Perfect Composition Depth Profiling of Ionic Liquid Surfaces Using High-Resolution RBS/ERDA.

Kód výsledku v IS VaVaI

RIV/67985858:_____/16:00463598 - isvavai.cz

Nalezeny alternativní kódy

RIV/44555601:13440/16:43887805

Výsledek na webu

http://dx.doi.org/10.2116/analsci.32.1089

DOI - Digital Object Identifier

10.2116/analsci.32.1089

Jazyk výsledku

angličtina

Název v původním jazyce

Perfect Composition Depth Profiling of Ionic Liquid Surfaces Using High-Resolution RBS/ERDA.

Popis výsledku v původním jazyce

In order to reveal the surface structures of large molecular ionic liquids (ILs), the near-surface elemental depth distributions of 1-alkyl 3-methylimidazolium bis(trifluoromethanesulfonyl)imide n([CnC1Im][Tf2N], n = 2, 6, 10) were studied using high-resolution Rutherford backscattering spectroscopy (HRBS) in combination with high-resolution elastic recoil detection analysis (HR-ERDA). nThe elemental depth profiles of all constituent elements, including hydrogen, were derived from HR-ERDA/HRBS measurements, so that the profiles would reproduce both HR-ERDA and HRBS nspectra simultaneously. The derived elemental depth profiles agree with state-of-the-art molecular dynamics simulations, indicating the feasibility of this method. A controversy concerning the preferential orientation of [C2C1Im] at the surface has been resolved by this new combination analysis; namely, the [C2C1Im] cation has a preferential orientation with the ethyl chain pointing to wards the vacuum in the topmost molecular layer.

Název v anglickém jazyce

Perfect Composition Depth Profiling of Ionic Liquid Surfaces Using High-Resolution RBS/ERDA.

Popis výsledku anglicky

In order to reveal the surface structures of large molecular ionic liquids (ILs), the near-surface elemental depth distributions of 1-alkyl 3-methylimidazolium bis(trifluoromethanesulfonyl)imide n([CnC1Im][Tf2N], n = 2, 6, 10) were studied using high-resolution Rutherford backscattering spectroscopy (HRBS) in combination with high-resolution elastic recoil detection analysis (HR-ERDA). nThe elemental depth profiles of all constituent elements, including hydrogen, were derived from HR-ERDA/HRBS measurements, so that the profiles would reproduce both HR-ERDA and HRBS nspectra simultaneously. The derived elemental depth profiles agree with state-of-the-art molecular dynamics simulations, indicating the feasibility of this method. A controversy concerning the preferential orientation of [C2C1Im] at the surface has been resolved by this new combination analysis; namely, the [C2C1Im] cation has a preferential orientation with the ethyl chain pointing to wards the vacuum in the topmost molecular layer.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

GA16-12291S: Hierarchický přístup ke studiu rovnováhy mezi pevnou a kapalnou fází v komplexních systémech: teorie, simulace a experiment

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Analytical Sciences

ISSN

0910-6340

e-ISSN

—

Svazek periodika

32

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

JP - Japonsko

Počet stran výsledku

6

Strana od-do

1089-1094

Kód UT WoS článku

000386423300010

EID výsledku v databázi Scopus

2-s2.0-84992521789