Identification of the Decay Pathway of Photoexcited Nucleobases

Xiangxu Mu; Ming Zhang; Jiechao Feng; Hanwei Yang; Nikita Medvedev; Xinyang; Liu; Leyi Yang; Zhenxiang Wu; Haitan Xu and Zheng Li

doi:10.34133/ultrafastscience.0015

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Identification of the Decay Pathway of Photoexcited Nucleobases

Research Article | Updated：2024-10-22

- Identification of the Decay Pathway of Photoexcited Nucleobases
- 超快科学（英文） 2023年3卷第2期
- Affiliations：
  
  a State Key Laboratory for Mesoscopic Physics and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing 100871, China. b Institute of Physics Czech Academy of Science, Na Slovance 2, 182 21 Prague 8, Czech Republic. c School of Materials Science and Intelligent Engineering, Nanjing University, Suzhou 215163, China. d Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen, China. e School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China. f Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China. g Peking University Yangtze Delta Institute of Optoelectronics,Jiangsu,Nantong,China,226010
- Author bio：
- Funds：
  
  This work was supported by the National Natural Science Foundation of China [grant numbers 12174009, 11974031, 12104082, 12234002, and 92250303] and Beijing Natural Science Foundation [grant number Z220008]. N.M. gratefully acknowledges financial support from the Czech Ministry of Education, Youth, and Sports [grant numbers LTT17015, LM2018114, and EF16_013/0001552].
- DOI：10.34133/ultrafastscience.0015
  中图分类号：
- 纸质出版日期：2023，
- Accepted：
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Xiangxu Mu, Ming Zhang, Jiechao Feng, Hanwei Yang, Nikita Medvedev, Xinyang，Liu, Leyi Yang, Zhenxiang Wu, Haitan Xu and Zheng Li. 2023: Identification of the Decay Pathway of Photoexcited Nucleobases. 超快科学, 3(2).

Xiangxu Mu, Ming Zhang, Jiechao Feng, Hanwei Yang, Nikita Medvedev, Xinyang，Liu, Leyi Yang, Zhenxiang Wu, Haitan Xu and Zheng Li. 2023: Identification of the Decay Pathway of Photoexcited Nucleobases. Ultrafast Science, 3(2).
Xiangxu Mu, Ming Zhang, Jiechao Feng, Hanwei Yang, Nikita Medvedev, Xinyang，Liu, Leyi Yang, Zhenxiang Wu, Haitan Xu and Zheng Li. 2023: Identification of the Decay Pathway of Photoexcited Nucleobases. 超快科学, 3(2). DOI： 10.34133/ultrafastscience.0015

Xiangxu Mu, Ming Zhang, Jiechao Feng, Hanwei Yang, Nikita Medvedev, Xinyang，Liu, Leyi Yang, Zhenxiang Wu, Haitan Xu and Zheng Li. 2023: Identification of the Decay Pathway of Photoexcited Nucleobases. Ultrafast Science, 3(2). DOI： 10.34133/ultrafastscience.0015

摘要

The identification of the decay pathway of the nucleobase uracil after being photoexcited by ultraviolet light has been a long-standing problem. Various theoretical models have been proposed but yet to be verified. Here

we propose an experimental scheme to test the theoretical models of gas phase uracil decay mechanism by a combination of ultrafast x-ray spectroscopy

x-ray diffraction

and electron diffraction methods. Incorporating the signatures of multiple probing methods

we demonstrate an approach that can identify the dominant mechanism of the geometric and electronic relaxation of the photoexcited uracil molecule among several candidate models.

Abstract

we propose an experimental scheme to test the theoretical models of gas phase uracil decay mechanism by a combination of ultrafast x-ray spectroscopy

x-ray diffraction

and electron diffraction methods. Incorporating the signatures of multiple probing methods

we demonstrate an approach that can identify the dominant mechanism of the geometric and electronic relaxation of the photoexcited uracil molecule among several candidate models.

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