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DOI | 10.1126/science.aan5144 |
Large-amplitude transfer motion of hydrated excess protons mapped by ultrafast 2D IR spectroscopy | |
Dahms, Fabian1; Fingerhut, Benjamin P.1; Nibbering, Erik T. J.1; Pines, Ehud2; Elsaesser, Thomas1 | |
2017-08-04 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 357期号:6350页码:491-494 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | Solvation and transport of excess protons in aqueous systems play a fundamental role in acid-base chemistry and biochemical processes. We mapped ultrafast proton excursions along the proton transfer coordinate by means of two-dimensional infrared spectroscopy, both in bulk water and in a Zundel cation (H5O2)(+) motif selectively prepared in acetonitrile. Electric fields from the environment and stochastic hydrogen bond motions induce fluctuations of the proton double-minimum potential. Within the lifetime of a particular hydration geometry, the proton explores a multitude of positions on a sub-100-femtosecond time scale. The proton transfer vibration is strongly damped by its 20- to 40-femtosecond population decay. Our results suggest a central role of Zundel-like geometries in aqueous proton solvation and transport. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000406840100035 |
WOS关键词 | WATER ; H5O2+ ; DYNAMICS ; ENERGY ; MECHANISM ; SPECTRUM ; CATION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/196594 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Max Born Inst Nichtlineare Opt & Kurzzeitspektro, D-12489 Berlin, Germany; 2.Max Born Inst Nichtlineare Opt & Kurzzeitspektro, D-12489 Berlin, Germany |
推荐引用方式 GB/T 7714 | Dahms, Fabian,Fingerhut, Benjamin P.,Nibbering, Erik T. J.,et al. Large-amplitude transfer motion of hydrated excess protons mapped by ultrafast 2D IR spectroscopy[J]. SCIENCE,2017,357(6350):491-494. |
APA | Dahms, Fabian,Fingerhut, Benjamin P.,Nibbering, Erik T. J.,Pines, Ehud,&Elsaesser, Thomas.(2017).Large-amplitude transfer motion of hydrated excess protons mapped by ultrafast 2D IR spectroscopy.SCIENCE,357(6350),491-494. |
MLA | Dahms, Fabian,et al."Large-amplitude transfer motion of hydrated excess protons mapped by ultrafast 2D IR spectroscopy".SCIENCE 357.6350(2017):491-494. |
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