachment of phenoxide in aqueous solution
Authors: Debnath, Tushar
Muhammad Shafiq Mohd Yusof
Low, Pei Jiang
Loh, Zhi-Heng
Keywords: Science::Chemistry
Atomic and Molecular Physics
Chemical Physics
Issue Date: 2019
Source: Debnath, T., Muhammad Shafiq Mohd Yusof, Low, P. J., & Loh, Z.-H. (2019). Ultrafast structural rearrangement dynamics induced by the photodetachment of phenoxide in aqueous solution. Nature Communications, 10(1), 2944-. doi:10.1038/s41467-019-10989-1
Series/Report no.: Nature Communications
Abstract: The elementary processes that accompany the interaction of ionizing radiation with biologically relevant molecules are of fundamental importance. However, the ultrafast structural rearrangement dynamics induced by the ionization of biomolecules in aqueous solution remain hitherto unknown. Here, we employ femtosecond optical pump-probe spectroscopy to elucidate the vibrational wave packet dynamics that follow the photodetachment of phenoxide, a structural mimic of tyrosine, in aqueous solution. Photodetachment of phenoxide leads to wave packet dynamics of the phenoxyl radical along 12 different vibrational modes. Eight of the modes are totally symmetric and support structural rearrangement upon electron ejection. Comparison to a previous photodetachment study of phenoxide in the gas phase reveals the important role played by the solvent environment in driving ultrafast structural reorganization induced by ionizing radiation. This work provides insight into the ultrafast molecular dynamics that follow the interaction of ionizing radiation with molecules in aqueous solution.
DOI: 10.1038/s41467-019-10989-1
DOI (Related Dataset): 10.21979/N9/IBV7LZ
Schools: School of Physical and Mathematical Sciences 
Research Centres: Centre for Optical Fibre Technology 
The Photonics Institute 
Rights: © 2019 The Author(s). Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
Fulltext Permission: open
Fulltext Availability: With Fulltext
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