Phase transition and ionic transport mechanism of (C4H 9)4NI

Ryou Asayama; Junichi Kawamura; Takeshi Hattori

doi:10.1016/j.cplett.2005.08.055

Phase transition and ionic transport mechanism of (C₄H ₉)₄NI

Ryou Asayama, Junichi Kawamura, Takeshi Hattori

University Research Administration (URA) Center

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25 Citations (Scopus)

Abstract

Phase transition and ionic transport in tetrabutylammoniumiodide (C ₄H₉)₄NI (TBAI) was investigated using X-ray diffraction, DSC, ionic conductivity and high resolution proton NMR spectroscopy. The TBAI exhibited a solid state phase transition at 391 K of ΔS = 95.2 J/mol K from an ordered phase I to a rotationally disordered plastic phase II. Ionic conductivity in phase I increased gradually near the phase transition point. On the other hand, proton NMR diffusion coefficients showed decrease with raising temperature. The observed fast diffusion of the TBA cation has significant contribution to the observed ionic conductivity of this material.

Original language	English
Pages (from-to)	87-91
Number of pages	5
Journal	Chemical Physics Letters
Volume	414
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2005.08.055
Publication status	Published - 2005 Oct 3

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1016/j.cplett.2005.08.055

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title = "Phase transition and ionic transport mechanism of (C4H 9)4NI",

abstract = "Phase transition and ionic transport in tetrabutylammoniumiodide (C 4H9)4NI (TBAI) was investigated using X-ray diffraction, DSC, ionic conductivity and high resolution proton NMR spectroscopy. The TBAI exhibited a solid state phase transition at 391 K of ΔS = 95.2 J/mol K from an ordered phase I to a rotationally disordered plastic phase II. Ionic conductivity in phase I increased gradually near the phase transition point. On the other hand, proton NMR diffusion coefficients showed decrease with raising temperature. The observed fast diffusion of the TBA cation has significant contribution to the observed ionic conductivity of this material.",

author = "Ryou Asayama and Junichi Kawamura and Takeshi Hattori",

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AU - Asayama, Ryou

AU - Kawamura, Junichi

AU - Hattori, Takeshi

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Y1 - 2005/10/3

N2 - Phase transition and ionic transport in tetrabutylammoniumiodide (C 4H9)4NI (TBAI) was investigated using X-ray diffraction, DSC, ionic conductivity and high resolution proton NMR spectroscopy. The TBAI exhibited a solid state phase transition at 391 K of ΔS = 95.2 J/mol K from an ordered phase I to a rotationally disordered plastic phase II. Ionic conductivity in phase I increased gradually near the phase transition point. On the other hand, proton NMR diffusion coefficients showed decrease with raising temperature. The observed fast diffusion of the TBA cation has significant contribution to the observed ionic conductivity of this material.

AB - Phase transition and ionic transport in tetrabutylammoniumiodide (C 4H9)4NI (TBAI) was investigated using X-ray diffraction, DSC, ionic conductivity and high resolution proton NMR spectroscopy. The TBAI exhibited a solid state phase transition at 391 K of ΔS = 95.2 J/mol K from an ordered phase I to a rotationally disordered plastic phase II. Ionic conductivity in phase I increased gradually near the phase transition point. On the other hand, proton NMR diffusion coefficients showed decrease with raising temperature. The observed fast diffusion of the TBA cation has significant contribution to the observed ionic conductivity of this material.

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Phase transition and ionic transport mechanism of (C₄H ₉)₄NI

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