Real-Time Observation of the Destruction of Hydration Shells under Electrochemical Force.
Major alteration or even destruction of the hydration shell around interacting molecules and ions in solution is an important process that determines how hydrated substances interact. Therefore, the direct observation of structural changes in hydration shells around solutes in close contact with oth...
| Publicado en: | Journal of the American Chemical Society Vol. 135; no. 40; pp. 15033 - 15040 |
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| Autores principales: | , , , , |
| Formato: | Artículo |
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American Chemical Society
10/9/2013
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=91094120&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 91094120 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 10/9/2013 vid: 135 iid: 40 pid: 997 pub: American Chemical Society artinfo: ui: 91094120 10.1021/ja408326d ppf: 15033 ppct: 7 formats: tig: atl: Real-Time Observation of the Destruction of Hydration Shells under Electrochemical Force. aug: au: Akira Yamakata Eiji Soeta Tatsuya Ishiyama Masatoshi Osawa Akihiro Morita affil: Graduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan Catalysis Research Center, Hokkaido University, N-21 W-10, Kita-ku, Sapporo 001-0021, Japan Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto 615-8520, Japan su: Hydration Infrared absorption Cations Cobalt Platinum Adsorption (Chemistry) Electrochemistry Molecular dynamics sug: subj: Hydration Infrared absorption Cations Cobalt Platinum Adsorption (Chemistry) Electrochemistry Molecular dynamics ab: Major alteration or even destruction of the hydration shell around interacting molecules and ions in solution is an important process that determines how hydrated substances interact. Therefore, the direct observation of structural changes in hydration shells around solutes in close contact with other solutes or surfaces is important for understanding chemical processes that take place in solution. In the work described in this paper, time-resolved IR absorption measurements were performed to study the interaction of hydrated Na+ or tetrapropylammonium cation (PrN+) with a hydrophobic CO-covered Pt surface; the adsorption force between cations and the surface was controlled by using an electrochemical system. We found that the hydrophobic hydration shell of PrN+ is initially stabilized on the hydrophobic surface, but application of a strong force to the cation approaching CO destroys the water layers between them. This process is rather slow, taking a few hundred milliseconds. Hydrophilic Na+ behaves quite differently from PrN+ due to the different structure of its hydration shell. These experimental results are supported by molecular dynamics simulations. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2013 holdings: @attributes: islocal: N |
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