Identification of the Decay Pathway of Photoexcited Nucleobases

Mu，Xiangxu1; Zhang，Ming1; Feng，Jiechao1; Yang，Hanwei1; Medvedev，Nikita2; Liu，Xinyang1; Yang，Leyi1; Wu，Zhenxiang1; Xu，Haitan3,4,5; Li，Zheng1,6,7

2023

10.34133/ultrafastscience.0015

Ultrafast Science   Impact Factor & Quartile

2765-8791

2097-0331

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.

English

Corresponding

National Natural Science Foundation of China[11974031];National Natural Science Foundation of China[12104082];National Natural Science Foundation of China[12174009];National Natural Science Foundation of China[12234002];National Natural Science Foundation of China[92250303];Natural Science Foundation of Beijing Municipality[Z220008];

2-s2.0-85152207784

Scopus

1.State Key Laboratory for Mesoscopic Physics and Collaborative Innovation Center of Quantum Matter,School of Physics,Peking University,Beijing,100871,China
2.Institute of Physics Czech Academy of Science,Prague 8,Na Slovance 2,182 21,Czech Republic
3.School of Materials Science and Intelligent Engineering,Nanjing University,Suzhou,215163,China
4.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,China
5.School of Physical Sciences,University of Science and Technology of China,Hefei,230026,China
6.Collaborative Innovation Center of Extreme Optics,Shanxi University,Taiyuan,Shanxi,030006,China
7.Peking University Yangtze Delta Institute of Optoelectronics,Nantong,Jiangsu,226010,China

Mu，Xiangxu,Zhang，Ming,Feng，Jiechao,et al. Identification of the Decay Pathway of Photoexcited Nucleobases[J]. Ultrafast Science,2023,3.

Mu，Xiangxu.,Zhang，Ming.,Feng，Jiechao.,Yang，Hanwei.,Medvedev，Nikita.,...&Li，Zheng.(2023).Identification of the Decay Pathway of Photoexcited Nucleobases.Ultrafast Science,3.

Mu，Xiangxu,et al."Identification of the Decay Pathway of Photoexcited Nucleobases".Ultrafast Science 3(2023).