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异亮氨酸的真空紫外光电离和光离解
引用本文:谢阳,曹兰兰,张强,陈军,储根柏,赵玉杰,单晓斌,刘付轶,盛六四.异亮氨酸的真空紫外光电离和光离解[J].化学物理学报,2012,25(4):379-388.
作者姓名:谢阳  曹兰兰  张强  陈军  储根柏  赵玉杰  单晓斌  刘付轶  盛六四
作者单位:中国科学技术大学国家同步辐射实验室,核科学技术学院, 合肥230029;中国科学技术大学国家同步辐射实验室,核科学技术学院, 合肥230029;中国科学技术大学国家同步辐射实验室,核科学技术学院, 合肥230029;中国科学技术大学国家同步辐射实验室,核科学技术学院, 合肥230029;中国科学技术大学国家同步辐射实验室,核科学技术学院, 合肥230029;中国科学技术大学国家同步辐射实验室,核科学技术学院, 合肥230029;中国科学技术大学国家同步辐射实验室,核科学技术学院, 合肥230029;中国科学技术大学国家同步辐射实验室,核科学技术学院, 合肥230029;中国科学技术大学国家同步辐射实验室,核科学技术学院, 合肥230029
摘    要:利用同步辐射光电离质谱结合理论计算, 研究了异亮氨酸的真空紫外光诱导电离解离.在光子能量为13 eV的质谱中探测到了m/z=86、75、74、69、57、46、45、44、41、30、28、18的碎片离子.对于异亮氨酸的主要碎片离子为:C5H12N+ (m/z=86)、C2H5NO4+ (m/z=75)、C5H9+ (m/z=69)、C4H9+(m/z=57)和CH4N+(m/z=30).由光电离效率曲线得到出现势分别为:8.84±0.07、9.25±0.06、10.20±0.12、9.25±0.10、11.05±0.07 eV.结合量化理论计算(B3LYP/6-31++G(d,p)),详细给出了它们可能的生成路径.这些解离通道包括简单的键断裂反应和涉及中间体、过渡态的反应,实验值和理论计算的离子出现能或势垒一致.

关 键 词:同步辐射,真空紫外,光电离质谱,异亮氨酸,解离通道
收稿时间:2012/5/14 0:00:00

Photofragmentation of Isoleucine by Vacuum Ultraviolet Photoionization
Yang Xie,Lan-lan Cao,Qiang Zhang,Jun Chen,Gen-bai Chu,Yu-jie Zhao,Xiao-bin Shan,Fu-yi Liu and Liu-si Sheng.Photofragmentation of Isoleucine by Vacuum Ultraviolet Photoionization[J].Chinese Journal of Chemical Physics,2012,25(4):379-388.
Authors:Yang Xie  Lan-lan Cao  Qiang Zhang  Jun Chen  Gen-bai Chu  Yu-jie Zhao  Xiao-bin Shan  Fu-yi Liu and Liu-si Sheng
Institution:National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China;National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China;National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China;National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China;National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China;National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China;National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China;National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China;National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China
Abstract:
Keywords:Synchrotron radiation  Vacuum ultraviolet  Photoionization mass spec-troscopy  Isoleucine  Dissociation pathway
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