TY - JOUR
T1 - Phase transition and ionic transport mechanism of (C4H 9)4NI
AU - Asayama, Ryou
AU - Kawamura, Junichi
AU - Hattori, Takeshi
PY - 2005/10/3
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.
UR - http://www.scopus.com/inward/record.url?scp=28944451501&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=28944451501&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2005.08.055
DO - 10.1016/j.cplett.2005.08.055
M3 - Article
AN - SCOPUS:28944451501
SN - 0009-2614
VL - 414
SP - 87
EP - 91
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -