Observation of surface structure of 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide using high-resolution Rutherford backscattering spectroscopy.
スポンサーリンク
概要
- 論文の詳細を見る
The surface structures of 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C(n)MIM][TFSI], n=2,4,6) are studied by high-resolution Rutherford backscattering spectroscopy. The average composition of the surface molecular layer is very close to the stoichiometric composition, showing that neither ion is enriched in the surface layer. A detailed analysis indicates that both cations and anions have preferential molecular orientations at the surface. The alkyl chains of the [C(n)MIM] cations protrude to the vacuum and the CF(3) groups of the [TFSI] anions are also pointing toward the vacuum. While the orientation of the [TFSI] anion becomes weaker with increasing alkyl-chain length, the protrusion of the alkyl chain occurs irrespective of the chain length. It was also found that the N(SO(2))(2) moiety is located nearly at the same depth as the imidazolium ring, suggesting that one of oxygen atoms in [TFSI] is bonded to the hydrogen of the C(2) carbon atom of the imidazolium ring.
- 2010-07-28
論文 | ランダム
- LC/MS/MSによる動物組織中のペニシリン系抗生物質の同時定量
- アセトアミノフェンを与えたラットの血液中,肝臓中及び腎臓中非タンパク質性SH基量に及ぼす豚レバーの効果
- 牛および豚の肝臓および腎臓におけるメチオニンスルホキシド還元酵素の性質と活性
- エイコサペンタエン酸,ドコサヘキサエン酸を含む魚油を給与した豚の脂肪における脂肪酸組成の変化と理化学的性状
- 密着複層型位相フレネルレンズ