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1. Observation of molecular ordering at the surface of trimethylpropylammonium bis(trifluoromethanesulfonyl)imide using high-resolution rutherford backscattering Spectroscopy

Author

Motofumil Suzuki, Atsushi Ohno, Kaoru Nakajima, and Kenji Kimura

Subjects
Surface (mathematics), Analytical chemistry, High resolution, Surfaces and Interfaces, Condensed Matter Physics, Ion, Crystallography, chemistry.chemical_compound, chemistry, Electrochemistry, Surface structure, General Materials Science, Spectroscopy, Imide, Conformational isomerism, Layer (electronics)
Abstract

The surface structure of trimethylpropylammonium bis(trifluoromethanesulfonyl)imide ([TMPA] [TFSI]) is studied by high-resolution Rutherford backscattering spectroscopy at room temperature. The results provide direct evidence of the molecular ordering at the surface. The C1 conformer of the [TFSI] anion is dominant among two stable conformers, and the anions are oriented with their CF3 groups pointing toward the vacuum in the outermost molecular layer. The anions in the second molecular layer also show preferred orientation although it is rather weak.

Published
2008

2. Observation of Molecular Ordering at the Surface of Trimethylpropylammonium Bis(trifluoromethanesulfonyl)imide Using High-Resolution Rutherford Backscattering Spectroscopy.

Author

Kaoru Nakajima, Atsushi Ohno, Motofumi Suzuki, and Kenji Kimura

Subjects
*SPECTRUM analysis, *BACKSCATTERING, *SCATTERING (Physics), *ANIONS
Abstract

The surface structure of trimethylpropylammonium bis(trifluoromethanesulfonyl)imide (TMPA TFSI) is studied by high-resolution Rutherford backscattering spectroscopy at room temperature. The results provide direct evidence of the molecular ordering at the surface. The C1conformer of the TFSI anion is dominant among two stable conformers, and the anions are oriented with their CF3groups pointing toward the vacuum in the outermost molecular layer. The anions in the second molecular layer also show preferred orientation although it is rather weak. [ABSTRACT FROM AUTHOR]

Published
2008
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