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X-Ray reflectometry studies on the effect of water on the surface structure of [C(4)mpyr][NTf2] ionic liquid
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SYSNO ASEP 0341127 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název X-Ray reflectometry studies on the effect of water on the surface structure of [C(4)mpyr][NTf2] ionic liquid Tvůrce(i) Minofar, Babak (UEK-B) RID Celkový počet autorů 6 Zdroj.dok. Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076
Roč. 11, č. 48 (2009), s. 11507-11514Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova SUM-FREQUENCY GENERATION ; MOLECULAR-DYNAMICS ; AQUEOUS-SOLUTIONS Vědní obor RIV CE - Biochemie CEP LC06010 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z60870520 - UEK-B (2005-2011) UT WOS 000272271400018 Anotace The effect of water on surface structure of 1-butyl-1-methylpyrrolidinium trifluoromethylsulfonylimide was investigated using X-ray reflectometry. The measured data suggests a significant amount of water is adsorbed at the surface, with the first layer from the gas-liquid phase mainly occupied by a mixture of cations and water. Beyond the cation+water layer, the scattering length density increases towards the bulk value, indicats a decreas amount of water and cations, and/or an increasing amount of anions. The orientation of the butyl chain of cation at the phase boundary and the population of water at the surface were described based on results from molecular dynamics simulation. We show that the presence of water in the ionic liquid has a non-monotonic effect on the thickness of the surface. At low water content, the addition of water does not change the surface thickness since water is mainly present in the bulk. As the water content increases the surface swells shrinks down. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2010
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