1009031-23-5Relevant academic research and scientific papers
Noncovalent approach to one-dimensional ion conductors: Enhancement of ionic conductivities in nanostructured columnar liquid crystals
Shimura, Harutoki,Yoshio, Masafumi,Hoshino, Koji,Mukai, Tomohiro,Ohno, Hiroyuki,Kato, Takashi
, p. 1759 - 1765 (2008)
Noncovalent design of new liquid-crystalline (LC) columnar assemblies based on an ionic liquid has shown to be useful to achieve anisotropic high ionic conductivities. An equimolar mixture of an ionic liquid, 1-butyl-3- methylimidazolium bromide, and 3-[3,4,5-tri(octyloxy)benzoyloxy]propane-1,2- diol, which is partially miscible with the ionic liquid, exhibits an LC hexagonal columnar phase from -4 to 63°C. This columnar supramolecular assembly forming the nanostructures shows the one-dimensional (1D) ionic conductivity of 3.9 × 10-3 S cm-1 at 50°C along the column, which is more than 700 times higher than that of the corresponding covalent-type columnar ionic liquid, 1-methyl-3-[3,4,5-tri(octyloxy)benzyl]- imidazolium bromide, which is 5.3 × 10-6 S cm-1 at 50°C. This significant enhancement of the ionic conductivity is attributed to the increase of the mobility of the ionic part.
