Probing the vibrational spectroscopy of the deprotonated thymine radical by photodetachment and state-selective autodetachment photoelectron spectroscopy via dipole-bound states
文献类型：期刊论文
| 作者 | Huang, DL; Liu, HT; Ning, CG; Zhu, GZ; Wang, LS |
| 刊名 | CHEMICAL SCIENCE
 |
| 出版日期 | 2015 |
| 卷号 | 6期号:5页码:3129—3138 |
| 关键词 | DISSOCIATIVE ELECTRON-ATTACHMENT LOW-ENERGY ELECTRONS ACETALDEHYDE ENOLATE ANION DNA-STRAND BREAKS NEGATIVE-IONS SUPPORTED STATE CRITICAL BINDING CROSS-SECTIONS WATER CLUSTERS BASE THYMINE |
| 英文摘要 | Deprotonated thymine can exist in two different forms, depending on which of its two N sites is deprotonated: N1[T-H](-) or N3[T-H](-). Here we report a photodetachment study of the N1[T-H](-) isomer cooled in a cryogenic ion trap and the observation of an excited dipole-bound state. Eighteen vibrational levels of the dipole-bound state are observed, and its vibrational ground state is found to be 238 +/- 5 cm(-1) below the detachment threshold of N1[T-H](-). The electron affinity of the deprotonated thymine radical (N1[T-H](center dot)) is measured accurately to be 26 322 +/- 5 cm(-1) (3.2635 +/- 0.0006 eV). By tuning the detachment laser to the sixteen vibrational levels of the dipole-bound state that are above the detachment threshold, highly non-Franck-Condon resonant-enhanced photoelectron spectra are obtained due to state- and mode-selective vibrational autodetachment. Much richer vibrational information is obtained for the deprotonated thymine radical from the photodetachment and resonant-enhanced photoelectron spectroscopy. Eleven fundamental vibrational frequencies in the low-frequency regime are obtained for the N1[T-H](center dot) radical, including the two lowest-frequency internal rotational modes of the methyl group at 70(-8) cm(-1) and 92(-5) cm(-1). |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/24546]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Huang, DL,Liu, HT,Ning, CG,et al. Probing the vibrational spectroscopy of the deprotonated thymine radical by photodetachment and state-selective autodetachment photoelectron spectroscopy via dipole-bound states[J]. CHEMICAL SCIENCE,2015,6(5):3129—3138. |
| APA | Huang, DL,Liu, HT,Ning, CG,Zhu, GZ,&Wang, LS.(2015).Probing the vibrational spectroscopy of the deprotonated thymine radical by photodetachment and state-selective autodetachment photoelectron spectroscopy via dipole-bound states.CHEMICAL SCIENCE,6(5),3129—3138. |
| MLA | Huang, DL,et al."Probing the vibrational spectroscopy of the deprotonated thymine radical by photodetachment and state-selective autodetachment photoelectron spectroscopy via dipole-bound states".CHEMICAL SCIENCE 6.5(2015):3129—3138. |
入库方式： OAI收割
来源：上海应用物理研究所
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