Identification of the Decay Pathway of Photoexcited Nucleobases

作     者：Xiangxu Mu Ming Zhang Jiechao Feng Hanwei Yang Nikita Medvedev Xinyang Liu Leyi Yang Zhenxiang Wu Haitan Xu Zheng Li 

作者机构：State Key Laboratory for Mesoscopic Physics and Collaborative Innovation Center of Quantum Matter.School of PhysicsPeking UniversityBeijing 100871China institute of Physics Czech Academy of ScienceNa Slovance 218221 Prague 8Czech Republic School of Materials Science and Intelligent EngineeringNanjing UniversitySuzhou 215163China Shenzhen Institute for Quantum Science and EngineeringSouthern University of Science and TechnologyShenzhenChina School of Physical SciencesUniversity of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Extreme OpticsShanxi UniversityTaiyuanShanxi 030006 China Peking University Yangtze Delta Institute of OptoelectronicsNantongJiangsu 226010China 

出 版 物：《Ultrafast Science》 (超快科学（英文）)

年 卷 期：2023年第3卷第2期

页      面：31-38页

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China[grant numbers 12174009,11974031,12104082,12234002,and 92250303] Beijing Natural Science Foundation[grant number Z220008] N.M.gratefully acknowledges financial support from the Czech Ministry of Education,Youth,and Sports[grantnumbers LTT17015,LM2018114,and EF16_013/0001552] 

主　　题：methods excited uracil 

摘      要：The identification of the decay pathway of the nucleobase uracil after being photoexcited by ultraviolet light has been a long-standing *** theoretical models have been proposed but yet to be ***,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 *** 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.